| 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "encoding/hex" |
| 5 | "strings" |
| 6 | |
| 7 | "reasonix/desktop/internal/workspacestate" |
| 8 | ) |
| 9 | |
| 10 | func (a *App) validatePlaceholderTopicOpen(topicID, sessionPath string) error { |
| 11 | if strings.TrimSpace(sessionPath) != "" || strings.TrimSpace(topicID) == "" { |
| 12 | return nil |
| 13 | } |
| 14 | state, err := a.workspaceRegistry().Load(a.bootContext()) |
| 15 | if err != nil { |
| 16 | return err |
| 17 | } |
| 18 | if purgedCanonicalTopicIDs(state)[topicID] { |
| 19 | return newSessionOperationError(sessionOperationTargetNotFound, "This session was permanently deleted.") |
| 20 | } |
| 21 | return nil |
| 22 | } |
| 23 | |
| 24 | // Deleted sessions still own their old metadata topics. A topic with another |
| 25 | // surviving session/reservation is shared and must remain available to it. |
| 26 | func purgedCanonicalTopicIDs(state workspacestate.State) map[string]bool { |
| 27 | retired := map[string]bool{} |
| 28 | for _, op := range state.PendingOperations { |
| 29 | if (op.Kind != "purge" && op.Phase != "committed") || op.Presentation == nil || op.Presentation.TopicID == "" || len(op.SessionIDs) != 1 { |
| 30 | continue |
| 31 | } |
| 32 | if state.SessionStates[op.SessionIDs[0]].Lifecycle == workspacestate.Deleted { |
| 33 | retired[op.Presentation.TopicID] = true |
| 34 | } |
| 35 | } |
| 36 | for id, status := range state.SessionStates { |
| 37 | if status.Lifecycle != workspacestate.Deleted { |
| 38 | continue |
| 39 | } |
| 40 | if topic := state.Presentation[id].TopicID; topic != "" { |
| 41 | retired[topic] = true |
| 42 | } |
| 43 | // Previous manual-creation writers removed presentation on purge. |
| 44 | // Their session and topic IDs share this exact persisted hash; this |
| 45 | // recovers ownership without guessing from titles or deleting files. |
| 46 | if suffix, ok := strings.CutPrefix(id, "desktop-manual-"); ok && len(suffix) == 32 { |
| 47 | if _, err := hex.DecodeString(suffix); err == nil { |
| 48 | retired["manual-"+suffix] = true |
| 49 | } |
| 50 | } |
| 51 | } |
| 52 | for id, presentation := range state.Presentation { |
| 53 | if state.SessionStates[id].Lifecycle != workspacestate.Deleted { |
| 54 | delete(retired, presentation.TopicID) |
| 55 | } |
| 56 | } |
| 57 | for _, pending := range state.PendingCreates { |
| 58 | if pending.Presentation != nil { |
| 59 | delete(retired, pending.Presentation.TopicID) |
| 60 | } |
| 61 | } |
| 62 | return retired |
| 63 | } |
| 64 |