package main

import (
	"context"
	"encoding/json"
	"errors"
	"sparrow/pkg/productconfig"
	"sparrow/pkg/rpcs"
	"strings"

	"github.com/gogf/gf/encoding/gjson"
	"github.com/opentracing/opentracing-go/ext"

	"github.com/opentracing/opentracing-go"

	"net/http"

	"sparrow/pkg/models"
	"sparrow/pkg/server"

	"github.com/go-martini/martini"
	"github.com/martini-contrib/render"
)

const (
	ErrOK                 = 0
	ErrSystemFault        = 10001
	ErrProductNotFound    = 10002
	ErrDeviceNotFound     = 10003
	ErrDeviceNotOnline    = 10004
	ErrWrongRequestFormat = 10005
	ErrWrongProductConfig = 10006
	ErrWrongQueryFormat   = 10007
	ErrAccessDenied       = 10008
	ErrIllegalityAction   = 10009 //非法操作
	ErrWrongSecret        = 10010 //
)

var (
	// ErrBadRequestString 参数不全错误
	errBadRequestString = errors.New("请求参数不全")
	errIllegalityString = errors.New("非法操作")
)

const (
	defaultTimeOut = 0 // seconds
)

func renderError(code int, err error) Common {
	result := Common{}
	result.Code = code
	result.Message = err.Error()
	server.Log.Error(err.Error())
	return result
}

func done(result interface{}) Common {
	return Common{
		Code:    ErrOK,
		Message: "success",
		Result:  result,
	}
}

// GetDeviceInfoByKey get device info with device key
func GetDeviceInfoByKey(params martini.Params, req *http.Request, r render.Render) {
	key := req.URL.Query().Get("device_key")
	server.Log.Printf("ACTION GetDeviceInfoByKey, key:: %v", key)
	device := &models.Device{}
	span, ctx := opentracing.StartSpanFromContext(context.Background(), "GetDeviceInfoByKey")
	defer span.Finish()
	ext.SpanKindRPCClient.Set(span)
	span.SetTag("device_key", key)
	err := server.RPCCallByName(ctx, rpcs.RegistryServerName, "Registry.ValidateDevice", key, device)
	if err != nil {
		r.JSON(http.StatusOK, renderError(ErrDeviceNotFound, err))
		return
	}

	result := DeviceInfoResponse{
		Data: DeviceInfoData{
			Identifier:  device.DeviceIdentifier,
			Name:        device.DeviceName,
			Description: device.DeviceDescription,
			Version:     device.DeviceVersion,
		},
	}
	r.JSON(http.StatusOK, result)
	return
}

// GetDeviceInfoByIdentifier get device info with device identifier
func GetDeviceInfoByIdentifier(urlparams martini.Params, r render.Render) {
	identifier := urlparams["identifier"]
	server.Log.Printf("ACTION GetDeviceInfoByIdentifier, identifier:: %v", identifier)
	device := &models.Device{}

	err := server.RPCCallByName(context.Background(), rpcs.RegistryServerName, "Registry.FindDeviceByIdentifier2", identifier, device)
	if err != nil {
		r.JSON(http.StatusOK, renderError(ErrDeviceNotFound, err))
		return
	}

	result := DeviceInfoResponse{
		Data: DeviceInfoData{
			Identifier:  device.DeviceIdentifier,
			Name:        device.DeviceName,
			Description: device.DeviceDescription,
			Version:     device.DeviceVersion,
		},
	}
	r.JSON(http.StatusOK, result)
	return
}

func GetDeviceCurrentStatus(device *models.Device, config *productconfig.ProductConfig,
	urlparams martini.Params, r render.Render) {
	server.Log.Printf("ACTION GetDeviceCurrentStatus, identifier:: %v", device.DeviceIdentifier)

	// 1. 触发设备上报状态（下发指令，不等待返回）
	triggerArgs := rpcs.ArgsGetStatus{Id: device.DeviceIdentifier}
	triggerReply := rpcs.ReplyGetStatus{}
	err := server.RPCCallByName(context.Background(), rpcs.ControllerName, "Controller.GetStatus", triggerArgs, &triggerReply)
	if err != nil {
		server.Log.Errorf("trigger device status error: %v", err)
	}

	// 2. 从 DeviceManager 获取实际存储的状态数据
	args := rpcs.ArgsGetStatus{Id: device.DeviceIdentifier}
	reply := rpcs.ReplyStatus{}
	err = server.RPCCallByName(nil, rpcs.DeviceManagerName, "DeviceManager.GetDeviceStatus", args, &reply)
	if err != nil {
		server.Log.Errorf("获取设备状态数据失败: %v", err)
		r.JSON(http.StatusOK, renderError(ErrSystemFault, err))
		return
	}

	if reply.Status == "" {
		r.JSON(http.StatusOK, DeviceStatusResponse{Data: map[string]interface{}{}})
		return
	}

	// 3. 解析 JSON 字符串
	var status map[string]interface{}
	if err := json.Unmarshal([]byte(reply.Status), &status); err != nil {
		server.Log.Errorf("解析设备状态数据失败: %v", err)
		r.JSON(http.StatusOK, renderError(ErrSystemFault, err))
		return
	}

	r.JSON(http.StatusOK, DeviceStatusResponse{Data: status})
	return
}

func GetDeviceStatusByFields(device *models.Device, config *productconfig.ProductConfig,
	urlparams martini.Params, req *http.Request, r render.Render) {
	server.Log.Printf("ACTION GetDeviceStatusByFields, identifier:: %v", device.DeviceIdentifier)

	fieldsParam := req.URL.Query().Get("fields")
	if fieldsParam == "" {
		r.JSON(http.StatusOK, renderError(ErrWrongQueryFormat, errBadRequestString))
		return
	}
	requestFields := strings.Split(fieldsParam, ",")

	// 触发设备上报状态
	triggerArgs := rpcs.ArgsGetStatus{Id: device.DeviceIdentifier}
	triggerReply := rpcs.ReplyGetStatus{}
	err := server.RPCCallByName(context.Background(), rpcs.ControllerName, "Controller.GetStatus", triggerArgs, &triggerReply)
	if err != nil {
		server.Log.Errorf("trigger device status error: %v", err)
	}

	// 从 DeviceManager 获取实际存储的状态数据
	args := rpcs.ArgsGetStatus{Id: device.DeviceIdentifier}
	reply := rpcs.ReplyStatus{}
	err = server.RPCCallByName(nil, rpcs.DeviceManagerName, "DeviceManager.GetDeviceStatus", args, &reply)
	if err != nil {
		server.Log.Errorf("获取设备状态数据失败: %v", err)
		r.JSON(http.StatusOK, renderError(ErrSystemFault, err))
		return
	}

	if reply.Status == "" {
		r.JSON(http.StatusOK, DeviceStatusFieldResponse{Data: map[string]interface{}{}})
		return
	}

	// 解析 JSON 字符串
	var status map[string]interface{}
	if err := json.Unmarshal([]byte(reply.Status), &status); err != nil {
		server.Log.Errorf("解析设备状态数据失败: %v", err)
		r.JSON(http.StatusOK, renderError(ErrSystemFault, err))
		return
	}
	server.Log.Debugf("GetDeviceStatusByFields status keys: %v", func() []string {
		keys := make([]string, 0, len(status))
		for k := range status {
			keys = append(keys, k)
		}
		return keys
	}())

	// 按指定字段过滤
	filtered := make(map[string]interface{})
	for _, field := range requestFields {
		if val, ok := status[field]; ok {
			filtered[field] = val
		}
	}

	r.JSON(http.StatusOK, DeviceStatusFieldResponse{Data: filtered})
	return
}

// GetDeviceLatestStatus 获取设备最新状态（直接查询，不触发上报）
func GetDeviceLatestStatus(device *models.Device, config *productconfig.ProductConfig,
	urlparams martini.Params, r render.Render) {
	server.Log.Printf("ACTION GetDeviceLatestStatus, identifier:: %v", device.DeviceIdentifier)

	// 直接从 DeviceManager 获取存储的状态数据
	args := rpcs.ArgsGetStatus{Id: device.DeviceIdentifier}
	reply := rpcs.ReplyStatus{}
	err := server.RPCCallByName(nil, rpcs.DeviceManagerName, "DeviceManager.GetDeviceStatus", args, &reply)
	if err != nil {
		server.Log.Errorf("获取设备状态数据失败: %v", err)
		r.JSON(http.StatusOK, renderError(ErrSystemFault, err))
		return
	}

	if reply.Status == "" {
		r.JSON(http.StatusOK, DeviceStatusResponse{Data: map[string]interface{}{}})
		return
	}

	var status map[string]interface{}
	if err := json.Unmarshal([]byte(reply.Status), &status); err != nil {
		server.Log.Errorf("解析设备状态数据失败: %v", err)
		r.JSON(http.StatusOK, renderError(ErrSystemFault, err))
		return
	}

	r.JSON(http.StatusOK, DeviceStatusResponse{Data: status})
	return
}

// DeviceUpgrade 设备OTA升级
func DeviceUpgrade(device *models.Device, urlparams martini.Params, req *http.Request, r render.Render) {
	var param DeviceUpgradeReq
	decoder := json.NewDecoder(req.Body)
	err := decoder.Decode(&param)
	if err != nil {
		r.JSON(http.StatusOK, renderError(ErrWrongRequestFormat, err))
		return
	}
	server.Log.Infof("设备OTA升级：%s, %s", param.DeviceId, param.Version)
	//var args rpcs.ArgsDeviceUpgrade
	//args.DeviceId = param.DeviceId
	//args.SudDeviceId = param.SubDeviceId
	//args.Url = param.Url
	//args.Md5 = param.MD5
	//args.Version = param.Version
	//args.FileSize = param.FileSize
	var reply rpcs.ReplyEmptyResult

	args := rpcs.ArgsSendCommand{
		DeviceId:  param.DeviceId,
		SubDevice: param.SubDeviceId,
		Cmd:       "devUpgrade",
		Params: map[string]interface{}{
			"md5":       param.MD5,
			"url":       param.Url,
			"version":   param.Version,
			"file_size": param.FileSize,
		},
	}
	err = server.RPCCallByName(nil, rpcs.ControllerName, "Controller.SendCommand", args, &reply)

	//err = server.RPCCallByName(context.Background(), rpcs.MQTTAccessName, "Access.Upgrade", args, &reply)
	if err != nil {
		server.Log.Errorf("设备OTA升级失败：", err)
		r.JSON(http.StatusOK, renderError(ErrSystemFault, err))
		return
	}
	r.JSON(http.StatusOK, Common{})
	return
}

// SetDeviceStatus set device status
func SetDeviceStatus(device *models.Device, config *productconfig.ProductConfig,
	urlparams martini.Params, req *http.Request, r render.Render) {
	server.Log.Printf("ACTION GetDeviceCurrentStatus, identifier:: %v,request: %v", device.DeviceIdentifier, req.Body)

	var args interface{}
	decoder := json.NewDecoder(req.Body)
	err := decoder.Decode(&args)
	if err != nil {
		r.JSON(http.StatusOK, renderError(ErrWrongRequestFormat, err))
		return
	}

	m, ok := args.(map[string]interface{})
	if !ok {
		r.JSON(http.StatusOK, renderError(ErrWrongRequestFormat, err))
		return
	}

	status, err := config.MapToStatus(m)
	if err != nil {
		r.JSON(http.StatusOK, renderError(ErrWrongRequestFormat, err))
		return
	}

	statusargs := rpcs.ArgsSetStatus{
		DeviceId: device.RecordId,
		Status:   status,
	}
	statusreply := rpcs.ReplySetStatus{}
	//opentracing
	span, ctx := opentracing.StartSpanFromContext(context.Background(), "SetDeviceStatus")
	defer span.Finish()
	ext.SpanKindRPCClient.Set(span)

	err = server.RPCCallByName(ctx, rpcs.ControllerName, "Controller.SetStatus", statusargs, &statusreply)
	if err != nil {
		server.Log.Errorf("set devie status error: %v", err)
		r.JSON(http.StatusOK, renderError(ErrSystemFault, err))
		return
	}

	r.JSON(http.StatusOK, Common{})
	return

}

// SendCommandToDevice send command to device
/*
{
    "deviceCode": "5566",
    "subDeviceId": "1",
    "data": {
        "cmd": "powerControl",
        "params": {
            "power": 1,
            "temp":2
        }
    }
}

*/
func SendCommandToDevice(device *models.Device, config *productconfig.ProductConfig,
	urlparams martini.Params, req *http.Request, r render.Render) {
	timeout := req.URL.Query().Get("timeout")

	server.Log.Printf("ACTION SendCommandToDevice, identifier:: %v, request: %v, timeout: %v",
		device.DeviceIdentifier, req.Body, timeout)

	var args map[string]interface{}
	decoder := json.NewDecoder(req.Body)
	err := decoder.Decode(&args)
	if err != nil {
		r.JSON(http.StatusOK, renderError(ErrWrongRequestFormat, err))
		return
	}

	j := gjson.New(args)
	cmdargs := rpcs.ArgsSendCommand{
		DeviceId:  device.DeviceIdentifier,
		SubDevice: j.GetString("subDeviceId"),
		WaitTime:  uint32(defaultTimeOut),
		Params:    j.GetMap("data.params"),
		Cmd:       j.GetString("data.cmd"),
	}
	cmdreply := rpcs.ReplySendCommand{}

	err = server.RPCCallByName(context.Background(), rpcs.ControllerName, "Controller.SendCommand", cmdargs, &cmdreply)
	if err != nil {
		server.Log.Errorf("send devie command error: %v", err)
		r.JSON(http.StatusOK, renderError(ErrSystemFault, err))
		return
	}

	r.JSON(http.StatusOK, Common{})
	return

}

func SendCommandToDeviceV2(device *models.Device, config *productconfig.ProductConfig,
	urlparams martini.Params, req *http.Request, r render.Render) {
	timeout := req.URL.Query().Get("timeout")

	server.Log.Printf("ACTION SendCommandToDevice, identifier:: %v, request: %v, timeout: %v",
		device.DeviceIdentifier, req.Body, timeout)

	var args map[string]interface{}
	decoder := json.NewDecoder(req.Body)
	err := decoder.Decode(&args)
	if err != nil {
		r.JSON(http.StatusOK, renderError(ErrWrongRequestFormat, err))
		return
	}

	j := gjson.New(args)
	cmdargs := rpcs.ArgsSendCommand{
		DeviceId:  device.DeviceIdentifier,
		SubDevice: j.GetString("subDeviceId"),
		WaitTime:  uint32(defaultTimeOut),
		Params:    j.GetMap("data.params"),
		Cmd:       j.GetString("data.cmd"),
	}
	cmdreply := rpcs.ReplySendCommand{}

	err = server.RPCCallByName(context.Background(), rpcs.ControllerName, "Controller.SendCommandV2", cmdargs, &cmdreply)
	if err != nil {
		server.Log.Errorf("send devie command error: %v", err)
		r.JSON(http.StatusOK, renderError(ErrSystemFault, err))
		return
	}

	r.JSON(http.StatusOK, Common{})
	return

}

// AddRule 增加设备规则
func AddRule(device *models.Device, req *http.Request, r render.Render) {
	var ruleReq CreateRuleRequest
	decoder := json.NewDecoder(req.Body)
	err := decoder.Decode(&ruleReq)
	if err != nil {
		r.JSON(http.StatusOK, renderError(ErrWrongRequestFormat, err))
		return
	}

	rule := &models.Rule{
		DeviceID: device.RecordId,
		RuleType: ruleReq.Type,
		Trigger:  ruleReq.Trigger,
		Target:   ruleReq.Target,
		Action:   ruleReq.Action,
	}
	reply := &rpcs.ReplyEmptyResult{}
	//opentracing
	span, ctx := opentracing.StartSpanFromContext(context.Background(), "AddRule")
	defer span.Finish()
	ext.SpanKindRPCClient.Set(span)

	err = server.RPCCallByName(ctx, rpcs.RegistryServerName, "Registry.CreateRule", rule, reply)
	if err != nil {
		server.Log.Errorf("create device rule error: %v", err)
		r.JSON(http.StatusOK, renderError(ErrSystemFault, err))
		return
	}

	r.JSON(http.StatusOK, Common{})
	return

}

func AppAuth(req *http.Request, r render.Render) {

	var ruleReq rpcs.ArgsAppAuth
	decoder := json.NewDecoder(req.Body)
	err := decoder.Decode(&ruleReq)
	if err != nil {
		r.JSON(http.StatusOK, renderError(ErrWrongRequestFormat, err))
		return
	}

	app := &models.Application{}

	err = server.RPCCallByName(nil, rpcs.RegistryServerName, "Registry.FindApplicationByAppKey", ruleReq, app)
	if err != nil {

		r.JSON(http.StatusOK, renderError(ErrWrongSecret, errors.New("invalid secret key")))
		return
	}

	if app.SecretKey != ruleReq.Secretkey {
		// device secret is wrong.
		r.JSON(http.StatusOK, renderError(ErrWrongSecret, errors.New("wrong application secret")))
		return
	}
	token, timeSnap := TokenMaker(app)
	result := AppAuthDataResponse{
		AccessToken: token,
		ExpireAt:    timeSnap,
	}

	r.JSON(http.StatusOK, Common{
		Result: result,
	})
	return
}

func CheckDeviceNetConfig(req *http.Request, r render.Render) {
	var params rpcs.ArgsCheckDeviceNetConfig
	params.DeviceCode = req.URL.Query().Get("device_code")
	params.Md5 = req.URL.Query().Get("md5")
	var reply rpcs.ReplyCheckDeviceNetConfig
	err := server.RPCCallByName(nil, rpcs.RegistryServerName, "Registry.CheckDeviceNetConfig", &params, &reply)
	if err != nil {
		r.JSON(http.StatusOK, renderError(ErrSystemFault, err))
		return
	}
	r.JSON(http.StatusOK, Common{
		Result: reply.Result,
	})
}

func CheckDeviceIsOnline(req *http.Request, r render.Render) {

	identifier := req.URL.Query().Get("device_code")
	device := &models.Device{}
	err := server.RPCCallByName(nil, rpcs.RegistryServerName, "Registry.FindDeviceByIdentifier", identifier, device)
	if err != nil {
		r.JSON(http.StatusOK, renderError(ErrDeviceNotFound, err))
		return
	}

	onlineargs := rpcs.ArgsGetDeviceOnlineStatus{
		Id: device.DeviceIdentifier,
	}
	onlinereply := rpcs.ReplyGetDeviceOnlineStatus{}

	err = server.RPCCallByName(nil, rpcs.DeviceManagerName, "DeviceManager.GetDeviceOnlineStatus", onlineargs, &onlinereply)
	if err != nil || onlinereply.ClientIP == "" {
		r.JSON(http.StatusOK, Common{
			Result: 2,
		})
	}
	r.JSON(http.StatusOK, Common{
		Result: 1,
	})
}

func SubmitSceneTask(req *http.Request, r render.Render) {

	var ruleReq rpcs.ArgsSubmitTask
	decoder := json.NewDecoder(req.Body)
	err := decoder.Decode(&ruleReq)
	if err != nil {
		r.JSON(http.StatusOK, renderError(ErrWrongRequestFormat, err))
		return
	}
	reply := rpcs.ReplySubmitTask{}
	server.Log.Debugf("submit sceneTask %v", ruleReq)
	err = server.RPCCallByName(nil, rpcs.SceneAccessServiceName, "SceneService.SubmitTask", ruleReq, &reply)
	if err != nil {
		server.Log.Errorf("submit sceneTask error: %v", err)
		r.JSON(http.StatusOK, renderError(ErrSystemFault, err))
		return
	}
	r.JSON(http.StatusOK, Common{})
	return
}

func SubmitTaskLifecycle(req *http.Request, r render.Render) {

	var ruleReq rpcs.ArgsSubmitTaskLifecycle
	decoder := json.NewDecoder(req.Body)
	err := decoder.Decode(&ruleReq)
	if err != nil {
		r.JSON(http.StatusOK, renderError(ErrWrongRequestFormat, err))
		return
	}
	reply := rpcs.ReplySubmitTask{}
	err = server.RPCCallByName(nil, rpcs.SceneAccessServiceName, "SceneService.SubmitTaskLifecycle", ruleReq, &reply)
	if err != nil {
		r.JSON(http.StatusOK, renderError(ErrWrongSecret, errors.New("invalid secret key")))
		server.Log.Errorf("submit taskLifecycle error: %v", err)
		r.JSON(http.StatusOK, renderError(ErrSystemFault, err))
		return
	}
	r.JSON(http.StatusOK, Common{})
	return
}

func SubmitSceneAction(req *http.Request, r render.Render) {

	var ruleReq rpcs.ArgsSubmitSceneAction
	decoder := json.NewDecoder(req.Body)
	err := decoder.Decode(&ruleReq)
	if err != nil {
		r.JSON(http.StatusOK, renderError(ErrWrongRequestFormat, err))
		return
	}
	reply := rpcs.ReplySubmitSceneAction{}
	err = server.RPCCallByName(nil, rpcs.SceneServiceName, "SceneService.SubmitAction", ruleReq, &reply)
	if err != nil {
		r.JSON(http.StatusOK, renderError(ErrWrongSecret, errors.New("invalid secret key")))
		server.Log.Errorf("submit scene-manager error: %v", err)
		r.JSON(http.StatusOK, renderError(ErrSystemFault, err))
		return
	}
	r.JSON(http.StatusOK, Common{})
	return
}