#!/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=$YNH_APP_ARG_DOMAIN
path_url="/"
admin=$YNH_APP_ARG_ADMIN
email=$(sudo yunohost user info $admin | grep "mail:" | cut -d' ' -f2)
upload="256M"
database="1"

# 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

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

### If the app uses nginx as web server (written in HTML/PHP in most cases), the final path should be "/var/www/$app".
### If the app provides an internal web server (or uses another application server such as uwsgi), the final path should be "/opt/yunohost/$app"
final_path=/var/www/$app
test ! -e "$final_path" || ynh_die "This path already contains a folder"

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

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_print_info "Storing installation 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 email $email
ynh_app_setting_set $app upload $upload
ynh_app_setting_set $app database $database


#=================================================
# STANDARD MODIFICATIONS
#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_print_info "Installing dependencies..."

### `ynh_install_app_dependencies` allows you to add any "apt" dependencies to the package.
### Those deb packages will be installed as dependencies of this package.
### If you're not using this helper:
###		- Remove the section "REMOVE DEPENDENCIES" in the remove script
###		- Remove the variable "pkg_dependencies" in _common.sh
###		- As well as the section "REINSTALL DEPENDENCIES" in the restore script
###		- And the section "UPGRADE DEPENDENCIES" in the upgrade script

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# CREATE A MYSQL DATABASE
#=================================================
ynh_print_info "Creating a MySQL database..."

### Use these lines if you need a database for the application.
### `ynh_mysql_setup_db` will create a database, an associated user and a ramdom password.
### The password will be stored as 'mysqlpwd' into the app settings,
### and will be available as $db_pwd
### If you're not using these lines:
###		- Remove the section "BACKUP THE MYSQL DATABASE" in the backup script
###		- Remove also the section "REMOVE THE MYSQL DATABASE" in the remove script
###		- As well as the section "RESTORE THE MYSQL DATABASE" in the restore script

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

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

# 1 - Hubzilla
ynh_print_info "Setting up Hubzilla source files..."

### `ynh_setup_source` is used to install an app from a zip or tar.gz file,
### downloaded from an upstream source, like a git repository.
### `ynh_setup_source` use the file conf/app.src

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"

# 2 - Hubzilla Addons

# Make addon Directory and unpack the Hubzilla addons to this directory
ynh_print_info "Create addon directory inside Hubzilla root folder..."
sudo mkdir $final_path/addon
ynh_print_info "Setting up Hubzilla addons source files..."
ynh_setup_source "$final_path/addon" "app_addons"


# 3 - Some extra folders
ynh_print_info "Creating smarty3 folder for personal data..."
sudo mkdir -p "${final_path}/store/[data]/smarty3"
sudo chmod -R 777 $final_path/store

# Import database schema
ynh_print_info "Importing database..."
ynh_mysql_connect_as "$db_name" "$db_pwd" "$db_name" < $final_path/install/schema_mysql.sql

# Copy the template install/htconfig.sample.php to .htconfig.php
ynh_print_info "Moving .htconfig.php to root of Hubzilla ..."
sudo cp $final_path/install/htconfig.sample.php $final_path/.htconfig.php

# Create php.log inside Hubzilla for logs
ynh_print_info "Create php.log for the Hubzilla debuging..."
sudo touch "$final_path/php.log"

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

### `ynh_replace_string` is used to replace a string in a file.
### (It's compatible with sed regular expressions syntax)

ynh_print_info "Replace the .htconfig.php values...."
sudo sed -i "s/your.mysqlhost.com/localhost/g" $final_path/.htconfig.php
sudo sed -i "s/mysqlpassword/$db_pwd/g" $final_path/.htconfig.php
sudo sed -i "s/mysqlusername/$db_name/g" $final_path/.htconfig.php
sudo sed -i "s/mysqldatabasename/$db_name/g" $final_path/.htconfig.php
sudo sed -i "s/mysite.example/$domain/g" $final_path/.htconfig.php
sudo sed -i "s/if the auto install failed, put a unique random string here/$(ynh_string_random)$(ynh_string_random)$(ynh_string_random)/g" $final_path/.htconfig.php
sudo sed -i "s/\['admin_email'\] = '';/\['admin_email'\] = '$email';/g" $final_path/.htconfig.php
sudo sed -i "s@//error_reporting(E_ERROR | E_WARNING | E_PARSE );@error_reporting(E_ERROR | E_WARNING | E_PARSE );@g" $final_path/.htconfig.php
sudo sed -i "s@//ini_set('error_log','php.out');@ini_set('error_log','php.log');@g" $final_path/.htconfig.php
sudo sed -i "s@//ini_set('log_errors','1');@ini_set('log_errors','1');@g" $final_path/.htconfig.php
sudo sed -i "s@//ini_set('display_errors', '0');@ini_set('display_errors', '0');@g" $final_path/.htconfig.php

# addon ldap config
ynh_print_info "Push Ldap configuration to .htconfig.php..."
sudo su -c "cat ../conf/ldap_conf.php >> $final_path/.htconfig.php"


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

### `ynh_add_nginx_config` will use the file conf/nginx.conf

# Create a dedicated nginx config
ynh_add_nginx_config

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

# Create a system user
ynh_system_user_create $app

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_print_info "Configuring php-fpm..."

### `ynh_add_fpm_config` is used to set up a PHP config.
### You can remove it if your app doesn't use PHP.
### `ynh_add_fpm_config` will use the files conf/php-fpm.conf and conf/php-fpm.ini
### If you're not using these lines:
###		- You can remove these files in conf/.
###		- Remove the section "BACKUP THE PHP-FPM CONFIGURATION" in the backup script
###		- Remove also the section "REMOVE PHP-FPM CONFIGURATION" in the remove script
###		- As well as the section "RESTORE THE PHP-FPM CONFIGURATION" in the restore script
###		With the reload at the end of the script.
###		- And the section "PHP-FPM CONFIGURATION" in the upgrade script

# Create a dedicated php-fpm config
ynh_add_fpm_config

# Set right permissions for Hubzilla
ynh_print_info "Set right for Hubzilla..."
chown -R $app: $final_path

# Set up cron job
ynh_print_info "Setting up cron job..."
ynh_replace_string  "YNH_WWW_PATH" "$final_path" ../conf/poller-cron
ynh_replace_string "__USER__" "$app"  ../conf/poller-cron
sudo cp ../conf/poller-cron /etc/cron.d/$app 

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

### `ynh_store_file_checksum` is used to store the checksum of a file.
### That way, during the upgrade script, by using `ynh_backup_if_checksum_is_different`,
### you can make a backup of this file before modifying it again if the admin had modified it.

# Calculate and store the config file checksum into the app settings
ynh_store_file_checksum "$final_path/.htconfig.php"

#=================================================
# SETUP LOGROTATE
#=================================================
ynh_print_info "Configuring log rotation..."

### `ynh_use_logrotate` is used to configure a logrotate configuration for the logs of this app.
### Use this helper only if there is effectively a log file for this app.
### If you're not using this helper:
###		- Remove the section "BACKUP LOGROTATE" in the backup script
###		- Remove also the section "REMOVE LOGROTATE CONFIGURATION" in the remove script
###		- As well as the section "RESTORE THE LOGROTATE CONFIGURATION" in the restore script
###		- And the section "SETUP LOGROTATE" in the upgrade script

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

#=================================================
# SETUP FAIL2BAN
#=================================================
ynh_print_info "Add Fail2Ban..."
ynh_add_fail2ban_config "$final_path/php.log" "^.*auth\.php.*failed login attempt.*from IP <HOST>.*$" 5

#=================================================
# SETUP SSOWAT
#=================================================
# As Hubzilla is social network and have its own permission there is no need to keep Hubzilla behind SSO
ynh_print_info "Configuring SSOwat..."
ynh_app_setting_set $app skipped_uris "/"

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

systemctl reload nginx

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

ynh_print_info "Installation of $app completed"