##from __future__ import unicode_literals

# Stdlib imports
from enum import Enum
from datetime import datetime, timedelta, date
from dateutil.relativedelta import relativedelta
import os
import sys
from typing import List
from django.core.validators import MaxValueValidator, MinValueValidator

# DJANGO imports
from django.contrib.auth.models import AbstractUser
from django.db import models
from django.db.models import Q, Max
from django.core.validators import MaxValueValidator, MinValueValidator
from django.db.models.deletion import DO_NOTHING
from django.db.models.expressions import F
from model_utils import Choices
from django.utils import timezone
# Project imports
# DeviceCommand is used by class Command
sys.path.append("../../..")
from src.device_controller.abstract_component.device_controller import DeviceCmd

''' 
NOT USED - to be removed
class PyrosState(Enum):
    START = 'Starting'
    PA = 'Passive'
    INI = "INIT"
    STAND = "Standby"
    SCHED_START = 'Scheduler startup'
    SCHED = 'Scheduler'
    SCHED_CLOSE = 'Scheduler closing'
'''



"""
STYLE RULES
===========
https://simpleisbetterthancomplex.com/tips/2018/02/10/django-tip-22-designing-better-models.html
https://steelkiwi.com/blog/best-practices-working-django-models-python/

- Model name => singular
    Call it Company instead of Companies. 
    A model definition is the representation of a single object (the object in this example is a company), 
    and not a collection of companies
    The model definition is a class, so always use CapWords convention (no underscores)
    E.g. User, Permission, ContentType, etc.

- For the model’s attributes use snake_case.
    E.g. first_name, last_name, etc

- Blank and Null Fields (https://simpleisbetterthancomplex.com/tips/2016/07/25/django-tip-8-blank-or-null.html)
    - Null: It is database-related. Defines if a given database column will accept null values or not.
    - Blank: It is validation-related. It will be used during forms validation, when calling form.is_valid().
    Do not use null=True for text-based fields that are optional.
    Otherwise, you will end up having two possible values for “no data”, that is: None and an empty string.
    Having two possible values for “no data” is redundant.
    The Django convention is to use the empty string, not NULL.
    Example:
        # The default values of `null` and `blank` are `False`.
        class Person(models.Model):
            name = models.CharField(max_length=255)  # Mandatory
            bio = models.TextField(max_length=500, blank=True)  # Optional (don't put null=True)
            birth_date = models.DateField(null=True, blank=True) # Optional (here you may add null=True)
    The default values of null and blank are False.
    Special case, when you need to accept NULL values for a BooleanField, use NullBooleanField instead.

- Choices : you can use Choices from the model_utils library. Take model Article, for instance:
    from model_utils import Choices
    class Article(models.Model):
        STATUSES = Choices(
            (0, 'draft', _('draft')),
            (1, 'published', _('published'))   )
        status = models.IntegerField(choices=STATUSES, default=STATUSES.draft)

- Reverse Relationships

    - related_name :
    Rule of thumb: if you are not sure what would be the related_name, 
    use the plural of the model holding the ForeignKey.
    ex:
        class Company:
            name = models.CharField(max_length=30)
        class Employee:
            first_name = models.CharField(max_length=30)
            last_name = models.CharField(max_length=30)
            company = models.ForeignKey(Company, on_delete=models.CASCADE, related_name='employees')
    usage:
        google = Company.objects.get(name='Google')
        google.employees.all()
        You can also use the reverse relationship to modify the company field on the Employee instances:
        vitor = Employee.objects.get(first_name='Vitor')
        google = Company.objects.get(name='Google')
        google.employees.add(vitor)

    - related_query_name :
        This kind of relationship also applies to query filters. 
        For example, if I wanted to list all companies that employs people named ‘Vitor’, I could do the following:
        companies = Company.objects.filter(employee__first_name='Vitor')
        If you want to customize the name of this relationship, here is how we do it:
            class Employee:
                first_name = models.CharField(max_length=30)
                last_name = models.CharField(max_length=30)
                company = models.ForeignKey(
                    Company,
                    on_delete=models.CASCADE,
                    related_name='employees',
                    related_query_name='person'
                )
        Then the usage would be:
        companies = Company.objects.filter(person__first_name='Vitor')

    To use it consistently, related_name goes as plural and related_query_name goes as singular.


GENERAL EXAMPLE
=======

from django.db import models
from django.urls import reverse

class Company(models.Model):
    # CHOICES
    PUBLIC_LIMITED_COMPANY = 'PLC'
    PRIVATE_COMPANY_LIMITED = 'LTD'
    LIMITED_LIABILITY_PARTNERSHIP = 'LLP'
    COMPANY_TYPE_CHOICES = (
        (PUBLIC_LIMITED_COMPANY, 'Public limited company'),
        (PRIVATE_COMPANY_LIMITED, 'Private company limited by shares'),
        (LIMITED_LIABILITY_PARTNERSHIP, 'Limited liability partnership'),
    )

    # DATABASE FIELDS
    name = models.CharField('name', max_length=30)
    vat_identification_number = models.CharField('VAT', max_length=20)
    company_type = models.CharField('type', max_length=3, choices=COMPANY_TYPE_CHOICES)

    # MANAGERS
    objects = models.Manager()
    limited_companies = LimitedCompanyManager()

    # META CLASS
    class Meta:
        verbose_name = 'company'
        verbose_name_plural = 'companies'

    # TO STRING METHOD
    def __str__(self):
        return self.name

    # SAVE METHOD
    def save(self, *args, **kwargs):
        do_something()
        super().save(*args, **kwargs)  # Call the "real" save() method.
        do_something_else()

    # ABSOLUTE URL METHOD
    def get_absolute_url(self):
        return reverse('company_details', kwargs={'pk': self.id})

    # OTHER METHODS
    def process_invoices(self):
        do_something()

"""


def printd(*args, **kwargs):
    if os.environ.get('PYROS_DEBUG', '0')=='1': print('(MODEL)', *args, **kwargs)

# ---
# --- Utility functions
# ---
def get_or_create_unique_row_from_model(model:models.Model):
    #return model.objects.get(id=1) if model.objects.exists() else model.objects.create(id=1)
    return model.objects.first() if model.objects.exists() else model.objects.create(id=1)


"""
------------------------
   BASE MODEL CLASSES
------------------------
"""

class Device(models.Model):
    name = models.CharField(max_length=45, blank=True, null=True)
    desc = models.TextField(blank=True, null=True)
    created = models.DateTimeField(blank=True, null=True, auto_now_add=True)
    updated = models.DateTimeField(blank=True, null=True, auto_now=True)
    is_online = models.BooleanField(default=False)
    status = models.CharField(max_length=11, blank=True, null=True)
    maintenance_date = models.DateTimeField(blank=True, null=True)

    class Meta:
        abstract = True

    def __str__(self):
        return (str(self.name))

class Request(models.Model):
    pyros_user = models.ForeignKey(
        'PyrosUser', on_delete=models.DO_NOTHING, related_name="requests")
    scientific_program = models.ForeignKey(
        'ScientificProgram', on_delete=models.DO_NOTHING, related_name="requests", blank=True, null=True)
    name = models.CharField(max_length=45, blank=True, null=True)
    desc = models.TextField(blank=True, null=True)
    created = models.DateTimeField(blank=True, null=True, auto_now_add=True)
    updated = models.DateTimeField(blank=True, null=True, auto_now=True)
    is_alert = models.BooleanField(default=False)
    target_type = models.CharField(max_length=8, blank=True, null=True)
    status = models.CharField(max_length=10, blank=True, null=True)
    autodeposit = models.BooleanField(default=False)
    checkpoint = models.CharField(max_length=45, blank=True, null=True)
    flag = models.CharField(max_length=45, blank=True, null=True)
    complete = models.BooleanField(default=False)
    submitted = models.BooleanField(default=False)

    class Meta:
        managed = True
        db_table = 'request'

    def __str__(self):
        return (str(self.name))



"""
------------------------
   OTHER MODEL CLASSES
------------------------
"""

#TODO: A VIRER car remplacé par AgentDeviceStatus
class AgentDeviceTelescopeStatus(models.Model):
    #created = models.DateTimeField('status date', blank=True, null=True, auto_now_add=True)
    updated = models.DateTimeField('status date', blank=True, null=True, auto_now=True)
    radec = models.CharField('agent mode', max_length=30, blank=True)

    class Meta:
        managed = True
        db_table = 'agent_device_telescope_status'
        #verbose_name = "agent survey"
        #verbose_name_plural = "agents survey"

    """
    def __str__(self):
        return (f"Agent {self.name} at {self.updated} in mode {self.mode} and status {self.status}")
    """


class AgentDeviceStatus(models.Model):
    """Table storing various status parameters for EACH Device.

    Attributes:
        attr1 (str): Description of `attr1`.
        attr2 (:obj:`int`, optional): Description of `attr2`.

    """
    #created = models.DateTimeField('status date', blank=True, null=True, auto_now_add=True)
    agent = models.CharField('Name of the agent that saved this parameter', max_length=45, blank=True, null=True)
    #radec = models.CharField('agent mode', max_length=30, blank=True)
    status = models.CharField('status parameters json dictionnary (ex: {radec:..., speed:...})', max_length=300, blank=True, null=True)
    date_updated = models.DateTimeField('status parameter date', blank=True, null=True, auto_now=True)

    class Meta:
        managed = True
        db_table = 'agent_device_status'
        verbose_name = "agent device status"
        verbose_name_plural = "agent devices status"

    def __str__(self):
        return (f"Agent {self.agent} last status is ({self.status}) (saved at {self.date_updated})")

    @classmethod
    def getStatusForAgent(cls, agent:str) -> str:
        return cls.objects.filter(agent=agent)[0] if cls.objects.filter(agent=agent).exists() else cls.objects.create(agent=agent)
        '''
        return cls.objects.filter(agent=agent)[0].status if cls.objects.filter(agent=agent).exists() else cls.objects.create(agent=agent).status
        agent_status = cls.objects.filter(agent=agent)
        if agent_status.exists(): 
            return agent_status[0].status
        else:
            return cls.objects.create(agent=agent)
        '''


class AgentLogs(models.Model):
    created = models.DateTimeField(blank=True, null=True, auto_now_add=True)
    name = models.CharField(max_length=50)
    message = models.TextField(blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'agent_logs'

    def __str__(self):
        return (f"{self.created} {self.name} {self.message}")


class AgentSurvey(models.Model):
    """
    | id | name | created | updated | validity_duration (default=1mn) | mode (active/idle) | status (launch/init/loop/exit/...) |
    """

    # Statuses
    #STATUSES = Choices('new', 'verified', 'published')
    STATUS_LAUNCH = "LAUNCHED"
    STATUS_INIT = "INITIALIZING"
    STATUS_MAIN_LOOP = "IN_MAIN_LOOP"
    STATUS_PROCESS_LOOP = "IN_PROCESS_LOOP"
    STATUS_EXIT = "EXITING"

    # Modes
    MODE_ACTIVE = "ACTIVE"
    MODE_IDLE = "IDLE"

    MODE_CHOICES = (
        (MODE_ACTIVE, 'Active mode'),
        (MODE_IDLE, 'Idle mode'),
    )

    STATUS_CHOICES = (
        (STATUS_LAUNCH, "LAUNCHED"),
        (STATUS_INIT, "INITIALIZING"),
        (STATUS_MAIN_LOOP, "IN_MAIN_LOOP"),
        (STATUS_PROCESS_LOOP, "IN_PROCESS_LOOP"),
        (STATUS_EXIT, "EXITING"),
    )

    name = models.CharField(max_length=50, unique=True)
    #name = models.CharField(max_length=50, blank=True, null=True, unique=True)
    #created = models.DateTimeField(blank=True, null=True, auto_now_add=True)
    created = models.DateTimeField(blank=True, null=True, auto_now_add=True)
    updated = models.DateTimeField(blank=True, null=True, auto_now=True)
    validity_duration = models.PositiveIntegerField(default=90)
    #validity_duration = models.DurationField(default=90)
    mode = models.CharField('agent mode', max_length=15, blank=True, choices=MODE_CHOICES)
    status = models.CharField(max_length=15, blank=True, choices=STATUS_CHOICES)
    iteration = models.IntegerField(blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'agent_survey'
        #verbose_name = "agent survey"
        #verbose_name_plural = "agents survey"

    def __str__(self):
        return (f"Agent {self.name} at {self.updated} in mode {self.mode} and status {self.status}")


class Album(models.Model):
    sequence = models.ForeignKey(
        'Sequence', on_delete=models.CASCADE, related_name="albums")
    detector = models.ForeignKey(
        'Detector', models.DO_NOTHING, related_name="albums", blank=True, null=True)
    name = models.CharField(max_length=45, blank=True, null=True)
    desc = models.TextField(blank=True, null=True)
    created = models.DateTimeField(blank=True, null=True, auto_now_add=True)
    updated = models.DateTimeField(blank=True, null=True, auto_now=True)
    complete = models.BooleanField(default=False)

    class Meta:
        managed = True
        db_table = 'album'
        #verbose_name_plural = "Albums"

    def __str__(self):
        return (str(self.name))


class Alert(Request):
    request = models.OneToOneField('Request', on_delete=models.CASCADE, default='', parent_link=True)
    strategyobs = models.ForeignKey(
        'StrategyObs', models.DO_NOTHING, related_name="alerts", blank=True, null=True)
    voevent_file = models.CharField(max_length=45, blank=True, null=True)
    author = models.CharField(max_length=45, blank=True, null=True)
    burst_jd = models.DecimalField(max_digits=15, decimal_places=8, blank=True, null=True)
    burst_ra = models.FloatField(max_length=45, blank=True, null=True)
    burst_dec = models.FloatField(max_length=45, blank=True, null=True)
    astro_coord_system = models.CharField(max_length=45, blank=True, null=True)
    jd_send = models.DecimalField(max_digits=15, decimal_places=8, blank=True, null=True)
    jd_received = models.DecimalField(max_digits=15, decimal_places=8, blank=True, null=True)
    trig_id = models.IntegerField(blank=True, null=True)
    error_radius = models.FloatField(max_length=45, blank=True, null=True)
    defly_not_grb = models.BooleanField(default=False)
    editor = models.CharField(max_length=45, blank=True, null=True)
    soln_status = models.CharField(max_length=45, blank=True, null=True)
    pkt_ser_num = models.IntegerField(blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'alert'

    def __str__(self):
        return str(self.trig_id)

    def request_name(self):
        return self.__str__()

    request_name.short_description = "Name"



class AgentCmd(models.Model):

    """
    | id | sender | recipient | name | validity_duration (default=60) | s_deposit_time | r_read_time

    See models_Command_state_diag.pu for PlantUML state diagram
    """

    # -------------- Command CONSTANTS --------------

    # Receiver status codes
    """
    RSCODE_RUNNING = -1 # en cours d’exécution => une fois la cde lue
    RSCODE_EXECUTED = 0 # cde exécutée => simulé par un sleep(3) dans AgentX.core_process())
    RSCODE_PENDING = 1 # cde en attente d'exécution
    RSCODE_SKIPPED = 2 # cde ignorée (je suis idle… et j’ai ignoré cette commande, et je passe à la cde suivante) 
    RSCODE_OUTOFDATE = 3 # cde périmée 
    CMD_STATUS_CODES = (
        RSCODE_RUNNING, # en cours d’exécution => une fois la cde lue
        RSCODE_EXECUTED, # cde exécutée => simulé par un sleep(3) dans AgentX.core_process())
        RSCODE_PENDING, # cde en attente d'exécution
        RSCODE_SKIPPED, # cde ignorée (je suis idle… et j’ai ignoré cette commande, et je passe à la cde suivante) 
        RSCODE_OUTOFDATE, # cde périmée 
    )
    """
    CMD_STATUS_CODES = Choices(
        "CMD_RUNNING", # en cours d’exécution => une fois la cde lue
        "CMD_EXECUTED", # cde exécutée => simulé par un sleep(3) dans AgentX.core_process())
        "CMD_PENDING", # cde en attente d'exécution
        "CMD_SKIPPED", # cde ignorée (je suis idle… et j’ai ignoré cette commande, et je passe à la cde suivante) 
        "CMD_KILLED", # cde ignorée (je suis idle… et j’ai ignoré cette commande, et je passe à la cde suivante) 
        "CMD_OUTOFDATE" # cde périmée 
    )
    _AGENT_GENERAL_COMMANDS = [
        #"do_eval", "set_state:idle", "set_state:active",
        "do_eval", 
        "set_state",
        # Commands executed in priority (even if other pending commands exist)
        "do_flush_commands", "do_abort", "do_exit", "do_restart_init"
    ]
    #COMMANDS_PEREMPTION_HOURS = 48
    COMMANDS_PEREMPTION_HOURS = 60/60
    COMMANDS_VALIDITY_DURATION_SEC_DEFAULT = 60


    # -------------- Command FIELDS --------------

    #sender = models.CharField(max_length=50, blank=True, null=True, unique=True)
    # Sender and Recipient agents
    sender = models.CharField(max_length=50, help_text='sender agent name', null=False)
    recipient = models.CharField(max_length=50, help_text='recipient agent name', null=False)
    ##name = models.CharField(max_length=400, help_text='command name', null=False)
    full_name = models.CharField(max_length=400, help_text='command full name (with type and args)', null=False)
    validity_duration = models.PositiveIntegerField('(in sec)', default=COMMANDS_VALIDITY_DURATION_SEC_DEFAULT)
    #state = models.CharField(choices = CMD_STATUS_CODES, default=CMD_STATUS_CODES.CMD_PENDING, max_length=20)
    state = models.CharField(choices = CMD_STATUS_CODES, default=CMD_STATUS_CODES.CMD_PENDING, max_length=20)
    #state = models.IntegerField(choices=CMD_STATUS_CODES, default=RSCODE_PENDING)
    # TODO: maybe à mettre au format json (key:value)
    result = models.CharField(max_length=400, blank=True)

    # on creation: (AUTO) Automatically set at table line creation (line created by the sender)
    s_deposit_time = models.DateTimeField(blank=True, null=True, auto_now_add=True)
    # - on reading:
    r_read_time = models.DateTimeField(null=True)
    # - on launching:
    r_start_time = models.DateTimeField(null=True)
    # - on skipping (because idle), expiration (because too old), kill, or end of execution
    end_time = models.DateTimeField(null=True)

    # Other agent (than sender or recipient) that set this command to KILLED or EXPIRED 
    killer_agent_name = models.CharField(max_length=50, help_text='sender agent name', null=True)

    # Intern field, not saved in DB
    _device_command = None

    class Meta:
        managed = True
        db_table = 'command'
        #verbose_name = "agent survey"
        #verbose_name_plural = "agents survey"


    # -------------- Command CLASS (static) METHODS --------------

    # Avoid to override the Model __init__ method
    @classmethod
    def create(cls, from_agent, to_agent, cmd_name, cmd_args=None):
        if '.' in to_agent:
            to_agent, component_name = to_agent.split('.')
            cmd_name = component_name+'.'+cmd_name
        if cmd_args: cmd_name += ' '+cmd_args
        #cls._device_command=DeviceCommand(cmd_name)
        return cls(
            sender=from_agent,
            recipient=to_agent,
            full_name=cmd_name,
        )

    """
    @classmethod
    def send(cls, cmd:Command):
        cls.objects.create(sender=cmd.name, recipient=cmd.recipient, name=cmd.name)
    """

    @classmethod
    def send_cmd(cls, from_agent, to_agent, cmd_name, cmd_args=None):
    ##def send(cls, from_agent, to_agent, cmd_name, cmd_args=None):
        """
        ex: send("AgentA",“AgentB”,"EVAL”,“3+4”)
        """
        '''
        if cmd_args: cmd_name += ' '+cmd_args
        #Command.objects.create(sender=self.name, recipient=r_agent, name=cmd_name)
        cmd = cls(sender=from_agent, recipient=to_agent, name=cmd_name)
        '''
        cmd = cls.create(from_agent, to_agent, cmd_name, cmd_args)
        cmd.send()
        #cmd.set_as_pending()
        #cmd.save()
        return cmd


    @classmethod
    def get_peremption_date_from_now(cls):
        return datetime.utcnow().astimezone() - timedelta(hours = cls.COMMANDS_PEREMPTION_HOURS)

    @classmethod
    def delete_commands_with_running_status_for_agent(cls, agent_name):
        printd("Delete (false) 'running' commands if exists:")
        running_commands = cls.objects.filter(
            # only commands for agent agent_name
            recipient = agent_name,
            # only running commands
            state = cls.CMD_STATUS_CODES.CMD_RUNNING,
            # only not expired commands
            #s_deposit_time__gte = cls.get_peremption_date_from_now(),
        )
        if running_commands:
            AgentCmd.show_commands(running_commands)
            running_commands.delete()
        else: printd("<None>")

    @classmethod
    def delete_pending_commands_for_agent(cls, agent_name):
        """
        Delete all pending commands sent to agent_name,
        except very recent commands.
        This (exception) is to avoid a "data race" where for example agentB is executing a "flush" command 
        while agentA is sending command to agentB... :
        - agentB will then delete the command just sent by agentA
        - agentA will check regularly the status of its sent command, and this will crash as this command exists no more !!
        """
        printd("Delete all pending command(s) if exists (except very recent ones):")
        now_minus_2sec = datetime.utcnow().astimezone() - timedelta(seconds = 2)
        #print("now_minus_2sec", now_minus_2sec)
        pending_commands = cls.objects.filter(
            # only commands for agent agent_name
            recipient = agent_name,
            # only running commands
            state = cls.CMD_STATUS_CODES.CMD_PENDING,
            # except very recent commands : take only commands that are more than 2 sec old
            s_deposit_time__lt = now_minus_2sec
        )
        if pending_commands:
            AgentCmd.show_commands(pending_commands)
            pending_commands.delete()
        else: printd("<None>")

    @classmethod
    def get_pending_and_running_commands_for_agent(cls, agent_name):
        #print("peremption date", COMMAND_PEREMPTION_DATE_FROM_NOW)
        return cls.objects.filter(
            # only pending commands
            # but also including the currently running command
            Q(state = cls.CMD_STATUS_CODES.CMD_PENDING) | Q(state = cls.CMD_STATUS_CODES.CMD_RUNNING),
            # only commands for agent agent_name
            recipient = agent_name,
            #recipient__startswith=agent_name,
            #Q(recipient.split('.')[0] = agent_name),
            # only not expired commands
            #s_deposit_time__gte = cls.get_peremption_date_from_now(),
        ).order_by("s_deposit_time")

    @classmethod
    def get_commands_sent_to_agent(cls, agent_name):
        return cls.objects.filter(recipient=agent_name)

    @classmethod
    def get_commands_sent_by_agent(cls, agent_name):
        return cls.objects.filter(sender=agent_name)

    @classmethod
    def get_last_N_commands_sent_to_agent(cls, agent_name, N):
        #filter(since=since)
        #return cls.objects.all()[:nb_cmds]
        #commands = cls.objects.filter(recipient = agent_name).order_by('-id')[:N]
        commands = cls.get_commands_sent_to_agent(agent_name).order_by('-id')[:N]
        return list(reversed(commands))

    @classmethod
    def get_last_N_commands_sent_by_agent(cls, agent_name, N):
        #filter(since=since)
        #return cls.objects.all()[:nb_cmds]
        #commands = cls.objects.filter(recipient = agent_name).order_by('-id')[:N]
        commands = cls.get_commands_sent_by_agent(agent_name).order_by('-id')[:N]
        return list(reversed(commands))

    @classmethod
    def purge_old_commands_sent_to_agent(cls, agent_name):
        """
        Delete commands (which agent_name is recipient of) older than COMMANDS_PEREMPTION_HOURS (like 48h)
        ATTENTION !!! EXCEPT the RUNNING command !!!
        NB: datetime.utcnow() is equivalent to datetime.now(timezone.utc)
        """

        printd(f"(Looking for commands sent to me that are not executing and older than {cls.COMMANDS_PEREMPTION_HOURS} hour(s))")
        #COMMAND_PEREMPTION_DATE_FROM_NOW = datetime.utcnow() - timedelta(hours = cls.COMMANDS_PEREMPTION_HOURS)
        #print("peremption date", COMMAND_PEREMPTION_DATE_FROM_NOW)
        old_commands = cls.objects.filter(
            # only commands for agent agent_name
            recipient = agent_name,
            # only expired commands
            s_deposit_time__lt = cls.get_peremption_date_from_now(),
        ).exclude(
            state = cls.CMD_STATUS_CODES.CMD_RUNNING
        )
        if old_commands.exists():
            printd("Found old commands to delete:")
            #for cmd in old_commands: print(cmd)
            cls.show_commands(old_commands)
            old_commands.delete()
        else:
            printd("<None>")

    @classmethod
    #def show_commands(cls, commands:models.query):
    def show_commands(cls, commands:list, do_it:bool=False):
    #def show_commands(cls, commands:List[Commmand]):
        #if not commands.exists(): print("<No command>")
        commands = list(commands)
        if len(commands) == 0: 
            if do_it: print("<None>")
            else: printd("<None>")
        for cmd in commands: 
            if do_it: print("-", cmd.name, cmd)
            else: printd("-", cmd.name, cmd)


    # -------------- AgentCmd INSTANCE METHODS --------------

    def __str__(self):
        #return (f"Commmand '{self.name}' ({self.state}) sent by agent {self.sender} to agent {self.recipient} at {self.s_deposit_time}")
        cmd_sent_time = f" at {self.s_deposit_time}" if self.s_deposit_time else ''
        return (f"Commmand '{self.full_name}' ({self.state}) sent to agent {self.recipient}{cmd_sent_time} [by agent {self.sender}]")

    @property
    def device_command(self):
        if not self._device_command:
            self._device_command = DeviceCmd(self.full_name)
            #dc = self._device_command
            #print("...DEVICE CMD:", dc.full_name, dc.name, dc.devtype, dc.args)
        return self._device_command

    @property
    def name_and_args(self):
        return self.device_command.name_and_args
        '''
        cmd_name_and_args = self.full_name
        if '.' in cmd_name_and_args:
            cmd_name_and_args = cmd_name_and_args.split('.')[1]
        return cmd_name_and_args
        '''

    def get_full_name_parts(self):
        return self.device_command.get_full_name_parts()
        '''
        cmd_name = self.full_name
        cmd_type = None
        cmd_args = None
        if '.' in cmd_name:
            cmd_type, cmd_name = cmd_name.split('.')
        if ' ' in cmd_name:
            cmd_name, *cmd_args = cmd_name.split(' ')
        return cmd_type, cmd_name, cmd_args
        '''

    @property
    def name(self):
        '''
        _,cmd_name,_ = self.get_full_name_parts()
        return cmd_name
        '''
        return self.device_command.name

    @property
    def args(self):
        '''
        _,_,cmd_args = self.get_full_name_parts()
        return cmd_args
        '''
        return self.device_command.args

    @property
    def device_type(self): return self.device_command.devtype

    def send(self):
        #self.save()
        self.set_as_pending()

    '''
    def tokenize(self):
        cmd_name, *cmd_args = self.full_name.split(' ')
        return cmd_name, cmd_args
    '''

    # --- BOOLEAN (test) functions ---

    def is_agent_general_cmd(self):
        """
        Is this a general command ?
        It is the case if command is of style "do_set:state:idle" or "do_restart" or "do_flush"...
        """
        ##name = self.name
        ##if " " in name: name,args = name.split()
        ##name = self.name.split(' ')[0]
        ##cmd_name, _ = self.tokenize()
        #return cmd_name in self.GENERIC_COMMANDS
        #print("**********************CMD NAME is", self.name, "in ???", self._AGENT_GENERAL_COMMANDS)
        return self.name in self._AGENT_GENERAL_COMMANDS
        #"CMD_OUTOFDATE" # cde périmée 

    def is_read(self):
        return self.r_read_time is not None

    def is_pending(self):
        return self.state == self.CMD_STATUS_CODES.CMD_PENDING

    def is_running(self):
        #return (datetime.utcnow() - self.s_deposit_time) > timedelta(seconds = self.validity_duration)
        return self.state == self.CMD_STATUS_CODES.CMD_RUNNING

    def is_executed(self):
        return self.state == self.CMD_STATUS_CODES.CMD_EXECUTED

    def is_skipped(self):
        return self.state == self.CMD_STATUS_CODES.CMD_SKIPPED

    def is_killed(self):
        return self.state == self.CMD_STATUS_CODES.CMD_KILLED

    def is_expired(self):
        #return (datetime.utcnow() - self.s_deposit_time) > timedelta(seconds = self.validity_duration)
        elapsed_time = (datetime.utcnow().astimezone() - self.s_deposit_time)
        printd("elapsed_time", elapsed_time)
        return elapsed_time > timedelta(seconds = self.validity_duration)
        """
        elapsed_time = cmd.r_read_time - cmd.s_deposit_time
        max_time = timedelta(seconds = cmd.validity_duration)
        print(f"Elapsed time is {elapsed_time}, (max is {max_time})")
        if elapsed_time > max_time:
        """

    # --- GETTERS/SETTERS functions ---

    def get_result(self):
        return self.result

    def get_updated_result(self):
        self.refresh_from_db()
        return self.result

    def set_result(self, result:str):
        self.result = result
        self.save()

    def set_read_time(self):
        self.r_read_time = datetime.utcnow().astimezone()
        # Optimization: update only 1 field
        self.save(update_fields=["r_read_time"])

    def set_as_processed(self):
        printd(f"- Set command {self.name} as processed")
        self.set_state_to(self.CMD_STATUS_CODES.CMD_EXECUTED)
        #print(self)
        """
        self.state = self.CMD_STATUS_CODES.CMD_EXECUTED
        self.r_processed_time = datetime.utcnow().astimezone()
        self.save()
        """
        # Optimization: update the related fields, but does not work, why ?
        ##self.save(update_fields=["state", "r_processed_time"])

    def set_as_outofdate(self):
        print(f"- Set this command as expired (older than its validity duration of {self.validity_duration}s): {self}")
        self.set_state_to(self.CMD_STATUS_CODES.CMD_OUTOFDATE)

    def set_as_pending(self):
        self.set_state_to(self.CMD_STATUS_CODES.CMD_PENDING)

    def set_as_skipped(self):
        self.set_state_to(self.CMD_STATUS_CODES.CMD_SKIPPED)

    def set_as_killed_by(self, author_agent:str):
        printd(f"- Set command {self.name} as killed")
        #print(f"- Set this command as killed: {self}")
        self.set_state_to(self.CMD_STATUS_CODES.CMD_KILLED, author_agent)

    def set_as_running(self):
        printd(f"- Set command {self.name} as running")
        self.set_state_to(self.CMD_STATUS_CODES.CMD_RUNNING)
    '''
    def set_as_executed(self):
        self.set_state_to(self.CMD_STATUS_CODES.CMD_EXECUTED)
    '''

    def set_state_to(self, status:str, author_agent_name:str=None):
        now_time = datetime.utcnow().astimezone()
        if status in (self.CMD_STATUS_CODES.CMD_RUNNING, self.CMD_STATUS_CODES.CMD_SKIPPED, self.CMD_STATUS_CODES.CMD_OUTOFDATE):
            assert self.is_pending()
            if status == self.CMD_STATUS_CODES.CMD_RUNNING:
                self.r_start_time = now_time
            elif status in (self.CMD_STATUS_CODES.CMD_SKIPPED):
                self.end_time = now_time
            # EXPIRED
            elif status == self.CMD_STATUS_CODES.CMD_OUTOFDATE:
                self.end_time = now_time
                self.killer_agent_name = author_agent_name
        elif status in (self.CMD_STATUS_CODES.CMD_EXECUTED, self.CMD_STATUS_CODES.CMD_KILLED):
            assert self.is_running()
            self.end_time = now_time
            if status == self.CMD_STATUS_CODES.CMD_KILLED:
                self.killer_agent_name = author_agent_name
        # Update command status
        self.state = status
        self.save()
        # Optimization, but does not work, why ?...
        ##self.save(update_fields=["state"])



class Config(models.Model):
    PYROS_STATE = ["Starting", "Passive", "Standby", "Remote", "Startup", "Scheduler", "Closing" ]

    id = models.IntegerField(default='1', primary_key=True)
    #latitude = models.FloatField(default=1)
    latitude = models.DecimalField(
        max_digits=4, decimal_places=2, 
        default=1,
        validators=[
            MaxValueValidator(90),
            MinValueValidator(-90)
        ]
    )
    local_time_zone = models.FloatField(default=1)
    #longitude = models.FloatField(default=1)
    longitude = models.DecimalField(
        max_digits=5, decimal_places=2, 
        default=1,
        validators=[
            MaxValueValidator(360),
            MinValueValidator(-360)
        ]
    )
    altitude = models.FloatField(default=1)
    horizon_line = models.FloatField(default=1)
    row_data_save_frequency = models.IntegerField(default='300')
    request_frequency = models.IntegerField(default='300')
    analysed_data_save = models.IntegerField(default='300')
    telescope_ip_address = models.CharField(max_length=45, default="127.0.0.1")
    camera_ip_address = models.CharField(max_length=45, default="127.0.0.1")
    plc_ip_address = models.CharField(max_length=45, default="127.0.0.1")

    # TODO: changer ça, c'est pas clair du tout...
    # True = mode Scheduler-standby, False = mode Remote !!!!
    global_mode = models.BooleanField(default='True')

    ack = models.BooleanField(default='False')
    bypass = models.BooleanField(default='True')
    lock = models.BooleanField(default='False')
    pyros_state = models.CharField(max_length=25, default=PYROS_STATE[0])
    force_passive_mode = models.BooleanField(default='False')
    plc_timeout_seconds = models.PositiveIntegerField(default=60)
    majordome_state = models.CharField(max_length=25, default="")
    ntc = models.BooleanField(default='False')
    majordome_restarted = models.BooleanField(default='False')

    class Meta:
        managed = True
        db_table = 'config'
        verbose_name_plural = "Config"

    def __str__(self):
        return (str(self.__dict__))



class Country(models.Model):
    name = models.CharField(max_length=45, blank=True, null=True)
    desc = models.TextField(blank=True, null=True)
    quota = models.FloatField(blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'country'
        verbose_name_plural = "Countries"

    def __str__(self):
        return (str(self.name))


class Detector(Device):
    VIS = "Visible camera"
    NIR = "Cagire"

    telescope = models.ForeignKey(
        'Telescope', models.DO_NOTHING, related_name="detectors")
    nb_photo_x = models.IntegerField(blank=True, null=True)
    nb_photo_y = models.IntegerField(blank=True, null=True)
    photo_size_x = models.IntegerField(blank=True, null=True)
    photo_size_y = models.IntegerField(blank=True, null=True)
    has_shutter = models.BooleanField(default=False)
    equivalent_foc_len = models.CharField(max_length=45, blank=True, null=True)
    acq_start = models.DateTimeField(blank=True, null=True)
    acq_stop = models.DateTimeField(blank=True, null=True)
    check_temp = models.FloatField(blank=True, null=True)
    gain = models.FloatField(blank=True, null=True)
    readout_noise = models.FloatField(blank=True, null=True)
    readout_time = models.FloatField(blank=True, null=True)
    idcam_readout_mode = models.IntegerField(blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'detector'

    def __str__(self):
        return str(self.name)

    def device_name(self):
        return self.__str__()
    device_name.short_description = "Name"


class Dome(Device):
    DOME = "Dome"

    open = models.BooleanField(default=False, blank=True)

    class Meta:
        managed = True
        db_table = 'dome'

    def __str__(self):
        return str(self.name)

    def device_name(self):
        return self.__str__()
    device_name.short_description = "Name"



class Filter(Device):
    VIS_FILTER_1 = "First visible filter"
    VIS_FILTER_2 = "Second visible filter"
    NIR_FILTER_1 = "First infrared filter"
    NIR_FILTER_2 = "Second infrared filter"

    filter_wheel = models.ForeignKey(
        "FilterWheel", models.DO_NOTHING, related_name="filters", blank=True, null=True)
    category = models.CharField(max_length=1, blank=True, null=True)
    transmission_curve_doc = models.CharField(
        max_length=45, blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'filter'

    def __str__(self):
        return (str(self.name))

    def device_name(self):
        return self.__str__()
    device_name.short_description = "Name"


class FilterWheel(Device):
    detector = models.OneToOneField(Detector, on_delete=models.CASCADE,
                                    related_name="filter_wheel", blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'filter_wheel'

    def __str__(self):
        return (str(self.name))

    def device_name(self):
        return self.__str__()
    device_name.short_description = "Name"


class Image(models.Model):
    plan = models.ForeignKey('Plan', on_delete=models.CASCADE, related_name="images")
    nrtanalysis = models.ForeignKey(
        'NrtAnalysis', models.DO_NOTHING, blank=True, null=True, related_name="images")
    name = models.CharField(max_length=45, blank=True, null=True)
    desc = models.TextField(blank=True, null=True)
    created = models.DateTimeField(blank=True, null=True, auto_now_add=True)
    updated = models.DateTimeField(blank=True, null=True, auto_now=True)
    date_from_gps = models.CharField(max_length=45, blank=True, null=True)
    level = models.IntegerField(blank=True, null=True)
    type = models.CharField(max_length=5, blank=True, null=True)
    quality = models.CharField(max_length=45, blank=True, null=True)
    flaggps = models.CharField(max_length=45, blank=True, null=True)
    exposure = models.CharField(max_length=45, blank=True, null=True)
    tempext = models.CharField(max_length=45, blank=True, null=True)
    pressure = models.CharField(max_length=45, blank=True, null=True)
    humidext = models.CharField(max_length=45, blank=True, null=True)
    wind = models.CharField(max_length=45, blank=True, null=True)
    wind_dir = models.CharField(max_length=45, blank=True, null=True)
    dwnimg = models.CharField(max_length=45, blank=True, null=True)
    dwncata = models.CharField(max_length=45, blank=True, null=True)
    dwn = models.CharField(max_length=45, blank=True, null=True)
    level0_fits_name = models.CharField(max_length=45, blank=True, null=True)
    level1a_fits_name = models.CharField(max_length=45, blank=True, null=True)
    level1b_fits_name = models.CharField(max_length=45, blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'image'

    def __str__(self):
        return (str(self.name))


class Log(models.Model):
    agent = models.CharField(max_length=45, blank=True, null=True)
    created = models.DateTimeField(blank=True, null=True, auto_now_add=True)
    message = models.TextField(blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'log'

    def __str__(self):
        return (str(self.agent))


class NrtAnalysis(models.Model):
    name = models.CharField(max_length=45, blank=True, null=True)
    desc = models.TextField(blank=True, null=True)
    created = models.DateTimeField(blank=True, null=True, auto_now_add=True)
    updated = models.DateTimeField(blank=True, null=True, auto_now=True)
    analysis = models.TextField(blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'nrtanalysis'
        verbose_name_plural = "Nrt analyzes"

    def __str__(self):
        return (str(self.name))


class Plan(models.Model):
    album = models.ForeignKey(Album, on_delete=models.CASCADE, related_name="plans")
    filter = models.ForeignKey(Filter, models.DO_NOTHING, related_name="plans", blank=True, null=True)
    name = models.CharField(max_length=45, blank=True, null=True)
    desc = models.CharField(max_length=45, blank=True, null=True)
    created = models.DateTimeField(blank=True, null=True, auto_now_add=True)
    updated = models.DateTimeField(blank=True, null=True, auto_now=True)
    duration = models.FloatField(default=0, blank=True, null=True)
    position = models.CharField(max_length=45, blank=True, null=True)
    exposure_time = models.FloatField(blank=True, null=True)
    nb_images = models.IntegerField(blank=True, null=True)
    dithering = models.BooleanField(default=False)
    complete = models.BooleanField(default=False)

    class Meta:
        managed = True
        db_table = 'plan'

    def __str__(self):
        return (str(self.name))




class PlcDeviceStatus(models.Model):
    device = models.ForeignKey('PlcDevice', on_delete=models.CASCADE, related_name='current_status')
    created = models.DateTimeField(auto_now_add=True, editable=False, blank=True)
    outside_temp = models.DecimalField(max_digits=15, decimal_places=8, blank=True, null=True)
    outside_temp_unit = models.CharField(max_length=45, blank=True, null=True)
    outside_humidity = models.DecimalField(max_digits=15, decimal_places=8, blank=True, null=True)
    outside_humidity_unit = models.CharField(max_length=45, blank=True, null=True)
    pressure = models.DecimalField(max_digits=15, decimal_places=8, blank=True, null=True)
    pressure_unit = models.CharField(max_length=45, blank=True, null=True)
    rain_rate = models.DecimalField(max_digits=15, decimal_places=8, blank=True, null=True)
    rain_rate_unit = models.CharField(max_length=45, blank=True, null=True)
    wind_speed = models.DecimalField(max_digits=15, decimal_places=8, blank=True, null=True)
    wind_speed_unit = models.CharField(max_length=45, blank=True, null=True)
    wind_dir = models.DecimalField(max_digits=15, decimal_places=8, blank=True, null=True)
    wind_dir_unit = models.CharField(max_length=45, blank=True, null=True)
    dew_point = models.DecimalField(max_digits=15, decimal_places=8, blank=True, null=True)
    dew_point_unit = models.CharField(max_length=45, blank=True, null=True)
    analog = models.DecimalField(max_digits=15, decimal_places=8, blank=True, null=True)
    analog_unit = models.CharField(max_length=45, blank=True, null=True)
    digital = models.DecimalField(max_digits=15, decimal_places=8, blank=True, null=True)
    digital_unit = models.CharField(max_length=45, blank=True, null=True)
    inside_temp = models.DecimalField(max_digits=15, decimal_places=8, blank=True, null=True)
    inside_temp_unit = models.CharField(max_length=45, blank=True, null=True)
    inside_humidity = models.DecimalField(max_digits=15, decimal_places=8, blank=True, null=True)
    inside_humidity_unit = models.CharField(max_length=45, blank=True, null=True)
    wind_dir_cardinal = models.CharField(max_length=45, blank=True, null=True)
    wind_dir_cardinal_unit = models.CharField(max_length=45, blank=True, null=True)
    sensor_temperature = models.DecimalField(max_digits=15, decimal_places=8, blank=True, null=True)
    sensor_temperature_unit = models.CharField(max_length=45, blank=True, null=True)
    sky_temperature = models.DecimalField(max_digits=15, decimal_places=8, blank=True, null=True)
    sky_temperature_unit = models.CharField(max_length=45,  blank=True, null=True)
    status = models.CharField(max_length=45, blank=True, null=True)
    current = models.DecimalField(max_digits=15, decimal_places=8, blank=True, null=True)
    current_unit = models.CharField(max_length=45, blank=True, null=True)
    is_safe = models.BooleanField(default=True)
    plc_mode = models.CharField(max_length=4, null=True)
    lights = models.CharField(max_length=3, null=True)
    shutters = models.CharField(max_length=5, null=True)

    class Meta:
        managed = True
        db_table = 'plc_devices_status'

    def __str__(self):
        return (str(self.__dict__))

    '''
        TODO : This function is Ugly,
        we should change this with a function pointer array
        and setters getters for each attribute
    '''
    def setValue(self, key, value, unit=""):
        if key == "Temperature_outside":
            self.outside_temp = value
            self.outside_temp_unit = unit
        elif key == "Humidity_outside":
            self.outside_humidity = value
            self.outside_humidity_unit = unit
        elif key == "_Pressure":
            self.pressure = value
            self.pressure_unit = unit
        elif key == "Rain_boolean": # RainRate
            self.rain_rate = value
            self.rain_rate_unit = 'boulean'
        elif key == "Wind_speed":
            self.wind_speed = value
            self.wind_speed_unit = unit
        elif key == "Wind_dir":
            self.wind_dir = value
            self.wind_dir_unit = unit
        elif key == "_DewPoint":
            self.dew_point = value
            self.dew_point_unit = unit
        elif key == "_analog":
            self.analog = value
            self.analog_unit = unit
        elif key == "_digital":
            self.digital = value
            self.digital_unit = unit
        elif key == "_InsideTemp":
            self.inside_temp = value
            self.inside_temp_unit = unit
        elif key == "_InsideHumidity":
            self.inside_humidity = value
            self.inside_humidity_unit = unit
        elif key == "_WindDirCardinal":
            self.wind_dir_cardinal = value
            self.wind_dir_cardinal_unit = unit
        elif key == "_SensorTemperature":
            self.sensor_temperature = value
            self.sensor_temperature_unit = unit
        elif key == "_SkyTemperature":
            self.sky_temperature = value
            self.sky_temperature_unit = unit
        # PM 20190222 try patch
        elif key == "Error_code":
            self.status = value
        elif key == "current":
            self.current = value
            self.current_unit = unit
        elif key == "mode":
            self.plc_mode = value
        elif key == "is_safe":
            self.is_safe = value
        elif key == "LIGHTS":
            self.lights = value
        elif key == "SHUTTERS":
            self.shutters = value
        else:
            # PM 20190222 ignore unrecognized
            #raise KeyError("Key " + str(key) + " unrecognized")
            pass

class PlcDevice(Device):
    #device = models.ForeignKey('Plc', on_delete=models.CASCADE, related_name='plc_devices')
    name = models.CharField(max_length=45, blank=True, null=True)
    desc = models.TextField(blank=True, null=True)
    created = models.DateTimeField(blank=True, null=True, auto_now_add=True)
    updated = models.DateTimeField(blank=True, null=True, auto_now=True)


    class Meta:
        managed = True
        db_table = 'plc_devices'

    def __str__(self):
        return str(self.name)


#class Plc(Device):
 #   last_update_status = models.DateTimeField(blank=True, null=True)
#    i
 #   class Meta:
  #      managed = True
   #     db_table = 'plc'


class Institute(models.Model):
    name = models.CharField(max_length=100,blank=False,null=False,unique=True)
    quota = models.IntegerField(validators=[MinValueValidator(0), MaxValueValidator(100)])
    #representative_user = models.ForeignKey("PyrosUser", on_delete=models.DO_NOTHING,related_name="institutes",default=1)

    def __str__(self) -> str:
        return str(self.name)

class PyrosUser(AbstractUser):
    username = models.CharField(max_length=255, blank=False, null=False, unique=True)
    is_active = models.BooleanField(default='False')
    first_time = models.BooleanField(default='False')
    country = models.ForeignKey(
        Country, on_delete=models.DO_NOTHING, related_name="pyros_users")
    user_level = models.ManyToManyField(
        'UserLevel', related_name="pyros_users")
    desc = models.TextField(blank=True, null=True)
    created = models.DateTimeField(blank=True, null=True, auto_now_add=True)
    updated = models.DateTimeField(blank=True, null=True, auto_now=True)
    tel = models.CharField(max_length=45, blank=True, null=True)
    address = models.TextField(max_length=100, blank=True, null=True)
    laboratory = models.CharField(max_length=45, blank=True, null=True)
    institute = models.ForeignKey(Institute, on_delete=DO_NOTHING, related_name="pyros_users")
    is_institute_representative = models.BooleanField(default=False)
    motive_of_registration = models.TextField(max_length=300, blank=False, default="")
    # last_connect = models.DateTimeField(blank=True, null=True)
    # cur_connect = models.DateTimeField(blank=True, null=True)
    # putvalid_beg = models.DateTimeField(blank=True, null=True)
    # putvalid_end = models.DateTimeField(blank=True, null=True)
    # acqvalid_beg = models.CharField(max_length=45, blank=True, null=True)
    # acqvalid_end = models.CharField(max_length=45, blank=True, null=True)
    # quota = models.FloatField(blank=True, null=True)
    # quota_rea = models.FloatField(blank=True, null=True)
    # u_priority = models.IntegerField(blank=True, null=True)
    # p_priority = models.IntegerField(blank=True, null=True)
    # dir_level = models.IntegerField(blank=True, null=True)
    # can_del_void_req = models.BooleanField(default=False)
    validator = models.ForeignKey("PyrosUser", on_delete=models.DO_NOTHING, null=True, related_name="pyros_users")
    class Meta:
        managed = True
        db_table = 'pyros_user'

    def __str__(self):
        return (str(self.get_username()))

    def user_username(self):
        return self.__str__()
    user_username.short_description = "Username"

    def get_priority(self)->int:
        """
        return maximum priority of all roles of the user

        Returns:
            int: maximum priority
        """
        return PyrosUser.objects.get(id = self.id).user_level.all().aggregate(Max("priority"))["priority__max"]

    def get_roles_str(self)->str:
        """
        return string that represent all roles assigned to the user

        Returns:
            str: string of all roles assigned to user
        """
        roles_str = ""
        # loop on all roles assigned to user
        for role in PyrosUser.objects.get(id = self.id).user_level.all():
            roles_str += role.name+ ", "
        return roles_str[:-2]

    def get_list_of_roles(self)->list:
        """
        return list of all roles assigned to the user

        Returns:
            list: list of all roles assigned to user
        """
        return PyrosUser.objects.get(id = self.id).user_level.all().values_list("name",flat=True)

    # Note for the next functions : We take the first result of the query because it should be only one result with the filter applied since each UserLevel has a unique priority.
    def get_max_priority_desc(self)->str:
        """
        return the desc of the maximum priority of all roles assigned to user

        Returns:
            str:  desc of the maximum priority of all roles assigned to user
        """
        return PyrosUser.objects.get(id = self.id).user_level.filter(priority=self.get_priority())[0].desc

    def get_max_priority_quota(self)->int:
        """
        return the quota of the maximum priority of all roles assigned to user

        Returns:
            int:  quota of the maximum priority of all roles assigned to user
        """
        return PyrosUser.objects.get(id = self.id).user_level.filter(priority=self.get_priority())[0].quota



# class Schedule(models.Model):
#     created = models.DateTimeField(blank=True, null=True, auto_now_add=True)
#     plan_start = models.DecimalField(
#         default=0.0, max_digits=15, decimal_places=8)
#     plan_end = models.DecimalField(
#         default=0.0, max_digits=15, decimal_places=8)
#     flag = models.CharField(max_length=45, blank=True, null=True)
#
#     class Meta:
#         managed = True
#         db_table = 'schedule'
#
#     def __str__(self):
#         return (str(self.created))


class Schedule(models.Model):
    sequences = models.ManyToManyField(
        'Sequence', through='ScheduleHasSequences', related_name='schedules')
    created = models.DateTimeField(blank=True, null=True, auto_now_add=True)
    plan_night_start = models.DecimalField(
        default=0.0, max_digits=15, decimal_places=8)
    plan_end = models.DecimalField(
        default=0.0, max_digits=15, decimal_places=8)
    plan_start = models.DecimalField(
        default=0.0, max_digits=15, decimal_places=8)
    flag = models.CharField(max_length=45, blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'schedule'
        verbose_name_plural = "Schedules"

    def __str__(self):
        return (str(self.created))



class Period(models.Model):
    today = timezone.now()
    today_plus_six_months = today + relativedelta(months=+6)
    start_date = models.DateField(blank=True, null=True, default=timezone.now,editable=True)    
    end_date =  models.DateField(blank=True, null=True, default=today_plus_six_months,editable=True)    

    """ class Meta:
        # constrains start_date and duration to be unique (We don't want to have multiple records in db that represent the same period)
        constraints = [
            models.UniqueConstraint(fields=["start_date","duration"], name="unique_period")   
        ]
    """
    def __str__(self) -> str:
        return self.start_date.strftime("%d/%m/%Y")+ " to "+ self.end_date.strftime("%d/%m/%Y")
    def is_currently_active(self)->bool:
        today = datetime.utcnow().date()
        return self.start_date <= today < self.end_date
            
class ScientificProgram(models.Model):

    name = models.CharField(max_length=45, blank=True, null=True)
    desc = models.TextField(blank=True, null=True)
    quota = models.IntegerField(blank=True, null=True)
    priority = models.IntegerField(blank=True, null=True)
    institute = models.ForeignKey(Institute,on_delete=models.CASCADE,related_name="scientific_programs")
    
    class Meta:
        managed = True
        db_table = 'scientific_program'

    def __str__(self):
        return (str(self.name))

class SP_Period(models.Model):
    period = models.ForeignKey(Period, on_delete=models.DO_NOTHING, related_name="SP_Periods")
    scientific_program = models.ForeignKey(ScientificProgram, on_delete=models.DO_NOTHING, related_name="SP_Periods")
    referee1_vote = models.BooleanField(default=True)
    referee1_vote = models.BooleanField(default=True)
    is_valid = models.BooleanField(default=True)
    """ class Meta:
        constraints = models.UniqueConstraint(fields=["period","scientific_program"], name="unique_SP_period") """
    def is_currently_active(self):
        return self.period.is_currently_active()
class SP_Period_User(models.Model):
    SP_Period = models.ForeignKey(SP_Period, on_delete=models.CASCADE,related_name="SP_Period_Users")
    user = models.ForeignKey("PyrosUser", on_delete=models.CASCADE,related_name="SP_Period_Users")
    is_SP_PI = models.BooleanField(default=False)

    """ class Meta:
        constraints = models.UniqueConstraint(fields=["SP_Period","user"], name="unique_SP_period_user") """

class Sequence(models.Model):

    """ Definition of Status enum values """

    INCOMPLETE = "INCPL"
    COMPLETE = "CPL"
    TOBEPLANNED = "TBP"
    PLANNED = "PLND"
    PENDING = "PNDG"
    EXECUTING = "EXING"
    EXECUTED = "EXD"
    REJECTED = "RJTD"
    INVALID = "INVL"
    CANCELLED = "CNCLD"
    UNPLANNABLE = "UNPLN"
    STATUS_CHOICES = (
        (INCOMPLETE, "Incomplete"),
        (COMPLETE, "Complete"),
        (TOBEPLANNED, "To be planned"),
        (PLANNED, "Planned"),
        (UNPLANNABLE, "Unplannable"),
        (PENDING, "Pending"),
        (EXECUTED, "Executed"),
        (EXECUTING, "Executing"),
        (REJECTED, "Rejected"),
        (CANCELLED, "Cancelled"),
        (INVALID, "Invalid"),
    )

    request = models.ForeignKey(
        Request, on_delete=models.CASCADE, related_name="sequences")
    name = models.CharField(max_length=45, blank=True, null=True)
    desc = models.TextField(blank=True, null=True)
    created = models.DateTimeField(blank=True, null=True, auto_now_add=True)
    updated = models.DateTimeField(blank=True, null=True, auto_now=True)
    is_alert = models.BooleanField(default=False)
    status = models.CharField(
        max_length=11, blank=True, null=True, choices=STATUS_CHOICES)
    target_coords = models.CharField(max_length=100, blank=True, null=True)
    with_drift = models.BooleanField(default=False)
    priority = models.IntegerField(blank=True, null=True)
    analysis_method = models.CharField(max_length=45, blank=True, null=True)
    moon_min = models.IntegerField(blank=True, null=True)
    alt_min = models.IntegerField(blank=True, null=True)
    type = models.CharField(max_length=6, blank=True, null=True)
    img_current = models.CharField(max_length=45, blank=True, null=True)
    img_total = models.CharField(max_length=45, blank=True, null=True)
    not_obs = models.BooleanField(default=False)
    obsolete = models.BooleanField(default=False)
    processing = models.BooleanField(default=False)
    flag = models.CharField(max_length=45, blank=True, null=True)
    jd1 = models.DecimalField(default=0.0, max_digits=15, decimal_places=8)
    jd2 = models.DecimalField(default=0.0, max_digits=15, decimal_places=8)
    t_prefered = models.DecimalField(
        default=-1.0, max_digits=15, decimal_places=8)
    duration = models.DecimalField(
        default=-1.0, max_digits=15, decimal_places=8)
    overhead = models.DecimalField(default=0, max_digits=15, decimal_places=8)

    ra = models.FloatField(blank=True, null=True)
    dec = models.FloatField(blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'sequence'

    def __str__(self):
        return (str(self.name))


class ScheduleHasSequences(models.Model):
    # (EP) TODO: C'est pas un pb d'utiliser 2 fois le meme nom "shs" pour 2 choses differentes ???!!!
    schedule = models.ForeignKey(
        'Schedule', on_delete=models.CASCADE, related_name="shs")
    sequence = models.ForeignKey(
        'Sequence', on_delete=models.CASCADE, related_name="shs")

    status = models.CharField(
        max_length=11, blank=True, null=True, choices=Sequence.STATUS_CHOICES)
    desc = models.CharField(max_length=45, blank=True, null=True)
    tsp = models.DecimalField(default=-1.0, max_digits=15, decimal_places=8)
    tep = models.DecimalField(default=-1.0, max_digits=15, decimal_places=8)
    deltaTL = models.DecimalField(
        default=-1.0, max_digits=15, decimal_places=8)
    deltaTR = models.DecimalField(
        default=-1.0, max_digits=15, decimal_places=8)

    class Meta:
        managed = True
        db_table = 'schedule_has_sequences'


class SiteWatch(models.Model):
    OPEN = "OPEN"
    CLOSE = "CLOSE"
    ON = "ON"
    OFF = "OFF"

    global_status = models.CharField(max_length=255, blank=True, null=True)
    updated = models.DateTimeField(blank=True, null=True, auto_now=True)
    lights = models.CharField(max_length=45, blank=True, null=True)
    dome = models.CharField(max_length=45, blank=True, null=True)
    doors = models.CharField(max_length=45, blank=True, null=True)
    temperature = models.FloatField(blank=True, null=True)
    shutter = models.FloatField(blank=True, null=True)
    pressure = models.FloatField(blank=True, null=True)
    humidity = models.FloatField(blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'sitewatch'
        verbose_name_plural = "Site watches"

    def __str__(self):
        return (str(self.__dict__))

    # TODO
    def setGlobalStatus(self):
        self.global_status = ""
        if self.doors and self.doors.find("open") != -1:
            self.global_status += "DOOR_OPEN "
        if self.lights and self.lights == "on":
            self.global_status += "LIGHTS_ON "
        if self.temperature and float(self.temperature) > 40:
            self.global_status += "TOO_HOT "
        if self.humidity and float(self.humidity) > 80:
            self.global_status += "HUMIDITY_TOO_HIGH "
        if self.global_status == "":
            self.global_status = "OK"
        return 0

    # TODO HANDLE FLAT LAMPS ...
    def setAttribute(self, key, value):
        self.doors = ""
        if key == "InsideHumidity":
            self.humidity = value
        elif key == "Pressure":
            self.pressure = value
        elif key == "InsideTemp":
            self.temperature = value
        else:
            return 1
        return 0


class SiteWatchHistory(models.Model):
    id = models.IntegerField(primary_key=True)

    class Meta:
        managed = True
        db_table = 'sitewatchhistory'
        verbose_name_plural = "Site watch histories"


class StrategyObs(models.Model):
    name = models.CharField(max_length=45, blank=True, null=True)
    desc = models.TextField(blank=True, null=True)
    xml_file = models.CharField(max_length=45, blank=True, null=True)
    is_default = models.BooleanField(default=False)

    class Meta:
        managed = True
        db_table = 'strategyobs'
        verbose_name_plural = "Strategy obs"

    def __str__(self):
        return (str(self.name))


#TODO: à virer car utilisé pour Celery (ou bien à utiliser pour les agents)
class TaskId(models.Model):
    task = models.CharField(max_length=45, blank=True, null=True)
    created = models.DateTimeField(blank=True, null=True, auto_now_add=True)
    task_id = models.CharField(max_length=45, blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'task_id'

    def __str__(self):
        return (str(self.task) + " - " + str(self.task_id))



class Telescope(Device):
    TELESCOPE = "Telescope"

    mount_type = models.CharField(max_length=9, blank=True, null=True)
    diameter = models.FloatField(blank=True, null=True)
    latitude = models.FloatField(blank=True, null=True)
    longitude = models.FloatField(blank=True, null=True)
    sens = models.CharField(max_length=1, blank=True, null=True)
    altitude = models.FloatField(blank=True, null=True)
    readout_time = models.IntegerField(blank=True, null=True)
    slew_time = models.IntegerField(blank=True, null=True)
    slew_dead = models.IntegerField(blank=True, null=True)
    slew_rate_max = models.FloatField(blank=True, null=True)
    horizon_type = models.CharField(max_length=45, blank=True, null=True)
    horizon_def = models.FloatField(blank=True, null=True)
    lim_dec_max = models.FloatField(blank=True, null=True)
    lim_dec_min = models.FloatField(blank=True, null=True)
    lim_ha_rise = models.FloatField(blank=True, null=True)
    lim_ha_set = models.FloatField(blank=True, null=True)
    address = models.CharField(max_length=45, blank=True, null=True)
    night_elev_sun = models.FloatField(blank=True, null=True)
    mpc_code = models.CharField(max_length=45, blank=True, null=True)
    class Meta:
        managed = True
        db_table = 'telescope'

    def __str__(self):
        return (self.name)


class TelescopeCommand(models.Model):
    created = models.DateTimeField(blank=True, null=True, auto_now_add=True)
    answered = models.DateTimeField(blank=True, null=True)
    request = models.CharField(blank=False, null=False, max_length=255)
    answer = models.TextField(null=True, blank=True)
    class Meta:
        managed = True
        db_table = "telescopecommand"

    def __str__(self):
        return str(self.request) + str(self.created)


class UserLevel(models.Model):
    name = models.CharField(max_length=45, blank=True, null=True)
    desc = models.TextField(blank=True, null=True)
    priority = models.IntegerField(blank=True, null=True)
    quota = models.FloatField(blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'user_level'

    def __str__(self):
        return (str(self.name))


class Version(models.Model):
    module_name = models.CharField(max_length=45, blank=True, null=True)
    version = models.CharField(max_length=15, blank=True, null=True)
    created = models.DateTimeField(blank=True, null=True, auto_now_add=True)
    updated = models.DateTimeField(blank=True, null=True, auto_now=True)

    class Meta:
        managed = True
        db_table = 'version'

    def __str__(self):
        return (str(self.module_name) + " - " + str(self.version))


class WeatherWatch(models.Model):
    WIND_LIMIT = 100
    RAIN_LIMIT = 5

    global_status = models.CharField(max_length=255, blank=True, null=True)
    updated = models.DateTimeField(blank=True, null=True, auto_now=True)
    humidity = models.FloatField(blank=True, null=True)
    wind = models.FloatField(blank=True, null=True)
    wind_dir = models.CharField(max_length=45, blank=True, null=True)
    temperature = models.FloatField(blank=True, null=True)
    pressure = models.FloatField(blank=True, null=True)
    rain = models.FloatField(blank=True, null=True)
    cloud = models.FloatField(blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'weatherwatch'
        verbose_name_plural = "Weather watches"

    def __str__(self):
        return (str(self.__dict__))

    # TODO
    def setGlobalStatus(self):
        #print(self.rain)
        self.global_status = ""
        if self.rain and float(self.rain) > 0:
            self.global_status += "RAINING "
        if self.wind and float(self.wind) > 80:
            self.global_status += "WIND_TOO_STRONG "
        if self.humidity and float(self.humidity) > 80:
            self.global_status += "HUMIDITY_TOO_HIGH "
        if self.cloud and float(self.cloud) > 10:
            self.global_status += "TOO_MUCH_CLOUDY "
        if self.global_status == "":
            self.global_status = "OK"
        return 0

    def setAttribute(self, key, value):
        if key == "Rain_boolean":
            self.rain = value
        elif key == "_CloudRate":
            self.cloud = value
        elif key == "Wind_speed":
            self.wind = value
        elif key == "Wind_direction":
            self.wind_dir = value
        elif key == "Temperature_outside":
            self.temperature = value
        elif key == "Humidity_outside":
            self.humidity = value
        elif key == "_Pressure":
            self.pressure = value
        else:
            return 1
        return 0


class WeatherWatchHistory(models.Model):
    datetime = models.DateTimeField(blank=True, null=True, auto_now_add=True)
    humid_int = models.FloatField(blank=True, null=True)
    humid_ext = models.CharField(max_length=45, blank=True, null=True)
    wind = models.CharField(max_length=45, blank=True, null=True)
    wind_dir = models.CharField(max_length=45, blank=True, null=True)
    temp_int = models.CharField(max_length=45, blank=True, null=True)
    temp_ext = models.CharField(max_length=45, blank=True, null=True)
    pressure = models.CharField(max_length=45, blank=True, null=True)
    rain = models.CharField(max_length=45, blank=True, null=True)
    dwn = models.CharField(max_length=45, blank=True, null=True)

    class Meta:
        managed = True
        db_table = 'weatherwatchhistory'
        verbose_name_plural = "Weather watch histories"

    def __str__(self):
        return (str(self.datetime))