<?php

defined('BASEPATH') or exit('No direct script access allowed');

class Admin extends AdminController
{
    public function __construct()
    {
        parent::__construct();
        $this->load->model('paystack_model');
    }

    /**
     * Display settings page
     */
    public function settings()
    {
        if (!has_permission('settings', '', 'view')) {
            access_denied('settings');
        }

        if ($this->input->post()) {
            if (!has_permission('settings', '', 'edit')) {
                access_denied('settings');
            }

            $data = $this->input->post();
            $success = $this->paystack_model->update_settings($data);

            if ($success) {
                set_alert('success', _l('settings_updated'));
            }
        }

        $data['title'] = _l('paystack_settings');
        $data['tab'] = 'settings';
        $this->load->view('admin/settings', $data);
    }

    /**
     * Display transaction logs
     */
    public function transactions()
    {
        if (!has_permission('payments', '', 'view')) {
            access_denied('payments');
        }

        $data['title'] = _l('paystack_transactions');
        $data['tab'] = 'transactions';

        // Get filters
        $filter = [
            'start_date' => $this->input->get('start_date'),
            'end_date' => $this->input->get('end_date'),
            'status' => $this->input->get('status')
        ];

        $data['transactions'] = $this->paystack_model->get_transactions($filter);
        $this->load->view('admin/transactions', $data);
    }

    /**
     * Display test mode interface
     */
    public function test_mode()
    {
        if (!has_permission('settings', '', 'view')) {
            access_denied('settings');
        }

        $data['title'] = _l('paystack_test_mode');
        $data['tab'] = 'test_mode';
        $data['test_keys'] = $this->paystack_model->get_test_keys();
        $this->load->view('admin/test_mode', $data);
    }

    /**
     * Display payment status dashboard
     */
    public function dashboard()
    {
        if (!has_permission('payments', '', 'view')) {
            access_denied('payments');
        }

        $data['title'] = _l('paystack_dashboard');
        $data['tab'] = 'dashboard';

        // Get statistics
        $data['stats'] = $this->paystack_model->get_payment_stats();
        $data['recent_transactions'] = $this->paystack_model->get_recent_transactions();
        $data['monthly_chart'] = $this->paystack_model->get_monthly_chart_data();

        $this->load->view('admin/dashboard', $data);
    }

    /**
     * Get transaction details (AJAX)
     */
    public function get_transaction_details($reference)
    {
        if (!has_permission('payments', '', 'view')) {
            ajax_access_denied();
        }

        $transaction = $this->paystack_model->get_transaction($reference);
        echo json_encode($transaction);
    }

    /**
     * Verify test webhook
     */
//    public function test_webhook()
//    {
//        if (!has_permission('settings', '', 'view')) {
//            ajax_access_denied();
//        }
//
//        $this->load->library('paystack_gateway');
//        $result = $this->paystack_gateway->test_webhook();
//
//        echo json_encode($result);
//    }

    /**
     * Initiate test payment
     */
    public function initiate_test_payment()
    {
        if (!has_permission('settings', '', 'view')) {
            ajax_access_denied();
        }

        $amount = $this->input->post('amount');
        $email = $this->input->post('email');

        if (!$amount || !$email) {
            echo json_encode([
                'success' => false,
                'message' => _l('invalid_input')
            ]);
            return;
        }

        $reference = 'TEST_' . time() . '_' . mt_rand(1000, 9999);

        echo json_encode([
            'success' => true,
            'reference' => $reference
        ]);
    }

    /**
     * Test webhook connection
     */
    public function test_webhook()
    {
        if (!has_permission('settings', '', 'view')) {
            ajax_access_denied();
        }

        $this->load->library('paystack_gateway');

        // Try to send a test webhook
        $webhook_url = site_url('paystack/webhook');
        $test_data = [
            'event' => 'test',
            'data' => [
                'reference' => 'TEST_' . time(),
                'status' => 'success'
            ]
        ];

        $ch = curl_init($webhook_url);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($test_data));
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_HTTPHEADER, [
            'Content-Type: application/json',
            'X-Paystack-Signature: ' . hash_hmac('sha512', json_encode($test_data), $this->paystack_gateway->get_webhook_secret())
        ]);

        $response = curl_exec($ch);
        $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);

        if ($http_code == 200) {
            echo json_encode([
                'success' => true,
                'message' => _l('webhook_received_response')
            ]);
        } else {
            echo json_encode([
                'success' => false,
                'message' => _l('webhook_connection_failed') . ' (HTTP ' . $http_code . ')'
            ]);
        }
    }

    /**
     * Log debug message
     */
    public function log_debug()
    {
        if (!has_permission('settings', '', 'view')) {
            ajax_access_denied();
        }

        $message = $this->input->post('message');
        if ($message) {
            $this->paystack_model->add_debug_log($message);
        }
    }

    /**
     * Get debug log
     */
    public function get_debug_log()
    {
        if (!has_permission('settings', '', 'view')) {
            ajax_access_denied();
        }

        $log = $this->paystack_model->get_debug_log();
        echo $log;
    }

    /**
     * Clear debug log
     */
    public function clear_debug_log()
    {
        if (!has_permission('settings', '', 'view')) {
            ajax_access_denied();
        }

        $this->paystack_model->clear_debug_log();
    }
}