// Package operation 提供操作历史相关功能的控制器
// 实现操作历史记录、查询等操作
package operation

import (
	"net/http"
	"strconv"

	"git.huangwc.com/pig/pig-farm-controller/internal/api/middleware"
	"git.huangwc.com/pig/pig-farm-controller/internal/logs"
	"git.huangwc.com/pig/pig-farm-controller/internal/model"
	"git.huangwc.com/pig/pig-farm-controller/internal/storage/repository"
	"github.com/gin-gonic/gin"
)

// Controller 操作历史控制器
type Controller struct {
	operationHistoryRepo repository.OperationHistoryRepo
	logger               *logs.Logger
}

// NewController 创建操作历史控制器实例
func NewController(operationHistoryRepo repository.OperationHistoryRepo) *Controller {
	return &Controller{
		operationHistoryRepo: operationHistoryRepo,
		logger:               logs.NewLogger(),
	}
}

// CreateRequest 创建操作历史请求结构体
type CreateRequest struct {
	Action     string `json:"action" binding:"required"`
	Target     string `json:"target"`
	Parameters string `json:"parameters"`
	Status     string `json:"status" binding:"required"`
	Result     string `json:"result"`
}

// Create 创建操作历史记录
func (c *Controller) Create(ctx *gin.Context) {
	// 从上下文中获取用户信息
	userValue, exists := ctx.Get("user")
	if !exists {
		ctx.JSON(http.StatusUnauthorized, gin.H{"error": "无法获取用户信息"})
		return
	}

	user, ok := userValue.(*middleware.AuthUser)
	if !ok {
		ctx.JSON(http.StatusInternalServerError, gin.H{"error": "用户信息格式错误"})
		return
	}

	var req CreateRequest
	if err := ctx.ShouldBindJSON(&req); err != nil {
		ctx.JSON(http.StatusBadRequest, gin.H{"error": "请求参数错误"})
		return
	}

	// 创建操作历史记录
	history := &model.OperationHistory{
		UserID:     user.ID,
		Action:     req.Action,
		Target:     req.Target,
		Parameters: req.Parameters,
		Status:     req.Status,
		Result:     req.Result,
	}

	if err := c.operationHistoryRepo.Create(history); err != nil {
		c.logger.Error("创建操作历史记录失败: " + err.Error())
		ctx.JSON(http.StatusInternalServerError, gin.H{"error": "创建操作历史记录失败"})
		return
	}

	ctx.JSON(http.StatusOK, gin.H{
		"message": "操作历史记录创建成功",
		"data": map[string]interface{}{
			"id":         history.ID,
			"action":     history.Action,
			"target":     history.Target,
			"parameters": history.Parameters,
			"status":     history.Status,
			"result":     history.Result,
			"created_at": history.CreatedAt,
		},
	})
}

// ListByUserRequest 按用户查询操作历史请求结构体
type ListByUserRequest struct {
	Page  int `form:"page" binding:"required"`
	Limit int `form:"limit" binding:"required"`
}

// ListByUser 获取当前用户的所有操作历史记录
func (c *Controller) ListByUser(ctx *gin.Context) {
	// 从上下文中获取用户信息
	userValue, exists := ctx.Get("user")
	if !exists {
		ctx.JSON(http.StatusUnauthorized, gin.H{"error": "无法获取用户信息"})
		return
	}

	user, ok := userValue.(*middleware.AuthUser)
	if !ok {
		ctx.JSON(http.StatusInternalServerError, gin.H{"error": "用户信息格式错误"})
		return
	}

	// 解析查询参数
	var req ListByUserRequest
	if err := ctx.ShouldBindQuery(&req); err != nil {
		ctx.JSON(http.StatusBadRequest, gin.H{"error": "查询参数错误"})
		return
	}

	if req.Page <= 0 {
		req.Page = 1
	}

	if req.Limit <= 0 || req.Limit > 100 {
		req.Limit = 10
	}

	// 计算偏移量
	offset := (req.Page - 1) * req.Limit

	// 查询用户操作历史记录
	histories, err := c.operationHistoryRepo.FindByUserID(user.ID)
	if err != nil {
		c.logger.Error("查询操作历史记录失败: " + err.Error())
		ctx.JSON(http.StatusInternalServerError, gin.H{"error": "查询操作历史记录失败"})
		return
	}

	// 分页处理
	start := offset
	end := start + req.Limit
	if start > len(histories) {
		start = len(histories)
	}
	if end > len(histories) {
		end = len(histories)
	}

	pagedHistories := histories[start:end]

	ctx.JSON(http.StatusOK, gin.H{
		"message": "查询成功",
		"data": map[string]interface{}{
			"histories": pagedHistories,
			"page":      req.Page,
			"limit":     req.Limit,
			"total":     len(histories),
		},
	})
}

// GetRequest 获取单个操作历史记录请求结构体
type GetRequest struct {
	ID string `uri:"id" binding:"required"`
}

// Get 获取单个操作历史记录
func (c *Controller) Get(ctx *gin.Context) {
	// 从上下文中获取用户信息
	userValue, exists := ctx.Get("user")
	if !exists {
		ctx.JSON(http.StatusUnauthorized, gin.H{"error": "无法获取用户信息"})
		return
	}

	user, ok := userValue.(*middleware.AuthUser)
	if !ok {
		ctx.JSON(http.StatusInternalServerError, gin.H{"error": "用户信息格式错误"})
		return
	}

	// 解析路径参数
	var req GetRequest
	if err := ctx.ShouldBindUri(&req); err != nil {
		ctx.JSON(http.StatusBadRequest, gin.H{"error": "路径参数错误"})
		return
	}

	// 将ID转换为整数
	id, err := strconv.ParseUint(req.ID, 10, 32)
	if err != nil {
		ctx.JSON(http.StatusBadRequest, gin.H{"error": "ID格式错误"})
		return
	}

	// 查询操作历史记录
	history, err := c.operationHistoryRepo.FindByID(uint(id))
	if err != nil {
		c.logger.Error("查询操作历史记录失败: " + err.Error())
		ctx.JSON(http.StatusNotFound, gin.H{"error": "操作历史记录不存在"})
		return
	}

	// 检查是否是当前用户的记录
	if history.UserID != user.ID {
		ctx.JSON(http.StatusForbidden, gin.H{"error": "无权访问该记录"})
		return
	}

	ctx.JSON(http.StatusOK, gin.H{
		"message": "查询成功",
		"data":    history,
	})
}