task_track/backend/internal/handler/task/add_task_comment.go

package task

import (
	"net/http"
	"strconv"
	"time"

	"task-track-backend/model"
	"task-track-backend/pkg/database"

	"github.com/gin-gonic/gin"
)

// AddTaskCommentRequest 添加任务评论请求结构
type AddTaskCommentRequest struct {
	Content string `json:"content" binding:"required"`
	UserID  uint   `json:"user_id" binding:"required"`
}

func (h *TaskHandler) AddTaskComment(c *gin.Context) {
	// 获取任务ID
	taskIDStr := c.Param("id")
	taskID, err := strconv.ParseUint(taskIDStr, 10, 32)
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "无效的任务ID"})
		return
	}

	var req AddTaskCommentRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}

	db := database.GetDB()

	// 检查任务是否存在
	var existingTask model.Task
	if err := db.First(&existingTask, uint(taskID)).Error; err != nil {
		if err.Error() == "record not found" {
			c.JSON(http.StatusNotFound, gin.H{"error": "任务不存在"})
			return
		}
		c.JSON(http.StatusInternalServerError, gin.H{"error": "查询任务失败"})
		return
	}

	// 检查用户是否存在
	var user model.User
	if err := db.First(&user, req.UserID).Error; err != nil {
		if err.Error() == "record not found" {
			c.JSON(http.StatusNotFound, gin.H{"error": "用户不存在"})
			return
		}
		c.JSON(http.StatusInternalServerError, gin.H{"error": "查询用户失败"})
		return
	}

	// 创建评论
	comment := model.TaskComment{
		TaskID:    uint(taskID),
		UserID:    req.UserID,
		Content:   req.Content,
		CreatedAt: time.Now(),
	}

	if err := db.Create(&comment).Error; err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": "创建评论失败"})
		return
	}

	// 预加载用户信息
	if err := db.Preload("User").First(&comment, comment.ID).Error; err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": "获取评论失败"})
		return
	}

	c.JSON(http.StatusCreated, comment)
}