// backend\milestone_sync.go

package main

import (
	"context"
	"encoding/json"
	"errors"
	"fmt"
	"io"
	"log"
	"net/http"
	"net/url"
	"strings"
	"time"

	"github.com/jackc/pgx/v5"
)

type milestoneSyncResult struct {
	TokenReceived          bool      `json:"tokenReceived"`
	TokenType              string    `json:"tokenType"`
	TokenExpiresAt         time.Time `json:"tokenExpiresAt"`
	RecordingServerID      string    `json:"recordingServerId"`
	RecordingServerName    string    `json:"recordingServerName"`
	RecordingServerVersion string    `json:"recordingServerVersion"`
	HardwareCount          int       `json:"hardwareCount"`
}

type milestoneSyncEvent struct {
	Type                   string                     `json:"type"`
	Message                string                     `json:"message,omitempty"`
	TokenType              string                     `json:"tokenType,omitempty"`
	TokenExpiresAt         *time.Time                 `json:"tokenExpiresAt,omitempty"`
	RecordingServerID      string                     `json:"recordingServerId,omitempty"`
	RecordingServerName    string                     `json:"recordingServerName,omitempty"`
	RecordingServerVersion string                     `json:"recordingServerVersion,omitempty"`
	HardwareCount          int                        `json:"hardwareCount,omitempty"`
	Settings               *milestoneSettingsResponse `json:"settings,omitempty"`
}

type milestoneRecordingServersResponse struct {
	Array []milestoneRecordingServer `json:"array"`
}

type milestoneRecordingServer struct {
	ID                     string `json:"id"`
	Name                   string `json:"name"`
	DisplayName            string `json:"displayName"`
	Version                string `json:"version"`
	ProductVersion         string `json:"productVersion"`
	RecordingServerVersion string `json:"recordingServerVersion"`
}

type milestoneHardwareResponse struct {
	Array []milestoneHardware `json:"array"`
}

type milestoneHardware struct {
	ID          string             `json:"id"`
	Name        string             `json:"name"`
	DisplayName string             `json:"displayName"`
	DeviceName  string             `json:"deviceName"`
	Address     string             `json:"address"`
	Enabled     *bool              `json:"enabled"`
	Disabled    *bool              `json:"disabled"`
	Relations   milestoneRelations `json:"relations"`
}

type milestoneRelations struct {
	Parent milestoneRelationRef `json:"parent"`
	Self   milestoneRelationRef `json:"self"`
}

type milestoneRelationRef struct {
	Type string `json:"type"`
	ID   string `json:"id"`
}

type milestoneHardwareDriverSettingsResponse struct {
	Array []milestoneHardwareDriverSettingsItem `json:"array"`
}

type milestoneHardwareDriverSettingsItem struct {
	DisplayName            string                          `json:"displayName"`
	HardwareDriverSettings milestoneHardwareDriverSettings `json:"hardwareDriverSettings"`
	Relations              milestoneRelations              `json:"relations"`
}

type milestoneHardwareDriverSettings struct {
	DetectedModelName  string `json:"detectedModelName"`
	ProductID          string `json:"productID"`
	MacAddress         string `json:"macAddress"`
	IPAddress          string `json:"ipAddress"`
	Address            string `json:"address"`
	HostName           string `json:"hostName"`
	DeviceModelName    string `json:"deviceModelName"`
	DeviceManufacturer string `json:"deviceManufacturer"`
	FirmwareVersion    string `json:"firmwareVersion"`
	SerialNumber       string `json:"serialNumber"`
}

type milestoneHardwareDevice struct {
	HardwareID        string
	RecordingServerID string
	DisplayName       string
	DeviceName        string
	Manufacturer      string
	MacAddress        string
	IPAddress         string
	Port              string
	DeviceModelName   string
	SerialNumber      string
	FirmwareVersion   string
	Enabled           bool
	Cameras           []milestoneNamedDevice
	Microphones       []milestoneNamedDevice
}

func writeMilestoneSyncEvent(w http.ResponseWriter, event milestoneSyncEvent) {
	if err := json.NewEncoder(w).Encode(event); err != nil {
		log.Printf("Milestone sync stream event could not be written: %v", err)
		return
	}

	if flusher, ok := w.(http.Flusher); ok {
		flusher.Flush()
	}
}

func emitMilestoneSyncEvent(
	progress func(milestoneSyncEvent),
	event milestoneSyncEvent,
) {
	if progress != nil {
		progress(event)
	}
}

func (s *Server) refreshMilestoneTokenAndServerID(
	ctx context.Context,
	credentials milestoneCredentials,
) (milestoneSyncResult, error) {
	return s.refreshMilestoneTokenAndServerIDWithProgress(ctx, credentials, nil)
}

func (s *Server) refreshMilestoneTokenAndServerIDWithProgress(
	ctx context.Context,
	credentials milestoneCredentials,
	progress func(milestoneSyncEvent),
) (milestoneSyncResult, error) {
	var syncResult milestoneSyncResult

	tokenResponse, err := s.requestMilestoneToken(ctx, credentials)
	if err != nil {
		return syncResult, err
	}

	accessToken := strings.TrimSpace(tokenResponse.AccessToken)
	if accessToken == "" {
		return syncResult, errors.New("milestone returned empty access token")
	}

	tokenType := strings.TrimSpace(tokenResponse.TokenType)
	if tokenType == "" {
		tokenType = "Bearer"
	}

	expiresIn := tokenResponse.ExpiresIn
	if expiresIn <= 0 {
		expiresIn = 3600
	}

	tokenExpiresAt := time.Now().Add(time.Duration(expiresIn) * time.Second)

	syncResult.TokenReceived = true
	syncResult.TokenType = tokenType
	syncResult.TokenExpiresAt = tokenExpiresAt

	emitMilestoneSyncEvent(progress, milestoneSyncEvent{
		Type:           "token",
		TokenType:      tokenType,
		TokenExpiresAt: &tokenExpiresAt,
	})

	serverID, serverName, serverVersion, err := s.requestMilestoneServerID(
		ctx,
		credentials.Host,
		tokenType,
		accessToken,
		credentials.SkipTLSVerify,
	)
	if err != nil {
		return syncResult, err
	}

	syncResult.RecordingServerID = serverID
	syncResult.RecordingServerName = serverName
	syncResult.RecordingServerVersion = serverVersion

	emitMilestoneSyncEvent(progress, milestoneSyncEvent{
		Type:                   "recordingServer",
		RecordingServerID:      serverID,
		RecordingServerName:    serverName,
		RecordingServerVersion: serverVersion,
	})

	hardwareDevices, err := s.requestMilestoneHardwareDevices(
		ctx,
		credentials.Host,
		serverID,
		accessToken,
		credentials.SkipTLSVerify,
	)
	if err != nil {
		return syncResult, err
	}

	tx, err := s.db.Begin(ctx)
	if err != nil {
		return syncResult, err
	}
	defer tx.Rollback(ctx)

	encryptionKey := s.milestoneEncryptionKey()

	_, err = tx.Exec(
		ctx,
		`
		UPDATE milestone_settings
		SET
			access_token_encrypted = pgp_sym_encrypt($1, $2),
			token_type = $3,
			token_expires_at = $4,
			token_updated_at = now(),
			server_id = $5,
			server_name = $6,
			server_version = $7,
			server_updated_at = now(),
			updated_at = now()
		WHERE id = 1
		`,
		accessToken,
		encryptionKey,
		tokenType,
		tokenExpiresAt,
		serverID,
		serverName,
		serverVersion,
	)
	if err != nil {
		return syncResult, err
	}

	syncedHardwareCount, err := syncMilestoneHardwareDevices(ctx, tx, hardwareDevices)
	if err != nil {
		return syncResult, err
	}

	syncResult.HardwareCount = syncedHardwareCount

	if err := tx.Commit(ctx); err != nil {
		return syncResult, err
	}

	emitMilestoneSyncEvent(progress, milestoneSyncEvent{
		Type:          "hardware",
		HardwareCount: syncResult.HardwareCount,
	})

	log.Printf(
		"Milestone sync completed successfully: recordingServerId=%s hardwareDevices=%d",
		serverID,
		syncedHardwareCount,
	)

	return syncResult, nil
}

func (s *Server) requestMilestoneServerID(
	ctx context.Context,
	host string,
	tokenType string,
	accessToken string,
	skipTLSVerify bool,
) (string, string, string, error) {
	requestURL := strings.TrimRight(host, "/") + "/API/rest/v1/recordingServers"

	log.Printf(
		"Requesting Milestone recording server id: url=%s skipTLSVerify=%t",
		requestURL,
		skipTLSVerify,
	)

	request, err := http.NewRequestWithContext(
		ctx,
		http.MethodGet,
		requestURL,
		nil,
	)
	if err != nil {
		return "", "", "", err
	}

	if tokenType == "" {
		tokenType = "Bearer"
	}

	request.Header.Set("Authorization", tokenType+" "+accessToken)
	request.Header.Set("Accept", "application/json")

	client := milestoneHTTPClient(skipTLSVerify)

	response, err := client.Do(request)
	if err != nil {
		return "", "", "", err
	}
	defer response.Body.Close()

	body, err := io.ReadAll(response.Body)
	if err != nil {
		return "", "", "", err
	}

	if response.StatusCode < 200 || response.StatusCode >= 300 {
		return "", "", "", fmt.Errorf(
			"milestone recording servers request failed: url=%s status=%d body=%s",
			requestURL,
			response.StatusCode,
			truncateMilestoneLogBody(body),
		)
	}

	var recordingServersResponse milestoneRecordingServersResponse
	if err := json.Unmarshal(body, &recordingServersResponse); err != nil {
		return "", "", "", fmt.Errorf(
			"milestone recording servers response could not be parsed: body=%s error=%w",
			truncateMilestoneLogBody(body),
			err,
		)
	}

	if len(recordingServersResponse.Array) == 0 {
		return "", "", "", fmt.Errorf(
			"milestone returned no recording servers: body=%s",
			truncateMilestoneLogBody(body),
		)
	}

	recordingServer := recordingServersResponse.Array[0]

	recordingServerID := strings.TrimSpace(recordingServer.ID)
	recordingServerName := strings.TrimSpace(recordingServer.DisplayName)

	if recordingServerName == "" {
		recordingServerName = strings.TrimSpace(recordingServer.Name)
	}

	recordingServerVersion := strings.TrimSpace(recordingServer.Version)

	if recordingServerVersion == "" {
		recordingServerVersion = strings.TrimSpace(recordingServer.ProductVersion)
	}

	if recordingServerVersion == "" {
		recordingServerVersion = strings.TrimSpace(recordingServer.RecordingServerVersion)
	}

	if recordingServerID == "" {
		return "", "", "", fmt.Errorf(
			"milestone returned recording server without id: body=%s",
			truncateMilestoneLogBody(body),
		)
	}

	log.Printf(
		"Milestone recording server received successfully: id=%s displayName=%q version=%q",
		recordingServerID,
		recordingServerName,
		recordingServerVersion,
	)

	return recordingServerID, recordingServerName, recordingServerVersion, nil
}

func (s *Server) requestMilestoneHardwareDevices(
	ctx context.Context,
	host string,
	recordingServerID string,
	accessToken string,
	skipTLSVerify bool,
) ([]milestoneHardwareDevice, error) {
	hardwareItems, err := s.requestMilestoneHardware(
		ctx,
		host,
		recordingServerID,
		accessToken,
		skipTLSVerify,
	)
	if err != nil {
		return nil, err
	}

	result := make([]milestoneHardwareDevice, 0, len(hardwareItems))

	for _, hardware := range hardwareItems {
		hardwareID := strings.TrimSpace(hardware.ID)
		if hardwareID == "" {
			hardwareID = strings.TrimSpace(hardware.Relations.Self.ID)
		}

		if hardwareID == "" {
			log.Printf("Milestone hardware skipped: missing hardware id")
			continue
		}

		settings, err := s.requestMilestoneHardwareDriverSettings(
			ctx,
			host,
			hardwareID,
			accessToken,
			skipTLSVerify,
		)
		if err != nil {
			return nil, err
		}

		hardwareDetails, err := s.requestMilestoneHardwareDetails(
			ctx,
			host,
			hardwareID,
			accessToken,
			skipTLSVerify,
		)
		if err != nil {
			return nil, err
		}

		displayName := strings.TrimSpace(hardware.DisplayName)
		if displayName == "" {
			displayName = strings.TrimSpace(hardware.Name)
		}

		model := strings.TrimSpace(settings.DeviceModelName)
		if model == "" {
			model = strings.TrimSpace(settings.DetectedModelName)
		}

		manufacturer := normalizeMilestoneManufacturer(
			settings.DeviceManufacturer,
			model,
		)

		if manufacturer == "" {
			manufacturer = normalizeMilestoneManufacturer(
				settings.ProductID,
				model,
			)
		}

		if manufacturer == "" {
			manufacturer = extractMilestoneManufacturerFromName(model)
		}

		deviceName := strings.TrimSpace(hardware.DeviceName)
		if deviceName == "" {
			deviceName = displayName
		}

		enabled := true

		if hardware.Enabled != nil {
			enabled = *hardware.Enabled
		}

		if hardware.Disabled != nil {
			enabled = !*hardware.Disabled
		}

		hardwareAddress := strings.TrimSpace(milestoneStringValue(hardwareDetails["address"]))
		if hardwareAddress == "" {
			hardwareAddress = hardware.Address
		}

		ipAddress, port := extractMilestoneHardwareAddressParts(hardwareAddress)

		embeddedCameras := milestoneNamedDevicesFromHardwareCollection(
			hardwareDetails,
			"cameras",
		)

		embeddedMicrophones := milestoneNamedDevicesFromHardwareCollection(
			hardwareDetails,
			"microphones",
		)

		camerasWithDisabled, err := s.requestMilestoneNamedDevicesByHardware(
			ctx,
			host,
			"cameras",
			hardwareID,
			accessToken,
			skipTLSVerify,
		)
		if err != nil {
			return nil, err
		}

		microphonesWithDisabled, err := s.requestMilestoneNamedDevicesByHardware(
			ctx,
			host,
			"microphones",
			hardwareID,
			accessToken,
			skipTLSVerify,
		)
		if err != nil {
			return nil, err
		}

		cameras := mergeMilestoneNamedDevices(
			embeddedCameras,
			camerasWithDisabled,
		)

		microphones := mergeMilestoneNamedDevices(
			embeddedMicrophones,
			microphonesWithDisabled,
		)

		result = append(result, milestoneHardwareDevice{
			HardwareID:        hardwareID,
			RecordingServerID: recordingServerID,
			DisplayName:       displayName,
			DeviceName:        deviceName,
			Manufacturer:      manufacturer,
			MacAddress:        strings.TrimSpace(settings.MacAddress),
			IPAddress:         ipAddress,
			Port:              port,
			DeviceModelName:   model,
			SerialNumber:      strings.TrimSpace(settings.SerialNumber),
			FirmwareVersion:   strings.TrimSpace(settings.FirmwareVersion),
			Enabled:           enabled,
			Cameras:           cameras,
			Microphones:       microphones,
		})
	}

	cameraCount := 0
	microphoneCount := 0

	for _, hardwareDevice := range result {
		cameraCount += len(hardwareDevice.Cameras)
		microphoneCount += len(hardwareDevice.Microphones)
	}

	log.Printf(
		"Milestone hardware loaded successfully: recordingServerId=%s count=%d cameras=%d microphones=%d",
		recordingServerID,
		len(result),
		cameraCount,
		microphoneCount,
	)

	return result, nil
}

func (s *Server) requestMilestoneNamedDevicesByHardware(
	ctx context.Context,
	host string,
	collection string,
	hardwareID string,
	accessToken string,
	skipTLSVerify bool,
) ([]milestoneNamedDevice, error) {
	switch collection {
	case "cameras", "microphones":
	default:
		return nil, fmt.Errorf("unsupported milestone device collection: %s", collection)
	}

	requestURL := strings.TrimRight(host, "/") +
		"/API/rest/v1/" +
		collection +
		"?disabled"

	log.Printf(
		"Requesting Milestone %s with disabled: url=%s hardwareId=%s skipTLSVerify=%t",
		collection,
		requestURL,
		hardwareID,
		skipTLSVerify,
	)

	body, err := requestMilestoneJSON(
		ctx,
		requestURL,
		accessToken,
		skipTLSVerify,
	)
	if err != nil {
		return nil, err
	}

	return milestoneNamedDevicesFromListResponse(body, collection, hardwareID)
}

func extractMilestoneHardwareIPAddress(value string) string {
	host, _ := extractMilestoneHardwareAddressParts(value)
	return host
}

func defaultMilestonePortForScheme(scheme string) string {
	switch strings.ToLower(strings.TrimSpace(scheme)) {
	case "https":
		return "443"
	case "http":
		return "80"
	default:
		return "80"
	}
}

func extractMilestoneHardwareAddressParts(value string) (string, string) {
	value = strings.TrimSpace(value)
	if value == "" {
		return "", ""
	}

	parsedURL, err := url.Parse(value)
	if err == nil && parsedURL.Hostname() != "" {
		scheme := strings.ToLower(strings.TrimSpace(parsedURL.Scheme))
		if scheme == "" {
			scheme = "http"
		}

		port := strings.TrimSpace(parsedURL.Port())
		if port == "" {
			port = defaultMilestonePortForScheme(scheme)
		}

		return strings.TrimSpace(parsedURL.Hostname()), port
	}

	scheme := "http"
	lowerValue := strings.ToLower(value)

	if strings.HasPrefix(lowerValue, "https://") {
		scheme = "https"
	}

	value = strings.TrimPrefix(value, "http://")
	value = strings.TrimPrefix(value, "https://")
	value = strings.TrimRight(value, "/")

	if host, port, found := strings.Cut(value, ":"); found {
		port = strings.TrimSpace(port)

		if isOnlyDigits(port) {
			return strings.TrimSpace(host), port
		}
	}

	return strings.TrimSpace(value), defaultMilestonePortForScheme(scheme)
}

func extractMilestoneHardwarePort(value string) string {
	_, port := extractMilestoneHardwareAddressParts(value)
	return port
}

func (s *Server) requestMilestoneHardware(
	ctx context.Context,
	host string,
	recordingServerID string,
	accessToken string,
	skipTLSVerify bool,
) ([]milestoneHardware, error) {
	requestURL := strings.TrimRight(host, "/") +
		"/API/rest/v1/recordingServers/" +
		url.PathEscape(recordingServerID) +
		"/hardware?disabled"

	log.Printf(
		"Requesting Milestone hardware: url=%s skipTLSVerify=%t",
		requestURL,
		skipTLSVerify,
	)

	body, err := requestMilestoneJSON(
		ctx,
		requestURL,
		accessToken,
		skipTLSVerify,
	)
	if err != nil {
		return nil, err
	}

	var hardwareResponse milestoneHardwareResponse
	if err := json.Unmarshal(body, &hardwareResponse); err != nil {
		return nil, fmt.Errorf(
			"milestone hardware response could not be parsed: body=%s error=%w",
			truncateMilestoneLogBody(body),
			err,
		)
	}

	return hardwareResponse.Array, nil
}

func (s *Server) requestMilestoneHardwareDetails(
	ctx context.Context,
	host string,
	hardwareID string,
	accessToken string,
	skipTLSVerify bool,
) (map[string]any, error) {
	requestURL := strings.TrimRight(host, "/") +
		"/API/rest/v1/hardware/" +
		url.PathEscape(hardwareID)

	log.Printf(
		"Requesting Milestone hardware details: url=%s skipTLSVerify=%t",
		requestURL,
		skipTLSVerify,
	)

	body, err := requestMilestoneJSON(
		ctx,
		requestURL,
		accessToken,
		skipTLSVerify,
	)
	if err != nil {
		return nil, err
	}

	var envelope milestoneHardwareUpdateEnvelope
	if err := json.Unmarshal(body, &envelope); err == nil && envelope.Data != nil {
		return envelope.Data, nil
	}

	var direct map[string]any
	if err := json.Unmarshal(body, &direct); err != nil {
		return nil, fmt.Errorf(
			"milestone hardware details response could not be parsed: body=%s error=%w",
			truncateMilestoneLogBody(body),
			err,
		)
	}

	if data, ok := direct["data"].(map[string]any); ok {
		return data, nil
	}

	return direct, nil
}

func (s *Server) requestMilestoneHardwareDriverSettings(
	ctx context.Context,
	host string,
	hardwareID string,
	accessToken string,
	skipTLSVerify bool,
) (milestoneHardwareDriverSettings, error) {
	requestURL := strings.TrimRight(host, "/") +
		"/API/rest/v1/hardware/" +
		url.PathEscape(hardwareID) +
		"/hardwareDriverSettings"

	log.Printf(
		"Requesting Milestone hardware driver settings: url=%s skipTLSVerify=%t",
		requestURL,
		skipTLSVerify,
	)

	body, err := requestMilestoneJSON(
		ctx,
		requestURL,
		accessToken,
		skipTLSVerify,
	)
	if err != nil {
		return milestoneHardwareDriverSettings{}, err
	}

	var settingsResponse milestoneHardwareDriverSettingsResponse
	if err := json.Unmarshal(body, &settingsResponse); err != nil {
		return milestoneHardwareDriverSettings{}, fmt.Errorf(
			"milestone hardware driver settings response could not be parsed: body=%s error=%w",
			truncateMilestoneLogBody(body),
			err,
		)
	}

	if len(settingsResponse.Array) == 0 {
		return milestoneHardwareDriverSettings{}, fmt.Errorf(
			"milestone returned no hardware driver settings: hardwareId=%s body=%s",
			hardwareID,
			truncateMilestoneLogBody(body),
		)
	}

	return settingsResponse.Array[0].HardwareDriverSettings, nil
}

func requestMilestoneJSON(
	ctx context.Context,
	requestURL string,
	accessToken string,
	skipTLSVerify bool,
) ([]byte, error) {
	request, err := http.NewRequestWithContext(
		ctx,
		http.MethodGet,
		requestURL,
		nil,
	)
	if err != nil {
		return nil, err
	}

	request.Header.Set("Authorization", "Bearer "+accessToken)
	request.Header.Set("Accept", "application/json")

	client := milestoneHTTPClient(skipTLSVerify)

	response, err := client.Do(request)
	if err != nil {
		return nil, err
	}
	defer response.Body.Close()

	body, err := io.ReadAll(response.Body)
	if err != nil {
		return nil, err
	}

	if response.StatusCode < 200 || response.StatusCode >= 300 {
		return nil, fmt.Errorf(
			"milestone request failed: url=%s status=%d body=%s",
			requestURL,
			response.StatusCode,
			truncateMilestoneLogBody(body),
		)
	}

	return body, nil
}

func syncMilestoneHardwareDevices(
	ctx context.Context,
	tx pgx.Tx,
	hardwareDevices []milestoneHardwareDevice,
) (int, error) {
	syncedCount := 0

	for _, hardwareDevice := range hardwareDevices {
		hardwareDevice.HardwareID = strings.TrimSpace(hardwareDevice.HardwareID)
		hardwareDevice.RecordingServerID = strings.TrimSpace(hardwareDevice.RecordingServerID)
		hardwareDevice.DisplayName = strings.TrimSpace(hardwareDevice.DisplayName)
		hardwareDevice.DeviceName = strings.TrimSpace(hardwareDevice.DeviceName)
		hardwareDevice.Manufacturer = strings.TrimSpace(hardwareDevice.Manufacturer)
		hardwareDevice.DeviceModelName = strings.TrimSpace(hardwareDevice.DeviceModelName)
		hardwareDevice.SerialNumber = strings.TrimSpace(hardwareDevice.SerialNumber)
		hardwareDevice.MacAddress = strings.TrimSpace(hardwareDevice.MacAddress)
		hardwareDevice.IPAddress = strings.TrimSpace(hardwareDevice.IPAddress)
		hardwareDevice.Port = strings.TrimSpace(hardwareDevice.Port)
		hardwareDevice.FirmwareVersion = strings.TrimSpace(hardwareDevice.FirmwareVersion)

		if hardwareDevice.HardwareID == "" {
			continue
		}

		if hardwareDevice.Manufacturer != "" {
			if err := ensureOptionalDeviceLookupValue(
				ctx,
				tx,
				"device_manufacturers",
				hardwareDevice.Manufacturer,
			); err != nil {
				return syncedCount, err
			}
		}

		synced, err := createOrUpdateMilestoneHardwareDevice(ctx, tx, hardwareDevice)
		if err != nil {
			return syncedCount, err
		}

		if err := syncMilestoneHardwareChildDevices(ctx, tx, hardwareDevice); err != nil {
			return syncedCount, err
		}

		if synced {
			syncedCount++
		}
	}

	return syncedCount, nil
}

func syncMilestoneHardwareChildDevices(
	ctx context.Context,
	tx pgx.Tx,
	hardwareDevice milestoneHardwareDevice,
) error {
	hardwareID := strings.TrimSpace(hardwareDevice.HardwareID)
	if hardwareID == "" {
		return nil
	}

	_, err := tx.Exec(
		ctx,
		`
		DELETE FROM milestone_hardware_child_devices
		WHERE milestone_hardware_id = $1
		`,
		hardwareID,
	)
	if err != nil {
		return err
	}

	for _, camera := range hardwareDevice.Cameras {
		if err := upsertMilestoneHardwareChildDevice(
			ctx,
			tx,
			hardwareID,
			"camera",
			camera,
		); err != nil {
			return err
		}
	}

	for _, microphone := range hardwareDevice.Microphones {
		if err := upsertMilestoneHardwareChildDevice(
			ctx,
			tx,
			hardwareID,
			"microphone",
			microphone,
		); err != nil {
			return err
		}
	}

	return nil
}

func upsertMilestoneHardwareChildDevice(
	ctx context.Context,
	tx pgx.Tx,
	hardwareID string,
	deviceType string,
	childDevice milestoneNamedDevice,
) error {
	milestoneDeviceID := strings.TrimSpace(childDevice.ID)
	if milestoneDeviceID == "" {
		return nil
	}

	name := strings.TrimSpace(childDevice.Name)
	displayName := strings.TrimSpace(childDevice.DisplayName)
	shortName := strings.TrimSpace(childDevice.ShortName)

	if name == "" {
		name = displayName
	}
	if name == "" {
		name = shortName
	}
	if displayName == "" {
		displayName = name
	}
	if shortName == "" {
		shortName = name
	}

	_, err := tx.Exec(
		ctx,
		`
		INSERT INTO milestone_hardware_child_devices (
			milestone_hardware_id,
			milestone_device_id,
			device_type,
			name,
			display_name,
			short_name,
			enabled,
			recording_enabled,
			recording_storage_id
		)
		VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)
		ON CONFLICT (milestone_hardware_id, milestone_device_id, device_type)
		DO UPDATE SET
			name = EXCLUDED.name,
			display_name = EXCLUDED.display_name,
			short_name = EXCLUDED.short_name,
			enabled = EXCLUDED.enabled,
			recording_enabled = EXCLUDED.recording_enabled,
			recording_storage_id = EXCLUDED.recording_storage_id,
			updated_at = now()
		`,
		hardwareID,
		milestoneDeviceID,
		deviceType,
		name,
		displayName,
		shortName,
		childDevice.Enabled,
		childDevice.RecordingEnabled,
		strings.TrimSpace(childDevice.RecordingStorageID),
	)

	return err
}

func createOrUpdateMilestoneHardwareDevice(
	ctx context.Context,
	tx pgx.Tx,
	hardwareDevice milestoneHardwareDevice,
) (bool, error) {
	inventoryNumber, err := buildMilestoneInventoryNumber(ctx, tx, hardwareDevice)
	if err != nil {
		return false, err
	}

	commandTag, err := tx.Exec(
		ctx,
		`
		INSERT INTO devices (
			inventory_number,
			manufacturer,
			model,
			serial_number,
			mac_address,
			ip_address,
			milestone_port,
			location,
			loan_status,
			is_bao_device,
			comment,
			firmware_version,
			milestone_recording_server_id,
			milestone_hardware_id,
			milestone_display_name,
			milestone_enabled,
			milestone_synced_at
		)
		VALUES (
			$1,
			$2,
			$3,
			$4,
			$5,
			$6,
			$7,
			'',
			'Verfügbar',
			false,
			'',
			$8,
			$9,
			$10,
			$11,
			$12,
			now()
		)
		ON CONFLICT (milestone_hardware_id)
		WHERE milestone_hardware_id <> ''
		DO UPDATE SET
			inventory_number = EXCLUDED.inventory_number,
			manufacturer = EXCLUDED.manufacturer,
			model = EXCLUDED.model,
			serial_number = EXCLUDED.serial_number,
			mac_address = EXCLUDED.mac_address,
			ip_address = EXCLUDED.ip_address,
			milestone_port = EXCLUDED.milestone_port,
			firmware_version = EXCLUDED.firmware_version,
			milestone_recording_server_id = EXCLUDED.milestone_recording_server_id,
			milestone_display_name = EXCLUDED.milestone_display_name,
			milestone_enabled = EXCLUDED.milestone_enabled,
			milestone_synced_at = now(),
			updated_at = now()
		`,
		inventoryNumber,
		hardwareDevice.Manufacturer,
		hardwareDevice.DeviceModelName,
		hardwareDevice.SerialNumber,
		hardwareDevice.MacAddress,
		hardwareDevice.IPAddress,
		hardwareDevice.Port,
		hardwareDevice.FirmwareVersion,
		hardwareDevice.RecordingServerID,
		hardwareDevice.HardwareID,
		hardwareDevice.DisplayName,
		hardwareDevice.Enabled,
	)
	if err != nil {
		return false, err
	}

	return commandTag.RowsAffected() > 0, nil
}