#!/usr/bin/env 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=$(ynh_app_setting_get --app="$app" --key=domain)
path_url=$(ynh_app_setting_get --app="$app" --key=path)
is_public=$(ynh_app_setting_get --app="$app" --key=is_public)
final_path=$(ynh_app_setting_get --app="$app" --key=final_path)
port=$(ynh_app_setting_get --app="$app" --key=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

#=================================================
# 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
# N.B. : this is for app installations before YunoHost 2.7
# where this value might be something like /foo/ or foo/
# instead of /foo ....
# If nobody installed your app before 2.7, then you may
# safely remove this line
path_url=$(ynh_normalize_url_path --path_url="$path_url")

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

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

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading dependencies..." --time --weight=3

# Install nodejs
ynh_install_nodejs --nodejs_version="$YNH_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"

#=================================================
# 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"
fi

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

# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# 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="$app" --home_dir="$final_path"

#=================================================
# SPECIFIC UPGRADE
#=================================================
# BUILD YARN DEPENDENCIES
#=================================================
ynh_script_progression --message="Rebuilding yarn dependencies..." --weight=2

chown -R "$app":"$app" "$final_path"

pushd "$final_path" || return 1
    ynh_use_nodejs ; set "${ynh_node_load_PATH:?}"
    sudo -u "$app" env "$ynh_node_load_PATH" yarn global add wetty
    yarn_bin_dir="$(sudo -u "$app" env "$ynh_node_load_PATH" yarn global bin)"
popd || return 1

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

# Create a dedicated systemd config
test -n "${domain}${port}${path_url}${ynh_node_load_PATH}${yarn_bin_dir}"
ynh_add_systemd_config --others_var="domain port path_url ynh_node_load_PATH yarn_bin_dir"

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

# Set permissions to app files
chown -R root: "$final_path"

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

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

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

yunohost service add "$app" --description "Wetty Web Terminal service" --log "/var/log/$app/$app.log"

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

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

#=================================================
# UPGRADE FAIL2BAN
#=================================================
# ynh_script_progression --message="Reconfiguring fail2ban..." --weight=1

# Create a dedicated fail2ban config
# ynh_add_fail2ban_config --logpath="/var/log/nginx/${domain}-error.log" --failregex="Regex to match into the log for a failed login"

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

# Make app public if necessary
if [ "$is_public" -eq 1 ]; then
    ynh_permission_update --permission "main" --add "visitors"
else
    ynh_permission_update --permission "main" --remove "visitors"
fi

#=================================================
# 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 $app completed" --last