package models

// Channel represents a single IPTV channel parsed from an M3U playlist.
type Channel struct {
	ID        string `json:"id"`
	Name      string `json:"name"`
	Group     string `json:"group"`
	LogoURL   string `json:"logo_url"`
	StreamURL string `json:"stream_url"`
}

// StreamHealth holds real-time FFmpeg progress metrics for diagnosing issues.
// Speed < 1x indicates the upstream IPTV source can't deliver fast enough.
// Drop frames > 0 with speed ~1x suggests local processing issues.
type StreamHealth struct {
	Speed      string `json:"speed"`       // "1.00x" — upstream delivery rate
	FPS        string `json:"fps"`         // frames per second being processed
	Bitrate    string `json:"bitrate"`     // output bitrate
	DropFrames string `json:"drop_frames"` // frames dropped by FFmpeg
	DupFrames  string `json:"dup_frames"`  // frames duplicated by FFmpeg
}

// StreamStatus represents the current streaming state.
type StreamStatus struct {
	Source          string        `json:"source"`       // "obs" or "iptv"
	ChannelName     string        `json:"channel_name"` // current IPTV channel name (empty if OBS)
	Live            bool          `json:"live"`
	Transitioning   bool          `json:"transitioning"`    // true while switching to a new channel
	UpstreamDown    bool          `json:"upstream_down"`    // true when no data is detected from the selected upstream
	PlaylistVersion int64         `json:"playlist_version"` // increments when playlist reloads
	Health          *StreamHealth `json:"health,omitempty"`
}

// ProcessInfo represents the status of a managed child process.
type ProcessInfo struct {
	Running bool   `json:"running"`
	PID     int    `json:"pid"`
	Uptime  string `json:"uptime"`
	Error   string `json:"error,omitempty"`
}

// SystemStatus holds status for all managed processes.
type SystemStatus struct {
	MediaMTX ProcessInfo `json:"mediamtx"`
	FFmpeg   ProcessInfo `json:"ffmpeg"`
}