| 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "errors" |
| 5 | "fmt" |
| 6 | "sort" |
| 7 | "strings" |
| 8 | |
| 9 | "reasonix/desktop/internal/workspacestate" |
| 10 | "reasonix/internal/agent" |
| 11 | "reasonix/internal/control" |
| 12 | "reasonix/internal/session" |
| 13 | "reasonix/internal/sessioncatalog" |
| 14 | ) |
| 15 | |
| 16 | type SessionOperationMode int |
| 17 | |
| 18 | const ( |
| 19 | OperationPersistent SessionOperationMode = iota |
| 20 | OperationRuntime |
| 21 | ) |
| 22 | |
| 23 | const ( |
| 24 | sessionOperationTargetNotFound = "target_not_found" |
| 25 | sessionOperationNoMessages = "no_messages" |
| 26 | sessionOperationRuntimeNotOpen = "runtime_not_open" |
| 27 | sessionOperationRuntimeNotReady = "runtime_not_ready" |
| 28 | sessionOperationTitleConflict = "title_conflict" |
| 29 | sessionOperationBusy = "operation_busy" |
| 30 | sessionOperationFailed = "operation_failed" |
| 31 | sessionOperationDamaged = "session_damaged" |
| 32 | ) |
| 33 | |
| 34 | // SessionOperationError is stable at the host boundary: the code is intended |
| 35 | // for frontend localization while the message remains safe for older clients. |
| 36 | type SessionOperationError struct { |
| 37 | ReadReason string `json:"readReason,omitempty"` |
| 38 | Code string |
| 39 | Message string |
| 40 | TargetKey string |
| 41 | OperationID string |
| 42 | Retryable bool |
| 43 | } |
| 44 | |
| 45 | func (e *SessionOperationError) Error() string { |
| 46 | if e == nil { |
| 47 | return "" |
| 48 | } |
| 49 | return "session_operation:" + e.Code + ":" + e.Message |
| 50 | } |
| 51 | |
| 52 | func newSessionOperationError(code, message string) error { |
| 53 | retryable := code == sessionOperationRuntimeNotReady || code == sessionOperationTitleConflict || |
| 54 | code == sessionOperationBusy || code == "target_changed" || code == "stale_cursor" |
| 55 | return &SessionOperationError{Code: code, Message: message, Retryable: retryable} |
| 56 | } |
| 57 | |
| 58 | // RPCErrorData exposes product-safe structured details to the generic host |
| 59 | // transport without making hostrpc depend on Desktop application types. |
| 60 | func (e *SessionOperationError) RPCErrorData() map[string]any { |
| 61 | if e == nil { |
| 62 | return nil |
| 63 | } |
| 64 | data := map[string]any{"sessionCode": e.Code, "retryable": e.Retryable} |
| 65 | if e.ReadReason != "" { |
| 66 | data["readReason"] = e.ReadReason |
| 67 | } |
| 68 | if e.TargetKey != "" { |
| 69 | data["targetKey"] = e.TargetKey |
| 70 | } |
| 71 | if e.OperationID != "" { |
| 72 | data["operationId"] = e.OperationID |
| 73 | } |
| 74 | return data |
| 75 | } |
| 76 | |
| 77 | // SessionSelector is the stable target address accepted by session-level |
| 78 | // operations. Ref contains the canonical host-qualified session ID; TopicID is |
| 79 | // only the lowest-priority legacy/topic-only compatibility lookup. |
| 80 | // Higher-priority fields never fall back when invalid. |
| 81 | type SessionSelector struct { |
| 82 | Source *SessionSourceRef `json:"source,omitempty"` |
| 83 | Ref *session.SessionRef `json:"ref,omitempty"` |
| 84 | SessionPath string `json:"sessionPath,omitempty"` |
| 85 | TopicID string `json:"topicId,omitempty"` |
| 86 | } |
| 87 | |
| 88 | type SessionSourceRef struct { |
| 89 | HostID string `json:"hostId"` |
| 90 | SourceKey string `json:"sourceKey,omitempty"` |
| 91 | Path string `json:"path"` |
| 92 | HeadID string `json:"headId,omitempty"` |
| 93 | } |
| 94 | |
| 95 | // SessionTarget resolves durable identity independently from runtime state. |
| 96 | // Controller is optional and is never used to decide whether the session |
| 97 | // exists. |
| 98 | type SessionTarget struct { |
| 99 | Source *SessionSourceRef |
| 100 | TopicID string |
| 101 | SessionRef session.SessionRef |
| 102 | SessionPath string |
| 103 | Scope string |
| 104 | WorkspaceRoot string |
| 105 | IsOpen bool |
| 106 | Ready bool |
| 107 | TabID string |
| 108 | Controller *control.Controller |
| 109 | WorkspaceID string |
| 110 | LifecycleGeneration uint64 |
| 111 | Lifecycle string |
| 112 | SharedTopic bool |
| 113 | } |
| 114 | |
| 115 | type sessionTargetSelector = SessionSelector |
| 116 | |
| 117 | func (target SessionTarget) key() string { |
| 118 | if strings.TrimSpace(target.SessionRef.SessionID) != "" { |
| 119 | return "ref:" + target.SessionRef.HostID + ":" + target.SessionRef.SessionID |
| 120 | } |
| 121 | if target.Source != nil { |
| 122 | return "source:" + target.Source.HostID + ":" + target.Source.SourceKey |
| 123 | } |
| 124 | if path := strings.TrimSpace(target.SessionPath); path != "" { |
| 125 | return "path:" + sessionRuntimeKey(path) |
| 126 | } |
| 127 | return "topic:" + strings.TrimSpace(target.TopicID) |
| 128 | } |
| 129 | |
| 130 | func (target SessionTarget) RequireRuntime() (*control.Controller, error) { |
| 131 | if !target.IsOpen || target.Controller == nil { |
| 132 | return nil, newSessionOperationError(sessionOperationRuntimeNotOpen, "Open this session before using this action.") |
| 133 | } |
| 134 | if !target.Ready { |
| 135 | return nil, newSessionOperationError(sessionOperationRuntimeNotReady, "This session is still loading. Try again shortly.") |
| 136 | } |
| 137 | return target.Controller, nil |
| 138 | } |
| 139 | |
| 140 | func (a *App) resolveSessionTarget(selector sessionTargetSelector) (SessionTarget, error) { |
| 141 | return a.resolveSessionTargetWithArchived(selector, false) |
| 142 | } |
| 143 | |
| 144 | func (a *App) resolveSessionTargetWithArchived(selector sessionTargetSelector, allowArchived bool) (SessionTarget, error) { |
| 145 | if selector.Ref != nil { |
| 146 | if strings.TrimSpace(selector.Ref.SessionID) == "" { |
| 147 | return SessionTarget{}, newSessionOperationError(sessionOperationTargetNotFound, "The session no longer exists.") |
| 148 | } |
| 149 | if hostID := strings.TrimSpace(selector.Ref.HostID); hostID != "" && hostID != localDesktopHostID { |
| 150 | return SessionTarget{}, newSessionOperationError("unsupported", "This remote session operation is not available from the local session service.") |
| 151 | } |
| 152 | return a.resolveCanonicalSessionTargetState(*selector.Ref, strings.TrimSpace(selector.TopicID), allowArchived) |
| 153 | } |
| 154 | if selector.Source != nil { |
| 155 | return a.resolveSourceSessionTarget(selector, allowArchived) |
| 156 | } |
| 157 | if path := strings.TrimSpace(selector.SessionPath); path != "" { |
| 158 | if source, err := parseSessionSourceRoute(path); err != nil { |
| 159 | return SessionTarget{}, err |
| 160 | } else if source != nil { |
| 161 | return a.resolveSessionTargetWithArchived(SessionSelector{Source: source, TopicID: selector.TopicID}, allowArchived) |
| 162 | } |
| 163 | if ref, ok := sessionRefForRoute(a.desktopSessionService(""), path); ok { |
| 164 | return a.resolveCanonicalSessionTargetState(ref, strings.TrimSpace(selector.TopicID), allowArchived) |
| 165 | } |
| 166 | return a.resolveLegacySessionTarget(path, strings.TrimSpace(selector.TopicID), allowArchived) |
| 167 | } |
| 168 | topicID := strings.TrimSpace(selector.TopicID) |
| 169 | if topicID == "" { |
| 170 | return SessionTarget{}, newSessionOperationError(sessionOperationTargetNotFound, "The session no longer exists.") |
| 171 | } |
| 172 | ref, canonical, err := a.canonicalSessionRefForTopic(topicID) |
| 173 | if err != nil { |
| 174 | return SessionTarget{}, err |
| 175 | } |
| 176 | scope, root, ok := a.findTopicLocation(topicID) |
| 177 | legacyPaths := a.legacySessionPathsForTopic(scope, root, topicID) |
| 178 | if canonical { |
| 179 | if len(legacyPaths) != 0 { |
| 180 | return SessionTarget{}, newSessionOperationError("ambiguous_target", "Select a specific session before using this action.") |
| 181 | } |
| 182 | return a.resolveCanonicalSessionTargetState(ref, topicID, allowArchived) |
| 183 | } |
| 184 | if len(legacyPaths) > 1 { |
| 185 | return SessionTarget{}, newSessionOperationError("ambiguous_target", "Select a specific session before using this action.") |
| 186 | } |
| 187 | if len(legacyPaths) == 1 { |
| 188 | if rows := expandSessionSourceRows(ProjectNode{SessionPath: legacyPaths[0]}); len(rows) > 1 { |
| 189 | return SessionTarget{}, newSessionOperationError("ambiguous_target", "Select a specific historical head before using this action.") |
| 190 | } |
| 191 | target, resolveErr := a.resolveLegacySessionTarget(legacyPaths[0], topicID, allowArchived) |
| 192 | if resolveErr == nil { |
| 193 | target.Scope, target.WorkspaceRoot = scope, root |
| 194 | } |
| 195 | return target, resolveErr |
| 196 | } |
| 197 | if runtime := a.runtimeSessionTarget(topicID, session.SessionRef{}, ""); runtime.Controller != nil { |
| 198 | if runtimeRef, bound := runtime.Controller.SessionRef(); bound { |
| 199 | target, resolveErr := a.resolveCanonicalSessionTargetState(runtimeRef, topicID, allowArchived) |
| 200 | if resolveErr == nil { |
| 201 | return target, nil |
| 202 | } |
| 203 | } |
| 204 | } |
| 205 | if !ok { |
| 206 | return SessionTarget{}, newSessionOperationError(sessionOperationTargetNotFound, "The session no longer exists.") |
| 207 | } |
| 208 | if runtime := a.runtimeSessionTarget(topicID, session.SessionRef{}, ""); runtime.IsOpen { |
| 209 | runtime.Scope, runtime.WorkspaceRoot = scope, root |
| 210 | return runtime, nil |
| 211 | } |
| 212 | // A newly created topic can exist before its first user turn has allocated |
| 213 | // physical session storage. It is a valid empty target, not a missing one. |
| 214 | return SessionTarget{TopicID: topicID, Scope: scope, WorkspaceRoot: root}, nil |
| 215 | } |
| 216 | |
| 217 | func (a *App) legacySessionPathsForTopic(scope, workspaceRoot, topicID string) []string { |
| 218 | topicID = strings.TrimSpace(topicID) |
| 219 | if topicID == "" { |
| 220 | return nil |
| 221 | } |
| 222 | mapped := map[string]bool{} |
| 223 | if state, err := a.workspaceRegistry().Load(a.bootContext()); err == nil { |
| 224 | for _, mapping := range state.SourceMappings { |
| 225 | if path := strings.TrimSpace(mapping.Path); path != "" { |
| 226 | mapped[sessionRuntimeKey(path)] = true |
| 227 | } |
| 228 | } |
| 229 | } |
| 230 | paths := map[string]string{} |
| 231 | add := func(path string) { |
| 232 | path = strings.TrimSpace(path) |
| 233 | if path == "" { |
| 234 | return |
| 235 | } |
| 236 | if _, canonical := parseSessionRoute(path); canonical { |
| 237 | return |
| 238 | } |
| 239 | key := sessionRuntimeKey(path) |
| 240 | if key == "" || mapped[key] || agent.IsCleanupPending(path) { |
| 241 | return |
| 242 | } |
| 243 | paths[key] = path |
| 244 | } |
| 245 | if scope != "" { |
| 246 | if catalog := a.sessionCatalog.Load(); catalog != nil { |
| 247 | topic, found, err := catalog.GetTopic(a.bootContext(), sessioncatalog.TopicKey{ |
| 248 | Scope: scope, WorkspaceRoot: workspaceRoot, TopicID: topicID, |
| 249 | }) |
| 250 | if err == nil && found { |
| 251 | for _, record := range topic.Sessions { |
| 252 | add(record.Path) |
| 253 | } |
| 254 | } |
| 255 | } |
| 256 | } |
| 257 | for _, dir := range a.knownSessionDirs() { |
| 258 | for _, match := range topicSessionMatches(dir, topicID) { |
| 259 | add(match.path) |
| 260 | } |
| 261 | } |
| 262 | out := make([]string, 0, len(paths)) |
| 263 | for _, path := range paths { |
| 264 | out = append(out, path) |
| 265 | } |
| 266 | sort.Strings(out) |
| 267 | return out |
| 268 | } |
| 269 | |
| 270 | func (a *App) canonicalSessionRefForTopic(topicID string) (session.SessionRef, bool, error) { |
| 271 | state, err := a.workspaceRegistry().Load(a.bootContext()) |
| 272 | if err != nil { |
| 273 | return session.SessionRef{}, false, err |
| 274 | } |
| 275 | var found session.SessionRef |
| 276 | for _, workspace := range state.Workspaces { |
| 277 | for _, id := range workspace.SessionIDs { |
| 278 | presentation := state.Presentation[id] |
| 279 | if presentation.TopicID == topicID || "canonical-"+id == topicID || id == topicID || sessionRoute(id) == topicID { |
| 280 | if found.SessionID != "" && found.SessionID != id { |
| 281 | return session.SessionRef{}, false, newSessionOperationError("ambiguous_target", "Select a specific session before renaming it.") |
| 282 | } |
| 283 | found = session.SessionRef{HostID: localDesktopHostID, SessionID: id} |
| 284 | } |
| 285 | } |
| 286 | } |
| 287 | return found, found.SessionID != "", nil |
| 288 | } |
| 289 | |
| 290 | func (a *App) resolveCanonicalSessionTarget(ref session.SessionRef, topicID string) (SessionTarget, error) { |
| 291 | return a.resolveCanonicalSessionTargetState(ref, topicID, false) |
| 292 | } |
| 293 | |
| 294 | func (a *App) resolveCanonicalSessionTargetState(ref session.SessionRef, topicID string, allowArchived bool) (SessionTarget, error) { |
| 295 | if err := validateLocalSessionRef(ref); err != nil { |
| 296 | return SessionTarget{}, newSessionOperationError(sessionOperationTargetNotFound, "The session no longer exists.") |
| 297 | } |
| 298 | if _, err := a.desktopSessionService("").Query().Stat(a.bootContext(), ref); err != nil { |
| 299 | return SessionTarget{}, newSessionOperationError(sessionOperationTargetNotFound, "The session no longer exists.") |
| 300 | } |
| 301 | target := a.runtimeSessionTarget(topicID, ref, sessionRoute(ref.SessionID)) |
| 302 | target.SessionRef = ref |
| 303 | target.SessionPath = sessionRoute(ref.SessionID) |
| 304 | if target.TopicID == "" { |
| 305 | target.TopicID = topicID |
| 306 | } |
| 307 | snapshot, loadErr := a.workspaceRegistry().VerifySnapshot(a.bootContext()) |
| 308 | if loadErr != nil { |
| 309 | return SessionTarget{}, loadErr |
| 310 | } |
| 311 | metadata := snapshot.Session(ref.SessionID) |
| 312 | status := metadata.State |
| 313 | if !metadata.Registered || status.Lifecycle == workspacestate.Deleted { |
| 314 | return SessionTarget{}, newSessionOperationError(sessionOperationTargetNotFound, "The session no longer exists.") |
| 315 | } |
| 316 | if status.Lifecycle != workspacestate.Active && !allowArchived { |
| 317 | return SessionTarget{}, newSessionOperationError("archived", "Restore this session before renaming it.") |
| 318 | } |
| 319 | target.LifecycleGeneration = status.Generation |
| 320 | target.Lifecycle = status.Lifecycle |
| 321 | // Presentation belongs to this exact session, never a caller's stale topic. |
| 322 | target.TopicID, target.SharedTopic = metadata.Presentation.TopicID, metadata.SharedTopic |
| 323 | if metadata.OwnershipConflict { |
| 324 | return SessionTarget{}, errSessionWorkspaceConflict |
| 325 | } |
| 326 | if workspace := metadata.Workspace; workspace.ID != "" { |
| 327 | target.WorkspaceRoot, target.WorkspaceID = workspace.Root, workspace.ID |
| 328 | target.Scope = canonicalWorkspaceScope(workspace) |
| 329 | if target.Scope == "global" { |
| 330 | target.WorkspaceRoot = "" |
| 331 | } |
| 332 | } |
| 333 | if target.TopicID == "" { |
| 334 | target.TopicID = "canonical-" + ref.SessionID |
| 335 | } |
| 336 | return target, nil |
| 337 | } |
| 338 | |
| 339 | func (a *App) resolveLegacySessionTarget(path, topicID string, allowArchived bool) (SessionTarget, error) { |
| 340 | dir, validated, err := a.sessionDirForPath(path) |
| 341 | if err != nil { |
| 342 | return SessionTarget{}, newSessionOperationError(sessionOperationTargetNotFound, "The session no longer exists.") |
| 343 | } |
| 344 | if _, _, err := validateSessionPath(dir, validated); err != nil { |
| 345 | return SessionTarget{}, newSessionOperationError(sessionOperationTargetNotFound, "The session no longer exists.") |
| 346 | } |
| 347 | if ref, adopted, adoptionErr := a.legacyCanonicalRef(a.bootContext(), validated); adoptionErr != nil { |
| 348 | return SessionTarget{}, newSessionOperationError("target_changed", "The session location or identity changed. Reload it and try again.") |
| 349 | } else if adopted { |
| 350 | return a.resolveCanonicalSessionTargetState(ref, topicID, allowArchived) |
| 351 | } |
| 352 | target := a.runtimeSessionTarget(topicID, session.SessionRef{}, validated) |
| 353 | target.SessionPath = validated |
| 354 | target.TopicID = topicID |
| 355 | if meta, ok, err := agent.LoadBranchMeta(validated); err == nil && ok { |
| 356 | target.TopicID, target.Scope, target.WorkspaceRoot = meta.TopicID, meta.Scope, meta.WorkspaceRoot |
| 357 | } |
| 358 | return target, nil |
| 359 | } |
| 360 | |
| 361 | func (a *App) runtimeSessionTarget(topicID string, ref session.SessionRef, path string) SessionTarget { |
| 362 | a.mu.RLock() |
| 363 | defer a.mu.RUnlock() |
| 364 | for _, tab := range a.runtimeTabsLocked() { |
| 365 | if tab == nil { |
| 366 | continue |
| 367 | } |
| 368 | ctrl, _ := tab.Ctrl.(*control.Controller) |
| 369 | matches := false |
| 370 | switch { |
| 371 | case ref.SessionID != "": |
| 372 | if ctrl != nil { |
| 373 | bound, ok := ctrl.SessionRef() |
| 374 | matches = ok && bound == ref |
| 375 | } |
| 376 | case path != "": |
| 377 | matches = sessionRuntimeKey(tab.currentSessionPath()) == sessionRuntimeKey(path) |
| 378 | default: |
| 379 | matches = topicID != "" && (tab.TopicID == topicID || tab.SessionID == topicID || sessionRoute(tab.SessionID) == topicID) |
| 380 | } |
| 381 | if !matches { |
| 382 | continue |
| 383 | } |
| 384 | resolvedPath := path |
| 385 | if resolvedPath == "" { |
| 386 | resolvedPath = tab.currentSessionPath() |
| 387 | } |
| 388 | resolvedRef := ref |
| 389 | if resolvedRef.SessionID == "" && ctrl != nil { |
| 390 | if bound, ok := ctrl.SessionRef(); ok { |
| 391 | resolvedRef = bound |
| 392 | } |
| 393 | } |
| 394 | return SessionTarget{ |
| 395 | TopicID: topicID, SessionRef: resolvedRef, SessionPath: resolvedPath, |
| 396 | Scope: tab.Scope, WorkspaceRoot: tab.WorkspaceRoot, |
| 397 | IsOpen: true, Ready: tab.Ready, TabID: tab.ID, Controller: ctrl, |
| 398 | } |
| 399 | } |
| 400 | return SessionTarget{TopicID: topicID, SessionRef: ref, SessionPath: path} |
| 401 | } |
| 402 | |
| 403 | // sessionTargetRuntimeRebound detects reuse of the same controller for another |
| 404 | // durable identity. Merely switching or closing the tab is not a conflict for |
| 405 | // a persistent operation; storage CAS remains authoritative in that case. |
| 406 | func (a *App) sessionTargetRuntimeRebound(target SessionTarget) bool { |
| 407 | if !target.IsOpen || target.Controller == nil || target.TabID == "" { |
| 408 | return false |
| 409 | } |
| 410 | a.mu.RLock() |
| 411 | defer a.mu.RUnlock() |
| 412 | tab := a.tabs[target.TabID] |
| 413 | if tab == nil || tab.Ctrl != target.Controller { |
| 414 | return false |
| 415 | } |
| 416 | if target.SessionRef.SessionID != "" { |
| 417 | ref, ok := target.Controller.SessionRef() |
| 418 | return !ok || ref != target.SessionRef |
| 419 | } |
| 420 | return sessionRuntimeKey(tab.currentSessionPath()) != sessionRuntimeKey(target.SessionPath) |
| 421 | } |
| 422 | |
| 423 | func sessionOperationConflict(err error) error { |
| 424 | if errors.Is(err, workspacestate.ErrSessionNotFound) { |
| 425 | return newSessionOperationError(sessionOperationTargetNotFound, "The session no longer exists or has been archived.") |
| 426 | } |
| 427 | if errors.Is(err, workspacestate.ErrMutationConflict) { |
| 428 | return newSessionOperationError(sessionOperationTitleConflict, "The session changed while AI rename was running. Try again.") |
| 429 | } |
| 430 | if errors.Is(err, session.ErrSessionTitleChanged) { |
| 431 | return newSessionOperationError(sessionOperationTitleConflict, "The session title changed while AI rename was running. Try again.") |
| 432 | } |
| 433 | return fmt.Errorf("AI rename session: %w", err) |
| 434 | } |
| 435 |