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

class Campaign extends Public_Controller
{
    public function __construct()
    {
        parent::__construct();
        $this->load->model([
            'promotional_campaign_m'
        ]);
        $this->load->helper('url');

        if ($this->session->userdata('site_lang') == 'english') {
            $this->lang->load('mainpage', 'english');
        } else {
            $this->lang->load('mainpage', 'indonesian');
        }

        $this->load->library('CampaignManager');
        $this->load->library('GoogleClient');

        $loginUrl = $this->googleclient->getLoginUrl();
        $this->data_footer['googleUrl'] = $loginUrl;
    }

    public function index($campaign_code = null)
    {
        if (!$campaign_code) {
            show_404();
            return;
        }

        // Check is campaign available, and is campaign active
        // If campaign inactive, redirect to base url
        // If campaign active, check due date, if valid set campaign data to session
        // Retrieve products for this campaign (check for excluded product first, applicable products, applicable categories)

        try {
            // Validate campaign
            $campaign = $this->campaignmanager->get_active_campaign($campaign_code);

            if (!$campaign) {
                // Campaign not found or inactive
                $this->session->set_flashdata('error', 'Campaign tidak ditemukan atau sudah tidak aktif.');
                redirect(base_url());
                return;
            }

            // Check if campaign is within valid date range
            if (!$this->campaignmanager->is_campaign_valid($campaign)) {
                $this->session->set_flashdata('error', 'Campaign sudah berakhir.');
                redirect(base_url());
                return;
            }

            // Check usage limit
            if ($this->campaignmanager->is_usage_limit_reached($campaign)) {
                $this->session->set_flashdata('error', 'Maaf, kuota campaign sudah habis.');
                redirect(base_url());
                return;
            }

            // Set campaign to session for persistent discount
            $this->campaignmanager->set_campaign_session($campaign);

            // 5. Log campaign access for analytics
            $this->campaignmanager->log_campaign_access($campaign->id, 'view');

            redirect(base_url('product'));
        } catch (Exception $e) {
        }
    }
}