package model

import (
	"encoding/json"
	"time"

	"gorm.io/gorm"
)

// User 用户表
type User struct {
	ID           string    `gorm:"type:uuid;primaryKey;default:gen_random_uuid()" json:"id"`
	Username     string    `gorm:"unique" json:"username"`
	Email        string    `gorm:"unique" json:"email"`
	PasswordHash string    `gorm:"column:password_hash" json:"passwordHash"`
	FullName     *string   `gorm:"column:full_name" json:"fullName,omitempty"`
	Role         string    `gorm:"default:user" json:"role"`
	Active       bool      `gorm:"default:true" json:"active"`
	CreatedAt    time.Time `gorm:"type:timestamptz" json:"createdAt"`
	UpdatedAt    time.Time `gorm:"type:timestamptz" json:"updatedAt"`
}

func (User) TableName() string { return "users" }

// Room 房间表
type Room struct {
	ID          string    `gorm:"type:uuid;primaryKey;default:gen_random_uuid()" json:"id"`
	Name        string    `json:"name"`
	Code        *string   `json:"code,omitempty"`
	Location    *string   `json:"location,omitempty"`
	Description *string   `json:"description,omitempty"`
	Capacity    *int      `gorm:"type:int" json:"capacity,omitempty"`
	Stage       *string   `gorm:"size:32" json:"stage,omitempty"`
	Status      string    `gorm:"default:active" json:"status"`
	CreatedAt   time.Time `gorm:"type:timestamptz" json:"createdAt"`
	UpdatedAt   time.Time `gorm:"type:timestamptz" json:"updatedAt"`
}

func (Room) TableName() string { return "rooms" }

// Device 设备表
type Device struct {
	ID           string     `gorm:"type:uuid;primaryKey;default:gen_random_uuid()" json:"id"`
	DeviceKey    string     `gorm:"column:device_key;unique" json:"deviceKey"`
	Name         string     `json:"name"`
	Kind         string     `gorm:"default:sensor" json:"kind"`
	Model        *string    `json:"model,omitempty"`
	Firmware     *string    `json:"firmware,omitempty"`
	OnlineStatus string     `gorm:"column:online_status;default:online" json:"onlineStatus"`
	LastSeen     *time.Time `gorm:"column:last_seen;type:timestamptz" json:"lastSeen,omitempty"`
	RoomID       string     `gorm:"column:room_id;type:uuid;index" json:"roomId"`
	Topic        *string    `gorm:"column:topic" json:"topic,omitempty"` // 设备上行主题（持久化，防止后端重启丢失）
	CreatedAt    time.Time  `gorm:"type:timestamptz" json:"createdAt"`
	UpdatedAt    time.Time  `gorm:"type:timestamptz" json:"updatedAt"`
}

func (Device) TableName() string { return "devices" }

// Sensor 传感器表
type Sensor struct {
	ID        string    `gorm:"type:uuid;primaryKey;default:gen_random_uuid()" json:"id"`
	Name      string    `json:"name"`
	Metric    string    `json:"metric"`
	Unit      *string   `json:"unit,omitempty"`
	DataType  *string   `gorm:"column:data_type" json:"dataType,omitempty"`
	DeviceID  string    `gorm:"column:device_id;type:uuid;index" json:"deviceId"`
	CreatedAt time.Time `gorm:"type:timestamptz" json:"createdAt"`
}

func (Sensor) TableName() string { return "sensors" }

// Threshold 阈值表
type Threshold struct {
	ID              string    `gorm:"type:uuid;primaryKey;default:gen_random_uuid()" json:"id"`
	Name            *string   `json:"name,omitempty"`
	MinValue        float64   `gorm:"column:min_value;type:float" json:"minValue"`
	MaxValue        float64   `gorm:"column:max_value;type:float" json:"maxValue"`
	DebounceSeconds int       `gorm:"column:debounce_seconds;type:int;default:5" json:"debounceSeconds"`
	Severity        int       `gorm:"type:int;default:3" json:"severity"`
	Enabled         bool      `gorm:"default:true" json:"enabled"`
	SensorID        string    `gorm:"column:sensor_id;type:uuid;index" json:"sensorId"`
	CreatedAt       time.Time `gorm:"type:timestamptz" json:"createdAt"`
	UpdatedAt       time.Time `gorm:"type:timestamptz" json:"updatedAt"`
}

func (Threshold) TableName() string { return "thresholds" }

// Alarm 告警表
type Alarm struct {
	ID             string     `gorm:"type:uuid;primaryKey;default:gen_random_uuid()" json:"id"`
	Code           *string    `json:"code,omitempty"`
	Title          *string    `json:"title,omitempty"`
	Message        *string    `json:"message,omitempty"`
	Severity       *string    `json:"severity,omitempty"`
	Open           bool       `gorm:"default:true;index:idx_alarms_device_open_triggered,priority:2" json:"open"`
	Acknowledged   bool       `gorm:"default:false" json:"acknowledged"`
	AcknowledgedAt *time.Time `gorm:"column:acknowledged_at;type:timestamptz" json:"acknowledgedAt,omitempty"`
	TriggeredAt    time.Time  `gorm:"column:triggered_at;type:timestamptz;index:idx_alarms_device_open_triggered,priority:3" json:"triggeredAt"`
	ResolvedAt     *time.Time `gorm:"column:resolved_at;type:timestamptz" json:"resolvedAt,omitempty"`
	DeviceKey      *string    `gorm:"column:device_key;index:idx_alarms_device_open_triggered,priority:1" json:"deviceKey,omitempty"`
	Metric         *string    `json:"metric,omitempty"`
	Value          *float64   `gorm:"type:float" json:"value,omitempty"`
	ThresholdMin   *float64   `gorm:"column:threshold_min;type:float" json:"thresholdMin,omitempty"`
	ThresholdMax   *float64   `gorm:"column:threshold_max;type:float" json:"thresholdMax,omitempty"`
}

func (Alarm) TableName() string { return "alarms" }

// Camera 摄像头表
type Camera struct {
	ID          uint      `gorm:"primaryKey;autoIncrement" json:"id"`
	RoomID      *string   `gorm:"column:room_id;index" json:"roomId,omitempty"`
	Code        string    `gorm:"size:64" json:"code"`
	Name        string    `gorm:"size:128" json:"name"`
	RtspURL     *string   `gorm:"column:rtsp_url;size:512" json:"rtspUrl,omitempty"`
	HTTPURL     *string   `gorm:"column:http_url;size:512" json:"httpUrl,omitempty"`
	Username    *string   `gorm:"size:64" json:"username,omitempty"`
	PasswordEnc *string   `gorm:"column:password_enc;size:255" json:"passwordEnc,omitempty"`
	Position    *string   `gorm:"size:255" json:"position,omitempty"`
	Resolution  *string   `gorm:"size:32" json:"resolution,omitempty"`
	FPS         *int      `gorm:"type:int" json:"fps,omitempty"`
	IsOnline       bool      `gorm:"column:is_online;default:true" json:"isOnline"`
	GbDeviceID     *string   `gorm:"column:gb_device_id;size:20" json:"gbDeviceId,omitempty"`
	GbChannelID    *string   `gorm:"column:gb_channel_id;size:20" json:"gbChannelId,omitempty"`
	GbAuthID       *string   `gorm:"column:gb_auth_id;size:20" json:"gbAuthId,omitempty"`
	GbAuthPassword *string   `gorm:"column:gb_auth_password;size:255" json:"gbAuthPassword,omitempty"`
	GbStreamType   *string   `gorm:"column:gb_stream_type;size:10" json:"gbStreamType,omitempty"`
	GbTransport    *string   `gorm:"column:gb_transport;size:10" json:"gbTransport,omitempty"`
	GbAlarmChannelID *string `gorm:"column:gb_alarm_channel_id;size:20" json:"gbAlarmChannelId,omitempty"`
	GbVoiceChannelID *string `gorm:"column:gb_voice_channel_id;size:20" json:"gbVoiceChannelId,omitempty"`
	GbManufacturer *string   `gorm:"column:gb_manufacturer;size:64" json:"gbManufacturer,omitempty"`
	ManufacturerID *string   `gorm:"column:manufacturer_id;size:64" json:"manufacturerId,omitempty"`
	// 以下字段不在数据库中，运行时通过 WVP API 填充
	StreamURL      *string   `gorm:"-" json:"streamUrl,omitempty"`
	HlsURL         *string   `gorm:"-" json:"hlsUrl,omitempty"`
	FlvURL         *string   `gorm:"-" json:"flvUrl,omitempty"`
	WebrtcURL      *string   `gorm:"-" json:"webrtcUrl,omitempty"`
	SnapshotURL    *string   `gorm:"-" json:"snapshotUrl,omitempty"`
	Online         bool      `gorm:"-" json:"online"`
	Enabled        bool      `gorm:"default:true" json:"enabled"`
	CreatedAt      time.Time `gorm:"type:timestamptz" json:"createdAt"`
	UpdatedAt      time.Time `gorm:"type:timestamptz" json:"updatedAt"`
}

func (Camera) TableName() string { return "cameras" }

// AfterFind 查询后同步 IsOnline → Online
func (c *Camera) AfterFind(tx *gorm.DB) error {
	c.Online = c.IsOnline
	return nil
}

// VideoClip 视频片段表
type VideoClip struct {
	ID          uint       `gorm:"primaryKey;autoIncrement" json:"id"`
	Trigger     string     `gorm:"default:alarm" json:"trigger"`
	FilePath    *string    `gorm:"column:file_path" json:"filePath,omitempty"`
	DurationSec float64    `gorm:"column:duration_sec;type:real;default:0" json:"durationSec"`
	StartAt     time.Time  `gorm:"column:start_at;type:timestamptz" json:"startAt"`
	EndAt       *time.Time `gorm:"column:end_at;type:timestamptz" json:"endAt,omitempty"`
	Resolution  *string    `json:"resolution,omitempty"`
	SizeBytes   *int64     `gorm:"column:size_bytes;type:bigint" json:"sizeBytes,omitempty"`
	Notes       *string    `json:"notes,omitempty"`
	CameraID    string     `gorm:"column:camera_id;index" json:"cameraId"`
	RoomID      *string    `gorm:"column:room_id;index" json:"roomId,omitempty"`
	AlarmID     *string    `gorm:"column:alarm_id;index" json:"alarmId,omitempty"`
	CreatedAt   time.Time  `gorm:"type:timestamptz" json:"createdAt"`
	UpdatedAt   time.Time  `gorm:"type:timestamptz" json:"updatedAt"`
	S3Bucket    *string   `gorm:"column:s3_bucket" json:"s3Bucket,omitempty"`
	S3Key       *string   `gorm:"column:s3_key" json:"s3Key,omitempty"`
	// 以下字段不在数据库中，运行时填充
	PlaybackURL *string `gorm:"-" json:"playbackUrl,omitempty"`
	Format      string  `gorm:"-" json:"format"`
}

func (VideoClip) TableName() string { return "video_clips" }

// AuditLog 审计日志表
type AuditLog struct {
	ID          string          `gorm:"type:uuid;primaryKey;default:gen_random_uuid()" json:"id"`
	UserID      *string         `gorm:"column:user_id;type:uuid;index:idx_audit_logs_user_created,priority:1" json:"userId,omitempty"`
	Username    *string         `json:"username,omitempty"`
	Action      string          `gorm:"index:idx_audit_logs_action_created,priority:1" json:"action"`
	Resource    *string         `gorm:"index:idx_audit_logs_resource_target,priority:1" json:"resource,omitempty"`
	TargetID    *string         `gorm:"column:target_id;index:idx_audit_logs_resource_target,priority:2" json:"targetId,omitempty"`
	Description *string         `json:"description,omitempty"`
	IPAddress   *string         `gorm:"column:ip_address" json:"ipAddress,omitempty"`
	UserAgent   *string         `gorm:"column:user_agent" json:"userAgent,omitempty"`
	Metadata    json.RawMessage `gorm:"column:metadata;type:jsonb" json:"metadata,omitempty"`
	CreatedAt   time.Time       `gorm:"type:timestamptz;index:idx_audit_logs_user_created,priority:2;index:idx_audit_logs_action_created,priority:2" json:"createdAt"`
}

func (AuditLog) TableName() string { return "audit_logs" }

// Telemetry 遥测数据表
type Telemetry struct {
	ID        string    `gorm:"type:uuid;primaryKey;default:gen_random_uuid()" json:"id"`
	DeviceKey string    `gorm:"column:device_key;index:idx_telemetry_device_timestamp,priority:1" json:"deviceKey"`
	Metric    string    `json:"metric"`
	Value     float64   `gorm:"type:float" json:"value"`
	Timestamp time.Time `gorm:"type:timestamptz;index:idx_telemetry_device_timestamp,priority:2" json:"timestamp"`
}

func (Telemetry) TableName() string { return "telemetry" }