package main

import (
	"net/http"
	"time"

	"github.com/gin-gonic/gin"
	"github.com/google/uuid"
	"github.com/sirupsen/logrus"
)

// CameraRequest 摄像头请求结构
type CameraRequest struct {
	Name     string `json:"name" binding:"required"`
	IP       string `json:"ip" binding:"required"`
	Username string `json:"username"`
	Password string `json:"password"`
	RTSPURL  string `json:"rtsp_url" binding:"required"`
	Enabled  bool   `json:"enabled"`
}

// CameraResponse 摄像头响应结构
type CameraResponse struct {
	ID        string    `json:"id"`
	Name      string    `json:"name"`
	IP        string    `json:"ip"`
	Username  string    `json:"username"`
	Password  string    `json:"password,omitempty"` // 密码在响应中可选
	RTSPURL   string    `json:"rtsp_url"`
	Enabled   bool      `json:"enabled"`
	Status    string    `json:"status"`
	CreatedAt time.Time `json:"created_at"`
	UpdatedAt time.Time `json:"updated_at"`
}

// HTTPAPIServerCameras 获取所有摄像头列表
func HTTPAPIServerCameras(c *gin.Context) {
	if !Storage.Server.DatabaseEnabled {
		c.JSON(http.StatusServiceUnavailable, gin.H{
			"error": "Database is not enabled",
		})
		return
	}

	if Storage.dbManager == nil {
		c.JSON(http.StatusInternalServerError, gin.H{
			"error": "Database manager not initialized",
		})
		return
	}

	cameras, err := Storage.dbManager.GetAllCameras()
	if err != nil {
		log.WithFields(logrus.Fields{
			"module": "api",
			"func":   "HTTPAPIServerCameras",
			"call":   "GetAllCameras",
		}).Errorln(err.Error())
		c.JSON(http.StatusInternalServerError, gin.H{
			"error": err.Error(),
		})
		return
	}

	// 转换为响应格式
	var response []CameraResponse
	for _, camera := range cameras {
		status := "offline"
		if stream, exists := Storage.Streams[camera.ID]; exists {
			if len(stream.Channels) > 0 {
				for _, channel := range stream.Channels {
					if channel.runLock {
						status = "online"
						break
					}
				}
			}
		}

		response = append(response, CameraResponse{
			ID:       camera.ID,
			Name:     camera.Name,
			IP:       camera.IP,
			Username: camera.Username,
			// Password: camera.Password, // 不返回密码
			RTSPURL:   camera.RTSPURL,
			Enabled:   camera.Enabled,
			Status:    status,
			CreatedAt: camera.CreatedAt,
			UpdatedAt: camera.UpdatedAt,
		})
	}

	c.JSON(http.StatusOK, gin.H{
		"cameras": response,
		"count":   len(response),
	})
}

// HTTPAPIServerCameraAdd 添加新摄像头
func HTTPAPIServerCameraAdd(c *gin.Context) {
	if !Storage.Server.DatabaseEnabled {
		c.JSON(http.StatusServiceUnavailable, gin.H{
			"error": "Database is not enabled",
		})
		return
	}

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

	// 生成新的UUID
	cameraID := uuid.New().String()

	// 创建摄像头记录
	camera := Camera{
		ID:        cameraID,
		Name:      req.Name,
		IP:        req.IP,
		Username:  req.Username,
		Password:  req.Password,
		RTSPURL:   req.RTSPURL,
		Enabled:   req.Enabled,
		CreatedAt: time.Now(),
		UpdatedAt: time.Now(),
	}

	// 保存到数据库
	err := Storage.dbManager.CreateCamera(&camera)
	if err != nil {
		log.WithFields(logrus.Fields{
			"module": "api",
			"func":   "HTTPAPIServerCameraAdd",
			"call":   "CreateCamera",
		}).Errorln(err.Error())
		c.JSON(http.StatusInternalServerError, gin.H{
			"error": err.Error(),
		})
		return
	}

	// 转换为流配置并添加到内存
	stream := CameraToStream(camera)
	err = Storage.StreamAdd(cameraID, stream)
	if err != nil {
		log.WithFields(logrus.Fields{
			"module": "api",
			"func":   "HTTPAPIServerCameraAdd",
			"call":   "StreamAdd",
		}).Errorln(err.Error())
		c.JSON(http.StatusInternalServerError, gin.H{
			"error": err.Error(),
		})
		return
	}

	c.JSON(http.StatusCreated, gin.H{
		"message":   "Camera added successfully",
		"camera_id": cameraID,
	})
}

// HTTPAPIServerCameraUpdate 更新摄像头
func HTTPAPIServerCameraUpdate(c *gin.Context) {
	if !Storage.Server.DatabaseEnabled {
		c.JSON(http.StatusServiceUnavailable, gin.H{
			"error": "Database is not enabled",
		})
		return
	}

	cameraID := c.Param("uuid")
	if cameraID == "" {
		c.JSON(http.StatusBadRequest, gin.H{
			"error": "Camera ID is required",
		})
		return
	}

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

	// 检查摄像头是否存在
	existingCamera, err := Storage.dbManager.GetCameraByID(cameraID)
	if err != nil {
		log.WithFields(logrus.Fields{
			"module": "api",
			"func":   "HTTPAPIServerCameraUpdate",
			"call":   "GetCameraByID",
		}).Errorln(err.Error())
		c.JSON(http.StatusInternalServerError, gin.H{
			"error": err.Error(),
		})
		return
	}

	if existingCamera == nil {
		c.JSON(http.StatusNotFound, gin.H{
			"error": "Camera not found",
		})
		return
	}

	// 更新摄像头信息
	updatedCamera := Camera{
		ID:        cameraID,
		Name:      req.Name,
		IP:        req.IP,
		Username:  req.Username,
		Password:  req.Password,
		RTSPURL:   req.RTSPURL,
		Enabled:   req.Enabled,
		CreatedAt: existingCamera.CreatedAt,
		UpdatedAt: time.Now(),
	}

	// 更新数据库
	err = Storage.dbManager.UpdateCamera(&updatedCamera)
	if err != nil {
		log.WithFields(logrus.Fields{
			"module": "api",
			"func":   "HTTPAPIServerCameraUpdate",
			"call":   "UpdateCamera",
		}).Errorln(err.Error())
		c.JSON(http.StatusInternalServerError, gin.H{
			"error": err.Error(),
		})
		return
	}

	// 更新内存中的流配置
	stream := CameraToStream(updatedCamera)
	err = Storage.StreamEdit(cameraID, stream)
	if err != nil {
		log.WithFields(logrus.Fields{
			"module": "api",
			"func":   "HTTPAPIServerCameraUpdate",
			"call":   "StreamEdit",
		}).Errorln(err.Error())
		c.JSON(http.StatusInternalServerError, gin.H{
			"error": err.Error(),
		})
		return
	}

	c.JSON(http.StatusOK, gin.H{
		"message": "Camera updated successfully",
	})
}

// HTTPAPIServerCameraDelete 删除摄像头
func HTTPAPIServerCameraDelete(c *gin.Context) {
	if !Storage.Server.DatabaseEnabled {
		c.JSON(http.StatusServiceUnavailable, gin.H{
			"error": "Database is not enabled",
		})
		return
	}

	cameraID := c.Param("uuid")
	if cameraID == "" {
		c.JSON(http.StatusBadRequest, gin.H{
			"error": "Camera ID is required",
		})
		return
	}

	// 检查摄像头是否存在
	existingCamera, err := Storage.dbManager.GetCameraByID(cameraID)
	if err != nil {
		log.WithFields(logrus.Fields{
			"module": "api",
			"func":   "HTTPAPIServerCameraDelete",
			"call":   "GetCameraByID",
		}).Errorln(err.Error())
		c.JSON(http.StatusInternalServerError, gin.H{
			"error": err.Error(),
		})
		return
	}

	if existingCamera == nil {
		c.JSON(http.StatusNotFound, gin.H{
			"error": "Camera not found",
		})
		return
	}

	// 从内存中删除流
	err = Storage.StreamDelete(cameraID)
	if err != nil {
		log.WithFields(logrus.Fields{
			"module": "api",
			"func":   "HTTPAPIServerCameraDelete",
			"call":   "StreamDelete",
		}).Errorln(err.Error())
		c.JSON(http.StatusInternalServerError, gin.H{
			"error": err.Error(),
		})
		return
	}

	c.JSON(http.StatusOK, gin.H{
		"message": "Camera deleted successfully",
	})
}

// HTTPAPIServerCameraGet 获取单个摄像头信息
func HTTPAPIServerCameraGet(c *gin.Context) {
	if !Storage.Server.DatabaseEnabled {
		c.JSON(http.StatusServiceUnavailable, gin.H{
			"error": "Database is not enabled",
		})
		return
	}

	cameraID := c.Param("uuid")
	if cameraID == "" {
		c.JSON(http.StatusBadRequest, gin.H{
			"error": "Camera ID is required",
		})
		return
	}

	camera, err := Storage.dbManager.GetCameraByID(cameraID)
	if err != nil {
		log.WithFields(logrus.Fields{
			"module": "api",
			"func":   "HTTPAPIServerCameraGet",
			"call":   "GetCameraByID",
		}).Errorln(err.Error())
		c.JSON(http.StatusInternalServerError, gin.H{
			"error": err.Error(),
		})
		return
	}

	if camera == nil {
		c.JSON(http.StatusNotFound, gin.H{
			"error": "Camera not found",
		})
		return
	}

	// 检查流状态
	status := "offline"
	if stream, exists := Storage.Streams[camera.ID]; exists {
		if len(stream.Channels) > 0 {
			for _, channel := range stream.Channels {
				if channel.runLock {
					status = "online"
					break
				}
			}
		}
	}

	response := CameraResponse{
		ID:       camera.ID,
		Name:     camera.Name,
		IP:       camera.IP,
		Username: camera.Username,
		// Password: camera.Password, // 不返回密码
		RTSPURL:   camera.RTSPURL,
		Enabled:   camera.Enabled,
		Status:    status,
		CreatedAt: camera.CreatedAt,
		UpdatedAt: camera.UpdatedAt,
	}

	c.JSON(http.StatusOK, response)
}

// HTTPAPIServerCameraRefresh 刷新摄像头列表（从数据库重新加载）
func HTTPAPIServerCameraRefresh(c *gin.Context) {
	if !Storage.Server.DatabaseEnabled {
		c.JSON(http.StatusServiceUnavailable, gin.H{
			"error": "Database is not enabled",
		})
		return
	}

	err := Storage.RefreshStreamsFromDatabase()
	if err != nil {
		log.WithFields(logrus.Fields{
			"module": "api",
			"func":   "HTTPAPIServerCameraRefresh",
			"call":   "RefreshStreamsFromDatabase",
		}).Errorln(err.Error())
		c.JSON(http.StatusInternalServerError, gin.H{
			"error": err.Error(),
		})
		return
	}

	c.JSON(http.StatusOK, gin.H{
		"message": "Cameras refreshed successfully",
	})
}

// HTTPAPIServerDatabaseStatus 获取数据库状态
func HTTPAPIServerDatabaseStatus(c *gin.Context) {
	status := Storage.GetDatabaseStatus()
	c.JSON(http.StatusOK, status)
}