<?php

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

class Paystack_error_handler
{
    protected $CI;
    protected $errors = [];

    public function __construct()
    {
        $this->CI = &get_instance();
    }

    /**
     * Handle API errors
     */
    public function handle_api_error($response, $context = '')
    {
        $error_data = [
            'type' => 'api_error',
            'context' => $context,
            'message' => isset($response->message) ? $response->message : 'Unknown API error',
            'code' => isset($response->code) ? $response->code : null,
            'timestamp' => date('Y-m-d H:i:s')
        ];

        $this->log_error($error_data);
        return $error_data;
    }

    /**
     * Handle validation errors
     */
    public function handle_validation_error($errors, $context = '')
    {
        $error_data = [
            'type' => 'validation_error',
            'context' => $context,
            'message' => is_array($errors) ? implode(', ', $errors) : $errors,
            'timestamp' => date('Y-m-d H:i:s')
        ];

        $this->log_error($error_data);
        return $error_data;
    }

    /**
     * Handle system errors
     */
    public function handle_system_error($exception, $context = '')
    {
        $error_data = [
            'type' => 'system_error',
            'context' => $context,
            'message' => $exception->getMessage(),
            'file' => $exception->getFile(),
            'line' => $exception->getLine(),
            'trace' => $exception->getTraceAsString(),
            'timestamp' => date('Y-m-d H:i:s')
        ];

        $this->log_error($error_data);
        return $error_data;
    }

    /**
     * Log error
     */
    protected function log_error($error_data)
    {
        // Add to errors array
        $this->errors[] = $error_data;

        // Log to database
        $this->CI->load->model('paystack_model');
        $log_data = [
            'message' => json_encode($error_data),
            'log_type' => 'error'
        ];
        $this->CI->paystack_model->add_payment_log($log_data);

        // Log to system log if serious error
        if ($error_data['type'] === 'system_error') {
            log_message('error', 'Paystack Error: ' . $error_data['message']);
        }
    }

    /**
     * Get last error
     */
    public function get_last_error()
    {
        return end($this->errors);
    }

    /**
     * Get all errors
     */
    public function get_all_errors()
    {
        return $this->errors;
    }

    /**
     * Clear errors
     */
    public function clear_errors()
    {
        $this->errors = [];
    }
}