#!/bin/bash

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

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

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

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_app_setting_get --app=$app --key=path)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
language=$(ynh_app_setting_get --app=$app --key=language)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)
phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)

#=================================================
# CHECK VERSION
#=================================================

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..."

# Fix is_public as a boolean value
if [ "$is_public" = "Yes" ]; then
	ynh_app_setting_set --app=$app --key=is_public --value=1
	is_public=1
elif [ "$is_public" = "No" ]; then
	ynh_app_setting_set --app=$app --key=is_public --value=0
	is_public=0
fi

# 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

#=================================================
# GET THE CALDAV APP
#=================================================

agendav_app_check_installation() {
	echo $(yunohost app list | grep "id: $1")
}

# Check whether Baïkal or Radicale is installed
baikal_install=$(agendav_app_check_installation "baikal")
radicale_install=$(agendav_app_check_installation "radicale")
if [ -n "$baikal_install" ]
then
    caldav_app=baikal
    caldav_baseurl="/cal.php/"
elif [ -n "$radicale_install" ]
then
    caldav_app=radicale
    caldav_baseurl=/
else
    ynh_die --message="Please install Baïkal or Radicale before AgenDAV."
fi

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up AgenDAV before upgrading (may take a while)..." --weight=9

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

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Upgrading source files..."0

	# Download, check integrity, uncompress and patch the source from app.src
	ynh_setup_source --dest_dir="$final_path"
fi

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading NGINX web server configuration..." --weight=2

# Copy and set NGINX configuration
ynh_add_nginx_config

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

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

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

# Create a dedicated PHP-FPM config
ynh_add_fpm_config --package="$extra_php_dependencies"

#=================================================
# SPECIFIC SETUP
#=================================================
# CREATE SETTINGS.PHP
#=================================================
ynh_script_progression --message="Upgrading AgenDAV configuration..." --weight=2

# Generate random encryption key
encryptkey=$(ynh_app_setting_get --app=$app --key=encryptkey)

# Copy and set AgenDAV configuration
timezone=$(cat /etc/timezone)

caldav_domain=$(ynh_app_setting_get --app=$caldav_app --key=domain)
caldav_path=$(ynh_app_setting_get --app=$caldav_app --key=path)
caldav_url="https://${caldav_domain}${caldav_path%/}"

conf_path="${final_path}/web/config/settings.php"

ynh_backup_if_checksum_is_different --file="$conf_path"

cp ../conf/settings.php "$conf_path"

logdir=/var/log/$app

ynh_replace_string --match_string="__DBUSER__" --replace_string="$db_name"        --target_file="$conf_path"
db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
ynh_replace_string --match_string="__DBPASS__" --replace_string="$db_pwd"         --target_file="$conf_path"
ynh_replace_string --match_string="__DBNAME__" --replace_string="$db_name"        --target_file="$conf_path"
ynh_replace_string --match_string="__ENCRYPTKEY__" --replace_string="$encryptkey" --target_file="$conf_path"
ynh_replace_string --match_string="__LOGDIR__" --replace_string="$logdir"         --target_file="$conf_path"
ynh_replace_string --match_string="__TIMEZONE__" --replace_string="$timezone"     --target_file="$conf_path"
ynh_replace_string --match_string="__LANGUAGE__" --replace_string="$language"     --target_file="$conf_path"
ynh_replace_string --match_string="__CALDAV_BASEURL__" --replace_string="${caldav_url}${caldav_baseurl}" --target_file="$conf_path"
ynh_replace_string --match_string="__CALDAV_DOMAIN__" --replace_string="$caldav_domain"                  --target_file="$conf_path"

#=================================================
# STORE THE CHECKSUM OF THE CONFIG FILE
#=================================================

ynh_store_file_checksum --file="$conf_path"

#=================================================
# RUN DATABASE MIGRATIONS (INCLUDES INITIALIZATION)
#=================================================
ynh_script_progression --message="Upgrading AgenDAV..."

(
	cd $final_path
	php${phpversion} agendavcli migrations:migrate --no-interaction
)

#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Upgrading logrotate configuration..." --weight=2

mkdir -p $logdir
chown -R $app: $logdir

# Use logrotate to manage application logfile(s)
ynh_use_logrotate --non-append

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

chown -R root: $final_path

# Only agendav user should write here
chown -R $app ${final_path}/web/var/cache/{profiler,twig}

# The agendav user should read here, but does not need to write
# Other users should not be able to read as it stores passwords.
chown -R root:$app ${final_path}/web/config/
chmod -R 750 ${final_path}/web/config/

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..."

ynh_systemd_action --service_name=nginx --action=reload

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

ynh_script_progression --message="Upgrade of AgenDAV completed" --last