| 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "errors" |
| 6 | "os" |
| 7 | "slices" |
| 8 | "sort" |
| 9 | "strings" |
| 10 | |
| 11 | "reasonix/desktop/internal/workspacestate" |
| 12 | "reasonix/internal/session" |
| 13 | ) |
| 14 | |
| 15 | // SessionPreparationView is the revisioned snapshot shared by navigation and |
| 16 | // storage management. Scheduling state intentionally stays outside the durable |
| 17 | // import lifecycle ledger. |
| 18 | type SessionPreparationView struct { |
| 19 | OperationID string `json:"operationId"` |
| 20 | SourceKey string `json:"sourceKey"` |
| 21 | Status string `json:"status"` |
| 22 | Revision uint64 `json:"revision"` |
| 23 | Target *session.SessionRef `json:"target,omitempty"` |
| 24 | ErrorCode string `json:"errorCode,omitempty"` |
| 25 | ErrorDetail string `json:"errorDetail,omitempty"` |
| 26 | Retryable bool `json:"retryable"` |
| 27 | } |
| 28 | |
| 29 | type HistoricalSourceUpdateView struct { |
| 30 | SourceKey string `json:"sourceKey"` |
| 31 | Status string `json:"status"` |
| 32 | Version string `json:"version,omitempty"` |
| 33 | Target *session.SessionRef `json:"target,omitempty"` |
| 34 | Source *SessionSourceRef `json:"source,omitempty"` |
| 35 | ErrorCode string `json:"errorCode,omitempty"` |
| 36 | Retryable bool `json:"retryable"` |
| 37 | } |
| 38 | |
| 39 | type historicalSourceUpdateCall struct { |
| 40 | view HistoricalSourceUpdateView |
| 41 | done chan struct{} |
| 42 | delivered bool |
| 43 | } |
| 44 | |
| 45 | func preparationSnapshot(call *historicalImportCall) SessionPreparationView { |
| 46 | view := SessionPreparationView{OperationID: call.operationID, SourceKey: call.sourceKey, Status: call.status, |
| 47 | Revision: call.revision, ErrorCode: call.errorCode, ErrorDetail: call.errorDetail, |
| 48 | Retryable: call.status == "blocked" || call.status == "failed" || call.status == "cancelled"} |
| 49 | if call.status == "ready" { |
| 50 | ref := call.result.Session |
| 51 | view.Target = &ref |
| 52 | } |
| 53 | return view |
| 54 | } |
| 55 | |
| 56 | func (a *App) historicalSourceForSelector(selector SessionSelector) (string, historicalSource, error) { |
| 57 | if selector.Source != nil { |
| 58 | ref := selector.Source |
| 59 | if strings.TrimSpace(ref.Path) == "" { |
| 60 | return "", historicalSource{}, newSessionOperationError(sessionOperationTargetNotFound, "The source no longer exists.") |
| 61 | } |
| 62 | id := desktopSourceKey(ref.Path, ref.HeadID) |
| 63 | state, loadErr := a.workspaceRegistry().Load(a.bootContext()) |
| 64 | if loadErr != nil { |
| 65 | return "", historicalSource{}, loadErr |
| 66 | } |
| 67 | if ref.SourceKey != "" && !slices.Contains(state.SourceKeys(ref.SourceKey), id) { |
| 68 | return "", historicalSource{}, newSessionOperationError("target_changed", "The source identity changed.") |
| 69 | } |
| 70 | mapping, adopted, resolveErr := state.ResolveSource(id) |
| 71 | if resolveErr != nil { |
| 72 | return "", historicalSource{}, resolveErr |
| 73 | } |
| 74 | format, scope, root := "legacy", "global", "" |
| 75 | if info, statErr := os.Stat(ref.Path); statErr == nil && info.IsDir() { |
| 76 | format = "canonical" |
| 77 | } |
| 78 | if adopted { |
| 79 | id = mapping.SourceKey |
| 80 | workspace := state.Workspaces[mapping.WorkspaceID] |
| 81 | root = workspace.Root |
| 82 | if mapping.WorkspaceID != "global" { |
| 83 | scope = "project" |
| 84 | } |
| 85 | } |
| 86 | if root == "" { |
| 87 | for _, project := range loadProjectsFile().Projects { |
| 88 | if strings.HasPrefix(cleanDesktopPath(ref.Path), cleanDesktopPath(desktopSessionDir(project.Root))) { |
| 89 | scope, root = "project", project.Root |
| 90 | break |
| 91 | } |
| 92 | } |
| 93 | } |
| 94 | return id, historicalSource{path: ref.Path, head: ref.HeadID, format: format, scope: scope, root: root}, nil |
| 95 | } |
| 96 | target, err := a.resolveSessionTarget(selector) |
| 97 | if err != nil { |
| 98 | return "", historicalSource{}, err |
| 99 | } |
| 100 | if target.Source == nil { |
| 101 | state, loadErr := a.workspaceRegistry().Load(a.bootContext()) |
| 102 | if loadErr != nil { |
| 103 | return "", historicalSource{}, loadErr |
| 104 | } |
| 105 | keys := make([]string, 0) |
| 106 | for key, mapping := range state.SourceMappings { |
| 107 | if mapping.SessionID == target.SessionRef.SessionID && !strings.Contains(key, ":review:") { |
| 108 | keys = append(keys, key) |
| 109 | } |
| 110 | } |
| 111 | sort.Strings(keys) |
| 112 | if len(keys) == 0 { |
| 113 | return "", historicalSource{}, newSessionOperationError("unsupported", "This session has no historical source.") |
| 114 | } |
| 115 | mapping := state.SourceMappings[keys[0]] |
| 116 | workspace := state.Workspaces[mapping.WorkspaceID] |
| 117 | scope := "project" |
| 118 | if mapping.WorkspaceID == "global" { |
| 119 | scope = "global" |
| 120 | } |
| 121 | return keys[0], historicalSource{path: mapping.Path, head: mapping.HeadID, format: mapping.Format, |
| 122 | scope: scope, root: workspace.Root}, nil |
| 123 | } |
| 124 | id := strings.TrimSpace(target.Source.SourceKey) |
| 125 | if id == "" { |
| 126 | id = desktopSourceKey(target.Source.Path, target.Source.HeadID) |
| 127 | } |
| 128 | format := "legacy" |
| 129 | if info, statErr := os.Stat(target.Source.Path); statErr == nil && info.IsDir() { |
| 130 | format = "canonical" |
| 131 | } |
| 132 | return id, historicalSource{path: target.Source.Path, head: target.Source.HeadID, format: format, |
| 133 | scope: target.Scope, root: target.WorkspaceRoot}, nil |
| 134 | } |
| 135 | |
| 136 | // PrepareSession starts or joins preparation and returns immediately. Canonical |
| 137 | // sessions are already ready and never enter the historical queue. |
| 138 | func (a *App) PrepareSession(selector SessionSelector) (SessionPreparationView, error) { |
| 139 | if selector.Ref != nil { |
| 140 | target, err := a.resolveSessionTarget(selector) |
| 141 | if err != nil { |
| 142 | return SessionPreparationView{}, err |
| 143 | } |
| 144 | ref := target.SessionRef |
| 145 | return SessionPreparationView{OperationID: "ready-" + ref.SessionID, Status: "ready", Revision: target.LifecycleGeneration, Target: &ref}, nil |
| 146 | } |
| 147 | id, source, err := a.historicalSourceForSelector(selector) |
| 148 | if err != nil { |
| 149 | return SessionPreparationView{}, err |
| 150 | } |
| 151 | _, listErr := a.ListHistoricalSessions() |
| 152 | c := &a.historicalImports |
| 153 | c.mu.Lock() |
| 154 | c.initialize(a.bootContext()) |
| 155 | if _, exists := c.sources[id]; !exists { |
| 156 | c.sources[id] = source |
| 157 | c.views[id] = historicalImportViewFromSource(id, source) |
| 158 | } |
| 159 | c.mu.Unlock() |
| 160 | if listErr != nil && source.path == "" { |
| 161 | return SessionPreparationView{}, listErr |
| 162 | } |
| 163 | call, err := a.prepareHistoricalSession(id, true, false) |
| 164 | if err != nil { |
| 165 | return SessionPreparationView{}, err |
| 166 | } |
| 167 | c.mu.Lock() |
| 168 | view := preparationSnapshot(call) |
| 169 | c.mu.Unlock() |
| 170 | return view, nil |
| 171 | } |
| 172 | |
| 173 | func historicalImportViewFromSource(id string, source historicalSource) HistoricalSessionView { |
| 174 | return HistoricalSessionView{ID: id, Title: filepathBaseOrFallback(source.path), Format: source.format, Status: "available", |
| 175 | Source: &SessionSourceRef{HostID: localDesktopHostID, SourceKey: desktopSourceKey(source.path, source.head), Path: source.path, HeadID: source.head}} |
| 176 | } |
| 177 | |
| 178 | func filepathBaseOrFallback(path string) string { |
| 179 | path = strings.TrimSpace(path) |
| 180 | if path == "" { |
| 181 | return "Historical session" |
| 182 | } |
| 183 | parts := strings.FieldsFunc(path, func(r rune) bool { return r == '/' || r == '\\' }) |
| 184 | return parts[len(parts)-1] |
| 185 | } |
| 186 | |
| 187 | func (a *App) GetSessionPreparation(operationID string) (SessionPreparationView, error) { |
| 188 | c := &a.historicalImports |
| 189 | c.mu.Lock() |
| 190 | defer c.mu.Unlock() |
| 191 | c.initialize(a.bootContext()) |
| 192 | call := c.operations[strings.TrimSpace(operationID)] |
| 193 | if call == nil { |
| 194 | return SessionPreparationView{}, newSessionOperationError(sessionOperationTargetNotFound, "The preparation task no longer exists.") |
| 195 | } |
| 196 | return preparationSnapshot(call), nil |
| 197 | } |
| 198 | |
| 199 | func (a *App) CancelSessionPreparation(operationID string) (SessionPreparationView, error) { |
| 200 | c := &a.historicalImports |
| 201 | c.mu.Lock() |
| 202 | defer c.mu.Unlock() |
| 203 | call := c.operations[strings.TrimSpace(operationID)] |
| 204 | if call == nil { |
| 205 | return SessionPreparationView{}, newSessionOperationError(sessionOperationTargetNotFound, "The preparation task no longer exists.") |
| 206 | } |
| 207 | if call.status == "ready" { |
| 208 | return preparationSnapshot(call), nil |
| 209 | } |
| 210 | call.interactive = false |
| 211 | if !call.batch && (call.status == "queued" || call.status == "preparing") { |
| 212 | call.cancel() |
| 213 | } |
| 214 | return preparationSnapshot(call), nil |
| 215 | } |
| 216 | |
| 217 | // CheckHistoricalSourceUpdate obtains the same non-blocking ownership used by |
| 218 | // conversion. Metadata changes alone are ignored because the durable-content |
| 219 | // fingerprint excludes branch presentation sidecars. |
| 220 | func (a *App) CheckHistoricalSourceUpdate(selector SessionSelector) (HistoricalSourceUpdateView, error) { |
| 221 | id, source, err := a.historicalSourceForSelector(selector) |
| 222 | if err != nil { |
| 223 | return HistoricalSourceUpdateView{}, err |
| 224 | } |
| 225 | c := &a.historicalImports |
| 226 | c.mu.Lock() |
| 227 | c.initialize(a.bootContext()) |
| 228 | if call := c.updates[id]; call != nil { |
| 229 | if call.view.Status != "checking" && call.delivered { |
| 230 | delete(c.updates, id) |
| 231 | } else { |
| 232 | if call.view.Status != "checking" { |
| 233 | call.delivered = true |
| 234 | } |
| 235 | view := call.view |
| 236 | c.mu.Unlock() |
| 237 | return view, nil |
| 238 | } |
| 239 | } |
| 240 | call := &historicalSourceUpdateCall{view: HistoricalSourceUpdateView{SourceKey: id, Status: "checking"}, done: make(chan struct{})} |
| 241 | c.updates[id] = call |
| 242 | c.workers.Add(1) |
| 243 | ctx := c.ctx |
| 244 | initial := call.view |
| 245 | c.mu.Unlock() |
| 246 | go func() { |
| 247 | defer c.workers.Done() |
| 248 | var view HistoricalSourceUpdateView |
| 249 | select { |
| 250 | case c.updateWorker <- struct{}{}: |
| 251 | defer func() { <-c.updateWorker }() |
| 252 | view = a.checkHistoricalSourceUpdate(ctx, id, source) |
| 253 | case <-ctx.Done(): |
| 254 | view = HistoricalSourceUpdateView{SourceKey: id, Status: "cancelled", Retryable: true} |
| 255 | } |
| 256 | c.mu.Lock() |
| 257 | call.view = view |
| 258 | close(call.done) |
| 259 | c.mu.Unlock() |
| 260 | }() |
| 261 | return initial, nil |
| 262 | } |
| 263 | |
| 264 | func (a *App) checkHistoricalSourceUpdate(ctx context.Context, id string, source historicalSource) HistoricalSourceUpdateView { |
| 265 | state, err := a.workspaceRegistry().Load(ctx) |
| 266 | if err != nil { |
| 267 | return HistoricalSourceUpdateView{SourceKey: id, Status: "failed", ErrorCode: "registry_unavailable", Retryable: true} |
| 268 | } |
| 269 | mapping, ok, resolveErr := state.ResolveSource(id) |
| 270 | if resolveErr != nil { |
| 271 | return HistoricalSourceUpdateView{SourceKey: id, Status: "failed", ErrorCode: "target_changed"} |
| 272 | } |
| 273 | if !ok { |
| 274 | return HistoricalSourceUpdateView{SourceKey: id, Status: "not_prepared", Retryable: true} |
| 275 | } |
| 276 | release, err := acquireHistoricalSource(ctx, id, source) |
| 277 | if err != nil { |
| 278 | if historicalSourceBusyError(err) { |
| 279 | return HistoricalSourceUpdateView{SourceKey: id, Status: "blocked", ErrorCode: "source_busy", Retryable: true} |
| 280 | } |
| 281 | return HistoricalSourceUpdateView{SourceKey: id, Status: "failed", ErrorCode: "check_failed", Retryable: true} |
| 282 | } |
| 283 | defer release() |
| 284 | fingerprint, err := desktopSourceFingerprint(source.path) |
| 285 | if err != nil { |
| 286 | return HistoricalSourceUpdateView{SourceKey: id, Status: "failed", ErrorCode: "source_unavailable", Retryable: true} |
| 287 | } |
| 288 | ref := session.SessionRef{HostID: localDesktopHostID, SessionID: mapping.SessionID} |
| 289 | status := "unchanged" |
| 290 | if state.SessionStates[mapping.SessionID].Lifecycle != workspacestate.Active { |
| 291 | status = "retired" |
| 292 | } |
| 293 | if fingerprint != mapping.Fingerprint { |
| 294 | status = "available" |
| 295 | } |
| 296 | sourceRef := SessionSourceRef{HostID: localDesktopHostID, SourceKey: desktopSourceKey(source.path, source.head), Path: source.path, HeadID: source.head} |
| 297 | return HistoricalSourceUpdateView{SourceKey: id, Status: status, Version: fingerprint, Target: &ref, Source: &sourceRef} |
| 298 | } |
| 299 | |
| 300 | func (a *App) PrepareHistoricalSourceVersion(sourceRef SessionSourceRef, version string) (SessionPreparationView, error) { |
| 301 | version = strings.TrimSpace(version) |
| 302 | if version == "" { |
| 303 | return SessionPreparationView{}, errors.New("historical source version is required") |
| 304 | } |
| 305 | id, source, err := a.historicalSourceForSelector(SessionSelector{Source: &sourceRef}) |
| 306 | if err != nil { |
| 307 | return SessionPreparationView{}, err |
| 308 | } |
| 309 | release, err := acquireHistoricalSource(a.bootContext(), id, source) |
| 310 | if err != nil { |
| 311 | return SessionPreparationView{}, err |
| 312 | } |
| 313 | current, fingerprintErr := desktopSourceFingerprint(source.path) |
| 314 | release() |
| 315 | if fingerprintErr != nil { |
| 316 | return SessionPreparationView{}, fingerprintErr |
| 317 | } |
| 318 | if current != version { |
| 319 | return SessionPreparationView{}, newSessionOperationError("target_changed", "The historical source changed. Check for updates again.") |
| 320 | } |
| 321 | versionID := id + ":review:" + version |
| 322 | source.version = version |
| 323 | c := &a.historicalImports |
| 324 | c.mu.Lock() |
| 325 | c.initialize(a.bootContext()) |
| 326 | c.sources[versionID] = source |
| 327 | c.views[versionID] = historicalImportViewFromSource(versionID, source) |
| 328 | c.mu.Unlock() |
| 329 | call, err := a.prepareHistoricalSession(versionID, true, false) |
| 330 | if err != nil { |
| 331 | return SessionPreparationView{}, err |
| 332 | } |
| 333 | c.mu.Lock() |
| 334 | view := preparationSnapshot(call) |
| 335 | c.mu.Unlock() |
| 336 | return view, nil |
| 337 | } |
| 338 |