package service

import (
	"context"
	"database/sql"
	"encoding/json"
	"errors"
	"fmt"
	"net/http"
	"net/url"

	"github.com/fleetdm/fleet/v4/ee/server/service/hostidentity/httpsig"
	"github.com/fleetdm/fleet/v4/server"
	"github.com/fleetdm/fleet/v4/server/contexts/capabilities"
	"github.com/fleetdm/fleet/v4/server/contexts/ctxerr"
	hostctx "github.com/fleetdm/fleet/v4/server/contexts/host"
	"github.com/fleetdm/fleet/v4/server/contexts/license"
	"github.com/fleetdm/fleet/v4/server/contexts/logging"
	"github.com/fleetdm/fleet/v4/server/fleet"
	"github.com/fleetdm/fleet/v4/server/mdm"
	microsoft_mdm "github.com/fleetdm/fleet/v4/server/mdm/microsoft"
	"github.com/fleetdm/fleet/v4/server/ptr"
	"github.com/fleetdm/fleet/v4/server/service/contract"
	"github.com/fleetdm/fleet/v4/server/service/middleware/endpoint_utils"
	"github.com/fleetdm/fleet/v4/server/worker"
	"github.com/go-kit/log/level"
)

type setOrbitNodeKeyer interface {
	setOrbitNodeKey(nodeKey string)
}

type EnrollOrbitResponse struct {
	OrbitNodeKey string `json:"orbit_node_key,omitempty"`
	Err          error  `json:"error,omitempty"`
}

type orbitGetConfigRequest struct {
	OrbitNodeKey string `json:"orbit_node_key"`
}

func (r *orbitGetConfigRequest) setOrbitNodeKey(nodeKey string) {
	r.OrbitNodeKey = nodeKey
}

func (r *orbitGetConfigRequest) orbitHostNodeKey() string {
	return r.OrbitNodeKey
}

type orbitGetConfigResponse struct {
	fleet.OrbitConfig
	Err error `json:"error,omitempty"`
}

func (r orbitGetConfigResponse) Error() error { return r.Err }

func (r EnrollOrbitResponse) Error() error { return r.Err }

// HijackRender so we can add a header with the server capabilities in the
// response, allowing Orbit to know what features are available without the
// need to enroll.
func (r EnrollOrbitResponse) HijackRender(ctx context.Context, w http.ResponseWriter) {
	writeCapabilitiesHeader(w, fleet.GetServerOrbitCapabilities())
	enc := json.NewEncoder(w)
	enc.SetIndent("", "  ")

	if err := enc.Encode(r); err != nil {
		endpoint_utils.EncodeError(ctx, newOsqueryError(fmt.Sprintf("orbit enroll failed: %s", err)), w)
	}
}

func enrollOrbitEndpoint(ctx context.Context, request interface{}, svc fleet.Service) (fleet.Errorer, error) {
	req := request.(*contract.EnrollOrbitRequest)
	nodeKey, err := svc.EnrollOrbit(ctx, fleet.OrbitHostInfo{
		HardwareUUID:      req.HardwareUUID,
		HardwareSerial:    req.HardwareSerial,
		Hostname:          req.Hostname,
		Platform:          req.Platform,
		PlatformLike:      req.PlatformLike,
		OsqueryIdentifier: req.OsqueryIdentifier,
		ComputerName:      req.ComputerName,
		HardwareModel:     req.HardwareModel,
	}, req.EnrollSecret)
	if err != nil {
		return EnrollOrbitResponse{Err: err}, nil
	}
	return EnrollOrbitResponse{OrbitNodeKey: nodeKey}, nil
}

func (svc *Service) AuthenticateOrbitHost(ctx context.Context, orbitNodeKey string) (*fleet.Host, bool, error) {
	svc.authz.SkipAuthorization(ctx)

	if orbitNodeKey == "" {
		return nil, false, ctxerr.Wrap(ctx, fleet.NewAuthRequiredError("authentication error: missing orbit node key"))
	}

	host, err := svc.ds.LoadHostByOrbitNodeKey(ctx, orbitNodeKey)
	switch {
	case err == nil:
		// OK
	case fleet.IsNotFound(err):
		return nil, false, ctxerr.Wrap(ctx, fleet.NewAuthRequiredError("authentication error: invalid orbit node key"))
	default:
		return nil, false, ctxerr.Wrap(ctx, err, "authentication error orbit")
	}

	if *host.HasHostIdentityCert {
		err = httpsig.VerifyHostIdentity(ctx, svc.ds, host)
		if err != nil {
			return nil, false, ctxerr.Wrap(ctx, fleet.NewAuthRequiredError(fmt.Sprintf("authentication error orbit: %s", err.Error())))
		}
	}

	return host, svc.debugEnabledForHost(ctx, host.ID), nil
}

// EnrollOrbit enrolls an Orbit instance to Fleet and returns the orbit node key.
func (svc *Service) EnrollOrbit(ctx context.Context, hostInfo fleet.OrbitHostInfo, enrollSecret string) (string, error) {
	// this is not a user-authenticated endpoint
	svc.authz.SkipAuthorization(ctx)

	logging.WithLevel(
		logging.WithExtras(ctx,
			"hardware_uuid", hostInfo.HardwareUUID,
			"hardware_serial", hostInfo.HardwareSerial,
			"hostname", hostInfo.Hostname,
			"platform", hostInfo.Platform,
			"platform_like", hostInfo.PlatformLike,
			"osquery_identifier", hostInfo.OsqueryIdentifier,
			"computer_name", hostInfo.ComputerName,
			"hardware_model", hostInfo.HardwareModel,
		),
		level.Info,
	)

	secret, err := svc.ds.VerifyEnrollSecret(ctx, enrollSecret)
	if err != nil {
		if fleet.IsNotFound(err) {
			// OK - This can happen if the following sequence of events take place:
			// 	1. User deletes global/team enroll secret.
			// 	2. User deletes the host in Fleet.
			// 	3. Orbit tries to re-enroll using old secret.
			return "", fleet.NewAuthFailedError("invalid secret")
		}
		return "", fleet.OrbitError{Message: err.Error()}
	}

	identifier := hostInfo.OsqueryIdentifier
	if identifier == "" {
		identifier = hostInfo.HardwareUUID
	}

	identityCert, err := svc.ds.GetHostIdentityCertByName(ctx, identifier)
	if err != nil && !fleet.IsNotFound(err) {
		return "", fleet.OrbitError{Message: fmt.Sprintf("loading certificate: %s", err.Error())}
	}

	// If an identity certificate exists for this host, make sure the request had an HTTP message signature with the matching certificate.
	hostIdentityCert, httpSigPresent := httpsig.FromContext(ctx)
	if identityCert != nil {
		if !httpSigPresent {
			return "", fleet.NewAuthFailedError("authentication error: missing HTTP signature")
		}
		if identityCert.SerialNumber != hostIdentityCert.SerialNumber {
			return "", fleet.NewAuthFailedError("authentication error: certificate serial number mismatch")
		}
	} else if httpSigPresent { // but we couldn't find the cert in DB
		return "", fleet.NewAuthFailedError("authentication error: certificate matching HTTP message signature not found")
	}

	orbitNodeKey, err := server.GenerateRandomText(svc.config.Osquery.NodeKeySize)
	if err != nil {
		return "", fleet.OrbitError{Message: "failed to generate orbit node key: " + err.Error()}
	}

	appConfig, err := svc.ds.AppConfig(ctx)
	if err != nil {
		return "", fleet.OrbitError{Message: "app config load failed: " + err.Error()}
	}

	host, err := svc.ds.EnrollOrbit(ctx,
		fleet.WithEnrollOrbitMDMEnabled(appConfig.MDM.EnabledAndConfigured),
		fleet.WithEnrollOrbitHostInfo(hostInfo),
		fleet.WithEnrollOrbitNodeKey(orbitNodeKey),
		fleet.WithEnrollOrbitTeamID(secret.TeamID),
		fleet.WithEnrollOrbitIdentityCert(identityCert),
	)
	if err != nil {
		return "", fleet.OrbitError{Message: "failed to enroll " + err.Error()}
	}

	if err := svc.NewActivity(
		ctx,
		nil,
		fleet.ActivityTypeFleetEnrolled{
			HostID:          host.ID,
			HostSerial:      hostInfo.HardwareSerial,
			HostDisplayName: host.DisplayName(),
		},
	); err != nil {
		level.Error(svc.logger).Log("msg", "record fleet enroll activity", "err", err)
	}

	return orbitNodeKey, nil
}

func getOrbitConfigEndpoint(ctx context.Context, request interface{}, svc fleet.Service) (fleet.Errorer, error) {
	cfg, err := svc.GetOrbitConfig(ctx)
	if err != nil {
		return orbitGetConfigResponse{Err: err}, nil
	}
	return orbitGetConfigResponse{OrbitConfig: cfg}, nil
}

func (svc *Service) GetOrbitConfig(ctx context.Context) (fleet.OrbitConfig, error) {
	// this is not a user-authenticated endpoint
	svc.authz.SkipAuthorization(ctx)

	host, ok := hostctx.FromContext(ctx)
	if !ok {
		return fleet.OrbitConfig{}, fleet.OrbitError{Message: "internal error: missing host from request context"}
	}

	appConfig, err := svc.ds.AppConfig(ctx)
	if err != nil {
		return fleet.OrbitConfig{}, err
	}

	isConnectedToFleetMDM, err := svc.ds.IsHostConnectedToFleetMDM(ctx, host)
	if err != nil {
		return fleet.OrbitConfig{}, ctxerr.Wrap(ctx, err, "checking if host is connected to Fleet")
	}

	mdmInfo, err := svc.ds.GetHostMDM(ctx, host.ID)
	if err != nil && !errors.Is(err, sql.ErrNoRows) {
		return fleet.OrbitConfig{}, ctxerr.Wrap(ctx, err, "retrieving host mdm info")
	}

	// set the host's orbit notifications for macOS MDM
	var notifs fleet.OrbitConfigNotifications
	if appConfig.MDM.EnabledAndConfigured && host.IsOsqueryEnrolled() && host.Platform == "darwin" {
		needsDEPEnrollment := mdmInfo != nil && !mdmInfo.Enrolled && host.IsDEPAssignedToFleet()

		if needsDEPEnrollment {
			notifs.RenewEnrollmentProfile = true
		}

		manualMigrationEligible, err := fleet.IsEligibleForManualMigration(host, mdmInfo, isConnectedToFleetMDM)
		if err != nil {
			return fleet.OrbitConfig{}, ctxerr.Wrap(ctx, err, "checking manual migration eligibility")
		}

		if appConfig.MDM.MacOSMigration.Enable &&
			(fleet.IsEligibleForDEPMigration(host, mdmInfo, isConnectedToFleetMDM) || manualMigrationEligible) {
			notifs.NeedsMDMMigration = true
		}

		if isConnectedToFleetMDM {
			// If there is no software or script configured for setup experience and this is the
			// first time orbit is calling the /config endpoint, then this host
			// will not have a row in host_mdm_apple_awaiting_configuration.
			// On subsequent calls to /config, the host WILL have a row in
			// host_mdm_apple_awaiting_configuration.
			inSetupAssistant, err := svc.ds.GetHostAwaitingConfiguration(ctx, host.UUID)
			if err != nil && !fleet.IsNotFound(err) {
				return fleet.OrbitConfig{}, ctxerr.Wrap(ctx, err, "checking if host is in setup experience")
			}

			if inSetupAssistant {
				notifs.RunSetupExperience = true
			}

			if inSetupAssistant {
				// If the client is running a fleetd that doesn't support setup
				// experience, then we should fall back to the "old way" of releasing
				// the device.
				mp, ok := capabilities.FromContext(ctx)
				if !ok || !mp.Has(fleet.CapabilitySetupExperience) {
					level.Debug(svc.logger).Log("msg", "host doesn't support setup experience, falling back to worker-based device release", "host_uuid", host.UUID)
					if err := svc.processReleaseDeviceForOldFleetd(ctx, host); err != nil {
						return fleet.OrbitConfig{}, err
					}
				}
			}
		}
	}

	// set the host's orbit notifications for Windows MDM
	if appConfig.MDM.WindowsEnabledAndConfigured {
		if isEligibleForWindowsMDMEnrollment(host, mdmInfo) {
			discoURL, err := microsoft_mdm.ResolveWindowsMDMDiscovery(appConfig.ServerSettings.ServerURL)
			if err != nil {
				return fleet.OrbitConfig{}, err
			}
			notifs.WindowsMDMDiscoveryEndpoint = discoURL
			notifs.NeedsProgrammaticWindowsMDMEnrollment = true
		} else if appConfig.MDM.WindowsMigrationEnabled && isEligibleForWindowsMDMMigration(host, mdmInfo) {
			notifs.NeedsMDMMigration = true

			// Set the host to refetch the "critical queries" quickly for some time,
			// to improve ingestion time of the unenroll and make the host eligible to
			// enroll into Fleet faster.
			if host.RefetchCriticalQueriesUntil == nil {
				refetchUntil := svc.clock.Now().Add(fleet.RefetchMDMUnenrollCriticalQueryDuration)
				host.RefetchCriticalQueriesUntil = &refetchUntil
				if err := svc.ds.UpdateHostRefetchCriticalQueriesUntil(ctx, host.ID, &refetchUntil); err != nil {
					return fleet.OrbitConfig{}, err
				}
			}
		}
	}
	if !appConfig.MDM.WindowsEnabledAndConfigured {
		if host.IsEligibleForWindowsMDMUnenrollment(isConnectedToFleetMDM) {
			notifs.NeedsProgrammaticWindowsMDMUnenrollment = true
		}
	}

	// load the (active, ready to execute) pending script executions for that host
	pending, err := svc.ds.ListReadyToExecuteScriptsForHost(ctx, host.ID, appConfig.ServerSettings.ScriptsDisabled)
	if err != nil {
		return fleet.OrbitConfig{}, err
	}
	if len(pending) > 0 {
		execIDs := make([]string, 0, len(pending))
		for _, p := range pending {
			execIDs = append(execIDs, p.ExecutionID)
		}
		notifs.PendingScriptExecutionIDs = execIDs
	}

	notifs.RunDiskEncryptionEscrow = host.IsLUKSSupported() &&
		host.DiskEncryptionEnabled != nil &&
		*host.DiskEncryptionEnabled &&
		svc.ds.IsHostPendingEscrow(ctx, host.ID)

	// load the (active, ready to execute) pending software install executions for that host
	pendingInstalls, err := svc.ds.ListReadyToExecuteSoftwareInstalls(ctx, host.ID)
	if err != nil {
		return fleet.OrbitConfig{}, err
	}
	if len(pendingInstalls) > 0 {
		notifs.PendingSoftwareInstallerIDs = pendingInstalls
	}

	// team ID is not nil, get team specific flags and options
	if host.TeamID != nil {
		teamAgentOptions, err := svc.ds.TeamAgentOptions(ctx, *host.TeamID)
		if err != nil {
			return fleet.OrbitConfig{}, err
		}

		var opts fleet.AgentOptions
		if teamAgentOptions != nil && len(*teamAgentOptions) > 0 {
			if err := json.Unmarshal(*teamAgentOptions, &opts); err != nil {
				return fleet.OrbitConfig{}, err
			}
		}

		extensionsFiltered, err := svc.filterExtensionsForHost(ctx, opts.Extensions, host)
		if err != nil {
			return fleet.OrbitConfig{}, err
		}

		mdmConfig, err := svc.ds.TeamMDMConfig(ctx, *host.TeamID)
		if err != nil {
			return fleet.OrbitConfig{}, err
		}

		var nudgeConfig *fleet.NudgeConfig
		if appConfig.MDM.EnabledAndConfigured &&
			mdmConfig != nil &&
			host.IsOsqueryEnrolled() &&
			isConnectedToFleetMDM &&
			mdmConfig.MacOSUpdates.Configured() {

			hostOS, err := svc.ds.GetHostOperatingSystem(ctx, host.ID)
			if errors.Is(err, sql.ErrNoRows) {
				// host os has not been collected yet (no details query)
				hostOS = &fleet.OperatingSystem{}
			} else if err != nil {
				return fleet.OrbitConfig{}, err
			}
			requiresNudge, err := hostOS.RequiresNudge()
			if err != nil {
				return fleet.OrbitConfig{}, err
			}

			if requiresNudge {
				nudgeConfig, err = fleet.NewNudgeConfig(mdmConfig.MacOSUpdates)
				if err != nil {
					return fleet.OrbitConfig{}, err
				}
			}
		}

		err = svc.setDiskEncryptionNotifications(
			ctx,
			&notifs,
			host,
			appConfig,
			mdmConfig.EnableDiskEncryption,
			isConnectedToFleetMDM,
			mdmInfo,
		)
		if err != nil {
			return fleet.OrbitConfig{}, ctxerr.Wrap(ctx, err, "setting team disk encryption notifications")
		}

		var updateChannels *fleet.OrbitUpdateChannels
		if len(opts.UpdateChannels) > 0 {
			var uc fleet.OrbitUpdateChannels
			if err := json.Unmarshal(opts.UpdateChannels, &uc); err != nil {
				return fleet.OrbitConfig{}, err
			}
			updateChannels = &uc
		}

		// only unset this flag once we know there were no errors so this notification will be picked up by the agent
		if notifs.RunDiskEncryptionEscrow {
			_ = svc.ds.ClearPendingEscrow(ctx, host.ID)
		}

		return fleet.OrbitConfig{
			ScriptExeTimeout: opts.ScriptExecutionTimeout,
			Flags:            opts.CommandLineStartUpFlags,
			Extensions:       extensionsFiltered,
			Notifications:    notifs,
			NudgeConfig:      nudgeConfig,
			UpdateChannels:   updateChannels,
		}, nil
	}

	// team ID is nil, get global flags and options
	var opts fleet.AgentOptions
	if appConfig.AgentOptions != nil {
		if err := json.Unmarshal(*appConfig.AgentOptions, &opts); err != nil {
			return fleet.OrbitConfig{}, err
		}
	}

	extensionsFiltered, err := svc.filterExtensionsForHost(ctx, opts.Extensions, host)
	if err != nil {
		return fleet.OrbitConfig{}, err
	}

	var nudgeConfig *fleet.NudgeConfig
	if appConfig.MDM.EnabledAndConfigured &&
		isConnectedToFleetMDM &&
		host.IsOsqueryEnrolled() &&
		appConfig.MDM.MacOSUpdates.Configured() {
		hostOS, err := svc.ds.GetHostOperatingSystem(ctx, host.ID)
		if errors.Is(err, sql.ErrNoRows) {
			// host os has not been collected yet (no details query)
			hostOS = &fleet.OperatingSystem{}
		} else if err != nil {
			return fleet.OrbitConfig{}, err
		}
		requiresNudge, err := hostOS.RequiresNudge()
		if err != nil {
			return fleet.OrbitConfig{}, err
		}

		if requiresNudge {
			nudgeConfig, err = fleet.NewNudgeConfig(appConfig.MDM.MacOSUpdates)
			if err != nil {
				return fleet.OrbitConfig{}, err
			}
		}
	}

	err = svc.setDiskEncryptionNotifications(
		ctx,
		&notifs,
		host,
		appConfig,
		appConfig.MDM.EnableDiskEncryption.Value,
		isConnectedToFleetMDM,
		mdmInfo,
	)
	if err != nil {
		return fleet.OrbitConfig{}, ctxerr.Wrap(ctx, err, "setting no-team disk encryption notifications")
	}

	var updateChannels *fleet.OrbitUpdateChannels
	if len(opts.UpdateChannels) > 0 {
		var uc fleet.OrbitUpdateChannels
		if err := json.Unmarshal(opts.UpdateChannels, &uc); err != nil {
			return fleet.OrbitConfig{}, err
		}
		updateChannels = &uc
	}

	// only unset this flag once we know there were no errors so this notification will be picked up by the agent
	if notifs.RunDiskEncryptionEscrow {
		_ = svc.ds.ClearPendingEscrow(ctx, host.ID)
	}

	return fleet.OrbitConfig{
		ScriptExeTimeout: opts.ScriptExecutionTimeout,
		Flags:            opts.CommandLineStartUpFlags,
		Extensions:       extensionsFiltered,
		Notifications:    notifs,
		NudgeConfig:      nudgeConfig,
		UpdateChannels:   updateChannels,
	}, nil
}

func (svc *Service) processReleaseDeviceForOldFleetd(ctx context.Context, host *fleet.Host) error {
	var manualRelease bool
	if host.TeamID == nil {
		ac, err := svc.ds.AppConfig(ctx)
		if err != nil {
			return ctxerr.Wrap(ctx, err, "get AppConfig to read enable_release_device_manually")
		}
		manualRelease = ac.MDM.MacOSSetup.EnableReleaseDeviceManually.Value
	} else {
		tm, err := svc.ds.Team(ctx, *host.TeamID)
		if err != nil {
			return ctxerr.Wrap(ctx, err, "get Team to read enable_release_device_manually")
		}
		manualRelease = tm.Config.MDM.MacOSSetup.EnableReleaseDeviceManually.Value
	}

	if !manualRelease {
		// For the commands to await, since we're in an orbit endpoint we know that
		// fleetd has already been installed, so we only need to check for the
		// bootstrap package install and the SSO account configuration (both are
		// optional).
		bootstrapCmdUUID, err := svc.ds.GetHostBootstrapPackageCommand(ctx, host.UUID)
		if err != nil && !fleet.IsNotFound(err) {
			return ctxerr.Wrap(ctx, err, "get bootstrap package command")
		}

		// AccountConfiguration covers the (optional) command to setup SSO.
		adminTeamFilter := fleet.TeamFilter{
			User: &fleet.User{GlobalRole: ptr.String(fleet.RoleAdmin)},
		}
		acctCmds, err := svc.ds.ListMDMCommands(ctx, adminTeamFilter, &fleet.MDMCommandListOptions{
			Filters: fleet.MDMCommandFilters{
				HostIdentifier: host.UUID,
				RequestType:    "AccountConfiguration",
			},
		})
		if err != nil {
			return ctxerr.Wrap(ctx, err, "list AccountConfiguration commands")
		}
		var acctConfigCmdUUID string
		if len(acctCmds) > 0 {
			// there may be more than one if e.g. the worker job that sends them had to
			// retry, but they would all be processed anyway so we can only care about
			// the first one.
			acctConfigCmdUUID = acctCmds[0].CommandUUID
		}

		// Enroll reference arg is not used in the release device task, passing empty string.
		if err := worker.QueueAppleMDMJob(ctx, svc.ds, svc.logger, worker.AppleMDMPostDEPReleaseDeviceTask,
			host.UUID, host.Platform, host.TeamID, "", false, bootstrapCmdUUID, acctConfigCmdUUID); err != nil {
			return ctxerr.Wrap(ctx, err, "queue Apple Post-DEP release device job")
		}
	}

	// at this point we know for sure that it will get released, but we need to
	// ensure we won't continually enqueue new worker jobs for that host until it
	// is released. To do so, we clear up the setup experience data (since anyway
	// this host will not go through that new flow).
	if err := svc.ds.SetHostAwaitingConfiguration(ctx, host.UUID, false); err != nil {
		return ctxerr.Wrap(ctx, err, "unset host awaiting configuration")
	}

	return nil
}

func (svc *Service) setDiskEncryptionNotifications(
	ctx context.Context,
	notifs *fleet.OrbitConfigNotifications,
	host *fleet.Host,
	appConfig *fleet.AppConfig,
	diskEncryptionConfigured bool,
	isConnectedToFleetMDM bool,
	mdmInfo *fleet.HostMDM,
) error {
	anyMDMConfigured := appConfig.MDM.EnabledAndConfigured || appConfig.MDM.WindowsEnabledAndConfigured
	if !anyMDMConfigured ||
		!isConnectedToFleetMDM ||
		!host.IsOsqueryEnrolled() ||
		!diskEncryptionConfigured {
		return nil
	}

	encryptionKey, err := svc.ds.GetHostDiskEncryptionKey(ctx, host.ID)
	if err != nil {
		if !fleet.IsNotFound(err) {
			return ctxerr.Wrap(ctx, err, "fetching host disk encryption key")
		}
	}

	switch host.FleetPlatform() {
	case "darwin":
		mp, ok := capabilities.FromContext(ctx)
		if !ok {
			level.Debug(svc.logger).Log("msg", "no capabilities in context, skipping disk encryption notification")
			return nil
		}

		if !mp.Has(fleet.CapabilityEscrowBuddy) {
			level.Debug(svc.logger).Log("msg", "host doesn't support Escrow Buddy, skipping disk encryption notification", "host_uuid", host.UUID)
			return nil
		}

		notifs.RotateDiskEncryptionKey = encryptionKey != nil && encryptionKey.Decryptable != nil && !*encryptionKey.Decryptable
	case "windows":
		isServer := mdmInfo != nil && mdmInfo.IsServer
		needsEncryption := host.DiskEncryptionEnabled != nil && !*host.DiskEncryptionEnabled
		keyWasDecrypted := encryptionKey != nil && encryptionKey.Decryptable != nil && *encryptionKey.Decryptable
		encryptedWithoutKey := host.DiskEncryptionEnabled != nil && *host.DiskEncryptionEnabled && !keyWasDecrypted
		notifs.EnforceBitLockerEncryption = !isServer &&
			mdmInfo != nil &&
			(needsEncryption || encryptedWithoutKey)
	}

	return nil
}

// filterExtensionsForHost filters a extensions configuration depending on the host platform and label membership.
//
// If all extensions are filtered, then it returns (nil, nil) (Orbit expects empty extensions if there
// are no extensions for the host.)
func (svc *Service) filterExtensionsForHost(ctx context.Context, extensions json.RawMessage, host *fleet.Host) (json.RawMessage, error) {
	if len(extensions) == 0 {
		return nil, nil
	}
	var extensionsInfo fleet.Extensions
	if err := json.Unmarshal(extensions, &extensionsInfo); err != nil {
		return nil, ctxerr.Wrap(ctx, err, "unmarshal extensions config")
	}

	// Filter the extensions by platform.
	extensionsInfo.FilterByHostPlatform(host.Platform, host.CPUType)

	// Filter the extensions by labels (premium only feature).
	if license, _ := license.FromContext(ctx); license != nil && license.IsPremium() {
		for extensionName, extensionInfo := range extensionsInfo {
			hostIsMemberOfAllLabels, err := svc.ds.HostMemberOfAllLabels(ctx, host.ID, extensionInfo.Labels)
			if err != nil {
				return nil, ctxerr.Wrap(ctx, err, "check host labels")
			}
			if hostIsMemberOfAllLabels {
				// Do not filter out, but there's no need to send the label names to the devices.
				extensionInfo.Labels = nil
				extensionsInfo[extensionName] = extensionInfo
			} else {
				delete(extensionsInfo, extensionName)
			}
		}
	}
	// Orbit expects empty message if no extensions apply.
	if len(extensionsInfo) == 0 {
		return nil, nil
	}
	extensionsFiltered, err := json.Marshal(extensionsInfo)
	if err != nil {
		return nil, ctxerr.Wrap(ctx, err, "marshal extensions config")
	}
	return extensionsFiltered, nil
}

/////////////////////////////////////////////////////////////////////////////////
// Ping orbit endpoint
/////////////////////////////////////////////////////////////////////////////////

type orbitPingRequest struct{}

type orbitPingResponse struct{}

func (r orbitPingResponse) HijackRender(ctx context.Context, w http.ResponseWriter) {
	writeCapabilitiesHeader(w, fleet.GetServerOrbitCapabilities())
}

func (r orbitPingResponse) Error() error { return nil }

// NOTE: we're intentionally not reading the capabilities header in this
// endpoint as is unauthenticated and we don't want to trust whatever comes in
// there.
func orbitPingEndpoint(ctx context.Context, request interface{}, svc fleet.Service) (fleet.Errorer, error) {
	svc.DisableAuthForPing(ctx)
	return orbitPingResponse{}, nil
}

/////////////////////////////////////////////////////////////////////////////////
// SetOrUpdateDeviceToken endpoint
/////////////////////////////////////////////////////////////////////////////////

type setOrUpdateDeviceTokenRequest struct {
	OrbitNodeKey    string `json:"orbit_node_key"`
	DeviceAuthToken string `json:"device_auth_token"`
}

func (r *setOrUpdateDeviceTokenRequest) setOrbitNodeKey(nodeKey string) {
	r.OrbitNodeKey = nodeKey
}

func (r *setOrUpdateDeviceTokenRequest) orbitHostNodeKey() string {
	return r.OrbitNodeKey
}

type setOrUpdateDeviceTokenResponse struct {
	Err error `json:"error,omitempty"`
}

func (r setOrUpdateDeviceTokenResponse) Error() error { return r.Err }

func setOrUpdateDeviceTokenEndpoint(ctx context.Context, request interface{}, svc fleet.Service) (fleet.Errorer, error) {
	req := request.(*setOrUpdateDeviceTokenRequest)
	if err := svc.SetOrUpdateDeviceAuthToken(ctx, req.DeviceAuthToken); err != nil {
		return setOrUpdateDeviceTokenResponse{Err: err}, nil
	}
	return setOrUpdateDeviceTokenResponse{}, nil
}

func (svc *Service) SetOrUpdateDeviceAuthToken(ctx context.Context, deviceAuthToken string) error {
	// this is not a user-authenticated endpoint
	svc.authz.SkipAuthorization(ctx)

	if len(deviceAuthToken) == 0 {
		return badRequest("device auth token cannot be empty")
	}

	if url.QueryEscape(deviceAuthToken) != deviceAuthToken {
		return badRequest("device auth token contains invalid characters")
	}

	host, ok := hostctx.FromContext(ctx)
	if !ok {
		return newOsqueryError("internal error: missing host from request context")
	}

	if err := svc.ds.SetOrUpdateDeviceAuthToken(ctx, host.ID, deviceAuthToken); err != nil {
		if errors.As(err, &fleet.ConflictError{}) {
			return err
		}
		return newOsqueryError(fmt.Sprintf("internal error: failed to set or update device auth token: %s", err))
	}

	return nil
}

/////////////////////////////////////////////////////////////////////////////////
// Get Orbit pending script execution request
/////////////////////////////////////////////////////////////////////////////////

type orbitGetScriptRequest struct {
	OrbitNodeKey string `json:"orbit_node_key"`
	ExecutionID  string `json:"execution_id"`
}

// interface implementation required by the OrbitClient
func (r *orbitGetScriptRequest) setOrbitNodeKey(nodeKey string) {
	r.OrbitNodeKey = nodeKey
}

// interface implementation required by orbit authentication
func (r *orbitGetScriptRequest) orbitHostNodeKey() string {
	return r.OrbitNodeKey
}

type orbitGetScriptResponse struct {
	Err error `json:"error,omitempty"`
	*fleet.HostScriptResult
}

func (r orbitGetScriptResponse) Error() error { return r.Err }

func getOrbitScriptEndpoint(ctx context.Context, request interface{}, svc fleet.Service) (fleet.Errorer, error) {
	req := request.(*orbitGetScriptRequest)
	script, err := svc.GetHostScript(ctx, req.ExecutionID)
	if err != nil {
		return orbitGetScriptResponse{Err: err}, nil
	}
	return orbitGetScriptResponse{HostScriptResult: script}, nil
}

func (svc *Service) GetHostScript(ctx context.Context, execID string) (*fleet.HostScriptResult, error) {
	// this is not a user-authenticated endpoint
	svc.authz.SkipAuthorization(ctx)

	host, ok := hostctx.FromContext(ctx)
	if !ok {
		return nil, fleet.OrbitError{Message: "internal error: missing host from request context"}
	}

	// get the script's details
	script, err := svc.ds.GetHostScriptExecutionResult(ctx, execID)
	if err != nil {
		return nil, err
	}
	// ensure it cannot get access to a different host's script
	if script.HostID != host.ID {
		return nil, ctxerr.Wrap(ctx, newNotFoundError(), "no script found for this host")
	}

	// We expose secret variables in the script content to the host. The exposed secrets are only intended to go to the device and not accessible via the UI/API.
	script.ScriptContents, err = svc.ds.ExpandEmbeddedSecrets(ctx, script.ScriptContents)
	if err != nil {
		// This error should never occur because we validate secret variables on script upload.
		return nil, ctxerr.Wrap(ctx, err, fmt.Sprintf("expand embedded secrets for host %d and script %s", host.ID, execID))
	}

	return script, nil
}

/////////////////////////////////////////////////////////////////////////////////
// Post Orbit script execution result
/////////////////////////////////////////////////////////////////////////////////

type orbitPostScriptResultRequest struct {
	OrbitNodeKey string `json:"orbit_node_key"`
	*fleet.HostScriptResultPayload
}

// interface implementation required by the OrbitClient
func (r *orbitPostScriptResultRequest) setOrbitNodeKey(nodeKey string) {
	r.OrbitNodeKey = nodeKey
}

// interface implementation required by orbit authentication
func (r *orbitPostScriptResultRequest) orbitHostNodeKey() string {
	return r.OrbitNodeKey
}

type orbitPostScriptResultResponse struct {
	Err error `json:"error,omitempty"`
}

func (r orbitPostScriptResultResponse) Error() error { return r.Err }

func postOrbitScriptResultEndpoint(ctx context.Context, request interface{}, svc fleet.Service) (fleet.Errorer, error) {
	req := request.(*orbitPostScriptResultRequest)
	if err := svc.SaveHostScriptResult(ctx, req.HostScriptResultPayload); err != nil {
		return orbitPostScriptResultResponse{Err: err}, nil
	}
	return orbitPostScriptResultResponse{}, nil
}

func (svc *Service) SaveHostScriptResult(ctx context.Context, result *fleet.HostScriptResultPayload) error {
	// this is not a user-authenticated endpoint
	svc.authz.SkipAuthorization(ctx)

	host, ok := hostctx.FromContext(ctx)
	if !ok {
		return fleet.OrbitError{Message: "internal error: missing host from request context"}
	}
	if result == nil {
		return ctxerr.Wrap(ctx, &fleet.BadRequestError{Message: "missing script result"}, "save host script result")
	}

	// always use the authenticated host's ID as host_id
	result.HostID = host.ID
	hsr, action, err := svc.ds.SetHostScriptExecutionResult(ctx, result)
	if err != nil {
		return ctxerr.Wrap(ctx, err, "save host script result")
	}

	// FIXME: datastore implementation of action seems rather brittle, can it be refactored?
	var fromSetupExperience bool
	if action == "" && fleet.IsSetupExperienceSupported(host.Platform) {
		// this might be a setup experience script result
		if updated, err := maybeUpdateSetupExperienceStatus(ctx, svc.ds, fleet.SetupExperienceScriptResult{
			HostUUID:    host.UUID,
			ExecutionID: result.ExecutionID,
			ExitCode:    result.ExitCode,
		}, true); err != nil {
			return ctxerr.Wrap(ctx, err, "update setup experience status")
		} else if updated {
			level.Debug(svc.logger).Log("msg", "setup experience script result updated", "host_uuid", host.UUID, "execution_id", result.ExecutionID)
			fromSetupExperience = true
			_, err := svc.EnterpriseOverrides.SetupExperienceNextStep(ctx, host)
			if err != nil {
				return ctxerr.Wrap(ctx, err, "getting next step for host setup experience")
			}
		}
	}

	// don't create a "past" activity if the result was for a canceled activity
	if hsr != nil && !hsr.Canceled {
		var user *fleet.User
		if hsr.UserID != nil {
			user, err = svc.ds.UserByID(ctx, *hsr.UserID)
			if err != nil {
				return ctxerr.Wrap(ctx, err, "get host script execution user")
			}
		}
		var scriptName string

		switch {
		case hsr.ScriptID != nil:
			scr, err := svc.ds.Script(ctx, *hsr.ScriptID)
			if err != nil {
				return ctxerr.Wrap(ctx, err, "get saved script")
			}
			scriptName = scr.Name
		case hsr.SetupExperienceScriptID != nil:
			scr, err := svc.ds.GetSetupExperienceScriptByID(ctx, *hsr.SetupExperienceScriptID)
			if err != nil {
				return ctxerr.Wrap(ctx, err, "get setup experience script")
			}

			scriptName = scr.Name
		}

		switch action {
		case "uninstall":
			softwareTitleName, selfService, err := svc.ds.GetDetailsForUninstallFromExecutionID(ctx, hsr.ExecutionID)
			if err != nil {
				return ctxerr.Wrap(ctx, err, "get software title from execution ID")
			}
			activityStatus := "failed"
			if hsr.ExitCode != nil && *hsr.ExitCode == 0 {
				activityStatus = "uninstalled"
			}
			if err := svc.NewActivity(
				ctx,
				user,
				fleet.ActivityTypeUninstalledSoftware{
					HostID:          host.ID,
					HostDisplayName: host.DisplayName(),
					SoftwareTitle:   softwareTitleName,
					ExecutionID:     hsr.ExecutionID,
					Status:          activityStatus,
					SelfService:     selfService,
				},
			); err != nil {
				return ctxerr.Wrap(ctx, err, "create activity for script execution request")
			}

			// lastly, queue a vitals refetch so we get a proper view of inventory from osquery
			if activityStatus == "uninstalled" {
				if err := svc.ds.UpdateHostRefetchRequested(ctx, host.ID, true); err != nil {
					return ctxerr.Wrap(ctx, err, "queue host vitals refetch")
				}
			}
		default:
			// TODO(sarah): We may need to special case lock/unlock script results here?
			var policyName *string
			if hsr.PolicyID != nil {
				if policy, err := svc.ds.PolicyLite(ctx, *hsr.PolicyID); err == nil {
					policyName = &policy.Name // fall back to blank policy name if we can't retrieve the policy
				}
			}

			if err := svc.NewActivity(
				ctx,
				user,
				fleet.ActivityTypeRanScript{
					HostID:              host.ID,
					HostDisplayName:     host.DisplayName(),
					ScriptExecutionID:   hsr.ExecutionID,
					BatchExecutionID:    hsr.BatchExecutionID,
					ScriptName:          scriptName,
					Async:               !hsr.SyncRequest,
					PolicyID:            hsr.PolicyID,
					PolicyName:          policyName,
					FromSetupExperience: fromSetupExperience,
				},
			); err != nil {
				return ctxerr.Wrap(ctx, err, "create activity for script execution request")
			}
		}

	}
	return nil
}

/////////////////////////////////////////////////////////////////////////////////
// Post Orbit device mapping (custom email)
/////////////////////////////////////////////////////////////////////////////////

type orbitPutDeviceMappingRequest struct {
	OrbitNodeKey string `json:"orbit_node_key"`
	Email        string `json:"email"`
}

// interface implementation required by the OrbitClient
func (r *orbitPutDeviceMappingRequest) setOrbitNodeKey(nodeKey string) {
	r.OrbitNodeKey = nodeKey
}

// interface implementation required by orbit authentication
func (r *orbitPutDeviceMappingRequest) orbitHostNodeKey() string {
	return r.OrbitNodeKey
}

type orbitPutDeviceMappingResponse struct {
	Err error `json:"error,omitempty"`
}

func (r orbitPutDeviceMappingResponse) Error() error { return r.Err }

func putOrbitDeviceMappingEndpoint(ctx context.Context, request interface{}, svc fleet.Service) (fleet.Errorer, error) {
	req := request.(*orbitPutDeviceMappingRequest)

	host, ok := hostctx.FromContext(ctx)
	if !ok {
		err := newOsqueryError("internal error: missing host from request context")
		return orbitPutDeviceMappingResponse{Err: err}, nil
	}

	_, err := svc.SetCustomHostDeviceMapping(ctx, host.ID, req.Email)
	return orbitPutDeviceMappingResponse{Err: err}, nil
}

/////////////////////////////////////////////////////////////////////////////////
// Post Orbit disk encryption key
/////////////////////////////////////////////////////////////////////////////////

type orbitPostDiskEncryptionKeyRequest struct {
	OrbitNodeKey  string `json:"orbit_node_key"`
	EncryptionKey []byte `json:"encryption_key"`
	ClientError   string `json:"client_error"`
}

// interface implementation required by the OrbitClient
func (r *orbitPostDiskEncryptionKeyRequest) setOrbitNodeKey(nodeKey string) {
	r.OrbitNodeKey = nodeKey
}

// interface implementation required by orbit authentication
func (r *orbitPostDiskEncryptionKeyRequest) orbitHostNodeKey() string {
	return r.OrbitNodeKey
}

type orbitPostDiskEncryptionKeyResponse struct {
	Err error `json:"error,omitempty"`
}

func (r orbitPostDiskEncryptionKeyResponse) Error() error { return r.Err }
func (r orbitPostDiskEncryptionKeyResponse) Status() int  { return http.StatusNoContent }

func postOrbitDiskEncryptionKeyEndpoint(ctx context.Context, request interface{}, svc fleet.Service) (fleet.Errorer, error) {
	req := request.(*orbitPostDiskEncryptionKeyRequest)
	if err := svc.SetOrUpdateDiskEncryptionKey(ctx, string(req.EncryptionKey), req.ClientError); err != nil {
		return orbitPostDiskEncryptionKeyResponse{Err: err}, nil
	}
	return orbitPostDiskEncryptionKeyResponse{}, nil
}

func (svc *Service) SetOrUpdateDiskEncryptionKey(ctx context.Context, encryptionKey, clientError string) error {
	// this is not a user-authenticated endpoint
	svc.authz.SkipAuthorization(ctx)

	host, ok := hostctx.FromContext(ctx)
	if !ok {
		return newOsqueryError("internal error: missing host from request context")
	}

	connected, err := svc.ds.IsHostConnectedToFleetMDM(ctx, host)
	if err != nil {
		return ctxerr.Wrap(ctx, err, "checking if host is connected to Fleet")
	}

	if !connected {
		return badRequest("host is not enrolled with fleet")
	}

	var (
		encryptedEncryptionKey string
		decryptable            *bool
	)

	// only set the encryption key if there was no client error
	if clientError == "" && encryptionKey != "" {
		wstepCert, _, _, err := svc.config.MDM.MicrosoftWSTEP()
		if err != nil {
			// should never return an error because the WSTEP is first parsed and
			// cached at the start of the fleet serve process.
			return ctxerr.Wrap(ctx, err, "get WSTEP certificate")
		}
		enc, err := microsoft_mdm.Encrypt(encryptionKey, wstepCert.Leaf)
		if err != nil {
			return ctxerr.Wrap(ctx, err, "encrypt the key with WSTEP certificate")
		}
		encryptedEncryptionKey = enc
		decryptable = ptr.Bool(true)
	}

	keyArchived, err := svc.ds.SetOrUpdateHostDiskEncryptionKey(ctx, host, encryptedEncryptionKey, clientError, decryptable)
	if err != nil {
		return ctxerr.Wrap(ctx, err, "set or update disk encryption key")
	}

	// We only want to record the activity if the key was successfully archived.
	if !keyArchived {
		return nil
	}
	if err := svc.NewActivity(
		ctx,
		nil,
		fleet.ActivityTypeEscrowedDiskEncryptionKey{
			HostID:          host.ID,
			HostDisplayName: host.DisplayName(),
		},
	); err != nil {
		// OK: this is not critical to the operation of the endpoint
		level.Error(svc.logger).Log(
			"msg", "record fleet disk encryption key escrowed activity",
			"err", err,
		)
		ctxerr.Handle(ctx, err)
	}

	return nil
}

/////////////////////////////////////////////////////////////////////////////////
// Post Orbit LUKS (Linux disk encryption) data
/////////////////////////////////////////////////////////////////////////////////

type orbitPostLUKSRequest struct {
	OrbitNodeKey string `json:"orbit_node_key"`
	Passphrase   string `json:"passphrase"`
	Salt         string `json:"salt"`
	KeySlot      *uint  `json:"key_slot"`
	ClientError  string `json:"client_error"`
}

// interface implementation required by the OrbitClient
func (r *orbitPostLUKSRequest) setOrbitNodeKey(nodeKey string) {
	r.OrbitNodeKey = nodeKey
}

// interface implementation required by orbit authentication
func (r *orbitPostLUKSRequest) orbitHostNodeKey() string {
	return r.OrbitNodeKey
}

type orbitPostLUKSResponse struct {
	Err error `json:"error,omitempty"`
}

func (r orbitPostLUKSResponse) Error() error { return r.Err }
func (r orbitPostLUKSResponse) Status() int  { return http.StatusNoContent }

func postOrbitLUKSEndpoint(ctx context.Context, request interface{}, svc fleet.Service) (fleet.Errorer, error) {
	req := request.(*orbitPostLUKSRequest)
	if err := svc.EscrowLUKSData(ctx, req.Passphrase, req.Salt, req.KeySlot, req.ClientError); err != nil {
		return orbitPostLUKSResponse{Err: err}, nil
	}
	return orbitPostLUKSResponse{}, nil
}

func (svc *Service) EscrowLUKSData(ctx context.Context, passphrase string, salt string, keySlot *uint, clientError string) error {
	// this is not a user-authenticated endpoint
	svc.authz.SkipAuthorization(ctx)

	host, ok := hostctx.FromContext(ctx)
	if !ok {
		return newOsqueryError("internal error: missing host from request context")
	}

	if clientError != "" {
		return svc.ds.ReportEscrowError(ctx, host.ID, clientError)
	}

	encryptedPassphrase, encryptedSalt, validatedKeySlot, err := svc.validateAndEncrypt(ctx, passphrase, salt, keySlot)
	if err != nil {
		_ = svc.ds.ReportEscrowError(ctx, host.ID, err.Error())
		return err
	}

	keyArchived, err := svc.ds.SaveLUKSData(ctx, host, encryptedPassphrase, encryptedSalt, validatedKeySlot)
	if err != nil {
		return err
	}

	// When only want to record a new activity if the current key was archived ...
	if !keyArchived {
		return nil
	}
	if err := svc.NewActivity(
		ctx,
		nil,
		fleet.ActivityTypeEscrowedDiskEncryptionKey{
			HostID:          host.ID,
			HostDisplayName: host.DisplayName(),
		},
	); err != nil {
		// OK: this is not critical to the operation of the endpoint
		level.Error(svc.logger).Log(
			"msg", "record fleet disk encryption key escrowed activity",
			"err", err,
		)
		ctxerr.Handle(ctx, err)
	}

	return nil
}

func (svc *Service) validateAndEncrypt(ctx context.Context, passphrase string, salt string, keySlot *uint) (encryptedPassphrase string, encryptedSalt string, validatedKeySlot uint, err error) {
	if passphrase == "" || salt == "" || keySlot == nil {
		return "", "", 0, badRequest("passphrase, salt, and key_slot must be provided to escrow LUKS data")
	}
	if svc.config.Server.PrivateKey == "" {
		return "", "", 0, newOsqueryError("internal error: missing server private key")
	}

	encryptedPassphrase, err = mdm.EncryptAndEncode(passphrase, svc.config.Server.PrivateKey)
	if err != nil {
		return "", "", 0, ctxerr.Wrap(ctx, err, "internal error: could not encrypt LUKS data")
	}
	encryptedSalt, err = mdm.EncryptAndEncode(salt, svc.config.Server.PrivateKey)
	if err != nil {
		return "", "", 0, ctxerr.Wrap(ctx, err, "internal error: could not encrypt LUKS data")
	}

	return encryptedPassphrase, encryptedSalt, *keySlot, nil
}

/////////////////////////////////////////////////////////////////////////////////
// Get Orbit pending software installations
/////////////////////////////////////////////////////////////////////////////////

type orbitGetSoftwareInstallRequest struct {
	OrbitNodeKey string `json:"orbit_node_key"`
	OrbotNodeKey string `json:"orbot_node_key"` // legacy typo -- keep for backwards compatibility with orbit <= 1.38.0
	InstallUUID  string `json:"install_uuid"`
}

// interface implementation required by the OrbitClient
func (r *orbitGetSoftwareInstallRequest) setOrbitNodeKey(nodeKey string) {
	r.OrbitNodeKey = nodeKey
	r.OrbotNodeKey = nodeKey // legacy typo -- keep for backwards compatability with fleet server < 4.63.0
}

// interface implementation required by the OrbitClient
func (r *orbitGetSoftwareInstallRequest) orbitHostNodeKey() string {
	if r.OrbitNodeKey != "" {
		return r.OrbitNodeKey
	}
	return r.OrbotNodeKey
}

type orbitGetSoftwareInstallResponse struct {
	Err error `json:"error,omitempty"`
	*fleet.SoftwareInstallDetails
}

func (r orbitGetSoftwareInstallResponse) Error() error { return r.Err }

func getOrbitSoftwareInstallDetails(ctx context.Context, request any, svc fleet.Service) (fleet.Errorer, error) {
	req := request.(*orbitGetSoftwareInstallRequest)
	details, err := svc.GetSoftwareInstallDetails(ctx, req.InstallUUID)
	if err != nil {
		return orbitGetSoftwareInstallResponse{Err: err}, nil
	}

	return orbitGetSoftwareInstallResponse{SoftwareInstallDetails: details}, nil
}

func (svc *Service) GetSoftwareInstallDetails(ctx context.Context, installUUID string) (*fleet.SoftwareInstallDetails, error) {
	// this is not a user-authenticated endpoint
	svc.authz.SkipAuthorization(ctx)

	host, ok := hostctx.FromContext(ctx)
	if !ok {
		return nil, fleet.OrbitError{Message: "internal error: missing host from request context"}
	}

	details, err := svc.ds.GetSoftwareInstallDetails(ctx, installUUID)
	if err != nil {
		return nil, err
	}

	// ensure it cannot get access to a different host's installers
	if details.HostID != host.ID {
		return nil, ctxerr.Wrap(ctx, newNotFoundError(), "no installer found for this host")
	}
	return details, nil
}

// Download Orbit software installer request
/////////////////////////////////////////////////////////////////////////////////

type orbitDownloadSoftwareInstallerRequest struct {
	Alt          string `query:"alt"`
	OrbitNodeKey string `json:"orbit_node_key"`
	InstallerID  uint   `json:"installer_id"`
}

// interface implementation required by the OrbitClient
func (r *orbitDownloadSoftwareInstallerRequest) setOrbitNodeKey(nodeKey string) {
	r.OrbitNodeKey = nodeKey
}

// interface implementation required by orbit authentication
func (r *orbitDownloadSoftwareInstallerRequest) orbitHostNodeKey() string {
	return r.OrbitNodeKey
}

func orbitDownloadSoftwareInstallerEndpoint(ctx context.Context, request interface{}, svc fleet.Service) (fleet.Errorer, error) {
	req := request.(*orbitDownloadSoftwareInstallerRequest)

	downloadRequested := req.Alt == "media"
	if !downloadRequested {
		// TODO: confirm error handling
		return orbitDownloadSoftwareInstallerResponse{Err: &fleet.BadRequestError{Message: "only alt=media is supported"}}, nil
	}

	p, err := svc.OrbitDownloadSoftwareInstaller(ctx, req.InstallerID)
	if err != nil {
		return orbitDownloadSoftwareInstallerResponse{Err: err}, nil
	}
	return orbitDownloadSoftwareInstallerResponse{payload: p}, nil
}

func (svc *Service) OrbitDownloadSoftwareInstaller(ctx context.Context, installerID uint) (*fleet.DownloadSoftwareInstallerPayload, error) {
	// skipauth: No authorization check needed due to implementation returning
	// only license error.
	svc.authz.SkipAuthorization(ctx)

	return nil, fleet.ErrMissingLicense
}

/////////////////////////////////////////////////////////////////////////////////
// Post Orbit software install result
/////////////////////////////////////////////////////////////////////////////////

type orbitPostSoftwareInstallResultRequest struct {
	OrbitNodeKey string `json:"orbit_node_key"`
	*fleet.HostSoftwareInstallResultPayload
}

// interface implementation required by the OrbitClient
func (r *orbitPostSoftwareInstallResultRequest) setOrbitNodeKey(nodeKey string) {
	r.OrbitNodeKey = nodeKey
}

func (r *orbitPostSoftwareInstallResultRequest) orbitHostNodeKey() string {
	return r.OrbitNodeKey
}

type orbitPostSoftwareInstallResultResponse struct {
	Err error `json:"error,omitempty"`
}

func (r orbitPostSoftwareInstallResultResponse) Error() error { return r.Err }
func (r orbitPostSoftwareInstallResultResponse) Status() int  { return http.StatusNoContent }

func postOrbitSoftwareInstallResultEndpoint(ctx context.Context, request interface{}, svc fleet.Service) (fleet.Errorer, error) {
	req := request.(*orbitPostSoftwareInstallResultRequest)
	if err := svc.SaveHostSoftwareInstallResult(ctx, req.HostSoftwareInstallResultPayload); err != nil {
		return orbitPostSoftwareInstallResultResponse{Err: err}, nil
	}
	return orbitPostSoftwareInstallResultResponse{}, nil
}

func (svc *Service) SaveHostSoftwareInstallResult(ctx context.Context, result *fleet.HostSoftwareInstallResultPayload) error {
	// this is not a user-authenticated endpoint
	svc.authz.SkipAuthorization(ctx)

	host, ok := hostctx.FromContext(ctx)
	if !ok {
		return newOsqueryError("internal error: missing host from request context")
	}

	// always use the authenticated host's ID as host_id
	result.HostID = host.ID

	// If this is an intermediate failure that will be retried, handle it specially
	if result.RetriesRemaining > 0 {
		// Create a record while keeping the original pending
		failedExecID, hsi, isNewRecord, err := svc.ds.CreateIntermediateInstallFailureRecord(ctx, result)
		if err != nil {
			return ctxerr.Wrap(ctx, err, "save intermediate install failure")
		}

		// Only create an activity if this is a new record (not a replay of a previous request)
		if isNewRecord {
			if err := svc.NewActivity(
				ctx,
				nil,
				fleet.ActivityTypeInstalledSoftware{
					HostID:              host.ID,
					HostDisplayName:     host.DisplayName(),
					SoftwareTitle:       hsi.SoftwareTitle,
					SoftwarePackage:     hsi.SoftwarePackage,
					InstallUUID:         failedExecID,
					Status:              string(result.Status()),
					SelfService:         hsi.SelfService,
					PolicyID:            nil,
					PolicyName:          nil,
					FromSetupExperience: true, // We assume that retries only occur during setup experience
				},
			); err != nil {
				return ctxerr.Wrap(ctx, err, "create activity for intermediate software installation failure")
			}
		}

		// Don't update setup experience status for intermediate failures
		return nil
	}

	installWasCanceled, err := svc.ds.SetHostSoftwareInstallResult(ctx, result)
	if err != nil {
		return ctxerr.Wrap(ctx, err, "save host software installation result")
	}
	var fromSetupExperience bool
	if fleet.IsSetupExperienceSupported(host.Platform) {
		// This might be a setup experience software install result, so we attempt to update the
		// "Setup experience" status for that item.
		hostUUID, err := fleet.HostUUIDForSetupExperience(host)
		if err != nil {
			return ctxerr.Wrap(ctx, err, "failed to get host's UUID for the setup experience")
		}
		if updated, err := maybeUpdateSetupExperienceStatus(ctx, svc.ds, fleet.SetupExperienceSoftwareInstallResult{
			HostUUID:        hostUUID,
			ExecutionID:     result.InstallUUID,
			InstallerStatus: result.Status(),
		}, true); err != nil {
			return ctxerr.Wrap(ctx, err, "update setup experience status")
		} else if updated {
			level.Debug(svc.logger).Log(
				"msg", "setup experience software install result updated",
				"host_uuid", hostUUID,
				"execution_id", result.InstallUUID,
			)
			fromSetupExperience = true
			// We need to trigger the next step to properly support setup experience on Linux.
			// On Linux, users can skip the setup experience by closing the "My device" page.
			if _, err := svc.EnterpriseOverrides.SetupExperienceNextStep(ctx, host); err != nil {
				return ctxerr.Wrap(ctx, err, "getting next step for host setup experience")
			}
		}
	}

	// do not create a "past" activity if the status is not terminal or if the activity
	// was canceled.
	if status := result.Status(); status != fleet.SoftwareInstallPending && !installWasCanceled {
		hsi, err := svc.ds.GetSoftwareInstallResults(ctx, result.InstallUUID)
		if err != nil {
			return ctxerr.Wrap(ctx, err, "get host software installation result information")
		}

		// Self-Service installs, and installs made by automations, will have a nil author for the activity.
		var user *fleet.User
		if !hsi.SelfService && hsi.UserID != nil {
			user, err = svc.ds.UserByID(ctx, *hsi.UserID)
			if err != nil {
				return ctxerr.Wrap(ctx, err, "get host software installation user")
			}
		}

		var policyName *string
		if hsi.PolicyID != nil {
			if policy, err := svc.ds.PolicyLite(ctx, *hsi.PolicyID); err == nil && policy != nil {
				policyName = &policy.Name // fall back to blank policy name if we can't retrieve the policy
			}
		}

		if err := svc.NewActivity(
			ctx,
			user,
			fleet.ActivityTypeInstalledSoftware{
				HostID:              host.ID,
				HostDisplayName:     host.DisplayName(),
				SoftwareTitle:       hsi.SoftwareTitle,
				SoftwarePackage:     hsi.SoftwarePackage,
				InstallUUID:         result.InstallUUID,
				Status:              string(status),
				SelfService:         hsi.SelfService,
				PolicyID:            hsi.PolicyID,
				PolicyName:          policyName,
				FromSetupExperience: fromSetupExperience,
			},
		); err != nil {
			return ctxerr.Wrap(ctx, err, "create activity for software installation")
		}

		// lastly, queue a vitals refetch so we get a proper view of inventory from osquery
		if status == fleet.SoftwareInstalled {
			if err := svc.ds.UpdateHostRefetchRequested(ctx, host.ID, true); err != nil {
				return ctxerr.Wrap(ctx, err, "queue host vitals refetch")
			}
		}
	}
	return nil
}

/////////////////////////////////////////////////////////////////////////////////
// Get Orbit setup experience status
/////////////////////////////////////////////////////////////////////////////////

type getOrbitSetupExperienceStatusRequest struct {
	OrbitNodeKey string `json:"orbit_node_key"`
	ForceRelease bool   `json:"force_release"`
}

func (r *getOrbitSetupExperienceStatusRequest) setOrbitNodeKey(nodeKey string) {
	r.OrbitNodeKey = nodeKey
}

func (r *getOrbitSetupExperienceStatusRequest) orbitHostNodeKey() string {
	return r.OrbitNodeKey
}

type getOrbitSetupExperienceStatusResponse struct {
	Results *fleet.SetupExperienceStatusPayload `json:"setup_experience_results,omitempty"`
	Err     error                               `json:"error,omitempty"`
}

func (r getOrbitSetupExperienceStatusResponse) Error() error { return r.Err }

func getOrbitSetupExperienceStatusEndpoint(ctx context.Context, request interface{}, svc fleet.Service) (fleet.Errorer, error) {
	req := request.(*getOrbitSetupExperienceStatusRequest)
	results, err := svc.GetOrbitSetupExperienceStatus(ctx, req.OrbitNodeKey, req.ForceRelease)
	if err != nil {
		return &getOrbitSetupExperienceStatusResponse{Err: err}, nil
	}
	return &getOrbitSetupExperienceStatusResponse{Results: results}, nil
}

func (svc *Service) GetOrbitSetupExperienceStatus(ctx context.Context, orbitNodeKey string, forceRelease bool) (*fleet.SetupExperienceStatusPayload, error) {
	// skipauth: No authorization check needed due to implementation returning
	// only license error.
	svc.authz.SkipAuthorization(ctx)

	return nil, fleet.ErrMissingLicense
}

/////////////////////////////////////////////////////////////////////////////////
// Setup experience init
/////////////////////////////////////////////////////////////////////////////////

type orbitSetupExperienceInitRequest struct {
	OrbitNodeKey string `json:"orbit_node_key"`
}

func (r *orbitSetupExperienceInitRequest) setOrbitNodeKey(nodeKey string) {
	r.OrbitNodeKey = nodeKey
}

func (r *orbitSetupExperienceInitRequest) orbitHostNodeKey() string {
	return r.OrbitNodeKey
}

type orbitSetupExperienceInitResponse struct {
	Result fleet.SetupExperienceInitResult `json:"result"`
	Err    error                           `json:"error,omitempty"`
}

func (r orbitSetupExperienceInitResponse) Error() error {
	return r.Err
}

func orbitSetupExperienceInitEndpoint(ctx context.Context, request interface{}, svc fleet.Service) (fleet.Errorer, error) {
	_, ok := request.(*orbitSetupExperienceInitRequest)
	if !ok {
		return nil, fmt.Errorf("internal error: invalid request type: %T", request)
	}
	result, err := svc.SetupExperienceInit(ctx)
	if err != nil {
		return orbitSetupExperienceInitResponse{Err: err}, nil
	}
	return orbitSetupExperienceInitResponse{
		Result: *result,
	}, nil
}

func (svc *Service) SetupExperienceInit(ctx context.Context) (*fleet.SetupExperienceInitResult, error) {
	// skipauth: No authorization check needed due to implementation returning
	// only license error.
	svc.authz.SkipAuthorization(ctx)

	return nil, fleet.ErrMissingLicense
}