netmaker/controllers/user.go

package controller

import (
	"bytes"
	"encoding/base64"
	"encoding/json"
	"errors"
	"fmt"
	"image/png"
	"net/http"
	"reflect"
	"time"

	"github.com/pquerna/otp"
	"golang.org/x/crypto/bcrypt"

	"github.com/google/uuid"
	"github.com/gorilla/mux"
	"github.com/gorilla/websocket"
	"github.com/gravitl/netmaker/auth"
	"github.com/gravitl/netmaker/logger"
	"github.com/gravitl/netmaker/logic"
	"github.com/gravitl/netmaker/models"
	"github.com/gravitl/netmaker/mq"
	"github.com/gravitl/netmaker/schema"
	"github.com/gravitl/netmaker/servercfg"
	"github.com/pquerna/otp/totp"
	"golang.org/x/exp/slog"
)

var (
	upgrader = websocket.Upgrader{}
)

var ListRoles = listRoles

func userHandlers(r *mux.Router) {
	r.HandleFunc("/api/users/adm/hassuperadmin", hasSuperAdmin).Methods(http.MethodGet)
	r.HandleFunc("/api/users/adm/createsuperadmin", createSuperAdmin).Methods(http.MethodPost)
	r.HandleFunc("/api/users/adm/transfersuperadmin/{username}", logic.SecurityCheck(true, http.HandlerFunc(transferSuperAdmin))).
		Methods(http.MethodPost)
	r.HandleFunc("/api/users/adm/authenticate", authenticateUser).Methods(http.MethodPost)
	r.HandleFunc("/api/users/{username}/validate-identity", logic.SecurityCheck(false, logic.ContinueIfUserMatch(http.HandlerFunc(validateUserIdentity)))).Methods(http.MethodPost)
	r.HandleFunc("/api/users/{username}/auth/init-totp", logic.SecurityCheck(false, logic.ContinueIfUserMatch(http.HandlerFunc(initiateTOTPSetup)))).Methods(http.MethodPost)
	r.HandleFunc("/api/users/{username}/auth/complete-totp", logic.SecurityCheck(false, logic.ContinueIfUserMatch(http.HandlerFunc(completeTOTPSetup)))).Methods(http.MethodPost)
	r.HandleFunc("/api/users/{username}/auth/verify-totp", logic.PreAuthCheck(logic.ContinueIfUserMatch(http.HandlerFunc(verifyTOTP)))).Methods(http.MethodPost)
	r.HandleFunc("/api/users/{username}", logic.SecurityCheck(true, http.HandlerFunc(updateUser))).Methods(http.MethodPut)
	r.HandleFunc("/api/users/{username}", logic.SecurityCheck(true, checkFreeTierLimits(limitChoiceUsers, http.HandlerFunc(createUser)))).Methods(http.MethodPost)
	r.HandleFunc("/api/users/{username}", logic.SecurityCheck(true, http.HandlerFunc(deleteUser))).Methods(http.MethodDelete)
	r.HandleFunc("/api/users/{username}", logic.SecurityCheck(false, logic.ContinueIfUserMatch(http.HandlerFunc(getUser)))).Methods(http.MethodGet)
	r.HandleFunc("/api/users/{username}/enable", logic.SecurityCheck(true, http.HandlerFunc(enableUserAccount))).Methods(http.MethodPost)
	r.HandleFunc("/api/users/{username}/disable", logic.SecurityCheck(true, http.HandlerFunc(disableUserAccount))).Methods(http.MethodPost)
	r.HandleFunc("/api/users/{username}/settings", logic.SecurityCheck(false, logic.ContinueIfUserMatch(http.HandlerFunc(getUserSettings)))).Methods(http.MethodGet)
	r.HandleFunc("/api/users/{username}/settings", logic.SecurityCheck(false, logic.ContinueIfUserMatch(http.HandlerFunc(updateUserSettings)))).Methods(http.MethodPut)
	r.HandleFunc("/api/v1/users", logic.SecurityCheck(false, logic.ContinueIfUserMatch(http.HandlerFunc(getUserV1)))).Methods(http.MethodGet)
	r.HandleFunc("/api/users", logic.SecurityCheck(true, http.HandlerFunc(getUsers))).Methods(http.MethodGet)
	r.HandleFunc("/api/v1/users/roles", logic.SecurityCheck(true, http.HandlerFunc(ListRoles))).Methods(http.MethodGet)
	r.HandleFunc("/api/v1/users/access_token", logic.SecurityCheck(true, http.HandlerFunc(createUserAccessToken))).Methods(http.MethodPost)
	r.HandleFunc("/api/v1/users/access_token", logic.SecurityCheck(true, http.HandlerFunc(getUserAccessTokens))).Methods(http.MethodGet)
	r.HandleFunc("/api/v1/users/access_token", logic.SecurityCheck(true, http.HandlerFunc(deleteUserAccessTokens))).Methods(http.MethodDelete)
	r.HandleFunc("/api/v1/users/logout", logic.SecurityCheck(false, logic.ContinueIfUserMatch(http.HandlerFunc(logout)))).Methods(http.MethodPost)
}

// @Summary     Authenticate a user to retrieve an authorization token
// @Router      /api/v1/users/{username}/access_token [post]
// @Tags        Auth
// @Accept      json
// @Param       body body models.UserAuthParams true "Authentication parameters"
// @Success     200 {object} models.SuccessResponse
// @Failure     400 {object} models.ErrorResponse
// @Failure     401 {object} models.ErrorResponse
// @Failure     500 {object} models.ErrorResponse
func createUserAccessToken(w http.ResponseWriter, r *http.Request) {

	// Auth request consists of Mac Address and Password (from node that is authorizing
	// in case of Master, auth is ignored and mac is set to "mastermac"
	var req schema.UserAccessToken

	err := json.NewDecoder(r.Body).Decode(&req)
	if err != nil {
		logger.Log(0, "error decoding request body: ",
			err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, logic.BadReq))
		return
	}
	if req.Name == "" {
		logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("name is required"), logic.BadReq))
		return
	}
	if req.UserName == "" {
		logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("username is required"), logic.BadReq))
		return
	}
	caller, err := logic.GetUser(r.Header.Get("user"))
	if err != nil {
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, logic.UnAuthorized))
		return
	}
	user, err := logic.GetUser(req.UserName)
	if err != nil {
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, logic.UnAuthorized))
		return
	}
	if caller.UserName != user.UserName && caller.PlatformRoleID != models.SuperAdminRole {
		if caller.PlatformRoleID == models.AdminRole {
			if user.PlatformRoleID == models.SuperAdminRole || user.PlatformRoleID == models.AdminRole {
				logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("not enough permissions to create token for user "+user.UserName), logic.Forbidden_Msg))
				return
			}
		} else {
			logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("not enough permissions to create token for user "+user.UserName), logic.Forbidden_Msg))
			return
		}
	}

	req.ID = uuid.New().String()
	req.CreatedBy = r.Header.Get("user")
	req.CreatedAt = time.Now()
	jwt, err := logic.CreateUserAccessJwtToken(user.UserName, user.PlatformRoleID, req.ExpiresAt, req.ID)
	if jwt == "" {
		// very unlikely that err is !nil and no jwt returned, but handle it anyways.
		logic.ReturnErrorResponse(
			w,
			r,
			logic.FormatError(errors.New("error creating access token "+err.Error()), logic.Internal),
		)
		return
	}
	err = req.Create(r.Context())
	if err != nil {
		logic.ReturnErrorResponse(
			w,
			r,
			logic.FormatError(errors.New("error creating access token "+err.Error()), logic.Internal),
		)
		return
	}
	logic.LogEvent(&models.Event{
		Action: models.Create,
		Source: models.Subject{
			ID:   caller.UserName,
			Name: caller.UserName,
			Type: models.UserSub,
		},
		TriggeredBy: caller.UserName,
		Target: models.Subject{
			ID:   req.ID,
			Name: req.Name,
			Type: models.UserAccessTokenSub,
			Info: req,
		},
		Origin: models.Dashboard,
	})
	logic.ReturnSuccessResponseWithJson(w, r, models.SuccessfulUserLoginResponse{
		AuthToken: jwt,
		UserName:  req.UserName,
	}, "api access token has generated for user "+req.UserName)
}

// @Summary     Authenticate a user to retrieve an authorization token
// @Router      /api/v1/users/{username}/access_token [post]
// @Tags        Auth
// @Accept      json
// @Param       body body models.UserAuthParams true "Authentication parameters"
// @Success     200 {object} models.SuccessResponse
// @Failure     400 {object} models.ErrorResponse
// @Failure     401 {object} models.ErrorResponse
// @Failure     500 {object} models.ErrorResponse
func getUserAccessTokens(w http.ResponseWriter, r *http.Request) {
	username := r.URL.Query().Get("username")
	if username == "" {
		logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("username is required"), "badrequest"))
		return
	}
	logic.ReturnSuccessResponseWithJson(w, r, (&schema.UserAccessToken{UserName: username}).ListByUser(r.Context()), "fetched api access tokens for user "+username)
}

// @Summary     Authenticate a user to retrieve an authorization token
// @Router      /api/v1/users/{username}/access_token [post]
// @Tags        Auth
// @Accept      json
// @Param       body body models.UserAuthParams true "Authentication parameters"
// @Success     200 {object} models.SuccessResponse
// @Failure     400 {object} models.ErrorResponse
// @Failure     401 {object} models.ErrorResponse
// @Failure     500 {object} models.ErrorResponse
func deleteUserAccessTokens(w http.ResponseWriter, r *http.Request) {
	id := r.URL.Query().Get("id")
	if id == "" {
		logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("id is required"), "badrequest"))
		return
	}
	a := schema.UserAccessToken{
		ID: id,
	}
	err := a.Get(r.Context())
	if err != nil {
		logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("token does not exist"), "badrequest"))
		return
	}
	caller, err := logic.GetUser(r.Header.Get("user"))
	if err != nil {
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "unauthorized"))
		return
	}
	user, err := logic.GetUser(a.UserName)
	if err != nil {
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "unauthorized"))
		return
	}
	if caller.UserName != user.UserName && caller.PlatformRoleID != models.SuperAdminRole {
		if caller.PlatformRoleID == models.AdminRole {
			if user.PlatformRoleID == models.SuperAdminRole || user.PlatformRoleID == models.AdminRole {
				logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("not enough permissions to delete token of user "+user.UserName), logic.Forbidden_Msg))
				return
			}
		} else {
			logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("not enough permissions to delete token of user "+user.UserName), logic.Forbidden_Msg))
			return
		}
	}

	err = (&schema.UserAccessToken{ID: id}).Delete(r.Context())
	if err != nil {
		logic.ReturnErrorResponse(
			w,
			r,
			logic.FormatError(errors.New("error deleting access token "+err.Error()), "internal"),
		)
		return
	}
	logic.LogEvent(&models.Event{
		Action: models.Delete,
		Source: models.Subject{
			ID:   caller.UserName,
			Name: caller.UserName,
			Type: models.UserSub,
		},
		TriggeredBy: caller.UserName,
		Target: models.Subject{
			ID:   a.ID,
			Name: a.Name,
			Type: models.UserAccessTokenSub,
			Info: a,
		},
		Origin: models.Dashboard,
		Diff: models.Diff{
			Old: a,
			New: nil,
		},
	})
	logic.ReturnSuccessResponseWithJson(w, r, nil, "revoked access token")
}

// @Summary     Authenticate a user to retrieve an authorization token
// @Router      /api/users/adm/authenticate [post]
// @Tags        Auth
// @Accept      json
// @Param       body body models.UserAuthParams true "Authentication parameters"
// @Success     200 {object} models.SuccessResponse
// @Failure     400 {object} models.ErrorResponse
// @Failure     401 {object} models.ErrorResponse
// @Failure     500 {object} models.ErrorResponse
func authenticateUser(response http.ResponseWriter, request *http.Request) {
	appName := request.Header.Get("X-Application-Name")
	if appName == "" {
		appName = logic.NetmakerDesktopApp
	}

	// Auth request consists of Mac Address and Password (from node that is authorizing
	// in case of Master, auth is ignored and mac is set to "mastermac"
	var authRequest models.UserAuthParams
	var errorResponse = models.ErrorResponse{
		Code: http.StatusInternalServerError, Message: "W1R3: It's not you it's me.",
	}
	decoder := json.NewDecoder(request.Body)
	decoderErr := decoder.Decode(&authRequest)
	defer request.Body.Close()
	if decoderErr != nil {
		logger.Log(0, "error decoding request body: ",
			decoderErr.Error())
		logic.ReturnErrorResponse(response, request, errorResponse)
		return
	}
	user, err := logic.GetUser(authRequest.UserName)
	if err != nil {
		logger.Log(0, authRequest.UserName, "user validation failed: ",
			err.Error())
		logic.ReturnErrorResponse(response, request, logic.FormatError(err, "unauthorized"))
		return
	}
	if logic.IsOauthUser(user) == nil {
		logic.ReturnErrorResponse(response, request, logic.FormatError(errors.New("user is registered via SSO"), "badrequest"))
		return
	}

	if user.AccountDisabled {
		err = errors.New("user account disabled")
		logic.ReturnErrorResponse(response, request, logic.FormatError(err, "unauthorized"))
		return
	}

	if user.PlatformRoleID != models.SuperAdminRole && !logic.IsBasicAuthEnabled() {
		logic.ReturnErrorResponse(
			response,
			request,
			logic.FormatError(fmt.Errorf("basic auth is disabled"), "badrequest"),
		)
		return
	}

	if val := request.Header.Get("From-Ui"); val == "true" {
		// request came from UI, if normal user block Login

		role, err := logic.GetRole(user.PlatformRoleID)
		if err != nil {
			logic.ReturnErrorResponse(response, request, logic.FormatError(errors.New("access denied to dashboard"), "unauthorized"))
			return
		}
		if role.DenyDashboardAccess {
			logic.ReturnErrorResponse(response, request, logic.FormatError(errors.New("access denied to dashboard"), "unauthorized"))
			return
		}
	}

	username := authRequest.UserName
	jwt, err := logic.VerifyAuthRequest(authRequest, appName)
	if err != nil {
		logger.Log(0, username, "user validation failed: ",
			err.Error())
		logic.ReturnErrorResponse(response, request, logic.FormatError(err, "badrequest"))
		return
	}

	if jwt == "" {
		// very unlikely that err is !nil and no jwt returned, but handle it anyways.
		logger.Log(0, username, "jwt token is empty")
		logic.ReturnErrorResponse(
			response,
			request,
			logic.FormatError(errors.New("no token returned"), "internal"),
		)
		return
	}

	var successResponse models.SuccessResponse

	if user.IsMFAEnabled {
		successResponse = models.SuccessResponse{
			Code:    http.StatusOK,
			Message: "W1R3: TOTP required",
			Response: models.PartialUserLoginResponse{
				UserName:     username,
				PreAuthToken: jwt,
			},
		}
	} else {
		successResponse = models.SuccessResponse{
			Code:    http.StatusOK,
			Message: "W1R3: Device " + username + " Authorized",
			Response: models.SuccessfulUserLoginResponse{
				UserName:  username,
				AuthToken: jwt,
			},
		}
	}

	// Send back the JWT
	successJSONResponse, jsonError := json.Marshal(successResponse)
	if jsonError != nil {
		logger.Log(0, username,
			"error marshalling resp: ", jsonError.Error())
		logic.ReturnErrorResponse(response, request, errorResponse)
		return
	}
	logger.Log(2, username, "was authenticated")

	// log user activity
	if !user.IsMFAEnabled {
		if val := request.Header.Get("From-Ui"); val == "true" {
			logic.LogEvent(&models.Event{
				Action: models.Login,
				Source: models.Subject{
					ID:   user.UserName,
					Name: user.UserName,
					Type: models.UserSub,
				},
				TriggeredBy: user.UserName,
				Target: models.Subject{
					ID:   models.DashboardSub.String(),
					Name: models.DashboardSub.String(),
					Type: models.DashboardSub,
				},
				Origin: models.Dashboard,
			})
		} else {
			logic.LogEvent(&models.Event{
				Action: models.Login,
				Source: models.Subject{
					ID:   user.UserName,
					Name: user.UserName,
					Type: models.UserSub,
				},
				TriggeredBy: user.UserName,
				Target: models.Subject{
					ID:   models.ClientAppSub.String(),
					Name: models.ClientAppSub.String(),
					Type: models.ClientAppSub,
				},
				Origin: models.ClientApp,
			})
		}
	}

	response.Header().Set("Content-Type", "application/json")
	response.Write(successJSONResponse)

}

// @Summary     Validates a user's identity against it's token. This is used by UI before a user performing a critical operation to validate the user's identity.
// @Router      /api/users/{username}/validate-identity [post]
// @Tags        Auth
// @Accept      json
// @Param       body body models.UserIdentityValidationRequest true "User Identity Validation Request"
// @Success     200 {object} models.SuccessResponse
// @Failure     400 {object} models.ErrorResponse
func validateUserIdentity(w http.ResponseWriter, r *http.Request) {
	username := r.Header.Get("user")

	var req models.UserIdentityValidationRequest
	err := json.NewDecoder(r.Body).Decode(&req)
	if err != nil {
		logger.Log(0, "failed to decode request body: ", err.Error())
		err = fmt.Errorf("invalid request body: %v", err)
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}

	user, err := logic.GetUser(username)
	if err != nil {
		logger.Log(0, "failed to get user: ", err.Error())
		err = fmt.Errorf("user not found: %v", err)
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}

	var resp models.UserIdentityValidationResponse
	err = bcrypt.CompareHashAndPassword([]byte(user.Password), []byte(req.Password))
	if err != nil {
		logic.ReturnSuccessResponseWithJson(w, r, resp, "user identity validation failed")
	} else {
		resp.IdentityValidated = true
		logic.ReturnSuccessResponseWithJson(w, r, resp, "user identity validated")
	}
}

// @Summary     Initiate setting up TOTP 2FA for a user.
// @Router      /api/users/auth/init-totp [post]
// @Tags        Auth
// @Success     200 {object} models.SuccessResponse
// @Failure     400 {object} models.ErrorResponse
// @Failure     500 {object} models.ErrorResponse
func initiateTOTPSetup(w http.ResponseWriter, r *http.Request) {
	username := r.Header.Get("user")

	user, err := logic.GetUser(username)
	if err != nil {
		logger.Log(0, "failed to get user: ", err.Error())
		err = fmt.Errorf("user not found: %v", err)
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}

	if user.AuthType == models.OAuth {
		err = fmt.Errorf("auth type is %s, cannot process totp setup", user.AuthType)
		logger.Log(0, err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}

	key, err := totp.Generate(totp.GenerateOpts{
		Issuer:      "Netmaker",
		AccountName: username,
	})
	if err != nil {
		err = fmt.Errorf("failed to generate totp key: %v", err)
		logger.Log(0, err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
		return
	}

	qrCodeImg, err := key.Image(200, 200)
	if err != nil {
		err = fmt.Errorf("failed to generate totp key: %v", err)
		logger.Log(0, err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
		return
	}

	var qrCodePng bytes.Buffer
	err = png.Encode(&qrCodePng, qrCodeImg)
	if err != nil {
		err = fmt.Errorf("failed to generate totp key: %v", err)
		logger.Log(0, err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
		return
	}

	qrCode := "data:image/png;base64," + base64.StdEncoding.EncodeToString(qrCodePng.Bytes())

	logic.ReturnSuccessResponseWithJson(w, r, models.TOTPInitiateResponse{
		OTPAuthURL:          key.URL(),
		OTPAuthURLSignature: logic.GenerateOTPAuthURLSignature(key.URL()),
		QRCode:              qrCode,
	}, "totp setup initiated")
}

// @Summary     Verify and complete setting up TOTP 2FA for a user.
// @Router      /api/users/auth/complete-totp [post]
// @Tags        Auth
// @Param       body body models.UserTOTPVerificationParams true "TOTP verification parameters"
// @Success     200 {object} models.SuccessResponse
// @Failure     400 {object} models.ErrorResponse
// @Failure     500 {object} models.ErrorResponse
func completeTOTPSetup(w http.ResponseWriter, r *http.Request) {
	username := r.Header.Get("user")

	var req models.UserTOTPVerificationParams
	err := json.NewDecoder(r.Body).Decode(&req)
	if err != nil {
		logger.Log(0, "failed to decode request body: ", err.Error())
		err = fmt.Errorf("invalid request body: %v", err)
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}

	if !logic.VerifyOTPAuthURL(req.OTPAuthURL, req.OTPAuthURLSignature) {
		err = fmt.Errorf("otp auth url signature mismatch")
		logger.Log(0, err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}

	user, err := logic.GetUser(username)
	if err != nil {
		logger.Log(0, "failed to get user: ", err.Error())
		err = fmt.Errorf("user not found: %v", err)
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}

	if user.AuthType == models.OAuth {
		err = fmt.Errorf("auth type is %s, cannot process totp setup", user.AuthType)
		logger.Log(0, err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}

	otpAuthURL, err := otp.NewKeyFromURL(req.OTPAuthURL)
	if err != nil {
		err = fmt.Errorf("error parsing otp auth url: %v", err)
		logger.Log(0, err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}

	totpSecret := otpAuthURL.Secret()

	if totp.Validate(req.TOTP, totpSecret) {
		user.IsMFAEnabled = true
		user.TOTPSecret = totpSecret
		err = logic.UpsertUser(*user)
		if err != nil {
			err = fmt.Errorf("error upserting user: %v", err)
			logger.Log(0, err.Error())
			logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
			return
		}

		logic.LogEvent(&models.Event{
			Action: models.EnableMFA,
			Source: models.Subject{
				ID:   user.UserName,
				Name: user.UserName,
				Type: models.UserSub,
			},
			TriggeredBy: user.UserName,
			Target: models.Subject{
				ID:   user.UserName,
				Name: user.UserName,
				Type: models.UserSub,
			},
			Origin: models.Dashboard,
		})

		logic.ReturnSuccessResponse(w, r, fmt.Sprintf("totp setup complete for user %s", username))
	} else {
		err = fmt.Errorf("cannot setup totp for user %s: invalid otp", username)
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
	}
}

// @Summary     Verify a user's TOTP token.
// @Router      /api/users/auth/verify-totp [post]
// @Tags        Auth
// @Accept      json
// @Param       body body models.UserTOTPVerificationParams true "TOTP verification parameters"
// @Success     200 {object} models.SuccessResponse
// @Failure     400 {object} models.ErrorResponse
// @Failure     401 {object} models.ErrorResponse
// @Failure     500 {object} models.ErrorResponse
func verifyTOTP(w http.ResponseWriter, r *http.Request) {
	username := r.Header.Get("user")

	appName := r.Header.Get("X-Application-Name")
	if appName == "" {
		appName = logic.NetmakerDesktopApp
	}

	var req models.UserTOTPVerificationParams
	err := json.NewDecoder(r.Body).Decode(&req)
	if err != nil {
		logger.Log(0, "failed to decode request body: ", err.Error())
		err = fmt.Errorf("invalid request body: %v", err)
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}

	user, err := logic.GetUser(username)
	if err != nil {
		logger.Log(0, "failed to get user: ", err.Error())
		err = fmt.Errorf("user not found: %v", err)
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}

	if !user.IsMFAEnabled {
		err = fmt.Errorf("mfa is disabled for user(%s), cannot process totp verification", username)
		logger.Log(0, err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}

	if totp.Validate(req.TOTP, user.TOTPSecret) {
		jwt, err := logic.CreateUserJWT(user.UserName, user.PlatformRoleID, appName)
		if err != nil {
			err = fmt.Errorf("error creating token: %v", err)
			logger.Log(0, err.Error())
			logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
			return
		}

		// update last login time
		user.LastLoginTime = time.Now().UTC()
		err = logic.UpsertUser(*user)
		if err != nil {
			err = fmt.Errorf("error upserting user: %v", err)
			logger.Log(0, err.Error())
			logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
			return
		}

		logic.LogEvent(&models.Event{
			Action: models.Login,
			Source: models.Subject{
				ID:   user.UserName,
				Name: user.UserName,
				Type: models.UserSub,
			},
			TriggeredBy: user.UserName,
			Target: models.Subject{
				ID:   models.DashboardSub.String(),
				Name: models.DashboardSub.String(),
				Type: models.DashboardSub,
			},
			Origin: models.Dashboard,
		})

		logic.ReturnSuccessResponseWithJson(w, r, models.SuccessfulUserLoginResponse{
			UserName:  username,
			AuthToken: jwt,
		}, "W1R3: User "+username+" Authorized")
	} else {
		err = fmt.Errorf("invalid otp")
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "unauthorized"))
	}
}

// @Summary     Check if the server has a super admin
// @Router      /api/users/adm/hassuperadmin [get]
// @Tags        Users
// @Success     200 {object} bool
// @Failure     500 {object} models.ErrorResponse
func hasSuperAdmin(w http.ResponseWriter, r *http.Request) {

	w.Header().Set("Content-Type", "application/json")

	hasSuperAdmin, err := logic.HasSuperAdmin()
	if err != nil {
		logger.Log(0, "failed to check for admin: ", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
		return
	}

	json.NewEncoder(w).Encode(hasSuperAdmin)

}

// @Summary     Get an individual user
// @Router      /api/users/{username} [get]
// @Tags        Users
// @Param       username path string true "Username of the user to fetch"
// @Success     200 {object} models.User
// @Failure     500 {object} models.ErrorResponse
func getUser(w http.ResponseWriter, r *http.Request) {
	// set header.
	w.Header().Set("Content-Type", "application/json")

	var params = mux.Vars(r)
	usernameFetched := params["username"]
	user, err := logic.GetReturnUser(usernameFetched)

	if err != nil {
		logger.Log(0, usernameFetched, "failed to fetch user: ", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
		return
	}
	logger.Log(2, r.Header.Get("user"), "fetched user", usernameFetched)
	json.NewEncoder(w).Encode(user)
}

// @Summary     Enable a user's account
// @Router      /api/users/{username}/enable [post]
// @Tags        Users
// @Param       username path string true "Username of the user to enable"
// @Success     200 {object} models.SuccessResponse
// @Failure     400 {object} models.ErrorResponse
// @Failure     500 {object} models.ErrorResponse
func enableUserAccount(w http.ResponseWriter, r *http.Request) {
	username := mux.Vars(r)["username"]
	user, err := logic.GetUser(username)
	if err != nil {
		logger.Log(0, "failed to fetch user: ", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
		return
	}

	var caller *models.User
	var isMaster bool
	if r.Header.Get("user") == logic.MasterUser {
		isMaster = true
	} else {
		caller, err = logic.GetUser(r.Header.Get("user"))
		if err != nil {
			logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
			return
		}
	}

	if !isMaster && caller.UserName == user.UserName {
		// This implies that a user is trying to enable themselves.
		// This can never happen, since a disabled user cannot be
		// authenticated.
		err := fmt.Errorf("cannot enable self")
		logger.Log(0, err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "forbidden"))
		return
	}

	switch user.PlatformRoleID {
	case models.SuperAdminRole:
		// This can never happen, since a superadmin user cannot
		// be disabled.
	case models.AdminRole:
		if !isMaster && caller.PlatformRoleID != models.SuperAdminRole {
			err = fmt.Errorf("%s cannot enable an admin", caller.PlatformRoleID)
			logic.ReturnErrorResponse(w, r, logic.FormatError(err, "forbidden"))
			return
		}
	case models.PlatformUser:
		if !isMaster && caller.PlatformRoleID != models.SuperAdminRole && caller.PlatformRoleID != models.AdminRole {
			err = fmt.Errorf("%s cannot enable a platform-user", caller.PlatformRoleID)
			logic.ReturnErrorResponse(w, r, logic.FormatError(err, "forbidden"))
			return
		}
	case models.ServiceUser:
		if !isMaster && caller.PlatformRoleID != models.SuperAdminRole && caller.PlatformRoleID != models.AdminRole {
			err = fmt.Errorf("%s cannot enable a service-user", caller.PlatformRoleID)
			logic.ReturnErrorResponse(w, r, logic.FormatError(err, "forbidden"))
			return
		}
	}

	user.AccountDisabled = false
	err = logic.UpsertUser(*user)
	if err != nil {
		logger.Log(0, "failed to enable user account: ", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
	}

	logic.ReturnSuccessResponse(w, r, "user account enabled")
}

// @Summary     Disable a user's account
// @Router      /api/users/{username}/disable [post]
// @Tags        Users
// @Param       username path string true "Username of the user to disable"
// @Success     200 {object} models.SuccessResponse
// @Failure     400 {object} models.ErrorResponse
// @Failure     500 {object} models.ErrorResponse
func disableUserAccount(w http.ResponseWriter, r *http.Request) {
	username := mux.Vars(r)["username"]
	user, err := logic.GetUser(username)
	if err != nil {
		logger.Log(0, "failed to fetch user: ", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
		return
	}

	var caller *models.User
	var isMaster bool
	if r.Header.Get("user") == logic.MasterUser {
		isMaster = true
	} else {
		caller, err = logic.GetUser(r.Header.Get("user"))
		if err != nil {
			logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
			return
		}
	}

	if !isMaster && caller.UserName == user.UserName {
		// This implies that a user is trying to disable themselves.
		// This should not be allowed.
		err = fmt.Errorf("cannot disable self")
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "forbidden"))
		return
	}

	switch user.PlatformRoleID {
	case models.SuperAdminRole:
		err = errors.New("cannot disable a super-admin")
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "forbidden"))
		return
	case models.AdminRole:
		if !isMaster && caller.PlatformRoleID != models.SuperAdminRole {
			err = fmt.Errorf("%s cannot disable an admin", caller.PlatformRoleID)
			logic.ReturnErrorResponse(w, r, logic.FormatError(err, "forbidden"))
			return
		}
	case models.PlatformUser:
		if !isMaster && caller.PlatformRoleID != models.SuperAdminRole && caller.PlatformRoleID != models.AdminRole {
			err = fmt.Errorf("%s cannot disable a platform-user", caller.PlatformRoleID)
			logic.ReturnErrorResponse(w, r, logic.FormatError(err, "forbidden"))
			return
		}
	case models.ServiceUser:
		if !isMaster && caller.PlatformRoleID != models.SuperAdminRole && caller.PlatformRoleID != models.AdminRole {
			err = fmt.Errorf("%s cannot disable a service-user", caller.PlatformRoleID)
			logic.ReturnErrorResponse(w, r, logic.FormatError(err, "forbidden"))
			return
		}
	}

	user.AccountDisabled = true
	err = logic.UpsertUser(*user)
	if err != nil {
		logger.Log(0, "failed to disable user account: ", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
	}

	go func() {
		extclients, err := logic.GetAllExtClients()
		if err != nil {
			logger.Log(0, "failed to get user extclients:", err.Error())
			return
		}

		for _, extclient := range extclients {
			if extclient.OwnerID == user.UserName {
				err = logic.DeleteExtClientAndCleanup(extclient)
				if err != nil {
					logger.Log(0, "failed to delete user extclient:", err.Error())
				} else {
					err := mq.PublishDeletedClientPeerUpdate(&extclient)
					if err != nil {
						logger.Log(0, "failed to publish deleted client peer update:", err.Error())
					}
				}
			}
		}
	}()

	logic.ReturnSuccessResponse(w, r, "user account disabled")
}

// @Summary     Get a user's preferences and settings
// @Router      /api/users/{username}/settings [get]
// @Tags        Users
// @Param       username path string true "Username of the user"
// @Success     200 {object} models.SuccessResponse
func getUserSettings(w http.ResponseWriter, r *http.Request) {
	userID := r.Header.Get("user")
	userSettings := logic.GetUserSettings(userID)
	logic.ReturnSuccessResponseWithJson(w, r, userSettings, "fetched user settings")
}

// @Summary     Update a user's preferences and settings
// @Router      /api/users/{username}/settings [put]
// @Tags        Users
// @Param       username path string true "Username of the user"
// @Success     200 {object} models.SuccessResponse
// @Failure     400 {object} models.ErrorResponse
// @Failure     500 {object} models.ErrorResponse
func updateUserSettings(w http.ResponseWriter, r *http.Request) {
	userID := r.Header.Get("user")
	var req models.UserSettings
	err := json.NewDecoder(r.Body).Decode(&req)
	if err != nil {
		logger.Log(0, "failed to decode request body: ", err.Error())
		err = fmt.Errorf("invalid request body: %v", err)
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}

	err = logic.UpsertUserSettings(userID, req)
	if err != nil {
		err = fmt.Errorf("failed to update user settings: %v", err.Error())
		logger.Log(0, err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
		return
	}

	logic.ReturnSuccessResponseWithJson(w, r, req, "updated user settings")
}

// swagger:route GET /api/v1/users user getUserV1
//
// Get an individual user with role info.
//
//			Schemes: https
//
//			Security:
//	  		oauth
//
//			Responses:
//				200: ReturnUserWithRolesAndGroups
func getUserV1(w http.ResponseWriter, r *http.Request) {
	// set header.
	w.Header().Set("Content-Type", "application/json")
	usernameFetched := r.URL.Query().Get("username")
	if usernameFetched == "" {
		logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("username is required"), "badrequest"))
		return
	}
	user, err := logic.GetReturnUser(usernameFetched)
	if err != nil {
		logger.Log(0, usernameFetched, "failed to fetch user: ", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
		return
	}
	user.NumAccessTokens, _ = (&schema.UserAccessToken{
		UserName: user.UserName,
	}).CountByUser(r.Context())
	userRoleTemplate, err := logic.GetRole(user.PlatformRoleID)
	if err != nil {
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
		return
	}
	resp := models.ReturnUserWithRolesAndGroups{
		ReturnUser:   user,
		PlatformRole: userRoleTemplate,
		UserGroups:   map[models.UserGroupID]models.UserGroup{},
	}
	for gId := range user.UserGroups {
		grp, err := logic.GetUserGroup(gId)
		if err == nil {
			resp.UserGroups[gId] = grp
		}
	}
	logger.Log(2, r.Header.Get("user"), "fetched user", usernameFetched)
	logic.ReturnSuccessResponseWithJson(w, r, resp, "fetched user with role info")
}

// swagger:route GET /api/users user getUsers
//
// Get all users.
//
//			Schemes: https
//
//			Security:
//	  		oauth
//
//			Responses:
//				200: userBodyResponse
func getUsers(w http.ResponseWriter, r *http.Request) {
	// set header.
	w.Header().Set("Content-Type", "application/json")

	users, err := logic.GetUsers()
	if err != nil {
		logger.Log(0, "failed to fetch users: ", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
		return
	}
	for i := range users {
		users[i].NumAccessTokens, _ = (&schema.UserAccessToken{
			UserName: users[i].UserName,
		}).CountByUser(r.Context())
	}

	logic.SortUsers(users[:])
	logger.Log(2, r.Header.Get("user"), "fetched users")
	json.NewEncoder(w).Encode(users)
}

// @Summary     Create a super admin
// @Router      /api/users/adm/createsuperadmin [post]
// @Tags        Users
// @Param       body body models.User true "User details"
// @Success     200 {object} models.User
// @Failure     400 {object} models.ErrorResponse
// @Failure     500 {object} models.ErrorResponse
func createSuperAdmin(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "application/json")

	var u models.User

	err := json.NewDecoder(r.Body).Decode(&u)
	if err != nil {
		slog.Error("error decoding request body", "error", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}

	if !logic.IsBasicAuthEnabled() {
		logic.ReturnErrorResponse(
			w,
			r,
			logic.FormatError(fmt.Errorf("basic auth is disabled"), "badrequest"),
		)
		return
	}

	err = logic.CreateSuperAdmin(&u)
	if err != nil {
		slog.Error("failed to create admin", "error", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}
	logger.Log(1, u.UserName, "was made a super admin")
	json.NewEncoder(w).Encode(logic.ToReturnUser(u))
}

// @Summary     Transfer super admin role to another admin user
// @Router      /api/users/adm/transfersuperadmin/{username} [post]
// @Tags        Users
// @Param       username path string true "Username of the user to transfer super admin role"
// @Success     200 {object} models.User
// @Failure     403 {object} models.ErrorResponse
// @Failure     500 {object} models.ErrorResponse
func transferSuperAdmin(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "application/json")
	caller, err := logic.GetUser(r.Header.Get("user"))
	if err != nil {
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
	}
	if caller.PlatformRoleID != models.SuperAdminRole {
		logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("only superadmin can assign the superadmin role to another user"), "forbidden"))
		return
	}
	var params = mux.Vars(r)
	username := params["username"]
	u, err := logic.GetUser(username)
	if err != nil {
		slog.Error("error getting user", "user", u.UserName, "error", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}
	if u.PlatformRoleID != models.AdminRole {
		logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("only admins can be promoted to superadmin role"), "forbidden"))
		return
	}
	if !logic.IsBasicAuthEnabled() {
		logic.ReturnErrorResponse(
			w,
			r,
			logic.FormatError(fmt.Errorf("basic auth is disabled"), "badrequest"),
		)
		return
	}

	u.IsSuperAdmin = true
	u.PlatformRoleID = models.SuperAdminRole
	err = logic.UpsertUser(*u)
	if err != nil {
		slog.Error("error updating user to superadmin: ", "user", u.UserName, "error", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
		return
	}

	caller.IsSuperAdmin = false
	caller.PlatformRoleID = models.AdminRole
	err = logic.UpsertUser(*caller)
	if err != nil {
		slog.Error("error demoting user to admin: ", "user", caller.UserName, "error", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
		return
	}
	slog.Info("user was made a super admin", "user", u.UserName)
	json.NewEncoder(w).Encode(logic.ToReturnUser(*u))
}

// @Summary     Create a user
// @Router      /api/users/{username} [post]
// @Tags        Users
// @Param       username path string true "Username of the user to create"
// @Param       body body models.User true "User details"
// @Success     200 {object} models.User
// @Failure     400 {object} models.ErrorResponse
// @Failure     403 {object} models.ErrorResponse
// @Failure     500 {object} models.ErrorResponse
func createUser(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "application/json")
	caller, err := logic.GetUser(r.Header.Get("user"))
	if err != nil {
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}
	var user models.User
	err = json.NewDecoder(r.Body).Decode(&user)
	if err != nil {
		logger.Log(0, user.UserName, "error decoding request body: ",
			err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}
	if !servercfg.IsPro {
		user.PlatformRoleID = models.AdminRole
	}
	if user.UserName == logic.MasterUser {
		logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("username not allowed"), "badrequest"))
		return
	}

	if user.PlatformRoleID == "" {
		logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("platform role is missing"), "badrequest"))
		return
	}
	userRole, err := logic.GetRole(user.PlatformRoleID)
	if err != nil {
		err = errors.New("error fetching role " + user.PlatformRoleID.String() + " " + err.Error())
		slog.Error("error creating new user: ", "user", user.UserName, "error", err)
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}
	if userRole.ID == models.SuperAdminRole {
		err = errors.New("additional superadmins cannot be created")
		slog.Error("error creating new user: ", "user", user.UserName, "error", err)
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "forbidden"))
		return
	}

	if caller.PlatformRoleID != models.SuperAdminRole && user.PlatformRoleID == models.AdminRole {
		err = errors.New("only superadmin can create admin users")
		slog.Error("error creating new user: ", "user", user.UserName, "error", err)
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "forbidden"))
		return
	}

	if !servercfg.IsPro && user.PlatformRoleID != models.AdminRole {
		logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("non-admins users can only be created on Pro version"), "forbidden"))
		return
	}

	err = logic.CreateUser(&user)
	if err != nil {
		slog.Error("error creating new user: ", "user", user.UserName, "error", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}
	logic.LogEvent(&models.Event{
		Action: models.Create,
		Source: models.Subject{
			ID:   caller.UserName,
			Name: caller.UserName,
			Type: models.UserSub,
		},
		TriggeredBy: caller.UserName,
		Target: models.Subject{
			ID:   user.UserName,
			Name: user.UserName,
			Type: models.UserSub,
			Info: user,
		},
		Origin: models.Dashboard,
	})
	logic.DeleteUserInvite(user.UserName)
	logic.DeletePendingUser(user.UserName)
	go mq.PublishPeerUpdate(false)
	slog.Info("user was created", "username", user.UserName)
	json.NewEncoder(w).Encode(logic.ToReturnUser(user))
}

// @Summary     Update a user
// @Router      /api/users/{username} [put]
// @Tags        Users
// @Param       username path string true "Username of the user to update"
// @Param       body body models.User true "User details"
// @Success     200 {object} models.User
// @Failure     400 {object} models.ErrorResponse
// @Failure     403 {object} models.ErrorResponse
// @Failure     500 {object} models.ErrorResponse
func updateUser(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "application/json")
	var params = mux.Vars(r)
	// start here
	var caller *models.User
	var err error
	var ismaster bool
	if r.Header.Get("user") == logic.MasterUser {
		ismaster = true
	} else {
		caller, err = logic.GetUser(r.Header.Get("user"))
		if err != nil {
			logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
		}
	}

	username := params["username"]
	user, err := logic.GetUser(username)
	if err != nil {
		logger.Log(0, username,
			"failed to update user info: ", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
		return
	}
	var userchange models.User
	// we decode our body request params
	err = json.NewDecoder(r.Body).Decode(&userchange)
	if err != nil {
		slog.Error("failed to decode body", "error ", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}
	if user.UserName != userchange.UserName {
		logic.ReturnErrorResponse(
			w,
			r,
			logic.FormatError(
				errors.New("user in param and request body not matching"),
				"badrequest",
			),
		)
		return
	}
	selfUpdate := false
	if !ismaster && caller.UserName == user.UserName {
		selfUpdate = true
	}

	if !ismaster && !selfUpdate {
		if caller.PlatformRoleID == models.AdminRole && user.PlatformRoleID == models.SuperAdminRole {
			slog.Error("non-superadmin user", "caller", caller.UserName, "attempted to update superadmin user", username)
			logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("cannot update superadmin user"), "forbidden"))
			return
		}
		if caller.PlatformRoleID != models.AdminRole && caller.PlatformRoleID != models.SuperAdminRole {
			slog.Error("operation not allowed", "caller", caller.UserName, "attempted to update user", username)
			logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("cannot update superadmin user"), "forbidden"))
			return
		}
		if caller.PlatformRoleID == models.AdminRole && user.PlatformRoleID == models.AdminRole {
			slog.Error("an admin user does not have permissions to update another admin user", "caller", caller.UserName, "attempted to update admin user", username)
			logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("an admin user does not have permissions to update another admin user"), "forbidden"))
			return
		}
		if caller.PlatformRoleID == models.AdminRole && userchange.PlatformRoleID == models.AdminRole {
			err = errors.New("an admin user does not have permissions to assign the admin role to another user")
			slog.Error(
				"failed to update user",
				"caller",
				caller.UserName,
				"attempted to update user",
				username,
				"error",
				err,
			)
			logic.ReturnErrorResponse(w, r, logic.FormatError(err, "forbidden"))
			return
		}

	}
	if !ismaster && selfUpdate {
		if user.PlatformRoleID != userchange.PlatformRoleID {
			slog.Error("user cannot change his own role", "caller", caller.UserName, "attempted to update user role", username)
			logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("user not allowed to self assign role"), "forbidden"))
			return

		}

		if logic.IsMFAEnforced() && user.IsMFAEnabled && !userchange.IsMFAEnabled {
			err = errors.New("mfa is enforced, user cannot unset their own mfa")
			slog.Error("failed to update user", "caller", caller.UserName, "attempted to update user", username, "error", err)
			logic.ReturnErrorResponse(w, r, logic.FormatError(err, "forbidden"))
			return
		}

		if servercfg.IsPro {
			// user cannot update his own roles and groups
			if len(user.NetworkRoles) != len(userchange.NetworkRoles) || !reflect.DeepEqual(user.NetworkRoles, userchange.NetworkRoles) {
				err = errors.New("user cannot update self update their network roles")
				slog.Error("failed to update user", "caller", caller.UserName, "attempted to update user", username, "error", err)
				logic.ReturnErrorResponse(w, r, logic.FormatError(err, "forbidden"))
				return
			}
			// user cannot update his own roles and groups
			if len(user.UserGroups) != len(userchange.UserGroups) || !reflect.DeepEqual(user.UserGroups, userchange.UserGroups) {
				err = errors.New("user cannot update self update their groups")
				slog.Error("failed to update user", "caller", caller.UserName, "attempted to update user", username, "error", err)
				logic.ReturnErrorResponse(w, r, logic.FormatError(err, "forbidden"))
				return
			}
		}
	}
	if ismaster {
		if user.PlatformRoleID != models.SuperAdminRole && userchange.PlatformRoleID == models.SuperAdminRole {
			slog.Error("operation not allowed", "caller", logic.MasterUser, "attempted to update user role to superadmin", username)
			logic.ReturnErrorResponse(w, r, logic.FormatError(errors.New("attempted to update user role to superadmin"), "forbidden"))
			return
		}
	}

	if logic.IsOauthUser(user) == nil && userchange.Password != "" {
		err := fmt.Errorf("cannot update user's password for an oauth user %s", username)
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "forbidden"))
		return
	}
	logic.AddGlobalNetRolesToAdmins(&userchange)
	if userchange.PlatformRoleID != user.PlatformRoleID || !logic.CompareMaps(user.UserGroups, userchange.UserGroups) {
		(&schema.UserAccessToken{UserName: user.UserName}).DeleteAllUserTokens(r.Context())
	}
	oldUser := *user
	if ismaster {
		caller = &models.User{
			UserName: logic.MasterUser,
		}
	}
	action := models.Update
	// TODO: here we are relying on the dashboard to only
	// make singular updates, but it's possible that the
	// API can be called to make multiple changes to the
	// user. We should update it to log multiple events
	// or create singular update APIs.
	if userchange.IsMFAEnabled != user.IsMFAEnabled {
		if userchange.IsMFAEnabled {
			// the update API won't be used to enable MFA.
			action = models.EnableMFA
		} else {
			action = models.DisableMFA
		}
	}
	e := models.Event{
		Action: action,
		Source: models.Subject{
			ID:   caller.UserName,
			Name: caller.UserName,
			Type: models.UserSub,
		},
		TriggeredBy: caller.UserName,
		Target: models.Subject{
			ID:   user.UserName,
			Name: user.UserName,
			Type: models.UserSub,
		},
		Diff: models.Diff{
			Old: oldUser,
			New: userchange,
		},
		Origin: models.Dashboard,
	}
	user, err = logic.UpdateUser(&userchange, user)
	if err != nil {
		logger.Log(0, username,
			"failed to update user info: ", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}
	logic.LogEvent(&e)
	go mq.PublishPeerUpdate(false)
	go func() {
		// Populating all the networks the user has access to by
		// being a member of groups.
		userMembershipNetworkAccess := make(map[models.NetworkID]struct{})
		for groupID := range user.UserGroups {
			userGroup, _ := logic.GetUserGroup(groupID)
			for netID := range userGroup.NetworkRoles {
				userMembershipNetworkAccess[netID] = struct{}{}
			}
		}

		extclients, err := logic.GetAllExtClients()
		if err != nil {
			slog.Error("failed to fetch extclients", "error", err)
			return
		}

		for _, extclient := range extclients {
			if extclient.OwnerID != user.UserName {
				continue
			}

			var shouldDelete bool
			if user.PlatformRoleID == models.SuperAdminRole || user.PlatformRoleID == models.AdminRole {
				// Super-admin and Admin's access is not determined by group membership
				// or network roles. Even if a user is removed from the group, they
				// continue to have access to the network.
				// So, no need to delete the extclient.
				shouldDelete = false
			} else {
				_, hasAccess := user.NetworkRoles[models.NetworkID(extclient.Network)]
				if hasAccess {
					// The user has access to the network by themselves and not by
					// virtue of being a member of the group.
					// So, no need to delete the extclient.
					shouldDelete = false
				} else {
					_, hasAccessThroughGroups := userMembershipNetworkAccess[models.NetworkID(extclient.Network)]
					if !hasAccessThroughGroups {
						// The user does not have access to the network by either
						// being a Super-admin or Admin, by network roles or by virtue
						// of being a member a group that has access to the network.
						// So, delete the extclient.
						shouldDelete = true
					}
				}
			}

			if shouldDelete {
				err = logic.DeleteExtClientAndCleanup(extclient)
				if err != nil {
					slog.Error("failed to delete extclient",
						"id", extclient.ClientID, "owner", user.UserName, "error", err)
				} else {
					if err := mq.PublishDeletedClientPeerUpdate(&extclient); err != nil {
						slog.Error("error setting ext peers: " + err.Error())
					}
				}
			}
		}
	}()
	logger.Log(1, username, "was updated")
	json.NewEncoder(w).Encode(logic.ToReturnUser(*user))
}

// @Summary     Delete a user
// @Router      /api/users/{username} [delete]
// @Tags        Users
// @Param       username path string true "Username of the user to delete"
// @Success     200 {string} string
// @Failure     500 {object} models.ErrorResponse
func deleteUser(w http.ResponseWriter, r *http.Request) {
	// Set header
	w.Header().Set("Content-Type", "application/json")

	// get params
	var params = mux.Vars(r)
	caller, err := logic.GetUser(r.Header.Get("user"))
	if err != nil {
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
	}
	callerUserRole, err := logic.GetRole(caller.PlatformRoleID)
	if err != nil {
		slog.Error("failed to get role ", "role", callerUserRole.ID, "error", err)
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
		return
	}
	username := params["username"]
	user, err := logic.GetUser(username)
	if err != nil {
		logger.Log(0, username,
			"failed to update user info: ", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
		return
	}
	userRole, err := logic.GetRole(user.PlatformRoleID)
	if err != nil {
		slog.Error("failed to get role ", "role", userRole.ID, "error", err)
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
		return
	}
	if userRole.ID == models.SuperAdminRole {
		slog.Error(
			"failed to delete user: ", "user", username, "error", "superadmin cannot be deleted")
		logic.ReturnErrorResponse(
			w,
			r,
			logic.FormatError(fmt.Errorf("superadmin cannot be deleted"), "internal"),
		)
		return
	}
	if callerUserRole.ID != models.SuperAdminRole {
		if callerUserRole.ID == models.AdminRole && userRole.ID == models.AdminRole {
			slog.Error(
				"failed to delete user: ",
				"user",
				username,
				"error",
				"admin cannot delete another admin user, including oneself",
			)
			logic.ReturnErrorResponse(
				w,
				r,
				logic.FormatError(
					fmt.Errorf("admin cannot delete another admin user, including oneself"),
					"internal",
				),
			)
			return
		}
	}

	if user.AuthType == models.OAuth || user.ExternalIdentityProviderID != "" {
		err = fmt.Errorf("cannot delete idp user %s", username)
		logger.Log(0, username, "failed to delete user: ", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))
		return
	}

	err = logic.DeleteUser(username)
	if err != nil {
		logger.Log(0, username,
			"failed to delete user: ", err.Error())
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "internal"))
		return
	}
	logic.LogEvent(&models.Event{
		Action: models.Delete,
		Source: models.Subject{
			ID:   caller.UserName,
			Name: caller.UserName,
			Type: models.UserSub,
		},
		TriggeredBy: caller.UserName,
		Target: models.Subject{
			ID:   user.UserName,
			Name: user.UserName,
			Type: models.UserSub,
		},
		Origin: models.Dashboard,
		Diff: models.Diff{
			Old: user,
			New: nil,
		},
	})
	// check and delete extclient with this ownerID
	go func() {
		extclients, err := logic.GetAllExtClients()
		if err != nil {
			slog.Error("failed to get extclients", "error", err)
			return
		}
		for _, extclient := range extclients {
			if extclient.OwnerID == user.UserName {
				err = logic.DeleteExtClientAndCleanup(extclient)
				if err != nil {
					slog.Error("failed to delete extclient",
						"id", extclient.ClientID, "owner", username, "error", err)
				} else {
					if err := mq.PublishDeletedClientPeerUpdate(&extclient); err != nil {
						slog.Error("error setting ext peers: " + err.Error())
					}
				}
			}
		}
		_ = logic.DeleteUserInvite(user.UserName)
		mq.PublishPeerUpdate(false)
		if servercfg.IsDNSMode() {
			logic.SetDNS()
		}
	}()
	logger.Log(1, username, "was deleted")
	json.NewEncoder(w).Encode(params["username"] + " deleted.")
}

// Called when vpn client dials in to start the auth flow and first stage is to get register URL itself
func socketHandler(w http.ResponseWriter, r *http.Request) {
	// Upgrade our raw HTTP connection to a websocket based one
	conn, err := upgrader.Upgrade(w, r, nil)
	if err != nil {
		logger.Log(0, "error during connection upgrade for node sign-in:", err.Error())
		return
	}
	if conn == nil {
		logger.Log(0, "failed to establish web-socket connection during node sign-in")
		return
	}
	// Start handling the session
	go auth.SessionHandler(conn)
}

// @Summary     lists all user roles.
// @Router      /api/v1/user/roles [get]
// @Tags        Users
// @Param       role_id query string true "roleid required to get the role details"
// @Success     200 {object}  []models.UserRolePermissionTemplate
// @Failure     500 {object} models.ErrorResponse
func listRoles(w http.ResponseWriter, r *http.Request) {
	var roles []models.UserRolePermissionTemplate
	var err error
	roles, err = logic.ListPlatformRoles()
	if err != nil {
		logic.ReturnErrorResponse(w, r, models.ErrorResponse{
			Code:    http.StatusInternalServerError,
			Message: err.Error(),
		})
		return
	}

	logic.ReturnSuccessResponseWithJson(w, r, roles, "successfully fetched user roles permission templates")
}

// swagger:route POST /api/v1/user/logout user logout
//
// LogOut user.
//
//			Schemes: https
//
//			Security:
//	  		oauth
//
//			Responses:
//				200: userBodyResponse
func logout(w http.ResponseWriter, r *http.Request) {
	// set header.
	w.Header().Set("Content-Type", "application/json")
	userName := r.URL.Query().Get("username")
	user, err := logic.GetUser(userName)
	if err != nil {
		logic.ReturnErrorResponse(w, r, logic.FormatError(err, logic.BadReq))
		return
	}
	var target models.SubjectType
	if val := r.Header.Get("From-Ui"); val == "true" {
		target = models.DashboardSub
	} else {
		target = models.ClientAppSub
	}
	if target != "" {
		logic.LogEvent(&models.Event{
			Action: models.LogOut,
			Source: models.Subject{
				ID:   user.UserName,
				Name: user.UserName,
				Type: models.UserSub,
			},
			TriggeredBy: user.UserName,
			Target: models.Subject{
				ID:   target.String(),
				Name: target.String(),
				Type: target,
			},
			Origin: models.Origin(target),
		})
	}

	logic.ReturnSuccessResponse(w, r, "user logged out")
}