<?php
namespace Sodino\Controllers;

use Sodino\Repositories\RuleRepository;
use Sodino\Models\Rule;

/**
 * Rule Controller
 */
class RuleController extends BaseController {
    private $ruleRepository;

    public function __construct(RuleRepository $ruleRepository) {
        $this->ruleRepository = $ruleRepository;
    }

    /**
     * List rules page
     */
    public function index() {
        $this->checkCapability();
        
        require_once SODINO_PLUGIN_DIR . 'admin/class-rules-list-table.php';
        $rulesTable = new \Sodino_Rules_List_Table($this->ruleRepository);
        $rulesTable->prepare_items();

        $this->render('rules-list', [
            'rulesTable' => $rulesTable,
            'current_page' => 'sodino-rules'
        ]);
    }

    /**
     * Create rule page
     */
    public function create() {
        $this->checkCapability();

        if ($_SERVER['REQUEST_METHOD'] === 'POST') {
            return $this->store();
        }

        $rule = new Rule();
        $this->render('rule-form', [
            'rule' => $rule,
            'current_page' => 'sodino-add-rule'
        ]);
    }

    /**
     * Edit rule page
     */
    public function edit() {
        $this->checkCapability();

        $id = isset($_GET['id']) ? (int) $_GET['id'] : 0;
        $rule = $this->ruleRepository->getById($id);

        if (!$rule) {
            $this->redirect(
                admin_url('admin.php?page=sodino-rules'),
                __('قانون یافت نشد.', 'sodino'),
                'error'
            );
        }

        if ($_SERVER['REQUEST_METHOD'] === 'POST') {
            return $this->update($rule);
        }

        $this->render('rule-form', [
            'rule' => $rule,
            'current_page' => 'sodino-add-rule'
        ]);
    }

    /**
     * Store new rule
     */
    private function store() {
        $this->verifyNonce('sodino_rule_nonce', 'sodino_save_rule');

        $validator = $this->validate($_POST);
        $validator->required('name', __('نام قانون الزامی است.', 'sodino'))
                  ->numeric('priority')
                  ->min('priority', 1)
                  ->numeric('usage_limit')
                  ->min('usage_limit', 0);

        if ($validator->fails()) {
            $this->redirect(
                admin_url('admin.php?page=sodino-add-rule'),
                $validator->firstError(),
                'error'
            );
        }

        $rule = new Rule();
        $this->fillRuleFromPost($rule);
        $this->ruleRepository->save($rule);

        $this->redirect(
            admin_url('admin.php?page=sodino-rules'),
            __('قانون با موفقیت ایجاد شد.', 'sodino')
        );
    }

    /**
     * Update existing rule
     */
    private function update($rule) {
        $this->verifyNonce('sodino_rule_nonce', 'sodino_save_rule');

        $validator = $this->validate($_POST);
        $validator->required('name', __('نام قانون الزامی است.', 'sodino'))
                  ->numeric('priority')
                  ->min('priority', 1)
                  ->numeric('usage_limit')
                  ->min('usage_limit', 0);

        if ($validator->fails()) {
            $this->redirect(
                admin_url('admin.php?page=sodino-add-rule&action=edit&id=' . $rule->id),
                $validator->firstError(),
                'error'
            );
        }

        $this->fillRuleFromPost($rule);
        $this->ruleRepository->save($rule);

        $this->redirect(
            admin_url('admin.php?page=sodino-rules'),
            __('قانون با موفقیت به‌روزرسانی شد.', 'sodino')
        );
    }

    /**
     * Delete rule
     */
    public function delete() {
        $this->checkCapability();

        if (!isset($_GET['_wpnonce']) || !wp_verify_nonce($_GET['_wpnonce'], 'delete_rule')) {
            wp_die(__('خطای امنیتی رخ داد.', 'sodino'));
        }

        $id = isset($_GET['id']) ? (int) $_GET['id'] : 0;
        $this->ruleRepository->delete($id);

        $this->redirect(
            admin_url('admin.php?page=sodino-rules'),
            __('قانون با موفقیت حذف شد.', 'sodino')
        );
    }

    /**
     * Fill rule from POST data
     */
    private function fillRuleFromPost($rule) {
        $rule->name = sanitize_text_field($_POST['name'] ?? '');
        $rule->priority = max(1, intval($_POST['priority'] ?? 10));
        $rule->usage_limit = max(0, intval($_POST['usage_limit'] ?? 0));
        $rule->user_roles = array_map('sanitize_text_field', (array) ($_POST['user_roles'] ?? []));
        $rule->start_date = !empty($_POST['start_date']) ? sanitize_text_field($_POST['start_date']) : null;
        $rule->end_date = !empty($_POST['end_date']) ? sanitize_text_field($_POST['end_date']) : null;
        $rule->enabled = isset($_POST['enabled']) ? 1 : 0;

        if (isset($_POST['conditions']) && is_array($_POST['conditions'])) {
            $rule->conditions = array_map(function($condition) {
                return [
                    'type' => sanitize_text_field($condition['type'] ?? ''),
                    'value' => sanitize_text_field($condition['value'] ?? '')
                ];
            }, $_POST['conditions']);
        } else {
            $rule->conditions = [
                [
                    'type' => sanitize_text_field($_POST['condition_type'] ?? 'user_type'),
                    'value' => sanitize_text_field($_POST['condition_value'] ?? 'new'),
                ],
            ];
        }

        if (isset($_POST['actions']) && is_array($_POST['actions'])) {
            $rule->actions = array_map(function($action) {
                return [
                    'type' => sanitize_text_field($action['type'] ?? ''),
                    'value' => sanitize_text_field($action['value'] ?? '')
                ];
            }, $_POST['actions']);
        } else {
            $rule->actions = [
                [
                    'type' => sanitize_text_field($_POST['action_type'] ?? 'discount_percent'),
                    'value' => sanitize_text_field($_POST['action_value'] ?? '0'),
                ],
            ];
        }

        $rule->syncLegacyFields();
    }
}