using Jellyfin.Plugin.MediaCleaner.Helpers;
using Jellyfin.Plugin.MediaCleaner.Models;
using Microsoft.AspNetCore.Mvc;
using System;
using System.Collections.Generic;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text.Json;
using System.Text.Json.Serialization;
using System.Threading.Tasks;
using System.Web;
using Microsoft.AspNetCore.Http;
using System.Linq;

namespace Jellyfin.Plugin.MediaCleaner.Controllers;

public record ConnectionTestRequest(string Address, string ApiKey);

public record RadarrMovie(
    [property: JsonPropertyName("id")] int? Id,
    [property: JsonPropertyName("title")] string? Title
);

[Route("radarr")]
public class RadarrController : Controller
{
    private static Configuration Configuration =>
            Plugin.Instance!.Configuration;

    private readonly HttpClient _httpClient;

    public RadarrController(HttpClient httpClient)
    {
        _httpClient = httpClient;

        // Set the default request headers
        _httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
        _httpClient.DefaultRequestHeaders.Add("X-Api-Key", Configuration.RadarrAPIKey);
    }

    private async Task<ObjectResult> GetRadarrMovieInfo(MovieInfo movieInfo)
    {
        var responseBody = await HttpHelper.SendHttpRequestAsync(
            _httpClient,
            Configuration.RadarrAddress,
            HttpMethod.Get,
            $"/api/v3/movie?tmdbId={Uri.EscapeDataString(movieInfo.TmdbId ?? string.Empty)}&excludeLocalCovers=false"
        ).ConfigureAwait(false);

        var movies = JsonSerializer.Deserialize<List<RadarrMovie>>(responseBody.GetRawText());
        var movie = movies?.FirstOrDefault();

        if (movie == null)
        {
            return NotFound("Movie not found in Radarr library.");
        }

        return Ok(movie);
    }

    [HttpPost("deleteMovieFromRadarr")]
    public async Task<IActionResult> DeleteMovieFromRadarr([FromBody] MovieInfo movieInfo){

        if (movieInfo == null || string.IsNullOrEmpty(movieInfo.TmdbId))
        {
            return BadRequest("Invalid movie information provided.");
        }

        try
        {
            var radarrMovieInfoResult = await GetRadarrMovieInfo(movieInfo).ConfigureAwait(false);

            if(radarrMovieInfoResult.StatusCode != StatusCodes.Status200OK || radarrMovieInfoResult.Value is not RadarrMovie){
                return radarrMovieInfoResult;
            }

            RadarrMovie movie = (RadarrMovie)radarrMovieInfoResult.Value;

            var responseBody = await HttpHelper.SendHttpRequestAsync(
                _httpClient,
                Configuration.RadarrAddress,
                HttpMethod.Delete,
                $"/api/v3/movie/{movie.Id}?deleteFiles=true&addImportExclusion=true"
            ).ConfigureAwait(false);

            // Radarr typically returns an empty body on successful delete.
            return Ok(responseBody);
        }
        catch (HttpRequestException e)
        {
            return StatusCode(StatusCodes.Status500InternalServerError, $"An unexpected error occurred. {e.Message}");
        }
    }

    [HttpPost("testConnection")]
    public async Task<IActionResult> TestConnection([FromBody] ConnectionTestRequest request)
    {
        if (request == null || string.IsNullOrWhiteSpace(request.Address) || string.IsNullOrWhiteSpace(request.ApiKey))
        {
            return BadRequest("Address and ApiKey are required.");
        }

        var address = request.Address.Trim();
        if (!address.StartsWith("http://", StringComparison.OrdinalIgnoreCase) &&
            !address.StartsWith("https://", StringComparison.OrdinalIgnoreCase))
        {
            address = "http://" + address;
        }

        try
        {
            using var httpRequest = new HttpRequestMessage(HttpMethod.Get, address);
            httpRequest.Headers.Add("X-Api-Key", request.ApiKey);

            var response = await _httpClient.SendAsync(httpRequest).ConfigureAwait(false);
            return Ok(new { success = response.IsSuccessStatusCode });
        }
        catch (HttpRequestException e)
        {
            return StatusCode(StatusCodes.Status502BadGateway, e.Message);
        }
        catch (Exception e)
        {
            return StatusCode(StatusCodes.Status500InternalServerError, e.Message);
        }
    }
}