| 1 | package cli |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "errors" |
| 6 | "strings" |
| 7 | |
| 8 | "reasonix/internal/agent" |
| 9 | "reasonix/internal/config" |
| 10 | "reasonix/internal/control" |
| 11 | ) |
| 12 | |
| 13 | // modelForResumePath answers which model a resumed run should use. An explicit |
| 14 | // flag always wins; otherwise the saved selection is validated against the |
| 15 | // connection it was recorded against, so a migrated or edited connection fails |
| 16 | // closed instead of silently resuming under a different account. |
| 17 | func modelForResumePath(modelName, resumePath string, cfg *config.Config) (string, error) { |
| 18 | if strings.TrimSpace(modelName) != "" || strings.TrimSpace(resumePath) == "" { |
| 19 | return modelName, nil |
| 20 | } |
| 21 | sessionModel, identity, ok := agent.LoadSessionModelSelection(resumePath) |
| 22 | if !ok { |
| 23 | return modelName, nil |
| 24 | } |
| 25 | if cfg == nil { |
| 26 | return sessionModel, nil |
| 27 | } |
| 28 | resolved, err := cfg.ResolveSavedModel(sessionModel, identity) |
| 29 | if err != nil { |
| 30 | return "", err |
| 31 | } |
| 32 | if _, ok := cfg.ResolveModel(resolved); !ok { |
| 33 | return modelName, nil |
| 34 | } |
| 35 | return resolved, nil |
| 36 | } |
| 37 | |
| 38 | func applyResumeModel(model *string, resumePath string, cfg *config.Config) error { |
| 39 | resolved, err := modelForResumePath(*model, resumePath, cfg) |
| 40 | if err != nil { |
| 41 | return err |
| 42 | } |
| 43 | *model = resolved |
| 44 | return nil |
| 45 | } |
| 46 | |
| 47 | // copyResumableSession refuses to duplicate a session whose saved selection no |
| 48 | // longer resolves, so the copy cannot silently inherit an unusable connection. |
| 49 | func copyResumableSession(model, resumePath string, cfg *config.Config) (string, error) { |
| 50 | if _, err := modelForResumePath(model, resumePath, cfg); err != nil { |
| 51 | return "", err |
| 52 | } |
| 53 | return copySessionForWriting(resumePath) |
| 54 | } |
| 55 | |
| 56 | // resumeWithPersistedSelection records the selection the resumed controller |
| 57 | // actually accepted, so the next restart restores it instead of re-resolving. |
| 58 | func resumeWithPersistedSelection(ctrl *control.Controller, session *agent.Session, path string) error { |
| 59 | if err := ctrl.ResumeNativeSession(session, path); err != nil { |
| 60 | return err |
| 61 | } |
| 62 | return persistCLIModelSelection(ctrl) |
| 63 | } |
| 64 | |
| 65 | // commitResumedSession is a no-op without a resume target, so callers need no |
| 66 | // second guard around the takeover handover. |
| 67 | func commitResumedSession(binding *cliTakeoverBinding, manager *cliTakeoverManager, ctrl *control.Controller, session *agent.Session, target cliResumeTarget) error { |
| 68 | if target.empty() { |
| 69 | return nil |
| 70 | } |
| 71 | if target.canonical() { |
| 72 | // Final-format sessions have no transcript path to lease or load; the |
| 73 | // controller attaches to the identity and the session service's writer |
| 74 | // lease decides ownership. |
| 75 | if ctrl.SessionService() == nil { |
| 76 | return errors.New("resuming a final-format session requires the session engine") |
| 77 | } |
| 78 | _, err := ctrl.OpenSession(context.Background(), target.ref) |
| 79 | return err |
| 80 | } |
| 81 | if err := binding.commitPrevious(manager); err != nil { |
| 82 | return err |
| 83 | } |
| 84 | return resumeWithPersistedSelection(ctrl, session, target.path) |
| 85 | } |
| 86 | |
| 87 | // prepareServeSessionPath picks serve's auto-save target: reuse the resumed |
| 88 | // file, adopt the caller's session id, or leave the controller to stamp a |
| 89 | // fresh path. |
| 90 | func prepareServeSessionPath(ctrl *control.Controller, session *agent.Session, resumePath, sessionID string) error { |
| 91 | if strings.TrimSpace(resumePath) != "" { |
| 92 | return resumeWithPersistedSelection(ctrl, session, resumePath) |
| 93 | } |
| 94 | if strings.TrimSpace(sessionID) == "" { |
| 95 | return nil |
| 96 | } |
| 97 | if ctrl.UsesExclusiveSession() { |
| 98 | _, err := ctrl.BindFreshSession(context.Background(), strings.TrimSpace(sessionID)) |
| 99 | return err |
| 100 | } |
| 101 | freshPath, err := freshWebSessionPath(ctrl.SessionDir(), sessionID) |
| 102 | if err != nil { |
| 103 | return err |
| 104 | } |
| 105 | ctrl.SetFreshSessionPath(freshPath) |
| 106 | return nil |
| 107 | } |
| 108 |