using System.Linq;
using Microsoft.AspNetCore.Mvc;
using Hangfire.Storage;

namespace YTManager.Controllers {
    [Produces("application/json")]
    [Route("api/admin")]
    public class AdminController : Controller {
        // Get the mass update daemon job.
        private static RecurringJobDto get_massupdatedaemon() {
            return Hangfire.JobStorage
                .Current
                .GetConnection()
                .GetRecurringJobs()
                .SingleOrDefault(j => j.Id == Mass_Updater_ID);
        }

        // ID for mass update job, used to tell if the job is running or not.
        public static string Mass_Updater_ID { get; } = "2013066213";

        // POST api/Admin/Trigger_Mass_Update
        // Trigger a mass channel update.
        [HttpPost("Trigger_Mass_Update")]
        public IActionResult Trigger_Mass_Update() {
            Hangfire.RecurringJob.Trigger(Mass_Updater_ID);
            return Ok();
        }

        // POST api/Admin/Update/YTChannelID
        // Update the videos for a specific channel.
        [HttpPost("Update/{YoutubeID}")]
        public IActionResult Update([FromRoute] string YoutubeID) {
            Hangfire.BackgroundJob.Enqueue(() => Tasks.FetchVideos.ChannelUpdate(Startup.DBStr, YoutubeID));
            return Ok();
        }

        // POST api/Admin/Start_Updater
        // Ensures that the background YT Channel update API is running.
        [HttpPost("Start_Updater")]
        public IActionResult Start_Updater() {
            if (get_massupdatedaemon() == null) {
                Hangfire.RecurringJob.AddOrUpdate(
                    Mass_Updater_ID,
                    () => Tasks.FetchVideos.MassUpdate(Startup.DBStr), Hangfire.Cron.Minutely);
            }

            return Ok();
        }

        // GET api/Admin/Updater
        // Check if the periodic update job is enqued.
        [HttpGet("Update")]
        public IActionResult Get_Update_Status() {
            return Ok(get_massupdatedaemon() == null ? "false" : "true");
        }
    }
}