<?php

declare(strict_types=1);

// src/Utils/TimeTrackingServices/YoutrackService.php

namespace RprtCli\Utils\TimeTrackingServices;

use GuzzleHttp\ClientInterface;
use RprtCli\Utils\Configuration\ConfigurationInterface;

class YoutrackService implements YoutrackInterface
{

    protected $config;

    protected $httpClient;

    public function __construct(ConfigurationInterface $config, ClientInterface $http_client)
    {
        $this->config = $config;
        $this->httpClient = $http_client;
    }

    public function testYoutrackapi(): ?string
    {
        // Get base url from config or add input.
        // Get token or add input.
        $path = 'youtrack/api/admin/users/me';
        $yt_url = $this->getYtUrl($path);
        $yt_token = $this->getYtToken();
        $query = ['fields' => 'id,email,fullName'];
        $headers = [
            "Authorization" => "Bearer $yt_token",
            'Cache-Control' =>'no-cache',
        ];
        $me_response = $this->httpClient->request('GET', $yt_url, [
            'query' => $query,
            'headers' => $headers
        ]);
        $test = (string) $me_response->getBody()->getContents();
        $me_json = (array) json_decode($test);
        if ($me_json && isset($me_json['fullName'])) {
            return $me_json['fullName'];
        }

        return NULL;
    }

    public function getReportId(): ?string
    {
        // --report option value should take precedence.
        // @TODO error handling.
        $yt_report_id = $this->config->get('youtrack.report_id');
        if (!$yt_report_id) {
            $yt_report_id = readline('Enter the report id: ');
        }
        return $yt_report_id;
    }

    public function downloadReport(string $report_id): ?string
    {
        $path = "youtrack/api/reports/$report_id/export/csv";
        $query = ['$top' => -1];
        $yt_token = $this->getYtToken();
        $headers = [
            'Accept' => 'text/plain, */*',
            'Accept-Language' => 'en-US,en;q=0.5',
            "Authorization" => "Bearer $yt_token",
        ];

        $csv_response = $this->httpClient->request('GET', $this->getYtUrl($path), [
            'headers' => $headers,
            'query' => $query,
        ]);

        // Write csv response test into temporary file.
        $csv_file = tempnam(sys_get_temp_dir(), 'yt_csv_');
        file_put_contents($csv_file, $csv_response->getBody());
        return $csv_file;
    }

    protected function getYtToken(): string {
        $yt_token = $this->config->get('tracking_service.youtrack.auth_token', FALSE); // 
        if (!$yt_token) {
            $yt_token = readline('Enter your youtrack authentication token: ');
        }
        return $yt_token;
    }

    protected function getYtUrl(string $path = ''): ?string {
        $yt_base_url = $this->config->get('tracking_service.youtrack.base_url', FALSE);
        if (!$yt_base_url) {
            $yt_base_url = readline('Enter base url for of the youtrack service: ');
        }
        if (!empty($path)) {
            $yt_base_url = $yt_base_url . '/' . trim($path, '/');
        }
        return $yt_base_url;
    }
}