#!/bin/bash

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

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

#=================================================
# LOAD SETTINGS
#=================================================
ynh_print_info "Loading installation settings..."

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get $app domain)
path_url=$(ynh_app_setting_get $app path)
final_path=$(ynh_app_setting_get $app final_path)
db_name=$(ynh_app_setting_get $app db_name)

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_print_info "Ensuring downward compatibility..."

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

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

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_print_info "Backing up the app before upgrading (may take a while)..."

# 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

#=================================================
# CHECK THE PATH
#=================================================

# Normalize the URL path syntax
path_url=$(ynh_normalize_url_path $path_url)

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_print_info "Upgrading source files..."

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

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_print_info "Upgrading nginx web server configuration..."

# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_print_info "Making sure dedicated system user exists..."

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

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_print_info "Upgrading php-fpm configuration..."

# Create a dedicated php-fpm config
ynh_add_fpm_config

#=================================================
# SPECIFIC UPGRADE
#=================================================
# UPGRADE BAIKAL
#=================================================
ynh_print_info "Upgrading baikal..."

# Run Baikal upgrade
php "${final_path}/bin/upgrade.sh"

# Cleanup old baikal-admin sessions
# since we may have changed owner of the session file
grep --files-with-matches --recursive "CSRF_TOKEN|s:" /var/lib/php/sessions | xargs rm -f

#=================================================
# UPGRADE BAIKAL CONFIGURATION
#=================================================
ynh_print_info "Upgrading baikal configuration..."

bk_conf="${final_path}/Specific/config.php"

# Verify the checksum and backup the file if it's different
ynh_backup_if_checksum_is_different "$bk_conf"

cp ../conf/config.php "$bk_conf"

ynh_replace_string "__TIMEZONE__" "$(cat /etc/timezone)" "$bk_conf"

password_hash=$(ynh_app_setting_get $app password_hash)
# If the password_hash is not in the app's config, recreate it from the password.
if [ -z "$password_hash" ]; then
    password=$(ynh_app_setting_get $app password)
    password_hash=$(echo -n admin:BaikalDAV:$password | md5sum | cut -d ' ' -f 1)
    ynh_app_setting_set $app password_hash $password_hash
fi
ynh_replace_string "__PASSWORDHASH__" "${password_hash}" "$bk_conf"

# Store the config file checksum into the app settings
ynh_store_file_checksum "$bk_conf"

bk_conf="${final_path}/Specific/config.system.php"

# Verify the checksum and backup the file if it's different
ynh_backup_if_checksum_is_different "$bk_conf"

cp ../conf/config.system.php "$bk_conf"

ynh_replace_string "__PATH__" "$path_url" "$bk_conf"
ynh_replace_string "__DBNAME__" "$db_name" "$bk_conf"
ynh_replace_string "__DBUSER__" "$db_name" "$bk_conf"
db_pwd=$(ynh_app_setting_get $app mysqlpwd)
ynh_replace_string "__DBPASS__" "$db_pwd" "$bk_conf"

deskey=$(ynh_app_setting_get $app deskey)
ynh_replace_string "__DESKEY__" "$deskey" "$bk_conf"

# Store the config file checksum into the app settings
ynh_store_file_checksum "$bk_conf"

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

# Set permissions
chown -R root: "$final_path"
chown $app "$final_path/Specific/"{config.php,config.system.php}
chmod 640 "$final_path/Specific/"{config.php,config.system.php}

#=================================================
# SETUP SSOWAT
#=================================================
ynh_print_info "Upgrading SSOwat configuration..."

# Allow public access on /
ynh_app_setting_set $app skipped_uris "/"
# But restrain on /admin
ynh_app_setting_set $app protected_uris "/admin/"

#=================================================
# RELOAD NGINX
#=================================================
ynh_print_info "Reloading nginx web server..."

systemctl reload nginx

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

ynh_print_info "Upgrade of $app completed"