using Microsoft.AspNetCore.Components.Forms;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http.Headers;
using System.Net.Http.Json;
using System.Text;
using System.Threading.Tasks;
using TIAMWebApp.Shared.Application.Models;

namespace TIAMWebApp.Shared.Application.Services
{
    public class TourService
    {
        private readonly HttpClient _http;

        public TourService(HttpClient http)
        {
            _http = http;
        }

        public async Task<List<TourInfo>> GetAllAsync() =>
            await _http.GetFromJsonAsync<List<TourInfo>>("/api/tours") ?? new();

        public async Task<TourInfo?> GetAsync(Guid id) =>
            await _http.GetFromJsonAsync<TourInfo>($"/api/tours/{id}");

        public async Task CreateAsync(TourInfo tour, IBrowserFile? coverImage)
        {
            var content = new MultipartFormDataContent
    {
        { new StringContent(tour.TransferDestinationId.ToString()), nameof(TourForm.TransferDestinationId) },
        { new StringContent(tour.Title ?? ""), nameof(TourForm.Title) },
        { new StringContent(tour.FancyDescription ?? ""), nameof(TourForm.Description) }
    };

            if (coverImage != null)
            {
                var stream = coverImage.OpenReadStream(maxAllowedSize: 10 * 1024 * 1024); // adjust limit if needed
                var fileContent = new StreamContent(stream);
                fileContent.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue(coverImage.ContentType);

                content.Add(fileContent, nameof(TourForm.CoverImage), coverImage.Name);
            }

            var response = await _http.PostAsync("/api/tours", content);
            response.EnsureSuccessStatusCode();
        }


        public async Task UpdateAsync(TourInfo tour, IBrowserFile? file)
        {
            // Step 1: Update metadata
            var response = await _http.PutAsJsonAsync($"/api/tours/{tour.TransferDestinationId}", tour);
            response.EnsureSuccessStatusCode();

            // Step 2: Upload new image if provided
            if (file is not null)
            {
                using var content = new MultipartFormDataContent();
                var fileContent = new StreamContent(file.OpenReadStream(maxAllowedSize: 5 * 1024 * 1024));
                fileContent.Headers.ContentType = new MediaTypeHeaderValue(file.ContentType);
                content.Add(content: fileContent, name: "file", fileName: file.Name);

                var uploadResponse = await _http.PostAsync($"/api/tours/{tour.TransferDestinationId}/image", content);
                uploadResponse.EnsureSuccessStatusCode();
            }
        }

        public async Task DeleteAsync(Guid id)
        {
            var response = await _http.DeleteAsync($"/api/tours/{id}");
            response.EnsureSuccessStatusCode();
        }
    }
}