#!/bin/bash

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

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

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

ynh_clean_setup () {
	ynh_clean_check_starting
	
	true
}
# 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=$YNH_APP_ARG_IS_PUBLIC
theme=$YNH_APP_ARG_THEME
password=$YNH_APP_ARG_PASSWORD

app=$YNH_APP_INSTANCE_NAME

#=================================================
# 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 "This path already contains a folder"

# Normalize the url path syntax
path_url=$(ynh_normalize_url_path $path_url)

# Check web path availability
ynh_webpath_available $domain $path_url
# Register (book) web path
ynh_webpath_register $app $domain $path_url

#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_script_progression --message="Configuring firewall..."

# Find a free port
port=$(ynh_find_port 8095)
# Open this port
yunohost firewall allow --no-upnp TCP $port 2>&1

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

ynh_app_setting_set $app domain $domain
ynh_app_setting_set $app is_public $is_public
ynh_app_setting_set $app port $port
ynh_app_setting_set $app path $path_url
ynh_app_setting_set $app theme $theme
hashed_password=$(echo -n $password | sha256sum | cut -d' ' -f1)
ynh_app_setting_set $app hashed_password $hashed_password

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

ynh_install_app_dependencies build-essential libssl-dev zlib1g-dev libpng-dev libpq-dev memcached postgresql cpanminus
# Install Carton
echo yes | cpanm Carton

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

# Create postgresql database
ynh_psql_test_if_first_run
db_name=$(ynh_sanitize_dbid "$app")
db_user=$db_name
# Initialize database and store postgres password for upgrade
ynh_psql_setup_db "$db_name" "$db_user"
ynh_app_setting_set "$app" db_name "$db_name"
db_pwd=$(ynh_app_setting_get $app psqlpwd) # Password created in ynh_psql_setup_db function

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

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

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

# Create a dedicated nginx config
ynh_add_nginx_config

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

# Create a system user
ynh_system_user_create $app

#=================================================
## Copy and fix variable into lstu config
#=================================================
ynh_script_progression --message="Configuring lstu..."

cp ../conf/lstu.conf.template "${final_path}/lstu.conf"
ynh_replace_string "__DOMAIN__" "$domain" "${final_path}/lstu.conf"
ynh_replace_string "__PATH__" "$path_url" "${final_path}/lstu.conf"
ynh_replace_string "__PORT__" "$port" "${final_path}/lstu.conf"
ynh_replace_string "__DB_NAME__" "$db_name"  "${final_path}/lstu.conf"
ynh_replace_string "__DB_USER__" "$db_user"  "${final_path}/lstu.conf"
ynh_replace_string "__DB_PWD__" "$db_pwd" "${final_path}/lstu.conf"
ynh_replace_string "__SELECTED_THEME__" "$theme" "${final_path}/lstu.conf"
ynh_replace_string "__PASSWORD_HASHED__" "$hashed_password" "${final_path}/lstu.conf"

secret=$(ynh_string_random 24)
ynh_app_setting_set $app secret $secret
ynh_replace_string "__SECRET__" "$secret" "${final_path}/lstu.conf"
if [ $is_public -eq 0 ];
then
	ynh_replace_string "__IS_PUBLIC__" "" "${final_path}/lstu.conf"
else
	ynh_replace_string "__IS_PUBLIC__" "#" "${final_path}/lstu.conf"
fi
ynh_store_file_checksum "${final_path}/lstu.conf"

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

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# Install lstu's dependencies via carton
#=================================================
ynh_script_progression --message="Installing lstu..."

pushd $final_path
carton install --deployment --without=sqlite --without=mysql
popd

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

# Use logrotate to manage application logfile(s)
ynh_use_logrotate

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

yunohost service add $app --log "/var/log/$app.log" --log "/var/www/$app/log/production.log"

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

ynh_app_setting_set $app unprotected_uris "/"
if [ $is_public -eq 0 ]
then
	# If the app is private, only the shortened URLs are publics.
	if [ "$path_url" == "/" ]; then
	    # If the path is /, clear it to prevent any error with the regex.
	    path_url=""
	fi
	# Modify the domain to be used in a regex
	domain_regex=$(echo "$domain" | sed 's@-@.@g')
	ynh_app_setting_set $app protected_regex "$domain_regex$path_url/login$","$domain_regex$path_url/logout$","$domain_regex$path_url/api$","$domain_regex$path_url/extensions$","$domain_regex$path_url/stats$","$domain_regex$path_url/d/.*$","$domain_regex$path_url/a$","$domain_regex$path_url/$"
fi

#=================================================
# Configure owner
#=================================================

chown -R www-data $final_path

#=================================================
# Start lstu
#=================================================

systemctl enable $app.service
ynh_systemd_action -n $app -a start -l "Server available at" -p "systemd"

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

# Reload Nginx
systemctl reload nginx
yunohost app ssowatconf

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

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