Integration1/Controllers/TasksV1Controller.cs - lab4 - ArtSerg/IntegrationProject

Integration1/Controllers/TasksV1Controller.cs
112 строк4 KB
artS3rg
Добавлена Лабораторная №2: лимиты, пагинация, опциональные поля, внутренний API, Swagger обновлен
25 окт 2025, 10:49
25 окт 2025, 10:49d03a63c
using Integration1.Data;
using Integration1.Dtos;
using Integration1.Models;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using System.Security.Claims;
using Microsoft.EntityFrameworkCore;

namespace Integration1.Controllers
{
    [ApiController]
    [Route("api/v1/tasks")]
    [Authorize]
    public class TasksV1Controller : ControllerBase
    {
        private readonly AppDbContext _db;

        public TasksV1Controller(AppDbContext db) => _db = db;

        private string GetUserId() => User.FindFirst("UserId")?.Value ?? "";

        [HttpGet]
        public async Task<IActionResult> GetTasks([FromQuery] int page = 1, [FromQuery] int pageSize = 10, [FromQuery] string? include = null)
        {
            if (page < 1) page = 1;
            if (pageSize < 1) pageSize = 10;
            if (pageSize > 100) pageSize = 100;

            var userId = GetUserId();

            var q = _db.Tasks.Where(t => t.UserId == userId).AsNoTracking();

            var total = await q.CountAsync();
            var totalPages = (int)Math.Ceiling(total / (double)pageSize);

            var items = await q
                .OrderBy(t => t.Id)
                .Skip((page - 1) * pageSize)
                .Take(pageSize)
                .ToListAsync();

            var projection = ProjectTasks(items, include);

            Response.Headers["X-Total-Count"] = total.ToString();
            Response.Headers["X-Total-Pages"] = totalPages.ToString();
            Response.Headers["X-Current-Page"] = page.ToString();

            return Ok(new PagedResult<object> { Items = projection, TotalCount = total, Page = page, PageSize = pageSize });
        }

        [HttpPost]
        public async Task<IActionResult> CreateTask([FromBody] TaskCreateDto dto)
        {
            var task = new TaskItem
            {
                Title = dto.Title,
                Description = dto.Description,
                Priority = dto.Priority,
                UserId = GetUserId()
            };
            _db.Tasks.Add(task);
            await _db.SaveChangesAsync();
            return CreatedAtAction(nameof(GetTasks), new { id = task.Id }, task);
        }

        [HttpPut("{id}")]
        public async Task<IActionResult> UpdateTask(int id, [FromBody] TaskUpdateDto dto)
        {
            var task = await _db.Tasks.FindAsync(id);
            if (task == null) return NotFound();

            if (dto.Title != null) task.Title = dto.Title;
            if (dto.Description != null) task.Description = dto.Description;
            if (dto.Priority.HasValue) task.Priority = dto.Priority.Value;
            if (dto.IsCompleted.HasValue) task.IsCompleted = dto.IsCompleted.Value;

            await _db.SaveChangesAsync();
            return Ok(task);
        }

        [HttpDelete("{id}")]
        public async Task<IActionResult> DeleteTask(int id)
        {
            var task = await _db.Tasks.FindAsync(id);
            if (task == null) return NotFound();
            _db.Tasks.Remove(task);
            await _db.SaveChangesAsync();
            return NoContent();
        }

        private IEnumerable<object> ProjectTasks(IEnumerable<TaskItem> tasks, string? include)
        {
            var fields = (include ?? "").Split(',', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries)
                        .Select(f => f.ToLowerInvariant()).ToHashSet();

            bool all = !fields.Any();

            foreach (var t in tasks)
            {
                var dict = new Dictionary<string, object?>();

                if (all || fields.Contains("id")) dict["id"] = t.Id;
                if (all || fields.Contains("title")) dict["title"] = t.Title;
                if (all || fields.Contains("description")) dict["description"] = t.Description;
                if (all || fields.Contains("priority")) dict["priority"] = t.Priority.ToString();
                if (all || fields.Contains("iscompleted")) dict["isCompleted"] = t.IsCompleted;
                if (all || fields.Contains("userid")) dict["userId"] = t.UserId;
                yield return dict;
            }
        }
    }
}