308 lines
8.5 KiB
Go
308 lines
8.5 KiB
Go
package stage
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import (
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"context"
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"crypto/sha256"
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"encoding/hex"
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"fmt"
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"os"
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"path/filepath"
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"sort"
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"strings"
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"gitea.maximumdirect.net/eric/narratio/internal/artifacts"
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"gitea.maximumdirect.net/eric/narratio/internal/config"
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"gitea.maximumdirect.net/eric/narratio/internal/manifest"
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"gopkg.in/yaml.v3"
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)
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type prepareStage struct{}
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func (prepareStage) Name() string { return "prepare" }
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func (prepareStage) Declares() IODecl {
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return IODecl{
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Inputs: []artifacts.Ref{
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{Kind: "config", Category: "inputs", RelativePath: "session.yml"},
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{Kind: "config", Category: "inputs", RelativePath: "pipeline.resolved.yml"},
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{Kind: "config", Category: "inputs", RelativePath: "speakers.yml"},
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{Kind: "config", Category: "inputs", RelativePath: "autocorrect.yml"},
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{Kind: "config", Category: "inputs", RelativePath: "glossary.yml"},
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{Kind: "audio", Category: "audio", RelativePath: "*.flac"},
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},
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}
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}
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func (prepareStage) Run(_ context.Context, env *Env, m *manifest.Manifest) (*StageResult, error) {
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if env == nil || env.Config == nil {
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return nil, fmt.Errorf("prepare: stage environment config is required")
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}
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if env.ArtifactStore == nil {
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return nil, fmt.Errorf("prepare: artifact store is required")
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}
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if env.Config.Session == nil || env.Config.Pipeline == nil {
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return nil, fmt.Errorf("prepare: resolved config must include pipeline and session")
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}
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sessionID := strings.TrimSpace(m.SessionID)
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if sessionID == "" {
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sessionID = strings.TrimSpace(env.Config.Session.SessionID)
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}
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if sessionID == "" {
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return nil, fmt.Errorf("prepare: session id is required")
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}
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paths, err := env.ArtifactStore.EnsureLayout(sessionID)
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if err != nil {
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return nil, fmt.Errorf("prepare: ensure workdir layout: %w", err)
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}
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sessionSrc := env.Config.SessionPath
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if err := requireFile(sessionSrc, "session.yml"); err != nil {
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return nil, fmt.Errorf("prepare: %w", err)
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}
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sessionDir := filepath.Dir(sessionSrc)
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speakersSrc, err := resolvePath(sessionDir, env.Config.Session.Inputs.SpeakersFile)
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if err != nil {
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return nil, fmt.Errorf("prepare: speakers path: %w", err)
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}
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autocorrectSrc, err := resolvePath(sessionDir, env.Config.Session.Inputs.AutocorrectFile)
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if err != nil {
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return nil, fmt.Errorf("prepare: autocorrect path: %w", err)
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}
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glossarySrc, err := resolvePath(sessionDir, env.Config.Session.Inputs.GlossaryFile)
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if err != nil {
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return nil, fmt.Errorf("prepare: glossary path: %w", err)
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}
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for _, required := range []struct {
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path string
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name string
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}{
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{path: speakersSrc, name: "speakers.yml"},
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{path: autocorrectSrc, name: "autocorrect.yml"},
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{path: glossarySrc, name: "glossary.yml"},
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} {
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if err := requireFile(required.path, required.name); err != nil {
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return nil, fmt.Errorf("prepare: %w", err)
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}
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}
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resolvedAudio, err := resolveAudioFiles(sessionDir, env.Config.Session.Inputs)
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if err != nil {
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return nil, fmt.Errorf("prepare: resolve audio inputs: %w", err)
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}
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copiedByDest := map[string]string{}
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inputs := make([]manifest.InputRecord, 0, 5+len(resolvedAudio))
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registerInput := func(kind, path, checksum string) {
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inputs = append(inputs, manifest.InputRecord{Kind: kind, Path: path, Checksum: checksum})
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}
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sessionDst := filepath.Join(paths.InputsDir, "session.yml")
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sessionChecksum, err := copyFileIfChanged(env.ArtifactStore, sessionSrc, sessionDst)
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if err != nil {
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return nil, fmt.Errorf("prepare: materialize session.yml: %w", err)
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}
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registerInput("session_config", sessionDst, sessionChecksum)
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pipelineResolvedBytes, err := renderResolvedPipeline(env.Config.Pipeline)
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if err != nil {
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return nil, fmt.Errorf("prepare: render pipeline.resolved.yml: %w", err)
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}
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pipelineDst := filepath.Join(paths.InputsDir, "pipeline.resolved.yml")
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pipelineChecksum, err := writeBytesIfChanged(env.ArtifactStore, pipelineDst, pipelineResolvedBytes)
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if err != nil {
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return nil, fmt.Errorf("prepare: materialize pipeline.resolved.yml: %w", err)
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}
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registerInput("pipeline_resolved", pipelineDst, pipelineChecksum)
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for _, cfgFile := range []struct {
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kind string
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src string
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dst string
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}{
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{kind: "speakers", src: speakersSrc, dst: filepath.Join(paths.InputsDir, "speakers.yml")},
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{kind: "autocorrect", src: autocorrectSrc, dst: filepath.Join(paths.InputsDir, "autocorrect.yml")},
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{kind: "glossary", src: glossarySrc, dst: filepath.Join(paths.InputsDir, "glossary.yml")},
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} {
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checksum, err := copyFileIfChanged(env.ArtifactStore, cfgFile.src, cfgFile.dst)
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if err != nil {
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return nil, fmt.Errorf("prepare: materialize %s: %w", cfgFile.kind, err)
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}
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registerInput(cfgFile.kind, cfgFile.dst, checksum)
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}
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for _, src := range resolvedAudio {
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base := filepath.Base(src)
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if prev, exists := copiedByDest[base]; exists && prev != src {
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return nil, fmt.Errorf("prepare: duplicate audio basename %q from %q and %q", base, prev, src)
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}
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copiedByDest[base] = src
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dst := filepath.Join(paths.AudioDir, base)
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checksum, err := copyFileIfChanged(env.ArtifactStore, src, dst)
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if err != nil {
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return nil, fmt.Errorf("prepare: materialize audio %q: %w", base, err)
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}
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registerInput("audio", dst, checksum)
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}
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sort.Slice(inputs, func(i, j int) bool {
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if inputs[i].Kind != inputs[j].Kind {
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return inputs[i].Kind < inputs[j].Kind
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}
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return inputs[i].Path < inputs[j].Path
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})
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m.Inputs = inputs
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return &StageResult{
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Metadata: map[string]any{
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"prepared": true,
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"stage": "prepare",
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"inputs_count": len(inputs),
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"audio_files_resolved": len(resolvedAudio),
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},
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}, nil
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}
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func renderResolvedPipeline(cfg *config.PipelineConfig) ([]byte, error) {
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return yaml.Marshal(cfg)
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}
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func resolveAudioFiles(sessionDir string, inputs config.SessionInputsConfig) ([]string, error) {
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if len(inputs.AudioFiles) > 0 {
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out := make([]string, 0, len(inputs.AudioFiles))
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for _, p := range inputs.AudioFiles {
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resolved, err := resolvePath(sessionDir, p)
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if err != nil {
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return nil, err
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}
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if !isFlac(resolved) {
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return nil, fmt.Errorf("audio file %q must have .flac extension", resolved)
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}
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if err := requireFile(resolved, "audio file"); err != nil {
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return nil, err
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}
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out = append(out, resolved)
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}
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sort.Strings(out)
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return out, nil
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}
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audioDir, err := resolvePath(sessionDir, inputs.AudioDir)
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if err != nil {
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return nil, err
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}
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entries, err := os.ReadDir(audioDir)
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if err != nil {
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return nil, fmt.Errorf("read audio directory %q: %w", audioDir, err)
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}
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out := make([]string, 0)
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for _, entry := range entries {
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if entry.IsDir() {
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continue
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}
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name := entry.Name()
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full := filepath.Join(audioDir, name)
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if !isFlac(full) {
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continue
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}
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if err := requireFile(full, "audio file"); err != nil {
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return nil, err
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}
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out = append(out, full)
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}
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if len(out) == 0 {
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return nil, fmt.Errorf("no .flac files found in audio directory %q", audioDir)
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}
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sort.Strings(out)
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return out, nil
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}
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func resolvePath(baseDir, p string) (string, error) {
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trimmed := strings.TrimSpace(p)
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if trimmed == "" {
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return "", fmt.Errorf("path is required")
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}
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if filepath.IsAbs(trimmed) {
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return filepath.Clean(trimmed), nil
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}
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return filepath.Clean(filepath.Join(baseDir, trimmed)), nil
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}
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func requireFile(path string, label string) error {
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if strings.TrimSpace(path) == "" {
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return fmt.Errorf("%s path is required", label)
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}
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info, err := os.Stat(path)
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if err != nil {
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return fmt.Errorf("%s %q not found: %w", label, path, err)
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}
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if info.IsDir() {
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return fmt.Errorf("%s %q is a directory", label, path)
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}
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return nil
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}
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func isFlac(path string) bool {
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return strings.EqualFold(filepath.Ext(path), ".flac")
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}
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func copyFileIfChanged(store artifacts.Store, src, dst string) (string, error) {
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srcChecksum, err := store.Checksum(src)
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if err != nil {
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return "", err
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}
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exists, err := store.Exists(dst)
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if err != nil {
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return "", err
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}
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if exists {
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dstChecksum, err := store.Checksum(dst)
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if err != nil {
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return "", err
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}
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if dstChecksum == srcChecksum {
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return srcChecksum, nil
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}
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}
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data, err := os.ReadFile(src)
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if err != nil {
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return "", err
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}
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if err := store.WriteFileAtomic(dst, data, 0o644); err != nil {
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return "", err
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}
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return srcChecksum, nil
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}
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func writeBytesIfChanged(store artifacts.Store, dst string, data []byte) (string, error) {
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digest := sha256.Sum256(data)
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targetChecksum := hex.EncodeToString(digest[:])
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exists, err := store.Exists(dst)
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if err != nil {
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return "", err
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}
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if exists {
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dstChecksum, err := store.Checksum(dst)
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if err != nil {
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return "", err
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}
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if dstChecksum == targetChecksum {
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return targetChecksum, nil
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}
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}
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if err := store.WriteFileAtomic(dst, data, 0o644); err != nil {
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return "", err
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}
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return targetChecksum, nil
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}
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