#!/bin/bash

#=================================================
# GENERIC STARTING
#=================================================
# 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_url)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
is_public=$(ynh_app_setting_get --app=$app --key=is_public)
admin=$(ynh_app_setting_get --app=$app --key=admin)
admin_mail=$(ynh_user_get_info '$admin' 'mail')
port=$(ynh_app_setting_get --app=$app --key=port)
porti=$(ynh_app_setting_get --app=$app --key=porti)

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

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..." --weight=2

# 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

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up CryptPad 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
#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Stopping a systemd service..." --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..." --weight=1

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

	pushd $final_path
		bower update
	popd
fi

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

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# INSTALL NODEJS
#=================================================
ynh_script_progression --message="Upgrading dependencies..." --weight=6

# Install Nodejs
ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version

# Install Yarn
ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"

#=================================================
# 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

#=================================================
# CONFIGURE CONFIG.JS	
#=================================================

ynh_backup_if_checksum_is_different "$final_path/config/config.js"

# Copy default configuration file
mv "../conf/config.js" "$final_path/config/config.js"

ynh_replace_string --match_string="__PORT__"       --replace_string="$port"        --target_file="$final_path/config/config.js"
ynh_replace_string --match_string="__PORTI__"      --replace_string="$porti"       --target_file="$final_path/config/config.js"
ynh_replace_string --match_string="__ADMIN_MAIL__" --replace_string="$admin_mail" --target_file="$final_path/config/config.js"

# Store file checksum to detected user modifications on upgrade
ynh_store_file_checksum "$final_path/config/config.js"

# #=================================================
# # INSTALL CRYPTPAD
# #=================================================
# ynh_script_progression --message="Building CryptPad... (this will take some time and resources!)" --weight=60

# pushd "$final_path" || ynh_die
# 	ynh_use_nodejs
# 	ynh_exec_warn_less yarn install  --allow-root
# 	yarn global add bower
# 	bower install --allow-root
# popd || ynh_die

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Upgrading systemd configuration..." --weight=1

ynh_replace_string --match_string="__APP__"       --replace_string="$app"        --target_file="../conf/systemd.service"
ynh_replace_string --match_string="__FINALPATH__" --replace_string="$final_path" --target_file="../conf/systemd.service"
ynh_replace_string --match_string="__ENV_PATH__"  --replace_string="$PATH"       --target_file="../conf/systemd.service"
ynh_replace_string --match_string="__YNH_NPM__"   --replace_string="$ynh_npm"    --target_file="../conf/systemd.service"

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================
ynh_script_progression --message="Upgrading systemd configuration..." --weight=1

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

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..." --weight=1

yunohost service add $app --description="Zero Knowledge realtime collaborative editor" --log="/var/log/$app/$app.log"

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

ynh_systemd_action --service_name=$app --action=start --log_path="systemd" --line_match="server available"

#=================================================
# 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 CryptPad completed" --last