#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source /usr/share/yunohost/helpers

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..." --weight=1

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_app_setting_get --app=$app --key=path)
admin=$(ynh_app_setting_get --app=$app --key=admin)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)
db_user=$db_name
db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
datadir=$(ynh_app_setting_get --app=$app --key=datadir)
phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
prefix=$(ynh_app_setting_get --app=$app --key=prefix)
is_admin_public=$(ynh_app_setting_get --app=$app --key=is_admin_public)

#=================================================
# CHECK VERSION
#=================================================
ynh_script_progression --message="Checking version..."

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up $app before upgrading (may take a while)..." --weight=7

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
	# Restore it if the upgrade fails
	ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..." --weight=1

# If db_name doesn't exist, create it
if [ -z "$db_name" ]; then
	db_name=$(ynh_sanitize_dbid --db_name=$app)
	ynh_app_setting_set --app=$app --key=db_name --value=$db_name
fi

# If final_path doesn't exist, create it
if [ -z "$final_path" ]; then
	final_path=/var/www/$app
	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
fi

# If prefix doesn't exist, create it
if [ -z "$prefix" ]; then
	prefix="lime_"
	ynh_app_setting_set --app=$app --key=prefix --value=$prefix
fi

# If datadir doesn't exist, create it
if [ -z "$datadir" ]; then
	datadir=/home/yunohost.app/$app/upload
	ynh_app_setting_set --app=$app --key=datadir --value=$datadir
	mkdir -p $datadir
	# Remove upload if empty
	rmdir $datadir 2> /dev/null && mv "$final_path/upload" $datadir || true
	chown -R $app:www-data "$datadir"
	chmod -R o-rwx "$datadir"
	ln -s $datadir/upload $final_path/upload
fi

# Cleaning legacy permissions
if ynh_legacy_permissions_exists; then
	ynh_legacy_permissions_delete_all

	ynh_app_setting_delete --app=$app --key=is_public
fi

if ! ynh_permission_exists --permission="admin"; then
	# Create the required permissions
	if [ $is_admin_public -eq 1 ]
	then
		allowed_groups="visitors $admin"
	else
		allowed_groups="$admin"
	fi
	ynh_permission_create --permission="admin" --url="/admin" --allowed=$allowed_groups  --show_tile="true"

fi

# Create a permission if needed
if ! ynh_permission_exists --permission="api"; then
	ynh_permission_create --permission="api" --url="/api" --allowed="visitors" --show_tile="false" --protected="true"
fi

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Making sure dedicated system user exists..." --weight=1

# Create a dedicated user (if not existing)
ynh_system_user_create --username=$app --home_dir="$final_path"

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Upgrading source files..." --weight=1

	# Download, check integrity, uncompress and patch the source from app.src
	ynh_setup_source --dest_dir="$final_path" --keep="application/config/config.php $(echo $final_path/plugins/*) $final_path/application/config/config.php $final_path/upload"
fi

chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app:www-data "$final_path"
chmod 750 "$final_path/tmp"
chmod 750 "$final_path/application/config/"
chown -R $app:www-data "$datadir"
chmod 750 $datadir
ln -s $datadir/upload $final_path/upload 2> /dev/null || true

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading dependencies..." --weight=1

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading PHP-FPM configuration..." --weight=1

# Create a dedicated PHP-FPM config
ynh_add_fpm_config

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading NGINX web server configuration..." --weight=1

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# SPECIFIC UPGRADE
#=================================================
# UPDATE A CONFIG FILE
#=================================================
ynh_script_progression --message="Updating a configuration file..." --weight=1

ynh_add_config --template="../conf/config.php" --destination="$final_path/application/config/config.php"

chmod 400 "$final_path/application/config/config.php"
chown $app:$app "$final_path/application/config/config.php"

#=================================================
# UPGRADE DB
#=================================================
ynh_script_progression --message="Upgrading DB..."

# Migrate DB
ynh_exec_as "$app" php$phpversion $final_path/application/commands/console.php updatedb 

#=================================================
# GENERIC FINALIZATION
#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..." --weight=1

ynh_systemd_action --service_name=nginx --action=reload

#=================================================
# END OF SCRIPT
#=================================================

ynh_script_progression --message="Upgrade of $app completed" --last