<?php
namespace Sodino\Controllers;

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

/**
 * Admin Controller
 */
class AdminController {
    private $ruleRepository;
    private $upsellRepository;

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

    /**
     * Handle admin menu
     */
    public function addMenu() {
        add_menu_page(
            __('سودینو', 'sodino'),
            __('سودینو', 'sodino'),
            'manage_options',
            'sodino-rules',
            [$this, 'rulesPage'],
            'dashicons-money-alt',
            56
        );

        add_submenu_page(
            'sodino-rules',
            __('قوانین قیمت‌گذاری', 'sodino'),
            __('قوانین قیمت‌گذاری', 'sودino'),
            'manage_options',
            'sodino-rules',
            [$this, 'rulesPage']
        );

        add_submenu_page(
            'sodino-rules',
            __('افزودن قانون', 'sودino'),
            __('افزودن قانون', 'sودino'),
            'manage_options',
            'sodino-add-rule',
            [$this, 'addRulePage']
        );

        add_submenu_page(
            'sodino-rules',
            __('آپسل (پیشنهاد فروش)', 'sodino'),
            __('آپسل (پیشنهاد فروش)', 'sodino'),
            'manage_options',
            'sodino-upsells',
            [$this, 'upsellsPage']
        );

        add_submenu_page(
            'sodino-rules',
            __('افزودن آپسل', 'sodino'),
            __('افزودن آپسل', 'sodino'),
            'manage_options',
            'sodino-add-upsell',
            [$this, 'addUpsellPage']
        );

        add_submenu_page(
            'sodino-rules',
            __('قیمت رقبا (به‌زودی)', 'sodino'),
            __('قیمت رقبا (به‌زودی)', 'sodino'),
            'manage_options',
            'sodino-competitor-price',
            [$this, 'competitorPricePage']
        );

        add_submenu_page(
            'sodino-rules',
            __('داشبورد سودینو', 'sودino'),
            __('داشبورد سودینو', 'sodino'),
            'manage_options',
            'sodino-dashboard',
            [$this, 'dashboardPage']
        );

        add_submenu_page(
            'sodino-rules',
            __('تنظیمات', 'sودino'),
            __('تنظیمات', 'sودینو'),
            'manage_options',
            'sodino-settings',
            [$this, 'settingsPage']
        );
    }

    /**
     * Rules admin page
     */
    public function rulesPage() {
        $this->listRulesPage();
    }

    /**
     * Dashboard page
     */
    public function dashboardPage() {
        $settings = $this->getSettings();
        $analyticsService = new \Sodino\Services\AnalyticsService(new \Sodino\Repositories\EventRepository(), $this->ruleRepository);

        $filters = [
            'range' => isset($_GET['range']) ? sanitize_text_field($_GET['range']) : '7d',
            'start_date' => isset($_GET['start_date']) ? sanitize_text_field($_GET['start_date']) : '',
            'end_date' => isset($_GET['end_date']) ? sanitize_text_field($_GET['end_date']) : '',
            'product_id' => isset($_GET['product_id']) ? intval($_GET['product_id']) : 0,
            'category_id' => isset($_GET['category_id']) ? intval($_GET['category_id']) : 0,
        ];

        if (!empty($filters['product_id'])) {
            $filters['product_ids'] = [$filters['product_id']];
        }

        $dashboardData = $analyticsService->getDashboardData($filters);
        $productOptions = $analyticsService->getProductOptions();
        $categoryOptions = $analyticsService->getCategoryOptions();

        include SODINO_PLUGIN_DIR . 'admin/views/dashboard.php';
    }

    /**
     * List rules page
     */
    private function listRulesPage() {
        require_once SODINO_PLUGIN_DIR . 'admin/class-rules-list-table.php';

        $rulesTable = new \Sodino_Rules_List_Table($this->ruleRepository);
        $rulesTable->prepare_items();

        include SODINO_PLUGIN_DIR . 'admin/views/rules-list.php';
    }

    /**
     * Add or edit rule page
     */
    public function addRulePage() {
        if (isset($_GET['action']) && $_GET['action'] === 'edit') {
            return $this->editRulePage();
        }

        if ($_SERVER['REQUEST_METHOD'] === 'POST') {
            $this->saveRule();
        } else {
            $rule = new Rule();
            include SODINO_PLUGIN_DIR . 'admin/views/rule-form.php';
        }
    }

    /**
     * Settings page
     */
    public function settingsPage() {
        if ($_SERVER['REQUEST_METHOD'] === 'POST') {
            $this->saveSettings();
        }

        $settings = $this->getSettings();
        include SODINO_PLUGIN_DIR . 'admin/views/settings.php';
    }

    /**
     * Upsell list page
     */
    public function upsellsPage() {
        $this->listUpsellsPage();
    }

    /**
     * Add or edit upsell page
     */
    public function addUpsellPage() {
        if (isset($_GET['action']) && $_GET['action'] === 'edit') {
            return $this->editUpsellPage();
        }

        if ($_SERVER['REQUEST_METHOD'] === 'POST') {
            $this->saveUpsell();
        } else {
            $upsell = new Upsell();
            include SODINO_PLUGIN_DIR . 'admin/views/upsell-form.php';
        }
    }

    /**
     * Competitor price page
     */
    public function competitorPricePage() {
        include SODINO_PLUGIN_DIR . 'admin/views/competitor-price.php';
    }

    private function listUpsellsPage() {
        require_once SODINO_PLUGIN_DIR . 'admin/class-upsell-list-table.php';
        $upsellTable = new \Sodino_Upsell_List_Table($this->upsellRepository);
        $upsellTable->prepare_items();
        include SODINO_PLUGIN_DIR . 'admin/views/upsell-list.php';
    }

    private function editUpsellPage() {
        $id = isset($_GET['id']) ? (int) $_GET['id'] : 0;
        $upsell = $this->upsellRepository->getById($id);

        if (!$upsell) {
            wp_die(__('Upsell not found', 'sodino'));
        }

        if ($_SERVER['REQUEST_METHOD'] === 'POST') {
            $this->saveUpsell($upsell);
        } else {
            include SODINO_PLUGIN_DIR . 'admin/views/upsell-form.php';
        }
    }

    private function saveUpsell($upsell = null) {
        if (!isset($_POST['sodino_upsell_nonce']) || !wp_verify_nonce($_POST['sodino_upsell_nonce'], 'sodino_save_upsell')) {
            wp_die(__('خطای امنیتی رخ داد.', 'sodino'));
        }

        if (!$upsell) {
            $upsell = new Upsell();
        }

        $upsell->title = sanitize_text_field($_POST['title'] ?? '');
        $upsell->trigger_type = sanitize_text_field($_POST['trigger_type'] ?? 'product');
        $upsell->trigger_value = sanitize_text_field($_POST['trigger_value'] ?? '');
        $upsell->target_product_id = max(0, intval($_POST['target_product_id'] ?? 0));
        $upsell->discount_type = sanitize_text_field($_POST['discount_type'] ?? 'percentage');
        $upsell->discount_value = max(0, floatval($_POST['discount_value'] ?? 0));
        $upsell->priority = max(1, intval($_POST['priority'] ?? 10));
        $upsell->status = isset($_POST['status']) ? 1 : 0;

        $this->upsellRepository->save($upsell);

        wp_safe_redirect(admin_url('admin.php?page=sodino-upsells'));
        exit;
    }

    public function handleUpsellActions() {
        if (!isset($_GET['_wpnonce']) || !in_array($_GET['action'], ['delete_upsell', 'toggle_upsell_status'], true) || !wp_verify_nonce($_GET['_wpnonce'], $_GET['action'])) {
            return;
        }

        $id = isset($_GET['id']) ? (int) $_GET['id'] : 0;
        if (!$id) {
            return;
        }

        if ($_GET['action'] === 'delete_upsell') {
            $this->upsellRepository->delete($id);
            wp_safe_redirect(admin_url('admin.php?page=sodino-upsells'));
            exit;
        }

        if ($_GET['action'] === 'toggle_upsell_status') {
            $upsell = $this->upsellRepository->getById($id);
            if ($upsell) {
                $upsell->status = $upsell->status ? 0 : 1;
                $this->upsellRepository->save($upsell);
            }
            wp_safe_redirect(admin_url('admin.php?page=sodino-upsells'));
            exit;
        }
    }

    public function searchProductsAjax() {
        if (!check_ajax_referer('sodino_search_products', 'security', false)) {
            wp_send_json([]);
        }

        $term = sanitize_text_field($_POST['term'] ?? '');
        if (empty($term) || !function_exists('wc_get_products')) {
            wp_send_json([]);
        }

        $products = wc_get_products([
            'limit' => 10,
            'status' => 'publish',
            'search' => $term,
        ]);

        $results = [];
        foreach ($products as $product) {
            $results[] = [
                'id' => $product->get_id(),
                'label' => $product->get_name(),
            ];
        }

        wp_send_json($results);
    }

    private function getSettingsDefaults() {
        return [
            'plugin_enabled' => 1,
            'pricing_enabled' => 1,
            'upsell_enabled' => 1,
            'allow_multiple_rules' => 0,
            'strategy' => 'priority',
            'max_discount_percent' => 100,
            'min_product_price' => 0,
            'ab_testing_enabled' => 0,
            'cart_pricing_enabled' => 1,
            'scheduled_campaigns_enabled' => 1,
        ];
    }

    private function getSettings() {
        return wp_parse_args(get_option('sodino_settings', []), $this->getSettingsDefaults());
    }

    private function saveSettings() {
        if (!current_user_can('manage_options')) {
            wp_die(__('دسترسی کافی ندارید.', 'sodino'));
        }

        if (!isset($_POST['sodino_settings_nonce']) || !wp_verify_nonce($_POST['sodino_settings_nonce'], 'sodino_save_settings')) {
            wp_die(__('خطای امنیتی رخ داد.', 'sodino'));
        }

        $settings = [
            'plugin_enabled' => isset($_POST['plugin_enabled']) ? 1 : 0,
            'pricing_enabled' => isset($_POST['pricing_enabled']) ? 1 : 0,
            'upsell_enabled' => isset($_POST['upsell_enabled']) ? 1 : 0,
            'allow_multiple_rules' => isset($_POST['allow_multiple_rules']) ? 1 : 0,
            'strategy' => sanitize_text_field($_POST['strategy'] ?? 'priority'),
            'max_discount_percent' => max(0, min(100, floatval($_POST['max_discount_percent'] ?? 100))),
            'min_product_price' => max(0, floatval($_POST['min_product_price'] ?? 0)),
            'ab_testing_enabled' => isset($_POST['ab_testing_enabled']) ? 1 : 0,
            'cart_pricing_enabled' => isset($_POST['cart_pricing_enabled']) ? 1 : 0,
            'scheduled_campaigns_enabled' => isset($_POST['scheduled_campaigns_enabled']) ? 1 : 0,
        ];

        update_option('sodino_settings', $settings);

        wp_safe_redirect(add_query_arg('updated', 'true', admin_url('admin.php?page=sodino-settings')));
        exit;
    }

    /**
     * Edit rule page
     */
    private function editRulePage() {
        $id = isset($_GET['id']) ? (int) $_GET['id'] : 0;
        $rule = $this->ruleRepository->getById($id);

        if (!$rule) {
            wp_die(__('Rule not found', 'sodino'));
        }

        if ($_SERVER['REQUEST_METHOD'] === 'POST') {
            $this->saveRule($rule);
        } else {
            include SODINO_PLUGIN_DIR . 'admin/views/rule-form.php';
        }
    }

    /**
     * Save rule
     */
    private function saveRule($rule = null) {
        if (!isset($_POST['gheymatyar_rule_nonce']) || !wp_verify_nonce($_POST['gheymatyar_rule_nonce'], 'gheymatyar_save_rule')) {
            wp_die(__('خطای امنیتی رخ داد.', 'sodino'));
        }

        if (!$rule) {
            $rule = new 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'] ?? []));
        $rule->condition_type = sanitize_text_field($_POST['condition_type'] ?? 'user_type');
        $rule->condition_value = sanitize_text_field($_POST['condition_value'] ?? 'new');
        $rule->action_type = sanitize_text_field($_POST['action_type'] ?? 'discount_percent');
        $rule->action_value = sanitize_text_field($_POST['action_value'] ?? '0');
        $rule->enabled = isset($_POST['enabled']) ? 1 : 0;

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

        wp_safe_redirect(admin_url('admin.php?page=sodino-rules'));
        exit;
    }

    /**
     * Handle delete action
     */
    public function handleDelete() {
        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);

        wp_redirect(admin_url('admin.php?page=sodino-rules'));
        exit;
    }
}