using System.Net.Http.Json;
using Tasks.Module.Models;

namespace Tasks.Module.Services;

public interface IViewService
{
    Task<List<TaskViewDto>> GetAllViewsAsync();
    Task<TaskViewDto?> GetViewByIdAsync(string id);
    Task<TaskViewDto> CreateViewAsync(CreateTaskViewDto createDto);
    Task<TaskViewDto?> UpdateViewAsync(UpdateTaskViewDto updateDto);
    Task<bool> DeleteViewAsync(string id);
    Task<List<TodoItemDto>> GetTasksByViewAsync(string viewId);
    Task<TodoItemDto> CreateTodoWithViewCriteriaAsync(string viewId, CreateTodoItemDto createDto);
}

public class ViewService : IViewService
{
    private readonly HttpClient _httpClient;

    public ViewService(HttpClient httpClient)
    {
        _httpClient = httpClient;
    }

    public async Task<List<TaskViewDto>> GetAllViewsAsync()
    {
        var response = await _httpClient.GetFromJsonAsync<List<TaskViewDto>>("/api/v1/views");
        return response ?? new List<TaskViewDto>();
    }

    public async Task<TaskViewDto?> GetViewByIdAsync(string id)
    {
        return await _httpClient.GetFromJsonAsync<TaskViewDto>($"/api/v1/views/{id}");
    }

    public async Task<TaskViewDto> CreateViewAsync(CreateTaskViewDto createDto)
    {
        var response = await _httpClient.PostAsJsonAsync("/api/v1/views", createDto);
        response.EnsureSuccessStatusCode();
        return await response.Content.ReadFromJsonAsync<TaskViewDto>() ?? throw new Exception("Failed to create view");
    }

    public async Task<TaskViewDto?> UpdateViewAsync(UpdateTaskViewDto updateDto)
    {
        var response = await _httpClient.PutAsJsonAsync("/api/v1/views", updateDto);
        if (!response.IsSuccessStatusCode)
            return null;
        return await response.Content.ReadFromJsonAsync<TaskViewDto>();
    }

    public async Task<bool> DeleteViewAsync(string id)
    {
        var response = await _httpClient.DeleteAsync($"/api/v1/views/{id}");
        return response.IsSuccessStatusCode;
    }

    public async Task<List<TodoItemDto>> GetTasksByViewAsync(string viewId)
    {
        var response = await _httpClient.GetFromJsonAsync<List<TodoItemDto>>($"/api/v1/views/{viewId}/tasks");
        return response ?? new List<TodoItemDto>();
    }

    public async Task<TodoItemDto> CreateTodoWithViewCriteriaAsync(string viewId, CreateTodoItemDto createDto)
    {
        var response = await _httpClient.PostAsJsonAsync($"/api/v1/views/{viewId}/tasks", createDto);
        response.EnsureSuccessStatusCode();
        return await response.Content.ReadFromJsonAsync<TodoItemDto>() ?? throw new Exception("Failed to create task");
    }
}