#!/bin/bash

# We retrieve app parameters
app=$YNH_APP_INSTANCE_NAME

# Backup the current version of the app, restore it if the upgrade fails
#if sudo yunohost backup list | grep -q ${app}-before-upgrade > /dev/null 2>&1; then     # Supprime l'ancienne archive seulement si e$
#        sudo yunohost backup delete ${app}-before-upgrade
#fi
#sudo yunohost backup create --ignore-hooks --apps $app --name ${app}-before-upgrade
EXIT_PROPERLY () {
        exit_code=$?
        if [ "$exit_code" -eq 0 ]; then
                exit 0  # Quitte sans erreur si le script se termine correctement.
        fi
        trap '' EXIT
        set +eu
        sudo yunohost app remove $app   # Supprime l'application avant de la restaurer.
        sudo yunohost backup restore --ignore-hooks ${app}-before-upgrade --apps $app --force   # Restore the backup if upgrade fail$
        ynh_die "Upgrade failed. The app was restored to the way it was before the failed upgrade."
}
#set -eu
#trap EXIT_PROPERLY EXIT

# Source app helpers
source /usr/share/yunohost/helpers

# We check variables are not empty
CHECK_VAR () {  # Vérifie que la variable n'est pas vide.
# $1 = Variable à vérifier
# $2 = Texte à afficher en cas d'erreur
        test -n "$1" || (echo "$2" >&2 && false)
}
CHECK_VAR "$app" "app name not set"

path=$(ynh_app_setting_get $app path)
domain=$(ynh_app_setting_get $app domain)
final_path=$(ynh_app_setting_get $app final_path)
finalnginxconf=$(ynh_app_setting_get $app finalnginxconf)
finalphpconf=$(ynh_app_setting_get $app finalphpconf)
calibre=$(ynh_app_setting_get $app calibre)
basicauthcreate=$(ynh_app_setting_get $app basicauthcreate)

# We check that calibre path is correct
CHECK_CALIBRE () {  # Vérifie la présence du / en début de path. Et son absence à la fin.
        if [ "${calibre:0:1}" != "/" ]; then    # Si le premier caractère n'est pas un /
                calibre="/$calibre"    # Ajoute un / en début de path
        fi
        if [ "${calibre:${#calibre}-1}" == "/" ] && [ ${#calibre} -gt 1 ]; then    # Si le dernier caractère est un / $
                calibre="${calibre:0:${#calibre}-1}"        # Supprime le dernier caractère
        fi
}

CHECK_CALIBRE

# We install dependencies
#sudo apt-get update -y
#sudo apt-get install php5-gd php5-sqlite php5-json php5-intl -y

# Install dependencies using Helpers
ynh_package_install_from_equivs ../conf/cops-deps.control \
|| ynh_die "Unable to install dependencies"

# Removal of old folder and restart from fresh
sudo rm -rf $final_path
sudo mkdir -p $final_path

# We download the sources and check the md5sum
cops_file=`sudo cat ../sources/source_file`;
sudo wget -nv -i ../sources/source_url -O $cops_file
sudo md5sum -c ../sources/source_md5 --status || (echo "Corrupt source" >&2 && false)
sudo unzip ${cops_file} -d $final_path

# Site adjustments
sed -i "s@CALIBRETOCHANGE@$calibrepath@g" ../conf/config_local.php
timezone=`sudo cat /etc/timezone`;
sed -i "s@TIMEZONETOCHANGE@$timezone@g" ../conf/config_local.php

sudo cp ../conf/config_local.php $final_path
sudo cp ../conf/robots.txt $final_path

# Create cops user and join nextcloud/owncloud/www-data groups
runninguser="${app}-ynh"
# 1.  Create the user
# Create a system account for COPS if it doesn't already exists
test="$(sudo grep ^${runninguser}: /etc/passwd)"
if [ -n "${test}" ]; then
    echo "The user $runninguser does not exist, we can create it"
    sudo useradd -c "$runninguser system account" \
       -d $final_path --system --user-group $runninguser \
       || ynh_die "Unable to create $runninguser system account"
else
    echo "The user $runninguser exists, no need to create it"
fi
ynh_app_setting_set "$app" runninguser "$runninguser"

# 2. Add cops-ynh to groups www-data and nextcloud/owncloud if they exist
sudo usermod -a -G www-data $runninguser
for filesharing in "nextcloud" "owncloud"; do
    app_id=$(sudo yunohost app list --installed -f "$filesharing" \
            --output-as json | grep -Po '"id":[ ]?"\K.*?(?=")' | head -1)
    [[ -z "$app_id" ]] || {
        sudo usermod -a -G $filesharing $runninguser
    }
done

# Set permissions
sudo chmod ug+rw -R $final_path
sudo chown -hR $runninguser:$runninguser $final_path

# Add basic auth if requested
if [ "$basicauthcreate" = "Yes" ];
then
	basicauthname=$(ynh_app_setting_get $app basicauthname)
	basicauthpass=$(ynh_app_setting_get $app basicauthpass)

        # Generation of the htpasswd file according https://www.nginx.com/resources/wiki/community/faq/
        SALT="$(openssl rand -base64 3)"
        (SHA1=$(printf "$basicauthpass$SALT" |
        openssl dgst -binary -sha1 | xxd -ps |
        sed 's#$#'"`echo -n $SALT | xxd -ps`"'#' |
        xxd -r -ps |
        base64);printf "$basicauthname:{SSHA}$SHA1\n" >> ../sources/htpasswd)
        sudo cp ../sources/htpasswd $final_path
        sudo chmod 440 $final_path/htpasswd
        sudo chown www-data:www-data $final_path/htpasswd

        # Modif nginx
        sed -i "s|^.*\bauth_basic\b.*$|       auth_basic \"Private Library\";|" ../conf/nginx.conf;
        sed -i "s|^.*\bauth_basic_user_file\b.*$|       auth_basic_user_file $final_path/htpasswd;|" ../conf/nginx.conf;
else
        echo "No basic auth";
fi

# Modify Nginx configuration file and copy it to Nginx conf.d directory
sed -i "s@PATHTOCHANGE@$path@g" ../conf/nginx.conf
sed -i "s@ALIASTOCHANGE@$final_path/@g" ../conf/nginx.conf
sed -i "s@NAMETOCHANGE@$app@g" ../conf/nginx.conf
sudo cp ../conf/nginx.conf $finalnginxconf

# Modify php-fpm configuration file and copy it to php-fpm pool.d directory
sed -i "s@NAMETOCHANGE@$app@g" ../conf/php-fpm.conf
sed -i "s@FOLDERTOCHANGE@$final_path@g" ../conf/php-fpm.conf
sed -i "s@USERTOCHANGE@$runninguser@g" ../conf/php-fpm.conf
sudo cp ../conf/php-fpm.conf $finalphpconf
sudo chown root: $finalphpconf
sudo chmod 644 $finalphpconf

# Make app public if necessary
is_public=$(ynh_app_setting_get $app is_public)
if [ "$is_public" = "Yes" ];
then
	ynh_app_setting_set $app skipped_uris "/"
else
	ynh_app_setting_set $app protected_uris "/"
fi

# Reload Nginx and regenerate SSOwat conf
sudo service php5-fpm reload
sudo service nginx reload
sudo yunohost app ssowatconf