using Microsoft.AspNetCore.Mvc;
using MyHomePage.Api.Common;
using MyHomePage.Api.Models.Dtos;
using MyHomePage.Api.Services;

namespace MyHomePage.Api.Controllers;

/// <summary>分类管理：支持二级树形结构。</summary>
[ApiController]
[Route("api/categories")]
public class CategoriesController : ControllerBase
{
    private readonly ICategoryService _service;

    public CategoriesController(ICategoryService service) => _service = service;

    /// <summary>获取全量分类（树形）</summary>
    [HttpGet]
    public async Task<ApiResponse<List<CategoryDto>>> GetTree() =>
        await ApiResponse<List<CategoryDto>>.OkListAsync(_service.GetTreeAsync());

    /// <summary>根据 ID 获取分类</summary>
    [HttpGet("{id:int}")]
    public async Task<ApiResponse<CategoryDto>> GetById(int id)
    {
        var dto = await _service.GetByIdAsync(id)
            ?? throw new BusinessException("分类不存在", 404);
        return ApiResponse<CategoryDto>.Ok(dto);
    }

    /// <summary>创建分类</summary>
    [HttpPost]
    public async Task<ApiResponse<CategoryDto>> Create([FromBody] CategoryUpsertRequest request) =>
        ApiResponse<CategoryDto>.Ok(await _service.CreateAsync(request));

    /// <summary>更新分类</summary>
    [HttpPut("{id:int}")]
    public async Task<ApiResponse<CategoryDto>> Update(int id, [FromBody] CategoryUpsertRequest request) =>
        ApiResponse<CategoryDto>.Ok(await _service.UpdateAsync(id, request));

    /// <summary>删除分类</summary>
    [HttpDelete("{id:int}")]
    public async Task<ApiResponse> Delete(int id)
    {
        await _service.DeleteAsync(id);
        return ApiResponse.Ok();
    }
}