| 1 | package workspacestate |
| 2 | |
| 3 | import ( |
| 4 | "bytes" |
| 5 | "context" |
| 6 | "encoding/json" |
| 7 | "errors" |
| 8 | "fmt" |
| 9 | "os" |
| 10 | "path/filepath" |
| 11 | "slices" |
| 12 | "strings" |
| 13 | "sync" |
| 14 | "time" |
| 15 | |
| 16 | "reasonix/internal/fileutil" |
| 17 | filelock "reasonix/internal/identitylock" |
| 18 | ) |
| 19 | |
| 20 | const ( |
| 21 | SchemaVersion = 3 |
| 22 | GlobalWorkspaceID = "global" |
| 23 | ) |
| 24 | |
| 25 | var ( |
| 26 | ErrUnsupportedVersion = errors.New("workspace state version is unsupported") |
| 27 | ErrWorkspaceNotFound = errors.New("workspace is not registered") |
| 28 | ErrSessionNotFound = errors.New("session is not registered") |
| 29 | ErrMutationConflict = errors.New("workspace mutation conflicts with persisted state") |
| 30 | ) |
| 31 | |
| 32 | type Workspace struct { |
| 33 | Organization *Organization `json:"organization,omitempty"` |
| 34 | ID string `json:"id"` |
| 35 | Root string `json:"root"` |
| 36 | Title string `json:"title"` |
| 37 | SessionIDs []string `json:"sessionIds"` |
| 38 | Visible bool `json:"visible"` |
| 39 | CreatedAt time.Time `json:"createdAt"` |
| 40 | UpdatedAt time.Time `json:"updatedAt"` |
| 41 | extra map[string]json.RawMessage |
| 42 | } |
| 43 | |
| 44 | type PendingCreate struct { |
| 45 | ParentSessionID string `json:"parentSessionId,omitempty"` |
| 46 | Presentation *Presentation `json:"presentation,omitempty"` |
| 47 | OperationID string `json:"operationId"` |
| 48 | WorkspaceID string `json:"workspaceId"` |
| 49 | SessionID string `json:"sessionId"` |
| 50 | CreatedAt time.Time `json:"createdAt"` |
| 51 | ArchiveSource string `json:"archiveSource,omitempty"` |
| 52 | extra map[string]json.RawMessage |
| 53 | } |
| 54 | |
| 55 | type State struct { |
| 56 | Version int `json:"version"` |
| 57 | Generation uint64 `json:"generation"` |
| 58 | Initialized bool `json:"initialized"` |
| 59 | WorkspaceIDs []string `json:"workspaceIds"` |
| 60 | Workspaces map[string]Workspace `json:"workspaces"` |
| 61 | ArchivedSessionIDs []string `json:"archivedSessionIds"` |
| 62 | PendingCreates map[string]PendingCreate `json:"pendingCreates"` |
| 63 | SessionStates map[string]SessionState `json:"sessionStates"` |
| 64 | SourceMappings map[string]SourceMapping `json:"sourceMappings"` |
| 65 | PendingOperations map[string]Operation `json:"pendingOperations"` |
| 66 | RecoveryEntries map[string]RecoveryEntry `json:"recoveryEntries"` |
| 67 | Presentation map[string]Presentation `json:"presentation"` |
| 68 | extra map[string]json.RawMessage |
| 69 | } |
| 70 | |
| 71 | type Store struct { |
| 72 | path string |
| 73 | mu sync.Mutex |
| 74 | beforeUpgrade func(context.Context) error |
| 75 | } |
| 76 | |
| 77 | func NewStore(path string, beforeUpgrade ...func(context.Context) error) *Store { |
| 78 | store := &Store{path: filepath.Clean(path)} |
| 79 | if len(beforeUpgrade) > 0 { |
| 80 | store.beforeUpgrade = beforeUpgrade[0] |
| 81 | } |
| 82 | return store |
| 83 | } |
| 84 | |
| 85 | func (s *Store) Path() string { |
| 86 | if s == nil { |
| 87 | return "" |
| 88 | } |
| 89 | return s.path |
| 90 | } |
| 91 | |
| 92 | func (s *Store) Load(ctx context.Context) (State, error) { |
| 93 | if s == nil || strings.TrimSpace(s.path) == "" || s.path == "." { |
| 94 | return State{}, errors.New("workspace state path is required") |
| 95 | } |
| 96 | s.mu.Lock() |
| 97 | defer s.mu.Unlock() |
| 98 | if err := ctx.Err(); err != nil { |
| 99 | return State{}, err |
| 100 | } |
| 101 | state, err := load(s.path) |
| 102 | if err != nil { |
| 103 | return State{}, err |
| 104 | } |
| 105 | return cloneState(state) |
| 106 | } |
| 107 | |
| 108 | func (s *Store) RenameWorkspace(ctx context.Context, workspaceID, title string) error { |
| 109 | return s.mutate(ctx, func(state *State) error { |
| 110 | workspace, ok := state.Workspaces[strings.TrimSpace(workspaceID)] |
| 111 | if !ok { |
| 112 | return ErrWorkspaceNotFound |
| 113 | } |
| 114 | workspace.Title = strings.TrimSpace(title) |
| 115 | workspace.UpdatedAt = time.Now().UTC() |
| 116 | state.Workspaces[workspace.ID] = workspace |
| 117 | return nil |
| 118 | }) |
| 119 | } |
| 120 | |
| 121 | func (s *Store) SetWorkspaceVisible(ctx context.Context, workspaceID string, visible bool) error { |
| 122 | return s.mutate(ctx, func(state *State) error { |
| 123 | workspace, ok := state.Workspaces[strings.TrimSpace(workspaceID)] |
| 124 | if !ok { |
| 125 | return ErrWorkspaceNotFound |
| 126 | } |
| 127 | workspace.Visible = visible |
| 128 | workspace.UpdatedAt = time.Now().UTC() |
| 129 | state.Workspaces[workspace.ID] = workspace |
| 130 | return nil |
| 131 | }) |
| 132 | } |
| 133 | |
| 134 | func (s *Store) MoveWorkspace(ctx context.Context, workspaceID, beforeWorkspaceID string) error { |
| 135 | workspaceID = strings.TrimSpace(workspaceID) |
| 136 | beforeWorkspaceID = strings.TrimSpace(beforeWorkspaceID) |
| 137 | return s.mutate(ctx, func(state *State) error { |
| 138 | if _, ok := state.Workspaces[workspaceID]; !ok { |
| 139 | return ErrWorkspaceNotFound |
| 140 | } |
| 141 | if beforeWorkspaceID != "" { |
| 142 | if _, ok := state.Workspaces[beforeWorkspaceID]; !ok { |
| 143 | return ErrWorkspaceNotFound |
| 144 | } |
| 145 | } |
| 146 | state.WorkspaceIDs = insertBefore(remove(state.WorkspaceIDs, workspaceID), workspaceID, beforeWorkspaceID) |
| 147 | return nil |
| 148 | }) |
| 149 | } |
| 150 | |
| 151 | func (s *Store) BeginCreate(ctx context.Context, pending PendingCreate) error { |
| 152 | pending.OperationID = strings.TrimSpace(pending.OperationID) |
| 153 | pending.WorkspaceID = strings.TrimSpace(pending.WorkspaceID) |
| 154 | pending.SessionID = strings.TrimSpace(pending.SessionID) |
| 155 | if pending.OperationID == "" || pending.WorkspaceID == "" || pending.SessionID == "" { |
| 156 | return errors.New("pending create requires operation, workspace, and session ids") |
| 157 | } |
| 158 | return s.mutate(ctx, func(state *State) error { |
| 159 | if _, ok := state.Workspaces[pending.WorkspaceID]; !ok { |
| 160 | return ErrWorkspaceNotFound |
| 161 | } |
| 162 | if state.SessionStates[pending.SessionID].Lifecycle == Deleted { |
| 163 | return ErrMutationConflict |
| 164 | } |
| 165 | if current, ok := state.PendingCreates[pending.SessionID]; ok { |
| 166 | if current.OperationID == pending.OperationID && current.WorkspaceID == pending.WorkspaceID { |
| 167 | return nil |
| 168 | } |
| 169 | return ErrMutationConflict |
| 170 | } |
| 171 | if owner, ok := sessionOwner(*state, pending.SessionID); ok && owner != pending.WorkspaceID { |
| 172 | return ErrMutationConflict |
| 173 | } |
| 174 | if pending.CreatedAt.IsZero() { |
| 175 | pending.CreatedAt = time.Now().UTC() |
| 176 | } |
| 177 | state.PendingCreates[pending.SessionID] = pending |
| 178 | return nil |
| 179 | }) |
| 180 | } |
| 181 | |
| 182 | func (s *Store) AttachSession(ctx context.Context, operationID, workspaceID, sessionID, beforeSessionID string) error { |
| 183 | return s.attachSession(ctx, operationID, workspaceID, sessionID, beforeSessionID, "", nil) |
| 184 | } |
| 185 | |
| 186 | // AttachSessionFromSourceIfUnchanged publishes a derived child only while its |
| 187 | // resolved source is still active, in the same workspace, and at the same |
| 188 | // lifecycle generation. |
| 189 | func (s *Store) AttachSessionFromSourceIfUnchanged( |
| 190 | ctx context.Context, |
| 191 | operationID, workspaceID, sessionID, beforeSessionID, sourceSessionID string, |
| 192 | sourceGeneration uint64, |
| 193 | ) error { |
| 194 | return s.attachSession(ctx, operationID, workspaceID, sessionID, beforeSessionID, sourceSessionID, &sourceGeneration) |
| 195 | } |
| 196 | |
| 197 | func (s *Store) attachSession( |
| 198 | ctx context.Context, |
| 199 | operationID, workspaceID, sessionID, beforeSessionID, sourceSessionID string, |
| 200 | sourceGeneration *uint64, |
| 201 | ) error { |
| 202 | operationID, workspaceID, sessionID = strings.TrimSpace(operationID), strings.TrimSpace(workspaceID), strings.TrimSpace(sessionID) |
| 203 | if workspaceID == "" || sessionID == "" { |
| 204 | return errors.New("attach requires workspace and session ids") |
| 205 | } |
| 206 | return s.mutate(ctx, func(state *State) error { |
| 207 | if sourceGeneration != nil { |
| 208 | sourceSessionID = strings.TrimSpace(sourceSessionID) |
| 209 | sourceState := state.SessionStates[sourceSessionID] |
| 210 | sourceOwner, owned := sessionOwner(*state, sourceSessionID) |
| 211 | if sourceSessionID == "" || !owned || sourceOwner != workspaceID || |
| 212 | sourceState.Lifecycle != Active || sourceState.Generation != *sourceGeneration { |
| 213 | return ErrMutationConflict |
| 214 | } |
| 215 | } |
| 216 | if state.SessionStates[sessionID].Lifecycle == Deleted { |
| 217 | return ErrMutationConflict |
| 218 | } |
| 219 | workspace, ok := state.Workspaces[workspaceID] |
| 220 | if !ok { |
| 221 | return ErrWorkspaceNotFound |
| 222 | } |
| 223 | if owner, owned := sessionOwner(*state, sessionID); owned { |
| 224 | if owner != workspaceID { |
| 225 | return ErrMutationConflict |
| 226 | } |
| 227 | delete(state.PendingCreates, sessionID) |
| 228 | return nil |
| 229 | } |
| 230 | if operationID != "" { |
| 231 | pending, ok := state.PendingCreates[sessionID] |
| 232 | if !ok || pending.OperationID != operationID || pending.WorkspaceID != workspaceID { |
| 233 | return ErrMutationConflict |
| 234 | } |
| 235 | } |
| 236 | workspace.SessionIDs = insertBefore(workspace.SessionIDs, sessionID, beforeSessionID) |
| 237 | if sourceSessionID == "" { |
| 238 | sourceSessionID = state.PendingCreates[sessionID].ParentSessionID |
| 239 | } |
| 240 | attachOrganizationSession(&workspace, sessionID, sourceSessionID) |
| 241 | mirrorOrganizationOrder(&workspace) |
| 242 | if pending, ok := state.PendingCreates[sessionID]; ok && pending.Presentation != nil { |
| 243 | state.Presentation[sessionID] = *pending.Presentation |
| 244 | } |
| 245 | workspace.UpdatedAt = time.Now().UTC() |
| 246 | state.Workspaces[workspaceID] = workspace |
| 247 | delete(state.PendingCreates, sessionID) |
| 248 | return nil |
| 249 | }) |
| 250 | } |
| 251 | |
| 252 | // CommitRotation atomically publishes a prepared replacement into its |
| 253 | // workspace and, for Clear, archives the source without removing its stable |
| 254 | // position from the registry. |
| 255 | func (s *Store) CommitRotation(ctx context.Context, operationID, workspaceID, sessionID, beforeSessionID, archiveSessionID string) error { |
| 256 | operationID, workspaceID, sessionID = strings.TrimSpace(operationID), strings.TrimSpace(workspaceID), strings.TrimSpace(sessionID) |
| 257 | archiveSessionID = strings.TrimSpace(archiveSessionID) |
| 258 | if operationID == "" || workspaceID == "" || sessionID == "" { |
| 259 | return errors.New("rotation commit requires operation, workspace, and session ids") |
| 260 | } |
| 261 | return s.mutate(ctx, func(state *State) error { |
| 262 | workspace, ok := state.Workspaces[workspaceID] |
| 263 | if !ok { |
| 264 | return ErrWorkspaceNotFound |
| 265 | } |
| 266 | pending, ok := state.PendingCreates[sessionID] |
| 267 | if !ok || pending.OperationID != operationID || pending.WorkspaceID != workspaceID { |
| 268 | if owner, attached := sessionOwner(*state, sessionID); !attached || owner != workspaceID { |
| 269 | return ErrMutationConflict |
| 270 | } |
| 271 | } else if owner, attached := sessionOwner(*state, sessionID); attached && owner != workspaceID { |
| 272 | return ErrMutationConflict |
| 273 | } else if !attached { |
| 274 | workspace.SessionIDs = insertBefore(workspace.SessionIDs, sessionID, beforeSessionID) |
| 275 | attachOrganizationSession(&workspace, sessionID, "") |
| 276 | mirrorOrganizationOrder(&workspace) |
| 277 | workspace.UpdatedAt = time.Now().UTC() |
| 278 | state.Workspaces[workspaceID] = workspace |
| 279 | } |
| 280 | delete(state.PendingCreates, sessionID) |
| 281 | if archiveSessionID != "" { |
| 282 | if _, exists := sessionOwner(*state, archiveSessionID); !exists { |
| 283 | return ErrSessionNotFound |
| 284 | } |
| 285 | setLifecycle(state, archiveSessionID, Archived) |
| 286 | } |
| 287 | return nil |
| 288 | }) |
| 289 | } |
| 290 | |
| 291 | func (s *Store) AbortCreate(ctx context.Context, sessionID string) error { |
| 292 | return s.mutate(ctx, func(state *State) error { |
| 293 | delete(state.PendingCreates, strings.TrimSpace(sessionID)) |
| 294 | return nil |
| 295 | }) |
| 296 | } |
| 297 | |
| 298 | // AbortCreateIfOperation removes only the caller's reservation. A late cleanup |
| 299 | // from an older draft operation must never erase a newer operation's claim. |
| 300 | func (s *Store) AbortCreateIfOperation(ctx context.Context, sessionID, operationID string) error { |
| 301 | sessionID, operationID = strings.TrimSpace(sessionID), strings.TrimSpace(operationID) |
| 302 | return s.mutate(ctx, func(state *State) error { |
| 303 | pending, ok := state.PendingCreates[sessionID] |
| 304 | if ok && pending.OperationID == operationID { |
| 305 | delete(state.PendingCreates, sessionID) |
| 306 | } |
| 307 | return nil |
| 308 | }) |
| 309 | } |
| 310 | |
| 311 | func (s *Store) MoveSession(ctx context.Context, workspaceID, sessionID, beforeSessionID string) error { |
| 312 | return s.moveSession(ctx, workspaceID, sessionID, beforeSessionID, nil) |
| 313 | } |
| 314 | |
| 315 | // MoveSessionIfUnchanged reorders one active session only while the caller's |
| 316 | // resolved lifecycle generation and workspace owner remain current. |
| 317 | func (s *Store) MoveSessionIfUnchanged(ctx context.Context, workspaceID, sessionID, beforeSessionID string, generation uint64) error { |
| 318 | return s.moveSession(ctx, workspaceID, sessionID, beforeSessionID, &generation) |
| 319 | } |
| 320 | |
| 321 | func (s *Store) moveSession(ctx context.Context, workspaceID, sessionID, beforeSessionID string, generation *uint64) error { |
| 322 | return s.mutate(ctx, func(state *State) error { |
| 323 | workspace, ok := state.Workspaces[strings.TrimSpace(workspaceID)] |
| 324 | if !ok { |
| 325 | return ErrWorkspaceNotFound |
| 326 | } |
| 327 | if !contains(workspace.SessionIDs, sessionID) { |
| 328 | return ErrSessionNotFound |
| 329 | } |
| 330 | status := state.SessionStates[sessionID] |
| 331 | if status.Lifecycle != Active { |
| 332 | return ErrSessionNotFound |
| 333 | } |
| 334 | if generation != nil && status.Generation != *generation { |
| 335 | return ErrMutationConflict |
| 336 | } |
| 337 | workspace.SessionIDs = insertBefore(remove(workspace.SessionIDs, sessionID), sessionID, beforeSessionID) |
| 338 | if o := workspace.Organization; o != nil { |
| 339 | key, before := SessionKey(sessionID), "" |
| 340 | if beforeSessionID != "" { |
| 341 | before = SessionKey(beforeSessionID) |
| 342 | } |
| 343 | o.Order = insertBefore(remove(o.Order, key), key, before) |
| 344 | o.ManualOrderEnabled = true |
| 345 | o.Revision++ |
| 346 | mirrorOrganizationOrder(&workspace) |
| 347 | } |
| 348 | workspace.UpdatedAt = time.Now().UTC() |
| 349 | state.Workspaces[workspace.ID] = workspace |
| 350 | status.Generation++ |
| 351 | state.SessionStates[sessionID] = status |
| 352 | return nil |
| 353 | }) |
| 354 | } |
| 355 | |
| 356 | func (s *Store) ArchiveSession(ctx context.Context, sessionID string) error { |
| 357 | return s.SetLifecycle(ctx, []string{sessionID}, Archived) |
| 358 | } |
| 359 | |
| 360 | func (s *Store) RestoreSession(ctx context.Context, sessionID string) error { |
| 361 | return s.SetLifecycle(ctx, []string{sessionID}, Active) |
| 362 | } |
| 363 | |
| 364 | func (s *Store) Contains(ctx context.Context, sessionID string) (bool, error) { |
| 365 | state, err := s.Load(ctx) |
| 366 | if err != nil { |
| 367 | return false, err |
| 368 | } |
| 369 | _, ok := sessionOwner(state, strings.TrimSpace(sessionID)) |
| 370 | return ok, nil |
| 371 | } |
| 372 | |
| 373 | // WithSessionUnchanged serializes a durable metadata commit with lifecycle and |
| 374 | // workspace changes, including writers in other processes. The callback must |
| 375 | // not call the registry; it may only commit session content metadata. |
| 376 | func (s *Store) WithSessionUnchanged(ctx context.Context, id, workspaceID string, generation uint64, commit func() error) error { |
| 377 | s.mu.Lock() |
| 378 | defer s.mu.Unlock() |
| 379 | release, err := filelock.Acquire(ctx, s.path+".lock") |
| 380 | if err != nil { |
| 381 | return err |
| 382 | } |
| 383 | defer release() |
| 384 | state, err := load(s.path) |
| 385 | if err != nil { |
| 386 | return err |
| 387 | } |
| 388 | owner, ok := sessionOwner(state, id) |
| 389 | status := state.SessionStates[id] |
| 390 | if !ok || status.Lifecycle != Active { |
| 391 | return ErrSessionNotFound |
| 392 | } |
| 393 | if owner != workspaceID || status.Generation != generation { |
| 394 | return ErrMutationConflict |
| 395 | } |
| 396 | return commit() |
| 397 | } |
| 398 | |
| 399 | // WithStateLocked holds the registry's process and file locks while commit |
| 400 | // validates a read-only state snapshot and performs a related external write. |
| 401 | // The callback must not call this Store. |
| 402 | func (s *Store) WithStateLocked(ctx context.Context, commit func(State) error) error { |
| 403 | if s == nil || strings.TrimSpace(s.path) == "" || s.path == "." { |
| 404 | return errors.New("workspace state path is required") |
| 405 | } |
| 406 | s.mu.Lock() |
| 407 | defer s.mu.Unlock() |
| 408 | release, err := filelock.Acquire(ctx, s.path+".lock") |
| 409 | if err != nil { |
| 410 | return err |
| 411 | } |
| 412 | defer release() |
| 413 | state, err := load(s.path) |
| 414 | if err != nil { |
| 415 | return err |
| 416 | } |
| 417 | if commit == nil { |
| 418 | return nil |
| 419 | } |
| 420 | return commit(state) |
| 421 | } |
| 422 | |
| 423 | func (s *Store) mutate(ctx context.Context, change func(*State) error) error { |
| 424 | if s == nil || strings.TrimSpace(s.path) == "" || s.path == "." { |
| 425 | return errors.New("workspace state path is required") |
| 426 | } |
| 427 | s.mu.Lock() |
| 428 | defer s.mu.Unlock() |
| 429 | if err := os.MkdirAll(filepath.Dir(s.path), 0o700); err != nil { |
| 430 | return err |
| 431 | } |
| 432 | release, err := filelock.Acquire(ctx, s.path+".lock") |
| 433 | if err != nil { |
| 434 | return err |
| 435 | } |
| 436 | defer release() |
| 437 | upgrading := false |
| 438 | if body, err := os.ReadFile(s.path); err == nil { |
| 439 | var header struct { |
| 440 | Version int `json:"version"` |
| 441 | } |
| 442 | upgrading = json.Unmarshal(body, &header) == nil && header.Version < SchemaVersion |
| 443 | } |
| 444 | if s.beforeUpgrade != nil { |
| 445 | body, readErr := os.ReadFile(s.path) |
| 446 | if readErr != nil && !os.IsNotExist(readErr) { |
| 447 | return readErr |
| 448 | } |
| 449 | var header struct { |
| 450 | Version int `json:"version"` |
| 451 | } |
| 452 | if len(body) > 0 && json.Unmarshal(body, &header) == nil && header.Version == 1 { |
| 453 | if err := s.beforeUpgrade(ctx); err != nil { |
| 454 | return err |
| 455 | } |
| 456 | } |
| 457 | } |
| 458 | if err := backupV1(s.path); err != nil { |
| 459 | return err |
| 460 | } |
| 461 | if err := backupV2(s.path); err != nil { |
| 462 | return err |
| 463 | } |
| 464 | state, err := load(s.path) |
| 465 | if err != nil { |
| 466 | return err |
| 467 | } |
| 468 | before, err := json.Marshal(state) |
| 469 | if err != nil { |
| 470 | return err |
| 471 | } |
| 472 | if err := change(&state); err != nil { |
| 473 | return err |
| 474 | } |
| 475 | after, err := json.Marshal(state) |
| 476 | if err != nil { |
| 477 | return err |
| 478 | } |
| 479 | if bytes.Equal(before, after) && !upgrading { |
| 480 | return nil |
| 481 | } |
| 482 | state.Generation++ |
| 483 | state.Initialized = true |
| 484 | normalize(&state) |
| 485 | if err := validate(state); err != nil { |
| 486 | return err |
| 487 | } |
| 488 | body, err := json.Marshal(state) |
| 489 | if err != nil { |
| 490 | return err |
| 491 | } |
| 492 | return fileutil.AtomicWriteFileStrict(s.path, append(body, '\n'), 0o600) |
| 493 | } |
| 494 | |
| 495 | func load(path string) (State, error) { |
| 496 | body, err := os.ReadFile(path) |
| 497 | if errors.Is(err, os.ErrNotExist) { |
| 498 | return newState(), nil |
| 499 | } |
| 500 | if err != nil { |
| 501 | return State{}, err |
| 502 | } |
| 503 | var state State |
| 504 | if err := json.Unmarshal(body, &state); err != nil { |
| 505 | return State{}, fmt.Errorf("decode workspace state: %w", err) |
| 506 | } |
| 507 | if state.Version != 1 && state.Version != 2 && state.Version != SchemaVersion { |
| 508 | return State{}, fmt.Errorf("%w: %d", ErrUnsupportedVersion, state.Version) |
| 509 | } |
| 510 | if state.Version == 1 { |
| 511 | state.SessionStates = map[string]SessionState{} |
| 512 | for _, id := range state.ArchivedSessionIDs { |
| 513 | state.SessionStates[id] = SessionState{Lifecycle: Archived, Generation: state.Generation} |
| 514 | } |
| 515 | state.Version = SchemaVersion |
| 516 | } else { |
| 517 | if state.WorkspaceIDs == nil || state.Workspaces == nil || state.SessionStates == nil { |
| 518 | return State{}, fmt.Errorf("%w: missing required registry fields", ErrUnsupportedVersion) |
| 519 | } |
| 520 | for _, workspace := range state.Workspaces { |
| 521 | for _, id := range workspace.SessionIDs { |
| 522 | if _, ok := state.SessionStates[id]; !ok { |
| 523 | return State{}, fmt.Errorf("%w: missing session lifecycle", ErrUnsupportedVersion) |
| 524 | } |
| 525 | } |
| 526 | } |
| 527 | } |
| 528 | state.Version = SchemaVersion |
| 529 | normalize(&state) |
| 530 | if err := validate(state); err != nil { |
| 531 | return State{}, err |
| 532 | } |
| 533 | return state, nil |
| 534 | } |
| 535 | |
| 536 | func newState() State { |
| 537 | state := State{Version: SchemaVersion, WorkspaceIDs: []string{}, Workspaces: map[string]Workspace{}, ArchivedSessionIDs: []string{}, PendingCreates: map[string]PendingCreate{}} |
| 538 | normalize(&state) |
| 539 | return state |
| 540 | } |
| 541 | |
| 542 | func normalize(state *State) { |
| 543 | if state.SessionStates == nil { |
| 544 | state.SessionStates = map[string]SessionState{} |
| 545 | } |
| 546 | if state.SourceMappings == nil { |
| 547 | state.SourceMappings = map[string]SourceMapping{} |
| 548 | } |
| 549 | if state.PendingOperations == nil { |
| 550 | state.PendingOperations = map[string]Operation{} |
| 551 | } |
| 552 | if state.RecoveryEntries == nil { |
| 553 | state.RecoveryEntries = map[string]RecoveryEntry{} |
| 554 | } |
| 555 | if state.Presentation == nil { |
| 556 | state.Presentation = map[string]Presentation{} |
| 557 | } |
| 558 | if state.WorkspaceIDs == nil { |
| 559 | state.WorkspaceIDs = []string{} |
| 560 | } |
| 561 | if state.Workspaces == nil { |
| 562 | state.Workspaces = map[string]Workspace{} |
| 563 | } |
| 564 | if state.ArchivedSessionIDs == nil { |
| 565 | state.ArchivedSessionIDs = []string{} |
| 566 | } |
| 567 | if state.PendingCreates == nil { |
| 568 | state.PendingCreates = map[string]PendingCreate{} |
| 569 | } |
| 570 | for id, workspace := range state.Workspaces { |
| 571 | if workspace.SessionIDs == nil { |
| 572 | workspace.SessionIDs = []string{} |
| 573 | } |
| 574 | state.Workspaces[id] = workspace |
| 575 | for _, sessionID := range workspace.SessionIDs { |
| 576 | if _, ok := state.SessionStates[sessionID]; !ok { |
| 577 | state.SessionStates[sessionID] = SessionState{Lifecycle: Active, Generation: state.Generation} |
| 578 | } |
| 579 | } |
| 580 | } |
| 581 | state.ArchivedSessionIDs = []string{} |
| 582 | for id, status := range state.SessionStates { |
| 583 | if status.Lifecycle == Archived { |
| 584 | state.ArchivedSessionIDs = append(state.ArchivedSessionIDs, id) |
| 585 | } |
| 586 | } |
| 587 | slices.Sort(state.ArchivedSessionIDs) |
| 588 | } |
| 589 | |
| 590 | func validate(state State) error { |
| 591 | if err := validateLifecycleState(state); err != nil { |
| 592 | return err |
| 593 | } |
| 594 | seen := map[string]struct{}{} |
| 595 | for _, id := range state.WorkspaceIDs { |
| 596 | if _, duplicate := seen[id]; duplicate { |
| 597 | return fmt.Errorf("workspace state has duplicate workspace %q", id) |
| 598 | } |
| 599 | seen[id] = struct{}{} |
| 600 | workspace, ok := state.Workspaces[id] |
| 601 | if !ok || workspace.ID != id { |
| 602 | return fmt.Errorf("workspace state has invalid workspace %q", id) |
| 603 | } |
| 604 | } |
| 605 | owners := map[string]string{} |
| 606 | for id, workspace := range state.Workspaces { |
| 607 | for _, sessionID := range workspace.SessionIDs { |
| 608 | if owner, duplicate := owners[sessionID]; duplicate { |
| 609 | return fmt.Errorf("session %q belongs to both %q and %q", sessionID, owner, id) |
| 610 | } |
| 611 | owners[sessionID] = id |
| 612 | } |
| 613 | } |
| 614 | return nil |
| 615 | } |
| 616 | |
| 617 | func sessionOwner(state State, sessionID string) (string, bool) { |
| 618 | for id, workspace := range state.Workspaces { |
| 619 | if contains(workspace.SessionIDs, sessionID) { |
| 620 | return id, true |
| 621 | } |
| 622 | } |
| 623 | return "", false |
| 624 | } |
| 625 | |
| 626 | func insertBefore(ids []string, id, before string) []string { |
| 627 | ids = remove(ids, id) |
| 628 | if before != "" { |
| 629 | for i, current := range ids { |
| 630 | if current == before { |
| 631 | return append(append(append([]string{}, ids[:i]...), id), ids[i:]...) |
| 632 | } |
| 633 | } |
| 634 | } |
| 635 | return append(ids, id) |
| 636 | } |
| 637 | |
| 638 | func remove(ids []string, target string) []string { |
| 639 | result := make([]string, 0, len(ids)) |
| 640 | for _, id := range ids { |
| 641 | if id != target { |
| 642 | result = append(result, id) |
| 643 | } |
| 644 | } |
| 645 | return result |
| 646 | } |
| 647 | |
| 648 | func contains(ids []string, target string) bool { |
| 649 | return slices.Contains(ids, target) |
| 650 | } |
| 651 | |
| 652 | func cloneState(state State) (State, error) { |
| 653 | body, err := json.Marshal(state) |
| 654 | if err != nil { |
| 655 | return State{}, err |
| 656 | } |
| 657 | var clone State |
| 658 | if err := json.Unmarshal(body, &clone); err != nil { |
| 659 | return State{}, err |
| 660 | } |
| 661 | normalize(&clone) |
| 662 | return clone, nil |
| 663 | } |
| 664 | |
| 665 | func (s *State) UnmarshalJSON(body []byte) error { |
| 666 | type plain State |
| 667 | var decoded plain |
| 668 | if err := json.Unmarshal(body, &decoded); err != nil { |
| 669 | return err |
| 670 | } |
| 671 | var fields map[string]json.RawMessage |
| 672 | if err := json.Unmarshal(body, &fields); err != nil { |
| 673 | return err |
| 674 | } |
| 675 | for _, key := range []string{"version", "generation", "initialized", "workspaceIds", "workspaces", "archivedSessionIds", "pendingCreates", "sessionStates", "sourceMappings", "pendingOperations", "recoveryEntries", "presentation"} { |
| 676 | delete(fields, key) |
| 677 | } |
| 678 | *s = State(decoded) |
| 679 | s.extra = fields |
| 680 | return nil |
| 681 | } |
| 682 | |
| 683 | func (s State) MarshalJSON() ([]byte, error) { |
| 684 | type plain State |
| 685 | body, err := json.Marshal(plain(s)) |
| 686 | if err != nil { |
| 687 | return nil, err |
| 688 | } |
| 689 | return mergeUnknown(body, s.extra) |
| 690 | } |
| 691 | |
| 692 | func (w *Workspace) UnmarshalJSON(body []byte) error { |
| 693 | type plain Workspace |
| 694 | var decoded plain |
| 695 | if err := json.Unmarshal(body, &decoded); err != nil { |
| 696 | return err |
| 697 | } |
| 698 | var fields map[string]json.RawMessage |
| 699 | if err := json.Unmarshal(body, &fields); err != nil { |
| 700 | return err |
| 701 | } |
| 702 | for _, key := range []string{"id", "root", "title", "sessionIds", "visible", "createdAt", "updatedAt", "organization"} { |
| 703 | delete(fields, key) |
| 704 | } |
| 705 | *w = Workspace(decoded) |
| 706 | w.extra = fields |
| 707 | return nil |
| 708 | } |
| 709 | |
| 710 | func (w Workspace) MarshalJSON() ([]byte, error) { |
| 711 | type plain Workspace |
| 712 | body, err := json.Marshal(plain(w)) |
| 713 | if err != nil { |
| 714 | return nil, err |
| 715 | } |
| 716 | return mergeUnknown(body, w.extra) |
| 717 | } |
| 718 | |
| 719 | func mergeUnknown(known []byte, extra map[string]json.RawMessage) ([]byte, error) { |
| 720 | if len(extra) == 0 { |
| 721 | return known, nil |
| 722 | } |
| 723 | var fields map[string]json.RawMessage |
| 724 | if err := json.Unmarshal(known, &fields); err != nil { |
| 725 | return nil, err |
| 726 | } |
| 727 | for key, value := range extra { |
| 728 | if _, exists := fields[key]; !exists { |
| 729 | fields[key] = bytes.Clone(value) |
| 730 | } |
| 731 | } |
| 732 | return json.Marshal(fields) |
| 733 | } |
| 734 |