#!/usr/bin/env bash

# In docker/ folder
root_folder=$(pwd 2>&1)

already_uptodate="Déjà à jour."
check_files=("docker-compose.yml" "Dockerfile" "install/requirements.in" "install/requirements.txt" "doc_rst/requirements.in" "doc_rst/requirements.txt")
check_files="${check_files[@]}"
function git_pull {
    dir=$1
    #echo $check_files
    cd $dir
    gitpull_output=$(git pull 2>&1)
    # IF git pull error (other than $already_uptodate) => stop
    if [[ $? -eq 1  && "$gitpull_output" != "$already_uptodate" ]]; then
        echo "Git pull failed. Error message is:"
        echo $gitpull_output
        exit 1
    fi
    echo $gitpull_output
    # test only
    #gitpull_output=$gitpull_output."Dockerfile "
    #gitpull_output=$gitpull_output."doc_rst/requirements.txt "
    # Check if exists file changed that requires rebuild
    #for file in "${check_files[@]}"
    for f in $check_files ; do
        #echo "check $f"
        #if [ $f == "doc_rst/requirements.txt" ] ; then    
        if grep -q "$f" <<< "$gitpull_output" ; then    
            echo "WARNING : One of docker related files ($f) has been changed. You should build again the PyROS Image before going on with the UPDATE..."
            echo "=> Build & start again the PyROS image ? ([y]/n)"
            read input ; [ -z ${input} ] && input="y"
            #echo $answer
            [ $input != "y" ] && exit 1
            #echo $root_folder
            (cd $root_folder && ./PYROS_DOCKER_BUILD && ./PYROS_DOCKER_START)
            # BUILF only once !!!
            break
        fi
    done
    cd - > /dev/null
}


# PRE-CONDITION : pyros container must be running
# If no container is running Start it
if ! [ $(docker ps | grep 'pyros' | wc -l) -eq 4 ] ; then
    echo "pyros-db or pyros weren't running, starting them..."
    ./PYROS_DOCKER_START
    #./PYROS_DOCKER_START.bat
fi

# I - Update Guitastro
echo
echo "**********************************"
echo "I - Updating Guitastro source code"
echo "**********************************"
echo
# Go to GuitAstro/ folder
git_pull ../vendor/guitastro/
#check_files=("docker-compose.yml" "Dockerfile" "install/requirements.in")
#git_pull ../vendor/guitastro/ ${check_files[@]}


# II - Update PyROS
#cd $root_folder
echo
echo "**********************************"
echo "II - Updating PyROS source code"
echo "**********************************"
echo
# Go to PYROS/ folder
git_pull ../
# Check if exists file changed that requires rebuild
#check_files=("docker-compose.yml" "Dockerfile" "install/requirements.in")


# TODO : test if git pull worked and if git pull changed dockerfile, requirements.in, docker-compose.yml
# Tell user to rebuild


# III - Update all observatories with git repo
echo
echo "**********************************"
echo "III - Updating PyROS Observatory(ies)"
echo "**********************************"
echo
# Go to PYROS observatories folder
cd ../../PYROS_OBSERVATORY/
for dir in * ; do
    if [ -d $dir/.git ] ; then 
        echo "Updating observatory $dir source code"
        git_pull $dir
        #cd ../
    fi
done
cd ../PYROS/docker/

# IV - pyros.py update => update BD + doc
echo
echo "**********************************"
echo "IV - Updating PyROS Doc & Database"
echo "**********************************"
echo
docker compose exec pyros python3 pyros.py update