#!/bin/bash

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

source _common.sh
source ynh_detect_arch__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=$YNH_APP_ARG_DOMAIN
path_url=$YNH_APP_ARG_PATH
is_public=$YNH_APP_ARG_IS_PUBLIC

app=$YNH_APP_INSTANCE_NAME

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

architecture=$(ynh_detect_arch)
# Check machine architecture (in particular, we don't support ARM and 32bit machines)
if [ $architecture == "x86_64" ] || [ $architecture == "arm" ]
then
	ynh_die --message="Sorry, but this app can only be installed on a x86, 64 bits machine :("
fi

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_print_info --message="Storing installation settings..."

ynh_app_setting_set --app=$app --key=domain --value=$domain
ynh_app_setting_set --app=$app --key=path --value=$path_url
ynh_app_setting_set --app=$app --key=is_public --value=$is_public

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_print_info --message="Configuring firewall..."

# Find a free port
port=$(ynh_find_port --port=8095)
ynh_app_setting_set --app=$app --key=port --value=$port

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

ynh_install_nodejs --nodejs_version="8.16.1"
ynh_use_nodejs

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# START MONGODB
#=================================================
ynh_print_info --message="Starting mongodb ..."

# Start mongodb
systemctl enable mongodb
systemctl start mongodb

# Registering db name
db_name=$(ynh_sanitize_dbid --db_name=$app)
ynh_app_setting_set --app=$app --key=db_name --value=$db_name

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_print_info --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="$final_path" --source_id="$architecture"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_print_info --message="Configuring nginx web server..."

# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_print_info --message="Configuring system user..."

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

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

# Create a dedicated systemd config
ynh_replace_string --match_string="__NODEJS_PATH__" --replace_string="$nodejs_path" --target_file="../conf/systemd.service"
ynh_add_systemd_config

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

config_file="$final_path/.env"
cp "../conf/.env" $config_file

ynh_replace_string --match_string="__NODEJS_PATH__" --replace_string="$nodejs_path" --target_file="$config_file"
ynh_replace_string --match_string="__DB_NAME__" --replace_string="$db_name" --target_file="$config_file"
ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain" --target_file="$config_file"
ynh_replace_string --match_string="__DOMAIN_URI__" --replace_string="$domain$path_url" --target_file="$config_file"
ynh_replace_string --match_string="__PORT__" --replace_string="$port" --target_file="$config_file"

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

# Calculate and store the config file checksum into the app settings
ynh_store_file_checksum --file="$config_file"

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================
ynh_print_info --message="Configuring file permissions ..."

# Set strong right permissions to app files
chown -R $app: "$final_path"
chmod -R 640 "$final_path"
find "$final_path" -type d -print0 | xargs -0 chmod 750

#=================================================
# ADVERTISE SERVICE IN ADMIN PANEL
#=================================================

yunohost service add mongodb --log "/var/log/mongodb/mongodb.log"
yunohost service add $app

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_print_info --message="Starting $app service..."

# Start a systemd service
ynh_systemd_action --service_name=$app --action="start" --log_path="systemd" --line_match="Meteor APM: completed instrumenting the app"
sleep 30

#=================================================
# SETUP SSOWAT
#=================================================
ynh_print_info --message="Configuring SSOwat..."

# 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

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

ynh_systemd_action --service_name=nginx --action=reload

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

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