using System;
using System.Collections.Generic;
using ln.http;
using ln.http.router;
using ln.json;
using ln.logging;
using ln.type;
using ln.threading;
using ln.build;

namespace ln.build.server
{
    class Program
    {

        static Pool pool = new Pool(2);

        static HttpResponse WebHookRequest(HttpRoutingContext context, HttpRequest request)
        {
            HttpResponse response = new HttpResponse(request);

            if (!request.Method.Equals("POST"))
            {
                response.StatusCode = 405;
            } else if (!request.GetRequestHeader("content-type").Equals("application/json"))
            {
                response.StatusCode = 415;
                response.ContentWriter.WriteLine("Unsupported Media Type, should be application/json");
            } else {
                JSONValue jsonRequest = JSONParser.Parse(request.ContentReader.ReadToEnd());
                if (jsonRequest is JSONObject message)
                {
                    try
                    {
                        string repoName = message["repository"]["name"].ToNative().ToString();
                        string cloneUrl = message["repository"]["clone_url"].ToNative().ToString();
                        string notifyEmail = message["pusher"]["email"].ToNative().ToString();

                        foreach (JSONValue commit in (message["commits"] as JSONArray).Children)
                        {
                            string commitID = commit["id"].ToNative().ToString();

                            Logging.Log("Received CI request for repository {2} [{0}] for the commit {1}", cloneUrl, commitID, repoName);

                            CIJob job = new CIJob(repoName, cloneUrl, commitID, notifyEmail);

                            job.SetVariable("REPO_OWNER", message["repository"]["owner"]["username"].ToNative().ToString());
                            job.SetVariable("REPO_NAME", message["repository"]["name"].ToNative().ToString());
                            job.SetVariable("COMMIT_ID", commitID);

                            job.UpdateBuildState(BuildState.PENDING);

                            pool.Enqueue(job);
                        }


                    } catch (Exception e)
                    {
                        response.StatusCode = 500;
                        response.StatusMessage = "An exception occured";
                        response.ContentWriter.WriteLine("{0}", e.ToString());
                        Logging.Log(e);
                    }

                } else {
                    response.StatusCode = 400;
                }

            }


            return response;
        }

        static void Main(string[] args)
        {
            CommandRunner.DefaultThrow = CRThrow.NEGATIVE;

            SimpleRouter genericRouter = new SimpleRouter();
            genericRouter.AddSimpleRoute("/", WebHookRequest);

            HTTPServer httpServer = new HTTPServer(new Endpoint(IPv6.ANY, 1888), new LoggingRouter(genericRouter));

            pool.Start();

            Logging.Log("Starting http listener...");
            httpServer.Start();
        }



    }
}