package mysubaru

import (
	"encoding/json"
	"errors"
	"io"
	"log/slog"
	"slices"
	"sync"

	"git.savin.nyc/alex/mysubaru/config"
	"resty.dev/v3"
)

// Client represents a MySubaru API client that interacts with the MySubaru API.
type Client struct {
	credentials     config.Credentials
	httpClient      *resty.Client
	country         string // USA | CA
	updateInterval  int    // 7200
	fetchInterval   int    // 360
	currentVin      string
	listOfVins      []string
	isAuthenticated bool
	isRegistered    bool
	isAlive         bool
	logger          *slog.Logger
	sync.RWMutex
}

// New function creates a New MySubaru API client
func New(config *config.Config) (*Client, error) {

	client := &Client{
		credentials:    config.MySubaru.Credentials,
		country:        config.MySubaru.Region,
		updateInterval: 7200,
		fetchInterval:  360,
		logger:         config.Logger,
	}

	httpClient := resty.New()
	httpClient.
		SetBaseURL(MOBILE_API_SERVER[client.country]).
		SetHeaders(map[string]string{
			"User-Agent":       "Mozilla/5.0 (Linux; Android 10; Android SDK built for x86 Build/QSR1.191030.002; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.185 Mobile Safari/537.36",
			"Origin":           "file://",
			"X-Requested-With": MOBILE_APP[client.country],
			"Accept-Language":  "en-US,en;q=0.9",
			"Accept-Encoding":  "gzip, deflate",
			"Accept":           "*/*"})

	client.httpClient = httpClient
	resp, err := client.auth()
	if err != nil {
		client.logger.Error("error while executing auth request", "request", "auth", "error", err.Error())
		return nil, errors.New("error while executing auth request: " + err.Error())
	}

	var sd SessionData
	err = json.Unmarshal(resp.Data, &sd)
	if err != nil {
		client.logger.Error("error while parsing json", "request", "auth", "error", err.Error())
	}
	// client.logger.Debug("unmarshaled json data", "request", "auth", "type", "sessionData", "body", sd)

	if sd.DeviceRegistered && sd.RegisteredDevicePermanent {
		// client.logger.Debug("client authentication successful")
		client.isAuthenticated = true
		client.isRegistered = true
	}
	// TODO: Work on registerDevice()
	// } else {
	// 	// client.logger.Debug("client authentication successful, but devices is not registered")
	// 	client.registerDevice()
	// }

	// client.logger.Debug("parsing cars assigned to the account", "quantity", len(sd.Vehicles))
	if len(sd.Vehicles) > 0 {
		for _, vehicle := range sd.Vehicles {
			// client.logger.Debug("parsing car", "vin", vehicle.Vin)
			client.listOfVins = append(client.listOfVins, vehicle.Vin)
		}
		client.currentVin = client.listOfVins[0]
	} else {
		client.logger.Error("there are no cars assigned to the account")
		return nil, err
	}
	return client, nil
}

// SelectVehicle selects a vehicle by its VIN. If no VIN is provided, it uses the current VIN.
func (c *Client) SelectVehicle(vin string) (*VehicleData, error) {
	if vin == "" {
		vin = c.currentVin
	}
	vinCheck(vin)

	params := map[string]string{
		"vin": vin,
		"_":   timestamp()}
	reqURL := MOBILE_API_VERSION + apiURLs["API_SELECT_VEHICLE"]
	resp, err := c.execute(GET, reqURL, params, false)
	if err != nil {
		c.logger.Error("error while executing SelectVehicle request", "request", "SelectVehicle", "error", err.Error())
		return nil, errors.New("error while executing SelectVehicle request: " + err.Error())
	}
	// c.logger.Debug("http request output", "request", "SelectVehicle", "body", resp)

	var vd VehicleData
	err = json.Unmarshal(resp.Data, &vd)
	if err != nil {
		c.logger.Error("error while parsing json", "request", "SelectVehicle", "error", err.Error())
		return nil, errors.New("error while parsing json while vehicle selection")
	}
	// c.logger.Debug("http request output", "request", "SelectVehicle", "body", resp)
	return &vd, nil
}

// GetVehicles retrieves a list of vehicles associated with the client's account.
func (c *Client) GetVehicles() ([]*Vehicle, error) {
	var vehicles []*Vehicle
	for _, vin := range c.listOfVins {
		vehicle, err := c.GetVehicleByVin(vin)
		if err != nil {
			c.logger.Error("cannot get vehicle data", "request", "GetVehicles", "error", err.Error())
			return nil, errors.New("cannot get vehicle data: " + err.Error())
		}
		vehicles = append(vehicles, vehicle)
	}
	return vehicles, nil
}

// GetVehicleByVin retrieves a vehicle by its VIN from the client's list of vehicles.
func (c *Client) GetVehicleByVin(vin string) (*Vehicle, error) {
	var vehicle *Vehicle
	if slices.Contains(c.listOfVins, vin) {
		params := map[string]string{
			"vin": vin,
			"_":   timestamp()}
		reqURL := MOBILE_API_VERSION + apiURLs["API_SELECT_VEHICLE"]
		resp, err := c.execute(GET, reqURL, params, false)
		if err != nil {
			c.logger.Error("error while executing GetVehicleByVIN request", "request", "GetVehicleByVIN", "error", err.Error())
			return nil, errors.New("error while executing GetVehicleByVIN request: " + err.Error())
		}
		// c.logger.Debug("http request output", "request", "GetVehicleByVIN", "body", resp)

		var vd VehicleData
		err = json.Unmarshal(resp.Data, &vd)
		if err != nil {
			c.logger.Error("error while parsing json", "request", "GetVehicleByVIN", "error", err.Error())
		}
		// c.logger.Debug("http request output", "request", "GetVehicleByVIN", "body", resp)

		vehicle = &Vehicle{
			Vin:                  vin,
			CarName:              vd.VehicleName,
			CarNickname:          vd.Nickname,
			ModelName:            vd.ModelName,
			ModelYear:            vd.ModelYear,
			ModelCode:            vd.ModelCode,
			ExtDescrip:           vd.ExtDescrip,
			IntDescrip:           vd.IntDescrip,
			TransCode:            vd.TransCode,
			EngineSize:           vd.EngineSize,
			VehicleKey:           vd.VehicleKey,
			LicensePlate:         vd.LicensePlate,
			LicensePlateState:    vd.LicensePlateState,
			Features:             vd.Features,
			SubscriptionFeatures: vd.SubscriptionFeatures,
			client:               c,
		}
		vehicle.Doors = make(map[string]Door)
		vehicle.Windows = make(map[string]Window)
		vehicle.Tires = make(map[string]Tire)
		vehicle.ClimateProfiles = make(map[string]ClimateProfile)
		vehicle.Troubles = make(map[string]Trouble)

		if vehicle.isEV() {
			vehicle.EV = true
		} else {
			vehicle.EV = false
		}

		vehicle.GetVehicleStatus()
		vehicle.GetVehicleCondition()
		vehicle.GetVehicleHealth()
		vehicle.GetClimatePresets()
		vehicle.GetClimateUserPresets()
		vehicle.GetClimateQuickPresets()

		return vehicle, nil
	}
	c.logger.Error("vin code is not in the list of the available vin codes", "request", "GetVehicleByVIN")
	return nil, errors.New("vin code is not in the list of the available vin codes")
}

// func isPINRequired()          {}
// func getVehicles()            {}
// func getEVStatus()            {}
// func getRemoteOptionsStatus() {}
// func getRemoteStartStatus()   {}
// func getSafetyStatus()        {}
// func getSubscriptionStatus()  {}

// IsAlive checks if the Client instance is alive
func (c *Client) IsAlive() bool {
	return c.isAlive
}

// execute executes an HTTP request based on the method, URL, and parameters provided.
func (c *Client) execute(method string, url string, params map[string]string, j bool) (*Response, error) {
	c.Lock()
	// defer timeTrack("[TIMETRK] Executing HTTP Request")
	var resp *resty.Response
	var err error
	// c.logger.Debug("executing http request", "method", method, "url", url, "params", params)

	// GET Requests
	if method == GET {
		resp, err = c.httpClient.
			R().
			SetQueryParams(params).
			Get(url)
		if err != nil {
			c.logger.Error("error while executing GET request", "request", "execute", "method", method, "url", url, "error", err.Error())
			return nil, err
		}
		c.logger.Debug("executed GET request", "method", method, "url", url, "params", params)
	}

	// POST Requests
	if method == POST {
		if j { // POST > JSON Body
			resp, err = c.httpClient.
				R().
				SetBody(params).
				Post(url)
			if err != nil {
				c.logger.Error("error while executing POST request", "request", "execute", "method", method, "url", url, "error", err.Error())
				return nil, err
			}
		} else { // POST > Form Data
			resp, err = c.httpClient.
				R().
				SetFormData(params).
				Post(url)
			if err != nil {
				c.logger.Error("error while executing POST request", "request", "execute", "method", method, "url", url, "error", err.Error())
				return nil, err
			}
		}
		c.logger.Debug("executed POST request", "method", method, "url", url, "params", params)
	}

	if resp.IsSuccess() {
		resBytes, err := io.ReadAll(resp.Body)
		if err != nil {
			c.logger.Error("error while getting body", "error", err.Error())
		}
		c.logger.Debug("parsed http request output", "data", string(resBytes))

		if r, ok := c.parseResponse(resBytes); ok {
			c.isAlive = true
			c.Unlock()
			return &r, nil
		} else {
			if r.DataName == "errorResponse" {
				var er ErrorResponse
				err := json.Unmarshal(r.Data, &er)
				if err != nil {
					c.logger.Error("error while parsing json", "request", "errorResponse", "error", err.Error())
				}
				if _, ok := API_ERRORS[er.ErrorLabel]; ok {
					c.logger.Error("request got an error", "request", "execute", "method", method, "url", url, "label", er.ErrorLabel, "descrip[tion", er.ErrorDescription)
				}
				c.logger.Error("request got an unknown error", "request", "execute", "method", method, "url", url, "label", er.ErrorLabel, "descrip[tion", er.ErrorDescription)
				c.Unlock()
				return nil, errors.New("request is not successfull, HTTP code: " + resp.Status())
			}
			c.logger.Error("request is not successfull", "request", "execute", "method", method, "url", url, "error", err.Error())
		}
	}
	c.isAlive = false
	c.Unlock()
	return nil, errors.New("request is not successfull, HTTP code: " + resp.Status())
}

// auth authenticates the client with the MySubaru API using the provided credentials.
func (c *Client) auth() (*Response, error) {
	params := map[string]string{
		"env":           "cloudprod",
		"deviceType":    "android",
		"loginUsername": c.credentials.Username,
		"password":      c.credentials.Password,
		"deviceId":      c.credentials.DeviceID,
		"passwordToken": "",
		"selectedVin":   "",
		"pushToken":     ""}
	reqURL := MOBILE_API_VERSION + apiURLs["API_LOGIN"]
	resp, err := c.execute(POST, reqURL, params, false)
	c.logger.Debug("AUTH HTTP OUTPUT", "body", resp)
	if err != nil {
		c.logger.Error("error while executing auth request", "request", "auth", "error", err.Error())
		return nil, errors.New("error while executing auth request: " + err.Error())
	}
	c.logger.Debug("AUTH HTTP OUTPUT", "body", resp)
	return resp, nil
}

// parseResponse parses the JSON response from the MySubaru API into a Response struct.
func (c *Client) parseResponse(b []byte) (Response, bool) {
	var r Response
	err := json.Unmarshal(b, &r)
	if err != nil {
		c.logger.Error("error while parsing json", "error", err.Error())
		return r, false
	}
	return r, true
}

// ValidateSession checks if the current session is valid by making a request to the vehicle status API.
func (c *Client) ValidateSession() bool {
	reqURL := MOBILE_API_VERSION + apiURLs["API_VEHICLE_STATUS"]
	resp, err := c.execute(GET, reqURL, map[string]string{}, false)
	if err != nil {
		c.logger.Error("error while executing validateSession request", "request", "validateSession", "error", err.Error())
		return false
	}
	c.logger.Debug("http request output", "request", "validateSession", "body", resp)

	return true
}

// validateSession .
// TODO: add session validation process and add it to the proper functions
// func (c *Client) validateSession() bool {
// 	reqURL := MOBILE_API_VERSION + apiURLs["API_VALIDATE_SESSION"]
// 	resp := c.execute(reqURL, GET, map[string]string{}, "", false)
// 	// c.logger.Debug("http request output", "request", "validateSession", "body", resp)

// 	if r, ok := c.parseResponse(resp); ok {
// 		c.logger.Error("error while parsing json", "request", "validateSession", "error", err.Error())
// 		return true
// 	} else {
// 		resp := c.auth()
// 		return true
// 	}
// 	return false
// }

// GET
// https://www.mysubaru.com/profile/verifyDeviceName.json?clientId=2574212&deviceName=Alex%20Google%20Pixel%204%20XL
// RESP: true/false

// POST
// https://www.mysubaru.com/profile/editDeviceName.json?clientId=2574212&deviceName=Alex%20Google%20Pixel%204%20XL
// clientId: 2574212
// deviceName: Alex Google Pixel 4 XL
// RESP: true/false

// GET
// https://www.mysubaru.com/listMyDevices.json
// {"success":true,"dataName":"authorizedDevices","data":[{"telematicsClientDeviceKey":2574212,"deviceType":"android","deviceName":"Alex Google Pixel 4 XL","createdDate":"2019-11-29T20:32:21.000+0000","modifiedDate":"2020-06-08T17:48:22.000+0000"},{"telematicsClientDeviceKey":4847533,"deviceName":"Home Assistant: Added 2021-03-03","createdDate":"2021-03-03T20:53:44.000+0000","modifiedDate":"2021-03-03T20:53:47.000+0000"},{"telematicsClientDeviceKey":7222995,"deviceType":"android","deviceName":"Alex Google Pixel 6 Pro","createdDate":"2021-10-28T15:27:36.000+0000","modifiedDate":"2021-10-28T15:27:58.000+0000"},{"telematicsClientDeviceKey":8207130,"deviceName":"Mac/iOS Chrome","createdDate":"2021-12-21T21:19:40.000+0000","modifiedDate":"2021-12-21T21:19:40.000+0000"}]}
// {"success":true,"dataName":"authorizedDevices","data":[{"telematicsClientDeviceKey":2574212,"deviceType":"android","deviceName":"Alex Google Pixel 4 XL","createdDate":"2019-11-29T20:32:21.000+0000","modifiedDate":"2020-06-08T17:48:22.000+0000"},{"telematicsClientDeviceKey":4847533,"deviceName":"Home Assistant: Added 2021-03-03","createdDate":"2021-03-03T20:53:44.000+0000","modifiedDate":"2021-03-03T20:53:47.000+0000"},{"telematicsClientDeviceKey":7222995,"deviceType":"android","deviceName":"Alex Google Pixel 6 Pro","createdDate":"2021-10-28T15:27:36.000+0000","modifiedDate":"2021-10-28T15:27:58.000+0000"},{"telematicsClientDeviceKey":8210723,"deviceName":"Hassio Golang Integration","createdDate":"2021-12-22T01:38:43.000+0000","modifiedDate":"2021-12-22T01:38:43.000+0000"},{"telematicsClientDeviceKey":8207130,"deviceName":"Mac/iOS Chrome","createdDate":"2021-12-21T21:19:40.000+0000","modifiedDate":"2021-12-21T21:19:40.000+0000"}]}

// // registerDevice .
// func (c *Client) registerDevice() bool {
// 	// c.httpClient.
// 	// 	SetBaseURL(WEB_API_SERVER[c.country]).
// 	// 	R().
// 	// 	SetFormData(map[string]string{
// 	// 		"username": c.credentials.username,
// 	// 		"password": c.credentials.password,
// 	// 		"deviceId": c.credentials.deviceId,
// 	// 	}).
// 	// 	Post(apiURLs["WEB_API_LOGIN"])
// 	params := map[string]string{
// 		"username": c.credentials.Username,
// 		"password": c.credentials.Password,
// 		"deviceId": c.credentials.DeviceID}
// 	reqURL := WEB_API_SERVER[c.country] + apiURLs["WEB_API_LOGIN"]
// 	resp, _ := c.execute(POST, reqURL, params, true)

// 	// Authorizing device via web API
// 	// c.httpClient.
// 	// 	SetBaseURL(WEB_API_SERVER[c.country]).
// 	// 	R().
// 	// 	SetQueryParams(map[string]string{
// 	// 		"deviceId": c.credentials.deviceId,
// 	// 	}).
// 	// 	Get(apiURLs["WEB_API_AUTHORIZE_DEVICE"])
// 	params = map[string]string{
// 		"deviceId": c.credentials.DeviceID}
// 	reqURL = WEB_API_SERVER[c.country] + apiURLs["WEB_API_AUTHORIZE_DEVICE"]
// 	c.execute(reqURL, GET, params, "", false)

// 	return c.setDeviceName()
// }

// // setDeviceName .
// func (c *Client) setDeviceName() bool {
// 	params := map[string]string{
// 		"deviceId":   c.credentials.DeviceID,
// 		"deviceName": c.credentials.DeviceName}
// 	reqURL := WEB_API_SERVER[c.country] + apiURLs["WEB_API_NAME_DEVICE"]
// 	c.execute(reqURL, GET, params, "", false)

// 	return true
// }

// // listDevices .
// func (c *Client) listDevices() {
// 	// Accept: application/json, text/javascript, */*; q=0.01
// 	// Accept-Encoding: gzip, deflate, br
// 	// Accept-Language: en-US,en;q=0.9,ru;q=0.8
// 	// Connection: keep-alive
// 	// Cookie: ORA_OTD_JROUTE=ozLwELf5jS-NHQ2CKZorOFfRgb8uo6lL; soa-visitor=12212021VHWnkqERZYThWe87TLUhr2Db; AMCVS_94001C8B532957140A490D4D%40AdobeOrg=1; mys-referringCodes=7~direct~; s_cc=true; AMCVS_subarucom%40AdobeOrg=1; style=null; s_pv=login.html; AMCV_subarucom%40AdobeOrg=-1124106680%7CMCIDTS%7C18988%7CMCMID%7C81535064704660726005836131001032500276%7CMCAID%7CNONE%7CMCOPTOUT-1640567559s%7CNONE%7CvVersion%7C5.2.0; AMCV_94001C8B532957140A490D4D%40AdobeOrg=-1124106680%7CMCIDTS%7C18988%7CMCMID%7C76913534164341455390435376071204508177%7CMCAID%7CNONE%7CMCOPTOUT-1640567559s%7CNONE%7CvVersion%7C5.2.0; s_sq=subarumysubarucwpprod%3D%2526c.%2526a.%2526activitymap.%2526page%253Dlogin.html%2526link%253DLog%252520In%2526region%253DloginForm%2526pageIDType%253D1%2526.activitymap%2526.a%2526.c%2526pid%253Dlogin.html%2526pidt%253D1%2526oid%253DLog%252520In%2526oidt%253D3%2526ot%253DSUBMIT; JSESSIONID=9685CFEB7888A0E6E25239D559E3B580; X-Oracle-BMC-LBS-Route=89e3283ece707e8a0ba4850e1a622122e039fd3d27da03a11a2ff120e313e9b656c62fd8a7c42ae8061a49ad6e1caf63a49d7befe4ad2a0194b0aeca
// 	// Host: www.mysubaru.com
// 	// Referer: https://www.mysubaru.com/profile/authorizedDevices.html
// 	// User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36
// 	// X-Requested-With: XMLHttpRequest
// 	resp, err := c.httpClient.
// 		SetBaseURL(WEB_API_SERVER[c.country]).
// 		R().
// 		EnableTrace().
// 		Get(apiURLs["WEB_API_LIST_DEVICES"])

// 		// Explore response object
// 	fmt.Println("Response Info:")
// 	fmt.Println("  Error      :", err)
// 	fmt.Println("  Status Code:", resp.StatusCode())
// 	fmt.Println("  Status     :", resp.Status())
// 	fmt.Println("  Proto      :", resp.Proto())
// 	fmt.Println("  Time       :", resp.Duration())
// 	fmt.Println("  Received At:", resp.ReceivedAt())
// 	// fmt.Println("  Body       :\n", resp)
// 	fmt.Println()

// 	// Explore trace info
// 	fmt.Println("Request Trace Info:")
// 	ti := resp.Request.TraceInfo()
// 	fmt.Println("  DNSLookup     :", ti.DNSLookup)
// 	fmt.Println("  ConnTime      :", ti.ConnTime)
// 	fmt.Println("  TCPConnTime   :", ti.TCPConnTime)
// 	fmt.Println("  TLSHandshake  :", ti.TLSHandshake)
// 	fmt.Println("  ServerTime    :", ti.ServerTime)
// 	fmt.Println("  ResponseTime  :", ti.ResponseTime)
// 	fmt.Println("  TotalTime     :", ti.TotalTime)
// 	fmt.Println("  IsConnReused  :", ti.IsConnReused)
// 	fmt.Println("  IsConnWasIdle :", ti.IsConnWasIdle)
// 	fmt.Println("  ConnIdleTime  :", ti.ConnIdleTime)
// 	fmt.Println("  RequestAttempt:", ti.RequestAttempt)
// 	fmt.Println("  RemoteAddr    :", ti.RemoteAddr)

// 	// c.logger.Debug("LIST DEVICES OUTPUT", "body", string([]byte(resp.Body())))

// 	// c.httpClient.SetBaseURL(WEB_API_SERVER[c.country]).SetCookies(c.cookies)
// 	// reqURL := apiURLs["WEB_API_LIST_DEVICES"]
// 	// resp := c.execute(reqURL, GET, map[string]string{}, "", false)

// 	// if isResponseSuccessfull(resp) {
// 	// 	logger.Debugf("LIST DEVICES OUTPUT >> %v\n", string(resp))
// 	// }
// }

// c.logger.Debug("parsed http request output", "data", r.Data)

// ERROR
// {"httpCode":500,"errorCode":"error","errorMessage":"org.springframework.web.HttpMediaTypeNotSupportedException - Content type 'application/x-www-form-urlencoded' not supported"}
// {"success":true,"errorCode":null,"dataName":"remoteServiceStatus","data":{"serviceRequestId":"4S4BTGND8L3137058_1640203129607_19_@NGTP","success":false,"cancelled":false,"remoteServiceType":"unlock","remoteServiceState":"started","subState":null,"errorCode":null,"result":null,"updateTime":null,"vin":"4S4BTGND8L3137058"}}
// API_REMOTE_SVC_STATUS
// {"success":false,"errorCode":"404-soa-unableToParseResponseBody","dataName":"errorResponse","data":{"errorLabel":"404-soa-unableToParseResponseBody","errorDescription":null}}
// if js_resp["errorCode"] == sc.ERROR_SOA_403:
//     raise RemoteServiceFailure("Backend session expired, please try again")
// if js_resp["data"]["remoteServiceState"] == "finished":
//     if js_resp["data"]["success"]:
//         _LOGGER.info("Remote service request completed successfully: %s", req_id)
//         return True, js_resp
//     _LOGGER.error(
//         "Remote service request completed but failed: %s Error: %s",
//         req_id,
//         js_resp["data"]["errorCode"],
//     )
//     raise RemoteServiceFailure(
//         "Remote service request completed but failed: %s" % js_resp["data"]["errorCode"]
//     )
// if js_resp["data"].get("remoteServiceState") == "started":
//     _LOGGER.info(
//         "Subaru API reports remote service request is in progress: %s",
//         req_id,
//     )
//     attempts_left -= 1
//     await asyncio.sleep(2)

// TODO: Work on errors
// error, _ := respParsed.Path("errorCode").Data().(string)
// switch {
// case error == apiErrors["ERROR_INVALID_ACCOUNT"]:
// 	client.logger.Debug("Invalid account")
// case error == apiErrors["ERROR_INVALID_CREDENTIALS"]:
// 	client.logger.Debug("Client authentication failed")
// case error == apiErrors["ERROR_PASSWORD_WARNING"]:
// 	client.logger.Debug("Multiple Password Failures.")
// default:
// 	client.logger.Debug("Uknown error")
// }