#!/bin/bash

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

source _common.sh
source ynh_send_readme_to_admin__2
source /usr/share/yunohost/helpers

#=================================================
# MANAGE SCRIPT FAILURE
#=================================================

ynh_clean_setup () {
	ynh_clean_check_starting
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# RETRIEVE ARGUMENTS FROM THE MANIFEST
#=================================================

domain=$YNH_APP_ARG_DOMAIN
path_url="/"
admin=$YNH_APP_ARG_ADMIN
is_public=$YNH_APP_ARG_IS_PUBLIC
admin_email=$(ynh_user_get_info --username=$admin --key="mail")
admin_pass=$(ynh_string_random --length=24)

app=$YNH_APP_INSTANCE_NAME

# Define app's data directory
datadir="/home/yunohost.app/${app}/storage"

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================
ynh_script_progression --message="Validating installation parameters..."

final_path=/var/www/$app
test ! -e "$final_path" || ynh_die --message="This path already contains a folder"

# Register (book) web path
ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="Storing installation settings..."

ynh_app_setting_set --app=$app --key=domain --value=$domain
ynh_app_setting_set --app=$app --key=admin --value=$admin
ynh_app_setting_set --app=$app --key=datadir --value=$datadir

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_script_progression --message="Finding an available port..."

# Find an available port
port=$(ynh_find_port --port=9000)
ynh_app_setting_set --app=$app --key=port --value=$port

# PeerTube Live port
rtmp_port=1935
ynh_port_available --port=$rtmp_port || ynh_die "Port $rtmp_port is needs to be available for this app"
ynh_app_setting_set --app=$app --key=rtmp_port --value=$rtmp_port

# Open the port
ynh_script_progression --message="Configuring firewall..."
ynh_exec_warn_less yunohost firewall allow TCP $rtmp_port

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..."

# Install nodejs
ynh_install_nodejs --nodejs_version=$NODEJS_VERSION

# 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_script_progression --message="Configuring system user..."

# Create a system user
ynh_system_user_create --username=$app --home_dir="$final_path"

#=================================================
# CREATE A POSTGRESQL DATABASE
#=================================================
ynh_script_progression --message="Creating a PostgreSQL database..."

db_name="peertube_${app}"
db_user=$app
db_pwd=$(ynh_string_random --length=30)
ynh_app_setting_set --app=$app --key=db_name --value=$db_name
ynh_app_setting_set --app=$app --key=db_pwd --value=$db_pwd
ynh_psql_test_if_first_run
ynh_psql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd

ynh_psql_execute_as_root --sql="CREATE EXTENSION IF NOT EXISTS unaccent;" --database=$db_name
ynh_psql_execute_as_root --sql="CREATE EXTENSION IF NOT EXISTS pg_trgm;" --database=$db_name

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..."

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

chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app:www-data "$final_path"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring NGINX web server..."

# Create a dedicated NGINX config
ynh_add_nginx_config "datadir"

#=================================================
# SPECIFIC SETUP
#=================================================
# CREATE THE DATA DIRECTORY
#=================================================
ynh_script_progression --message="Creating the data directory..."

# Create app folders
mkdir -p "$datadir"

chmod 750 "$datadir"
chmod -R o-rwx "$datadir"
chown -R $app:www-data "$datadir"

#=================================================
# BUILD YARN DEPENDENCIES
#=================================================
ynh_script_progression --message="Building Yarn dependencies..."

pushd "$final_path"
	ynh_use_nodejs
	ynh_exec_warn_less sudo -u $app env $ynh_node_load_PATH yarn install --production --pure-lockfile 
popd

#=================================================
# ADD A CONFIGURATION
#=================================================
ynh_script_progression --message="Adding a config file..."

ynh_add_config --template="../conf/production.yaml" --destination="$final_path/config/production.yaml"

chmod 400 "$final_path/config/production.yaml"
chown $app:$app "$final_path/config/production.yaml"

ynh_add_config --template="../conf/local-production.json" --destination="$final_path/config/local-production.json"

chmod 600 "$final_path/config/local-production.json"
chown $app:$app "$final_path/config/local-production.json"

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..."

# Create a dedicated systemd config
ynh_add_systemd_config

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

# Start a systemd service
ynh_systemd_action --service_name=$app --action="start" --log_path="systemd" --line_match="HTTP server listening on localhost"

#=================================================
# INSTALL LDAP PLUGIN
#=================================================
ynh_script_progression --message="Installing LDAP plugin..."

pushd "$final_path"
	NODE_CONFIG_DIR="$final_path/config" NODE_ENV=production npm run plugin:install -- --npm-name peertube-plugin-auth-ldap
popd

#=================================================
# CHANGE PEERTUBE ADMIN PASSWORD
#=================================================
ynh_script_progression --message="Changing PeerTube admin password..."

pushd "$final_path"
	echo $admin_pass | NODE_CONFIG_DIR="$final_path/config" NODE_ENV=production npm run reset-password -- -u root
popd

#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Stopping a systemd service..."

# Start a systemd service
ynh_systemd_action --service_name=$app --action="stop" --log_path="systemd"

#=================================================
# GENERIC FINALIZATION
#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Configuring log rotation..."

# Use logrotate to manage application logfile(s)
ynh_use_logrotate --logfile="$datadir/logs/peertube.log"

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

yunohost service add $app --description="$app daemon for Peertube" --log="$datadir/logs/peertube.log" --needs_exposed_ports $rtmp_port

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

# Start a systemd service
ynh_systemd_action --service_name=$app --action="start" --log_path="systemd" --line_match="HTTP server listening on localhost"

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Configuring permissions..."

# Make app public if necessary
if [ $is_public -eq 1 ]
then
	# Everyone can access the app.
	# The "main" permission is automatically created before the install script.
	ynh_permission_update --permission="main" --add="visitors"
fi

ynh_permission_create --permission="api" --url="/api" --allowed="visitors" --auth_header="false" --show_tile="false" --protected="true"

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..."

ynh_systemd_action --service_name=nginx --action=reload

#=================================================
# SEND A README FOR THE ADMIN
#=================================================
ynh_script_progression --message="Sending a readme for the admin..."

ynh_send_readme_to_admin --app_message="../conf/msg_install" --recipients=$admin_email --type='install'

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

ynh_script_progression --message="Installation of $app completed"