#!/bin/bash

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

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

#=================================================
# LOAD 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)
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_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)

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

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================

# 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

# Cleaning legacy permissions
if ynh_legacy_permissions_exists; then
	ynh_legacy_permissions_delete_all

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

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up YOURLS before upgrading (may take a while)..." --weight=1

# 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
#=================================================
# Download, check integrity, uncompress and patch the source from app.src
# Create a temporary directory along with /user/plugin sub directory in it
tmpdir="$(mktemp -d)"
mkdir -p "$tmpdir/user/"

# Backup the app files in the temp dir
cp -a "$final_path/index.php" "$tmpdir"
cp -a "$final_path/.htaccess" "$tmpdir"
cp -a "$final_path/user/config.php" "$tmpdir/user"

# Remove the app directory securely
ynh_secure_remove --file="$final_path"

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

# Copy the app files from tmp to final_path
cp -a "$tmpdir/index.php" "$final_path"
cp -a "$tmpdir/.htaccess" "$final_path"
cp -a "$tmpdir/user/config.php" "$final_path/user"

#remove tmp dir
ynh_secure_remove "$tmpdir"

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

ynh_add_nginx_config

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Making sure dedicated system user exists..." --weight=3

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

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading PHP-FPM configuration..." --weight=4

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

#=================================================
# MODIFY A CONFIG FILE
#=================================================
ynh_script_progression --message="Modifying a config file..." --weight=2

# Verify the checksum and backup the file if it's different
ynh_backup_if_checksum_is_different --file="$final_path/user/config.php"

cp ../conf/config.php $final_path/user/config.php

ynh_replace_string --match_string="__DB_NAME__" --replace_string="$db_name" --target_file="$final_path/user/config.php"
ynh_replace_string --match_string="__DB_PWD__" --replace_string="$db_pwd" --target_file="$final_path/user/config.php"
ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain" --target_file="$final_path/user/config.php"
ynh_replace_string --match_string="__PATH__" --replace_string="${path_url%/}" --target_file="$final_path/user/config.php"
ynh_replace_string --match_string="__RANDOM__" --replace_string="$(ynh_string_random 24)" --target_file="$final_path/user/config.php"

# Recalculate and store the config file checksum into the app settings
ynh_store_file_checksum --file="$final_path/user/config.php"

#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

# Restore permissions on app files
chown -R $app: $final_path

#=================================================
# 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 YOURLS completed" --last