#!/bin/bash

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

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

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

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get $app domain)
path_url=$(ynh_app_setting_get $app path)
is_public=$(ynh_app_setting_get $app is_public)
final_path=$(ynh_app_setting_get $app final_path)
config_path=$(ynh_app_setting_get $app config_path)
port=$(ynh_app_setting_get $app port)

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

### This helper will compare the version of the currently installed app and the version of the upstream package.
### $upgrade_type can have 2 different values
### - UPGRADE_APP if the upstream app version has changed
### - UPGRADE_PACKAGE if only the YunoHost package has changed
### ynh_check_app_version_changed will stop the upgrade if the app is up to date.
### UPGRADE_APP should be used to upgrade the core app only if there's an upgrade to do.
upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..." --time --weight=1

# 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 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 config_path doesn't exist, create it
if [ -z "$config_path" ]; then
	config_path=/home/yunohost.app/$app
	ynh_app_setting_set --app=$app --key=config_path --value=$config_path
fi


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

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

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

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Stopping a systemd service..." --time --weight=1

ynh_systemd_action --service_name=$app --action="stop" --log_path="/var/log/$app/$app.log"

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

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

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

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

ynh_install_nodejs $nodejs_version

#=================================================
# UPGRADE THE LOUNGE
#=================================================

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
ynh_use_nodejs
pushd $final_path
npm install --unsafe-perm

# Install webpack
npm upgrade webpack
npm upgrade webpack-cli
npm upgrade copy-webpack-plugin

# Build The Lounge
NODE_ENV=production npm run build

popd
fi

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

# Create a dedicated nginx config
ynh_add_nginx_config

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

# Create a system user
ynh_system_user_create --username=$app

#=================================================
# SETUP SYSTEMD
#=================================================

# Create a dedicated systemd config
ynh_use_nodejs
ynh_replace_string "__NODEJS__" "$nodejs_version" "../conf/systemd.service"
ynh_replace_string "__ENV_PATH__" "$PATH" "../conf/systemd.service"
ynh_replace_string "__NODE__" "$nodejs_path" "../conf/systemd.service"
ynh_add_systemd_config

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

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

#=================================================
# SPECIFIC UPGRADE
#=================================================
# ...
#=================================================

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

### Verify the checksum of a file, stored by `ynh_store_file_checksum` in the install script.
### And create a backup of this file if the checksum is different. So the file will be backed up if the admin had modified it.
ynh_backup_if_checksum_is_different --file="$config_path/config.js"
# Recalculate and store the checksum of the file for the next upgrade.
ynh_store_file_checksum --file="$config_path/config.js"

cp -a ../conf/config.js $config_path

#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Upgrading logrotate configuration..." --time --weight=1

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

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

# Set right permissions for curl installation
chown -R $app: $final_path
chown -R $app: $config_path

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Upgrading SSOwat configuration..." --time --weight=1

# Make app public if necessary
if [ $is_public -eq 1 ]
then
	# unprotected_uris allows SSO credentials to be passed anyway
	ynh_app_setting_set --app=$app --key=unprotected_uris --value="/"
fi

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --time --weight=1

ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading nginx web server..." --time --weight=1

ynh_systemd_action --service_name=nginx --action=reload

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

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