using System;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Threading.Tasks;
using Newtonsoft.Json.Linq;

class Program
{
    static async Task Main(string[] args)
    {
        string organization = "your-organization-name";
        string project = "your-project-name";
        string pat = "your-personal-access-token";

        // 获取项目级别的安全命名空间
        string securityNamespaceUrl = $"https://dev.azure.com/{organization}/_apis/securitynamespaces?api-version=6.0";
        string securityNamespaceId = await GetSecurityNamespaceId(securityNamespaceUrl, pat);

        // 获取项目级别的权限
        string permissionsUrl = $"https://dev.azure.com/{organization}/_apis/permissions/{securityNamespaceId}?api-version=6.0";
        await GetProjectAdministrators(permissionsUrl, pat, project);
    }

    static async Task<string> GetSecurityNamespaceId(string url, string pat)
    {
        using (HttpClient client = new HttpClient())
        {
            client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", 
                Convert.ToBase64String(System.Text.Encoding.ASCII.GetBytes($":{pat}")));

            HttpResponseMessage response = await client.GetAsync(url);
            response.EnsureSuccessStatusCode();
            string responseBody = await response.Content.ReadAsStringAsync();

            JObject result = JObject.Parse(responseBody);
            foreach (var ns in result["value"])
            {
                if (ns["name"].ToString() == "Project")
                {
                    return ns["namespaceId"].ToString();
                }
            }
        }
        return null;
    }

    static async Task GetProjectAdministrators(string url, string pat, string project)
    {
        using (HttpClient client = new HttpClient())
        {
            client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", 
                Convert.ToBase64String(System.Text.Encoding.ASCII.GetBytes($":{pat}")));

            HttpResponseMessage response = await client.GetAsync(url);
            response.EnsureSuccessStatusCode();
            string responseBody = await response.Content.ReadAsStringAsync();

            JObject result = JObject.Parse(responseBody);
            foreach (var permission in result["value"])
            {
                if (permission["displayName"].ToString() == "Project Administrators")
                {
                    Console.WriteLine($"Project Administrators for {project}:");
                    foreach (var identity in permission["identities"])
                    {
                        Console.WriteLine($"- {identity["displayName"]} ({identity["descriptor"]})");
                    }
                    break;
                }
            }
        }
    }
}