#!/bin/bash

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

source _common.sh
source ynh_add_secure_repos__3
source ynh_systemd_action
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 $app path)
is_public=$(ynh_app_setting_get "$app" is_public)
admin_email=$(ynh_app_setting_get "$app" admin_email)
final_path=$(ynh_app_setting_get "$app" final_path)
port=$(ynh_app_setting_get "$app" port)
db_name=$(ynh_app_setting_get "$app" psql_db)
db_pwd=$(ynh_app_setting_get "$app" psqlpwd)

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

# Fix is_public as a boolean value
if [ "$is_public" = "Yes" ]; then
	ynh_app_setting_set "$app" is_public 1
	is_public=1
elif [ "$is_public" = "No" ]; then
	ynh_app_setting_set "$app" is_public 0
	is_public=0
fi

# Close a port
if yunohost firewall list | grep -q "\- $port$"
then
	ynh_print_info "Closing port $port"
	ynh_exec_warn_less yunohost firewall disallow TCP $port
fi

# Remove repository
ynh_secure_remove /etc/apt/sources.list.d/jessie-backports.list
ynh_secure_remove /etc/apt/sources.list.d/yarn.list

#=================================================
# 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_clean_check_starting
	ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# STOP PEERTUBE FOR UPGRADE
#=================================================
ynh_print_info "Stop $app service..."

ynh_systemd_action --service_name="$app" --action="stop"

#===================================================
# Add PostgreSQL extension for v1.0.0-beta.10.pre.1
#===================================================

ynh_psql_execute_as_root "\connect $db_name 
CREATE EXTENSION IF NOT EXISTS unaccent;CREATE EXTENSION IF NOT EXISTS pg_trgm;"

#=================================================
# REMOVE APP MAIN DIR
#=================================================

# Create a temporary directory
tmpdir="$(mktemp -d)"
# Backup the config file in the temp dir
cp -a "$final_path/config/local-production.json" "$tmpdir/local-production.json"
# Remove the app directory securely
ynh_secure_remove "$final_path"

# Define app's data directory
datadir="/home/yunohost.app/${app}/storage"
# Create app folders
mkdir -p "$datadir"

#=================================================
# 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"

#=================================================
# MODIFY A CONFIG FILE
#=================================================

cp ../conf/production.yaml "$final_path/config/production.yaml"
ynh_replace_string "__domain__"  "$domain"      "$final_path/config/production.yaml"
ynh_replace_string "__db_name__" "$app"         "$final_path/config/production.yaml"
ynh_replace_string "__app__"     "$app"         "$final_path/config/production.yaml"
ynh_replace_string "__db_pwd__"  "$db_pwd"      "$final_path/config/production.yaml"
ynh_replace_string "__email__"   "$admin_email" "$final_path/config/production.yaml"
ynh_replace_string "__PORT__"    "$port"        "$final_path/config/production.yaml"

#Copy the admin saved settings from tmp directory to final path
cp -a  "$tmpdir/local-production.json" "$final_path/config/local-production.json"

# Remove the tmp directory securely
ynh_secure_remove "$tmpdir"

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

# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_print_info "Upgrading dependencies..."

# Install nodejs
ynh_install_nodejs 8

# Install dependencies
ynh_install_app_dependencies $pkg_dependencies

# Install ffmpeg from backports for Debian Jessie and from main for others
if [ "$(lsb_release --codename --short)" == "jessie" ]; then
	ynh_install_extra_app_dependencies --repo="deb http://httpredir.debian.org/debian jessie-backports main" --package="ffmpeg"
else
	ynh_add_app_dependencies --package="ffmpeg"
fi

# 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_print_info "Making sure dedicated system user exists..."

# Create a system user
ynh_system_user_create "$app"

#=================================================
# SPECIFIC UPGRADE
#=================================================
# BUILD YARN DEPENDENCIES
#=================================================

pushd "$final_path"
	yarn install --production --pure-lockfile 
popd

ynh_backup_if_checksum_is_different "$final_path/config/production.yaml"
# Recalculate and store the checksum of the file for the next upgrade.
ynh_store_file_checksum "$final_path/config/production.yaml"

#=================================================
# SETUP LOGROTATE
#=================================================
ynh_print_info "Upgrading logrotate configuration..."

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

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_print_info "Upgrading systemd configuration..."

ynh_replace_string "__ENV_PATH__" "$PATH" "../conf/systemd.service"
# Create a dedicated systemd config
ynh_add_systemd_config

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

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

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

# 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" unprotected_uris "/"
fi

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

systemctl reload nginx

#=================================================
# START SERVICE
#=================================================
ynh_print_info "Start $app service..."

ynh_systemd_action --service_name="$app" --action="start" --log_path="systemd" --line_match="Server listening on localhost"

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

ynh_print_info "Upgrade of $app completed"