<?php

namespace AdScale\ServiceApi;

use AdScale\Handlers\Update as UpdateHandler;
use AdScale\Helpers\Helper;

defined( 'ABSPATH' ) || exit; // Exit if accessed directly


class Update extends ServiceApiBase {
	
	protected static $allowedActions = [
		'modify',
		'create_api_credentials',
		'enable_api',
		'disable_api',
		'delete_changes',
	];
	
	
	public static function initContent() {
		global $wp;
		
		if ( isset( $_GET['adscaleUpdate'] ) ) {
			$wp->query_vars['adscaleUpdate'] = sanitize_key( wp_unslash( $_GET['adscaleUpdate'] ) );
		}
		
		//  make sure endpoint request
		if ( ! isset( $wp->query_vars['adscaleUpdate'] ) ) {
			return;
		}
		
		
		try {
			ob_start();
			
			Helper::nocache_headers();
			
			// Check Request (Guards)
			self::checkRequest();
			
			ob_end_clean();
			
			// Handle Request
			self::handleRequest();
			
			// Default error
			Helper::send_response_formatted_error( self::makeErrorBody() );
		} catch ( ServiceApiException $ex ) {
			Helper::send_response_formatted_error(
				self::makeErrorBody( $ex->getApiErrorCode(), $ex->getMessage(), $ex->getApiErrorDetails() )
			);
		} catch ( \Exception $ex ) {
			Helper::send_response_formatted_error( self::makeErrorBody( $ex->getCode(), $ex->getMessage() ) );
		}
	}
	
	
	public static function checkRequest() {
		parent::checkRequest();
		self::initParams();
		
		// Missing Action guard
		if ( ! self::checkIfRequestParamExists( 'action' ) ) {
			throw new ServiceApiException( 'Missing argument', 'M001', 'action' );
		}
		
		$action = self::$requestParams['action'];
		
		// Action is not a string guard
		if ( ! is_string( $action ) ) {
			throw new ServiceApiException( 'Invalid argument value', 'I001', 'action' );
		}
		
		// Unknown Action guard
		if ( ! in_array( $action, self::$allowedActions, true ) ) {
			throw new ServiceApiException( 'Invalid argument value', 'I001', 'action' );
		}
		
		if ( 'modify' === $action ) {
			// Missing Property guard
			if ( ! self::checkIfRequestParamExists( 'property' ) ) {
				throw new ServiceApiException( 'Missing argument', 'M001', 'property' );
			}
			
			$property = self::$requestParams['property'];
			
			// Empty Property guard
			if ( ! is_string( $property ) || ! $property ) {
				throw new ServiceApiException( 'Invalid argument value', 'I001', 'property' );
			}
			
			// Missing Value guard
			if ( ! self::checkIfRequestParamExists( 'value' ) ) {
				throw new ServiceApiException( 'Missing argument', 'M001', 'value' );
			}
		}
		
		if ( 'delete_changes' === $action ) {
			// Missing max_id guard
			if ( ! self::checkIfRequestParamExists( 'max_id' ) ) {
				throw new ServiceApiException( 'Missing argument', 'M001', 'max_id' );
			}
			
			$max_id = self::$requestParams['max_id'];
			
			// invalid max_id guard
			if ( ! Helper::check_id_is_valid( $max_id ) ) {
				throw new ServiceApiException( 'Invalid argument value', 'I001', 'max_id' );
			}
		}
	}

	
	public static function initParams() {
		self::$requestParams['action']   = Helper::get_post_body_data_value( 'action','sanitize_text_field' );
		self::$requestParams['property'] = Helper::get_post_body_data_value( 'property','sanitize_text_field' );
		self::$requestParams['value']    = Helper::get_post_body_data_value( 'value','sanitize_text_field' );
		self::$requestParams['max_id']   = Helper::get_post_body_data_value( 'max_id' ,'absint');
	}
	
	
	/**
	 * Request handler
	 *
	 * @throws ServiceApiException
	 */
	public static function handleRequest() {
		UpdateHandler::actionProcessor( self::$requestParams );
	}
}