package msg

import (
	"github.com/Masterminds/semver/v3"
)

/** Design notes:
 *
 * For server -> client: topic is `client_do_action`
 * For client -> server: topic is `server_do_notify`
 *
 * If you want to upgrade a service, you can send a `RequestDeviceUpdateMsg` to the client,
 * and the client will respond with a `DeviceActionDoneMsg`. When all clients have responded
 * with success, you can send a `ForceDeviceRebootMsg` to the client to reboot the service
 * for the upgrade to take effect.
 *
 */

const ClientDoActionTopic = "client_do_action"
const ServerDoNotifyTopic = "server_do_notify"

// ----- Client -> Server -----

// * Entity: Device
type DeviceHeartbeatMsg struct {
	DeviceID         string `mapstructure:"device_id"`
	LocalStartTime   int64  `mapstructure:"local_start_time"`
	LocalCurrentTime int64  `mapstructure:"local_current_time"`
	IPAddress        string `mapstructure:"ip_address"`
	ServiceName      string `mapstructure:"service_name"`
	ServiceVersion   string `mapstructure:"service_version"` // Compile datetime
	ProtocolVersion  string `mapstructure:"protocol_version"`
}

const DeviceHeartbeatMsgType = "device_heartbeat"

func (m *DeviceHeartbeatMsg) MsgType() string {
	return DeviceHeartbeatMsgType
}

// NOTE: Every time a new version of the protocol is released, this function should be updated
const ProtocolVersion = "0.1.0"

func MakeDeviceHeartbeatMsg(deviceID string, localStartTime, localCurrentTime int64, ipAddress, serviceName, serviceVersion string) DeviceHeartbeatMsg {
	return DeviceHeartbeatMsg{
		DeviceID:         deviceID,
		LocalStartTime:   localStartTime,
		LocalCurrentTime: localCurrentTime,
		IPAddress:        ipAddress,
		ServiceName:      serviceName,
		ServiceVersion:   serviceVersion,
		ProtocolVersion:  ProtocolVersion,
	}
}

func (m *DeviceHeartbeatMsg) IsProtocolVersionCompatible() bool {
	// Check if the protocol version is compatible
	msgVer, err := semver.NewVersion(m.ProtocolVersion)
	if err != nil {
		return false
	}
	constraint, err := semver.NewConstraint(ProtocolVersion)
	if err != nil {
		return false
	}
	return constraint.Check(msgVer)
}

// * Entity: Device
type DeviceActionDoneMsg struct {
	DeviceID        string `mapstructure:"device_id"`
	ActionType      string `mapstructure:"action_type"` // The same as message type
	ActionMsgID     string `mapstructure:"action_msg_id"`
	ActionStartTime int64  `mapstructure:"action_start_time"`
	Status          int    `mapstructure:"status"`
	Msg             string `mapstructure:"msg"` // Can be used to store errors
}

const DeviceActionDoneMsgType = "device_action_done"

func (m *DeviceActionDoneMsg) MsgType() string {
	return DeviceActionDoneMsgType
}

func MakeDeviceActionDoneMsg(deviceID, actionType, actionMsgID string, actionStartTime int64, status int, msg string) DeviceActionDoneMsg {
	return DeviceActionDoneMsg{
		DeviceID:        deviceID,
		ActionType:      actionType,
		ActionMsgID:     actionMsgID,
		ActionStartTime: actionStartTime,
		Status:          status,
		Msg:             msg,
	}
}

// * Entity: Device
type DevicePongMsg struct {
	DeviceID string `mapstructure:"device_id"`
	RecvTime int64  `mapstructure:"recv_time"`
}

const DevicePongMsgType = "device_pong"

func (m *DevicePongMsg) MsgType() string {
	return DevicePongMsgType
}

func MakeDevicePongMsg(deviceID string, recvTime int64) DevicePongMsg {
	return DevicePongMsg{
		DeviceID: deviceID,
		RecvTime: recvTime,
	}
}

// * Entity: Part
type PartUploadStatusChangedMsg struct {
	DeviceID    string `mapstructure:"device_id"`
	StartTime   int64  `mapstructure:"start_time"`
	StreamName  string `mapstructure:"stream_name"`
	PartNumber  int64  `mapstructure:"part_number"`
	TotalPoints int64  `mapstructure:"total_points"`
	Status      string `mapstructure:"status"`        // "success", "failed", "unchanged"
	Msg         string `mapstructure:"msg,omitempty"` // Can be used to store errors
}

const PartUploadStatusChangedMsgType = "part_upload_status_changed"

func (m *PartUploadStatusChangedMsg) MsgType() string {
	return PartUploadStatusChangedMsgType
}

func MakePartUploadStatusChangedMsg(deviceID string, startTime int64, streamName string, partNumber, totalPoints int64, status, msg string) PartUploadStatusChangedMsg {
	return PartUploadStatusChangedMsg{
		DeviceID:    deviceID,
		StartTime:   startTime,
		StreamName:  streamName,
		PartNumber:  partNumber,
		TotalPoints: totalPoints,
		Status:      status,
		Msg:         msg,
	}
}

// * Entity: Part
type PartInsertToStckStatusChangedMsg struct {
	DeviceID    string `mapstructure:"device_id"`
	StartTime   int64  `mapstructure:"start_time"`
	StreamName  string `mapstructure:"stream_name"`
	PartNumber  int64  `mapstructure:"part_number"`
	TotalPoints int64  `mapstructure:"total_points"`
	Status      string `mapstructure:"status"`        // "success", "failed", "unchanged"
	Msg         string `mapstructure:"msg,omitempty"` // Can be used to store errors
}

const PartInsertToStckStatusChangedMsgType = "part_insert_to_stck_status_changed"

func (m *PartInsertToStckStatusChangedMsg) MsgType() string {
	return PartInsertToStckStatusChangedMsgType
}

func MakePartInsertToStckStatusChangedMsg(deviceID string, startTime int64, streamName string, partNumber, totalPoints int64, status, msg string) PartInsertToStckStatusChangedMsg {
	return PartInsertToStckStatusChangedMsg{
		DeviceID:    deviceID,
		StartTime:   startTime,
		StreamName:  streamName,
		PartNumber:  partNumber,
		TotalPoints: totalPoints,
		Status:      status,
		Msg:         msg,
	}
}

// * Entity: Stream
type StreamUploadStatusChangedMsg struct {
	DeviceID         string      `mapstructure:"device_id"`
	StartTime        int64       `mapstructure:"start_time"`
	StreamName       string      `mapstructure:"stream_name"`
	TotalPointsCount int64       `mapstructure:"total_points_count"`
	TotalPartsCount  int64       `mapstructure:"total_parts_count"`
	SuccessCount     int64       `mapstructure:"success_count"`
	FailedCount      int64       `mapstructure:"failed_count"`
	UnchangedCount   int64       `mapstructure:"unchanged_count"`
	Details          interface{} `mapstructure:"details,omitempty"` // Currently unused
}

const StreamUploadStatusChangedMsgType = "stream_upload_status_changed"

func (m *StreamUploadStatusChangedMsg) MsgType() string {
	return StreamUploadStatusChangedMsgType
}

func MakeStreamUploadStatusChangedMsg(deviceID string, startTime int64, streamName string, totalPointsCount int64, totalPartsCount, successCount, failedCount, unchangedCount int64) StreamUploadStatusChangedMsg {
	return StreamUploadStatusChangedMsg{
		DeviceID:         deviceID,
		StartTime:        startTime,
		StreamName:       streamName,
		TotalPointsCount: totalPointsCount,
		TotalPartsCount:  totalPartsCount,
		SuccessCount:     successCount,
		FailedCount:      failedCount,
		UnchangedCount:   unchangedCount,
	}
}

// * Entity: Stream
type StreamInsertToStckStatusChangedMsg struct {
	DeviceID         string      `mapstructure:"device_id"`
	StartTime        int64       `mapstructure:"start_time"`
	StreamName       string      `mapstructure:"stream_name"`
	TotalPointsCount int64       `mapstructure:"total_points_count"`
	TotalPartsCount  int64       `mapstructure:"total_parts_count"`
	SuccessCount     int64       `mapstructure:"success_count"`
	FailedCount      int64       `mapstructure:"failed_count"`
	UnchangedCount   int64       `mapstructure:"unchanged_count"`
	Details          interface{} `mapstructure:"details,omitempty"` // Currently unused
}

const StreamInsertToStckStatusChangedMsgType = "stream_insert_to_stck_status_changed"

func (m *StreamInsertToStckStatusChangedMsg) MsgType() string {
	return StreamInsertToStckStatusChangedMsgType
}

func MakeStreamInsertToStckStatusChangedMsg(deviceID string, startTime int64, streamName string, totalPointsCount int64, totalPartsCount, successCount, failedCount, unchangedCount int64) StreamInsertToStckStatusChangedMsg {
	return StreamInsertToStckStatusChangedMsg{
		DeviceID:         deviceID,
		StartTime:        startTime,
		StreamName:       streamName,
		TotalPointsCount: totalPointsCount,
		TotalPartsCount:  totalPartsCount,
		SuccessCount:     successCount,
		FailedCount:      failedCount,
		UnchangedCount:   unchangedCount,
	}
}

// ----- Server -> Client -----

// * Entity: Device
type ForceDeviceRebootMsg struct {
	DeviceID string `mapstructure:"device_id"` // Specific device ID or `*` for all devices
}

const ForceDeviceRebootMsgType = "force_device_reboot"

func (m *ForceDeviceRebootMsg) MsgType() string {
	return ForceDeviceRebootMsgType
}

func MakeForceDeviceRebootMsg(deviceID string) ForceDeviceRebootMsg {
	return ForceDeviceRebootMsg{
		DeviceID: deviceID,
	}
}

// * Entity: Device
type ForceDeviceSendHeartbeatMsg struct {
	DeviceID string `mapstructure:"device_id"` // Specific device ID or `*` for all devices
}

const ForceDeviceSendHeartbeatMsgType = "force_device_send_heartbeat"

func (m *ForceDeviceSendHeartbeatMsg) MsgType() string {
	return ForceDeviceSendHeartbeatMsgType
}

func MakeForceDeviceSendHeartbeatMsg(deviceID string) ForceDeviceSendHeartbeatMsg {
	return ForceDeviceSendHeartbeatMsg{
		DeviceID: deviceID,
	}
}

// * Entity: Device
// * Response: DeviceActionDoneMsg
type RequestDeviceUpdateMsg struct {
	DeviceID         string `mapstructure:"device_id"` // Specific device ID or `*` for all devices
	ServiceName      string `mapstructure:"service_name"`
	ServiceVersion   string `mapstructure:"service_version"`
	ServiceBinaryURL string `mapstructure:"service_binary_url"`
	BinaryHash       string `mapstructure:"binary_hash"`
}

const RequestDeviceUpdateMsgType = "request_device_update"

func (m *RequestDeviceUpdateMsg) MsgType() string {
	return RequestDeviceUpdateMsgType
}

func MakeRequestDeviceUpdateMsg(deviceID, serviceName, serviceVersion, serviceBinaryURL, binaryHash string) RequestDeviceUpdateMsg {
	return RequestDeviceUpdateMsg{
		DeviceID:         deviceID,
		ServiceName:      serviceName,
		ServiceVersion:   serviceVersion,
		ServiceBinaryURL: serviceBinaryURL,
		BinaryHash:       binaryHash,
	}
}

// * Entity: Device
// * Response: DeviceActionDoneMsg
type RequestDeviceUploadLogsToMinioMsg struct {
	DeviceID       string `mapstructure:"device_id"` // Specific device ID or `*` for all devices
	RemoteBucket   string `mapstructure:"remote_bucket"`
	RemoteBasePath string `mapstructure:"remote_base_path"`
}

const RequestDeviceUploadLogsToMinioMsgType = "request_device_upload_logs_to_minio"

func (m *RequestDeviceUploadLogsToMinioMsg) MsgType() string {
	return RequestDeviceUploadLogsToMinioMsgType
}

func MakeRequestDeviceUploadLogsToMinioMsg(deviceID, remoteBucket, remoteBasePath string) RequestDeviceUploadLogsToMinioMsg {
	return RequestDeviceUploadLogsToMinioMsg{
		DeviceID:       deviceID,
		RemoteBucket:   remoteBucket,
		RemoteBasePath: remoteBasePath,
	}
}

// * Entity: Device
// * Response: DevicePongMsg
type DevicePingMsg struct {
	DeviceID string `mapstructure:"device_id"` // Specific device ID or `*` for all devices
}

const DevicePingMsgType = "device_ping"

func (m *DevicePingMsg) MsgType() string {
	return DevicePingMsgType
}

func MakeDevicePingMsg(deviceID string) DevicePingMsg {
	return DevicePingMsg{
		DeviceID: deviceID,
	}
}

// * Entity: Device
// * Response: DeviceActionDoneMsg
type RequestDeviceExecuteShellScriptMsg struct {
	DeviceID string `mapstructure:"device_id"` // Specific device ID or `*` for all devices
	Script   string `mapstructure:"script"`
}

const RequestDeviceExecuteShellScriptMsgType = "request_device_execute_shell_script"

func (m *RequestDeviceExecuteShellScriptMsg) MsgType() string {
	return RequestDeviceExecuteShellScriptMsgType
}

func MakeRequestDeviceExecuteShellScriptMsg(deviceID, script string) RequestDeviceExecuteShellScriptMsg {
	return RequestDeviceExecuteShellScriptMsg{
		DeviceID: deviceID,
		Script:   script,
	}
}