package artifacts

import (
	"path/filepath"
)

// SessionPaths contains canonical local paths for one session work directory.
type SessionPaths struct {
	WorkspaceRoot         string
	Root                  string
	InputsDir             string
	AudioDir              string
	TranscriptsDir        string
	TranscriptsRawDir     string
	TranscriptsTrimmedDir string
	ArtifactsDir          string
	ConfigDir             string
	LogsDir               string
	ManifestPath          string
	LockPath              string
}

// SessionWorkDir returns the work directory for one session.
func SessionWorkDir(rootDir, sessionID string) string {
	return filepath.Join(rootDir, "work", sessionID)
}

// SessionRunWorkDir returns the campaign/session/run scoped local work directory.
func SessionRunWorkDir(rootDir, campaign, sessionID, runID string) string {
	return filepath.Join(rootDir, "work", campaign, sessionID, runID)
}

// SessionSpoolAudioDir returns the campaign/session/run scoped local spool audio path.
func SessionSpoolAudioDir(spoolRoot, campaign, sessionID, runID string) string {
	return filepath.Join(spoolRoot, campaign, sessionID, runID, "audio")
}

func buildSessionPaths(workspaceRoot, sessionID string) SessionPaths {
	root := SessionWorkDir(workspaceRoot, sessionID)
	transcripts := filepath.Join(root, "transcripts")
	return SessionPaths{
		WorkspaceRoot:         workspaceRoot,
		Root:                  root,
		InputsDir:             filepath.Join(root, "inputs"),
		AudioDir:              filepath.Join(root, "audio"),
		TranscriptsDir:        transcripts,
		TranscriptsRawDir:     filepath.Join(transcripts, "raw"),
		TranscriptsTrimmedDir: filepath.Join(transcripts, "trimmed"),
		ArtifactsDir:          filepath.Join(root, "artifacts"),
		ConfigDir:             filepath.Join(root, "config"),
		LogsDir:               filepath.Join(root, "logs"),
		ManifestPath:          filepath.Join(root, "manifest.json"),
		LockPath:              filepath.Join(root, ".lock"),
	}
}