#!/bin/bash

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

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

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

ynh_clean_setup () {
	### Remove this function if there's nothing to clean before calling the remove script.
	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
admin=$YNH_APP_ARG_ADMIN
password=$YNH_APP_ARG_PASSWORD
title=$YNH_APP_ARG_TITLE
is_public=$YNH_APP_ARG_IS_PUBLIC

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

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

ynh_install_app_dependencies $pkg_dependencies

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

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

# Bug in Nginx with locations and aliases (see http://stackoverflow.com/a/35102259 )
if [ $path_url = "/" ]; then
  ynh_replace_string "__PATH_HACK__" "" "../conf/nginx.conf"
else
  ynh_replace_string "__PATH_HACK__" "$path_url/$path_url" "../conf/nginx.conf"
fi

# 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 --username=$app

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring PHP-FPM..."

# Create a dedicated PHP-FPM config
ynh_add_fpm_config --usage=low --footprint=low --package="$extra_php_dependencies"

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

# Use logrotate to manage application logfile(s)
touch "$final_path/data/log.txt"
ynh_use_logrotate "$final_path/data/log.txt"

#=================================================
# MODIFY A CONFIG FILE
#=================================================
ynh_script_progression --message="Configuring Shaarli..."

# Get the timezone
timezone=$(cat /etc/timezone)

# Generate the salt
salt=$(php${YNH_PHP_VERSION} -r 'echo sha1(uniqid("", true) ."_". mt_rand());')

# Generate the hash with the password
hash=$(php${YNH_PHP_VERSION} -r "echo sha1('${password}'.'${admin}'.'${salt}');")

# Generate the API secret
secret=$(php${YNH_PHP_VERSION} -r "echo str_shuffle(substr(hash_hmac('sha512', uniqid('${salt}'), '${admin}'), 10, 12));")

# Set default_private_links. By default, make them public if the app is public.
if [ $is_public -eq 1 ]
then
        default_private_links=false
else
        default_private_links=true
fi

# Installing the config file and replace the placeholders
ynh_add_config --template="../conf/config.json.php" --destination="$final_path/data/config.json.php"

#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================
# set proper permissions
ynh_script_progression --message="Set permissions..."

find $final_path -type f | xargs chmod 644
find $final_path -type d | xargs chmod 755

# Set right permissions for curl install
ynh_script_progression --message="Set rights..."
chown -R $app: $final_path

#=================================================
# SETUP FAIL2BAN
#=================================================
ynh_script_progression --message="Configuring Fail2Ban..."

# Create a dedicated Fail2Ban config

ynh_add_fail2ban_config --logpath="$final_path/data/log.txt" --failregex="\s-\s<HOST>\s-\sLogin failed for user.*$"

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

# 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

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

ynh_systemd_action --service_name=nginx --action=reload

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

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