<?php
/**
 * Report Data Model Class - Handles data structure and validation
 *
 * @package StudiouWCCustomReports
 */

if (!defined('ABSPATH')) {
    exit;
}

class StudiouWC_Report_Data {
    
    private $view;
    private $date_from;
    private $date_to;
    private $statuses;
    private $per_page;
    private $paged;
    private $orderby;
    private $order;
    
    public function __construct($params = array()) {
        $this->view = $params['view'] ?? 'product_categories_summary';
        $this->date_from = $params['date_from'] ?? '';
        $this->date_to = $params['date_to'] ?? date('Y-m-d');
        $this->statuses = $params['statuses'] ?? array();
        $this->per_page = intval($params['per_page'] ?? 20);
        $this->paged = intval($params['paged'] ?? 1);
        $this->orderby = $params['orderby'] ?? 'category';
        $this->order = $params['order'] ?? 'ASC';
        
        $this->validate_params();
    }
    
    private function validate_params() {
        // Validate date format
        if (!empty($this->date_from) && !$this->is_valid_date($this->date_from)) {
            $this->date_from = date('Y-m-d', strtotime('-1 month'));
        }
        
        if (!empty($this->date_to) && !$this->is_valid_date($this->date_to)) {
            $this->date_to = date('Y-m-d');
        }
        
        // Validate order direction
        if (!in_array(strtoupper($this->order), array('ASC', 'DESC'))) {
            $this->order = 'ASC';
        }
        
        // Validate orderby column
        $valid_orderby = array('category', 'orders_count', 'total_price', 'customer_name', 'customer_email');
        if (!in_array($this->orderby, $valid_orderby)) {
            $this->orderby = 'category';
        }
        
        // Validate per_page limits
        if ($this->per_page < 1 || $this->per_page > 1000) {
            $this->per_page = 20;
        }
        
        // Validate paged
        if ($this->paged < 1) {
            $this->paged = 1;
        }
    }
    
    private function is_valid_date($date) {
        $d = DateTime::createFromFormat('Y-m-d', $date);
        return $d && $d->format('Y-m-d') === $date;
    }
    
    // Getters
    public function get_view() { 
        return $this->view; 
    }
    
    public function get_date_from() { 
        return $this->date_from; 
    }
    
    public function get_date_to() { 
        return $this->date_to; 
    }
    
    public function get_statuses() { 
        return $this->statuses; 
    }
    
    public function get_per_page() { 
        return $this->per_page; 
    }
    
    public function get_paged() { 
        return $this->paged; 
    }
    
    public function get_orderby() { 
        return $this->orderby; 
    }
    
    public function get_order() { 
        return $this->order; 
    }
    
    public function to_array() {
        return array(
            'view' => $this->view,
            'date_from' => $this->date_from,
            'date_to' => $this->date_to,
            'statuses' => $this->statuses,
            'per_page' => $this->per_page,
            'paged' => $this->paged,
            'orderby' => $this->orderby,
            'order' => $this->order
        );
    }
}