#!/bin/bash

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

source _common.sh
source /usr/share/yunohost/helpers
# Overload the helper ynh_handle_getopts_args to have fixes from unstable.
# Needed for composer helpers
source _getopts_fix.sh

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

# 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

app=$YNH_APP_INSTANCE_NAME

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

# 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

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# CREATE A MYSQL DATABASE
#=================================================
ynh_print_info "Creating 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

# Setup a privileged user for phpmyadmin (to prevent using MySQL root user)
db_admin_user="${app}_root"
ynh_app_setting_set $app db_admin_user $db_admin_user
db_admin_pwd="$(ynh_string_random)"
ynh_app_setting_set $app db_admin_pwd $db_admin_pwd

if ! ynh_mysql_user_exists "$db_admin_user"
then
  ynh_mysql_create_user "$db_admin_user" "$db_admin_pwd"
  ynh_mysql_execute_as_root "GRANT ALL PRIVILEGES ON *.* TO '$db_admin_user'@'localhost' IDENTIFIED BY '$db_admin_pwd' WITH GRANT OPTION;
  FLUSH PRIVILEGES;" mysql
fi

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_print_info "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_print_info "Configuring nginx web server..."

# 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..."

# Create a dedicated php-fpm config
ynh_add_fpm_config

#=================================================
# SPECIFIC SETUP
#=================================================
# POPULATE THE DATABASE
#=================================================
ynh_print_info "Filling database..."

ynh_replace_string "__YNH_PMA_USER__" "$db_name" ../conf/create_db.sql
ynh_mysql_connect_as "$db_name" "$db_pwd" "$db_name" \
    < ../conf/create_db.sql
ynh_replace_string "phpmyadmin" "$db_name" $final_path/sql/create_tables.sql
ynh_mysql_connect_as "$db_name" "$db_pwd" "$db_name" \
    < $final_path/sql/create_tables.sql

#=================================================
# CONFIGURE PHPMYADMIN
#=================================================
ynh_print_info "Configuring phpmyadmin..."

ynh_replace_string "__YNH_PMA_ADMIN_USER__" "$db_admin_user" ../conf/config.inc.php
ynh_replace_string "__YNH_PMA_ADMIN_PASSWORD__" "$db_admin_pwd" ../conf/config.inc.php
ynh_replace_string "__YNH_PMA_USER__" "$db_name" ../conf/config.inc.php
ynh_replace_string "__YNH_PMA_PASSWORD__" "$db_pwd" ../conf/config.inc.php

cp ../conf/config.inc.php $final_path

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

#=================================================
# INSTALL DEPENDENCIES WITH COMPOSER
#=================================================
ynh_print_info "Installing dependencies with Composer..."

# Install composer
ynh_install_composer

# Install dependencies
# ynh_exec_warn_less ynh_composer_exec --commands="update --no-dev"
ynh_composer_exec --commands="update --no-dev"

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

# Set permissions to app files
chown -R root: $final_path
# config.inc.php contains sensitive data, restrict its access
chown root:$app $final_path/config.inc.php
chmod 640 $final_path/config.inc.php
# Setup phpMyAdmin temporary folder
mkdir -p $final_path/tmp
chown $app: $final_path/tmp

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

# Restrict access to admin only
yunohost app addaccess --users=$admin $app

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

systemctl reload nginx

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

ynh_print_info "Installation of $app completed"