#!/bin/bash

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

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

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

# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

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

# This is a multi-instance app, meaning it can be installed several times independently
# The id of the app as stated in the manifest is available as $YNH_APP_ID
# The instance number is available as $YNH_APP_INSTANCE_NUMBER (equals "1", "2", ...)
# The app instance name is available as $YNH_APP_INSTANCE_NAME
#    - the first time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample
#    - the second time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample__2
#    - ynhexample__{N} for the subsequent installations, with N=3,4, ...
# The app instance name is probably what you are interested the most, since this is
# guaranteed to be unique. This is a good unique identifier to define installation path,
# db names, ...
app=$YNH_APP_INSTANCE_NAME

# Retrieve arguments

domain=$YNH_APP_ARG_DOMAIN
path_url=$YNH_APP_ARG_PATH
admin=$YNH_APP_ARG_ADMIN
title=$YNH_APP_ARG_TITLE
is_public=$YNH_APP_ARG_IS_PUBLIC
language=$YNH_APP_ARG_LANGUAGE
flarum_version="v0.1.0-beta.7"
ssowat_ext_ver="*@dev"
bazaar_extension=$YNH_APP_ARG_BAZAAR_EXTENSION

#===================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#===================================================

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

#===================================================
# STORE SETTINGS FROM MANIFEST
#===================================================

# Save app settings
ynh_app_setting_set $app domain $domain
ynh_app_setting_set $app path $path_url
ynh_app_setting_set $app admin $admin
ynh_app_setting_set $app is_public $is_public
ynh_app_setting_set $app language $language
ynh_app_setting_set $app final_path $final_path
ynh_app_setting_set $app flarum_version $flarum_version

#===================================================
# CREATE DEDICATED USER
#===================================================

ynh_system_user_create $app $final_path
sudo usermod -a -G www-data $app
# Create working directory
sudo mkdir -p "$final_path/.composer"
sudo chown -R $app:www-data $final_path
sudo chmod -R 0775 $final_path

#=================================================
# COMPOSER INSTALLATION
#=================================================

init_composer $app $final_path

#=================================================
# FLARUM INSTALLATION
#=================================================

# Prepare Flarum temp directory
tmp=/tmp/$app
sudo mkdir -p $tmp
sudo chown -R $app:www-data $tmp
sudo chmod -R 0775 $tmp

# Install Flarum
exec_composer $app $final_path "create-project flarum/flarum $tmp $flarum_version --stability=beta --ansi"

# Copy Flarum to working directory and clean temp directory
sudo cp -Rf $tmp/* $final_path
sudo chown -R $app:www-data $final_path
sudo chmod -R 0775 $final_path
ynh_secure_remove $tmp

#=================================================
# CREATE A MYSQL DATABASE
#=================================================

db_name=$(ynh_sanitize_dbid $app)
ynh_app_setting_set $app db_name $db_name
ynh_mysql_setup_db $db_name $db_name
ynh_app_setting_set "$app" db_pwd "$db_pwd"

#=================================================
# NGINX CONFIGURATION
#=================================================

# Bug in Nginx with locations and aliases (see http://stackoverflow.com/a/35102259 )
if [ $path_url = "/" ]; then
  sed -i "s@__LOCATION_HACK__@@g" ../conf/nginx.conf
  sed -i "s@__PATH_HACK__@/@g" ../conf/nginx.conf
else
  sed -i "s@__LOCATION_HACK__@$path_url@g" ../conf/nginx.conf
  sed -i "s@__PATH_HACK__@$path_url$path_url@g" ../conf/nginx.conf
fi
# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# PHP-FPM CONFIGURATION
#=================================================

# Create a dedicated php-fpm config
ynh_add_fpm_config

#=================================================
# SETUP LOGROTATE
#=================================================

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

#=================================================
# SETUP SSOWAT
#=================================================

if [ $is_public -eq 0 ]
then	# Remove the public access
  ynh_app_setting_delete $app skipped_uris
fi
# 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
#=================================================

systemctl reload nginx

#=================================================
# FLARUM POST-INSTALL
#=================================================

if [[ -n $admin && -n $title ]]; then
  # If admin user and title were specified, start post-installation
  # Copy the configuration.yml to working directory
  finalflarumconf="$final_path/configuration.yml"
  cp ../conf/configuration.yml $finalflarumconf
  # Generate admin password and retrieve their email address
  admin_pwd=$(ynh_string_random 8)
  admin_mail=$(ynh_user_get_info $admin mail)
  # Populate configuration.yml
  sed -i "s@__DOMAIN__@$domain@g" $finalflarumconf
  sed -i "s@/__PATH__@$path_url@g" $finalflarumconf
  sed -i "s@__USER__@$app@g" $finalflarumconf
  sed -i "s@__DB_PWD__@$db_pwd@g" $finalflarumconf
  sed -i "s@__ADMIN__@$admin@g" $finalflarumconf
  sed -i "s@__ADMIN_PWD__@$admin_pwd@g" $finalflarumconf
  sed -i "s%__ADMIN_EML__%$admin_mail%g" $finalflarumconf
  sed -i "s@__FORUM_TITLE__@$title@g" $finalflarumconf
  # Execute post-installation
  cd $final_path
  exec_as $app "php -d memory_limit=-1 flarum install -f configuration.yml"
  # Delete configuration.yml as it sensitive data
  ynh_secure_remove $finalflarumconf

  # Email setup
  sql_command="REPLACE INTO \`settings\` (\`key\`, \`value\`) VALUES
('mail_driver', 'mail'),
('mail_encryption', 'ssl'),
('mail_from', '$app@$domain'),
('mail_host', 'localhost'),
('mail_port', '587');"
  ynh_mysql_execute_as_root "$sql_command" $db_name

  # Install and active the SSOwat auth extension
  install_and_activate_extension $app $final_path $db_name "tituspijean/flarum-ext-auth-ssowat:$ssowat_ext_ver" "tituspijean-auth-ssowat"
  # Configure SSOwat auth extension
  ssowatdomain=$(</etc/yunohost/current_host)
  sql_command="INSERT INTO \`settings\` (\`key\`, \`value\`) VALUES ('tituspijean-auth-ssowat.domain', '$ssowatdomain'), ('tituspijean-auth-ssowat.onlyUse', '0');"
  ynh_mysql_execute_as_root "$sql_command" $db_name

  # Install, activate and set language extensions
  case $language in
    fr)
      install_and_activate_extension $app $final_path $db_name "milescellar/flarum-ext-french" "milescellar-french"
      sql_command="UPDATE \`settings\` SET \`value\` = 'fr' WHERE \`settings\`.\`key\` = 'default_locale'"
      ynh_mysql_execute_as_root "$sql_command" $db_name
      ;;
    de)
      install_and_activate_extension $app $final_path $db_name "cbmainz/flarum-de" "cbmainz-de"
      sql_command="UPDATE \`settings\` SET \`value\` = 'de' WHERE \`settings\`.\`key\` = 'default_locale'"
      ynh_mysql_execute_as_root "$sql_command" $db_name
      ;;
    esac
    
  if [[ $bazaar_extension ]]; then
    install_and_activate_extension $app $final_path $db_name "flagrow/bazaar" "flagrow-bazaar"
  fi

  # Send login credentials to admin
  app_message="User : $admin, password : $admin_pwd
  Change your password!
  Your forum is accessible at https://$domain$path_url"
  >&2 echo $app_message
  ynh_send_readme_to_admin "$app_message" "$admin"
else
  # If admin user and title were not specified, ask admin to perform manual post-installation
  app_message="Post-installation required, visit your Flarum instance."
  >&2 echo $app_message
  ynh_send_readme_to_admin "$app_message" "$admin"
fi