<?php

namespace app\service;


use app\util\Helper;
use app\util\ArgumentNames;
use app\util\ArgumentParser;
use Google\Ads\GoogleAds\Lib\V18\GoogleAdsClient;
use Google\Ads\GoogleAds\Lib\V18\GoogleAdsClientBuilder;
use Google\Ads\GoogleAds\Lib\V18\GoogleAdsException;
use Google\Ads\GoogleAds\Lib\OAuth2TokenBuilder;
use Google\Ads\GoogleAds\V18\Common\ManualCpc;
use Google\Ads\GoogleAds\V18\Enums\AdvertisingChannelTypeEnum\AdvertisingChannelType;
use Google\Ads\GoogleAds\V18\Enums\BudgetDeliveryMethodEnum\BudgetDeliveryMethod;
use Google\Ads\GoogleAds\V18\Enums\CampaignStatusEnum\CampaignStatus;
use Google\Ads\GoogleAds\V18\Errors\GoogleAdsError;
use Google\Ads\GoogleAds\V18\Resources\Campaign;
use Google\Ads\GoogleAds\V18\Resources\Campaign\NetworkSettings;
use Google\Ads\GoogleAds\V18\Resources\CampaignBudget;
use Google\Ads\GoogleAds\V18\Services\CampaignBudgetOperation;
use Google\Ads\GoogleAds\V18\Services\CampaignOperation;
use Google\Ads\GoogleAds\V18\Services\MutateCampaignsRequest;
use Google\Ads\GoogleAds\V18\Services\MutateCampaignBudgetsRequest;
use Google\ApiCore\ApiException;

class GoogleAdsCampaignService
{
    private $googleAdsClient;
    private $customerId;
    private const NUMBER_OF_CAMPAIGNS_TO_ADD = 1;

    public function __construct()
    {
        $this->customerId = getenv('GOOGLE_ADS_CUSTOMER_ID');

        // OAuth2 Token Authentication
        $oAuth2Credential = (new OAuth2TokenBuilder())->fromFile()->build();

        // Google Ads Client initialization
        $this->googleAdsClient = (new GoogleAdsClientBuilder())
            ->fromFile()
            ->withOAuth2Credential($oAuth2Credential)
            ->build();
    }


    /**
     * Runs the example.
     *
     * @param int $customerId the customer ID
     * @param $options
     * @return mixed
     * @throws ApiException
     */
    public function runAddCampaign(int $customerId, $options): mixed
    {
        $googleAdsClient = $this->googleAdsClient;
        // Creates a single shared budget to be used by the campaigns added below.
        $budgetResourceName = self::addCampaignBudget($googleAdsClient, $customerId,$options);

        // Configures the campaign network options.
        $networkSettings = new NetworkSettings([
            'target_google_search' => true,
            'target_search_network' => true,
            // Enables Display Expansion on Search campaigns. See
            // https://support.google.com/google-ads/answer/7193800 to learn more.
            'target_content_network' => true,
            'target_partner_search_network' => false
        ]);

        $campaignOperations = [];
        for ($i = 0; $i < self::NUMBER_OF_CAMPAIGNS_TO_ADD; $i++) {
            // Creates a campaign.
            // [START add_campaigns_1]
            $campaign = new Campaign([
//                'name' => 'Interplanetary Cruise #' . Helper::getPrintableDatetime(),
                'name' => $options['campaign_name'].rand(10,99).' #'. Helper::getPrintableDatetime(),
                'advertising_channel_type' => AdvertisingChannelType::SEARCH,
                // Recommendation: Set the campaign to PAUSED when creating it to prevent
                // the ads from immediately serving. Set to ENABLED once you've added
                // targeting and the ads are ready to serve.
                'status' => CampaignStatus::PAUSED,
                // Sets the bidding strategy and budget.
                'manual_cpc' => new ManualCpc(),
                'campaign_budget' => $budgetResourceName,
                // Adds the network settings configured above.
                'network_settings' => $networkSettings,
                // Optional: Sets the start and end dates.
                'start_date' => date('Ymd', strtotime('+1 day')),
                'end_date' => date('Ymd', strtotime('+1 month'))
            ]);
            // [END add_campaigns_1]

            // Creates a campaign operation.
            $campaignOperation = new CampaignOperation();
            $campaignOperation->setCreate($campaign);
            $campaignOperations[] = $campaignOperation;
        }

        // Issues a mutate request to add campaigns.
        $campaignServiceClient = $googleAdsClient->getCampaignServiceClient();
        $response = $campaignServiceClient->mutateCampaigns(
            MutateCampaignsRequest::build($customerId, $campaignOperations)
        );
//        printf("Added %d campaigns:%s", $response->getResults()->count(), PHP_EOL);
//
        foreach ($response->getResults() as $addedCampaign) {
            /** @var Campaign $addedCampaign */
//            print "{$addedCampaign->getResourceName()}" . PHP_EOL;
            $resourceNames[] = $addedCampaign->getResourceName();
        }
         return $resourceNames;
    }

    /**
     * Runs the example.
     *
     * @param int $customerId the customer ID
     * @param $options
     * @return mixed
     * @throws ApiException
     */
    public function runAddCampaignBudget(int $customerId, $options): mixed
    {
        if(!$customerId){
            $customerId = $this->customerId;
        }
        $googleAdsClient = $this->googleAdsClient;
        // Creates a single shared budget to be used by the campaigns added below.
        $budgetResourceName = self::addCampaignBudget($googleAdsClient, $customerId,$options);

        return $budgetResourceName;
    }

    /**
     * Creates a new campaign budget in the specified client account.
     *
     * @param GoogleAdsClient $googleAdsClient the Google Ads API client
     * @param int $customerId the customer ID
     * @return string the resource name of the newly created budget
     * @throws ApiException
     */
    // [START add_campaigns]
    private static function addCampaignBudget(GoogleAdsClient $googleAdsClient, int $customerId,$options)
    {

        // Creates a campaign budget.
        $budget = new CampaignBudget([
//            'name' => 'Interplanetary Cruise Budget #' . Helper::getPrintableDatetime(),
            'name' => $options['name'].rand(10,99).' #' . Helper::getPrintableDatetime(),
//            'delivery_method' => BudgetDeliveryMethod::STANDARD,
            'amount_micros' => $options['amount'] * 1000000
        ]);

        // Creates a campaign budget operation.
        $campaignBudgetOperation = new CampaignBudgetOperation();
        $campaignBudgetOperation->setCreate($budget);

        // Issues a mutate request.
        $campaignBudgetServiceClient = $googleAdsClient->getCampaignBudgetServiceClient();
        $response = $campaignBudgetServiceClient->mutateCampaignBudgets(
            MutateCampaignBudgetsRequest::build($customerId, [$campaignBudgetOperation])
        );

        /** @var CampaignBudget $addedBudget */
        $addedBudget = $response->getResults()[0];
//        printf("Added budget named '%s'%s", $addedBudget->getResourceName(), PHP_EOL);

        return $addedBudget->getResourceName();
    }
    // [END add_campaigns]

}