<?php
namespace Sodino\Models;

/**
 * Rule Model
 */
class Rule {
    public $id;
    public $name;
    public $conditions;
    public $actions;
    public $priority;
    public $usage_limit;
    public $usage_count;
    public $user_roles;
    public $start_date;
    public $end_date;
    public $enabled;
    public $created_at;
    public $updated_at;
    public $condition_type;
    public $condition_value;
    public $action_type;
    public $action_value;

    /**
     * Constructor
     */
    public function __construct($data = []) {
        $this->id = $data['id'] ?? null;
        $this->name = $data['name'] ?? '';
        $this->conditions = $this->parseJsonField($data['conditions'] ?? '[]');
        $this->actions = $this->parseJsonField($data['actions'] ?? '[]');
        $this->priority = isset($data['priority']) ? (int) $data['priority'] : 10;
        $this->usage_limit = isset($data['usage_limit']) ? (int) $data['usage_limit'] : 0;
        $this->usage_count = isset($data['usage_count']) ? (int) $data['usage_count'] : 0;
        $this->user_roles = $this->parseRolesField($data['user_roles'] ?? '');
        $this->start_date = $data['start_date'] ?? null;
        $this->end_date = $data['end_date'] ?? null;
        $this->enabled = isset($data['enabled']) ? (int) $data['enabled'] : 1;
        $this->created_at = $data['created_at'] ?? null;
        $this->updated_at = $data['updated_at'] ?? null;
        $this->syncLegacyFields();
    }

    private function parseJsonField($value) {
        if (is_array($value)) {
            return $value;
        }

        $decoded = json_decode($value, true);
        return is_array($decoded) ? $decoded : [];
    }

    private function parseRolesField($value) {
        if (is_array($value)) {
            return array_filter(array_map('trim', $value));
        }

        if (!is_string($value)) {
            return [];
        }

        return array_filter(array_map('trim', explode(',', $value)));
    }

    public function syncLegacyFields() {
        $condition = $this->conditions[0] ?? [];
        $action = $this->actions[0] ?? [];

        $this->condition_type = $condition['type'] ?? 'user_type';
        $this->condition_value = $condition['value'] ?? 'new';
        $this->action_type = $action['type'] ?? 'discount_percent';
        $this->action_value = $action['value'] ?? 0;
    }

    /**
     * Convert to array
     */
    public function toArray() {
        return [
            'id' => $this->id,
            'name' => $this->name,
            'conditions' => wp_json_encode($this->conditions),
            'actions' => wp_json_encode($this->actions),
            'priority' => $this->priority,
            'usage_limit' => $this->usage_limit,
            'usage_count' => $this->usage_count,
            'user_roles' => is_array($this->user_roles) ? implode(',', $this->user_roles) : $this->user_roles,
            'start_date' => $this->start_date,
            'end_date' => $this->end_date,
            'enabled' => $this->enabled,
            'created_at' => $this->created_at,
            'updated_at' => $this->updated_at,
        ];
    }
    
    /**
     * Check if rule is active
     */
    public function isActive() {
        if (!$this->enabled) {
            return false;
        }
        
        $now = current_time('mysql');
        
        if (!empty($this->start_date) && $now < $this->start_date) {
            return false;
        }
        
        if (!empty($this->end_date) && $now > $this->end_date) {
            return false;
        }
        
        return true;
    }
    
    /**
     * Check if usage limit reached
     */
    public function hasReachedLimit() {
        return $this->usage_limit > 0 && $this->usage_count >= $this->usage_limit;
    }
}