| 1 | package control |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "errors" |
| 6 | "log/slog" |
| 7 | "os" |
| 8 | |
| 9 | "reasonix/internal/agent" |
| 10 | "reasonix/internal/provider" |
| 11 | "reasonix/internal/session" |
| 12 | ) |
| 13 | |
| 14 | // EnsureSessionPath pins a fresh auto-save file for this controller when none is |
| 15 | // set yet and a session dir is configured — the "fresh session" branch every |
| 16 | // surface runs right after building a controller. It is a no-op once a resume or |
| 17 | // continue has already pinned a path (SessionPath() != ""), so callers can run a |
| 18 | // conditional Resume and then invoke this unconditionally. Centralises the |
| 19 | // per-surface copies of this logic (the CLI chat/serve fresh branches and the |
| 20 | // bot's former ensureControllerSessionPath). |
| 21 | func (c *Controller) EnsureSessionPath() { |
| 22 | c.ensureSessionPath(session.CreateOptions{}) |
| 23 | } |
| 24 | |
| 25 | // EnsureHeadlessRunSessionPath is EnsureSessionPath for a one-shot run: a |
| 26 | // fresh store records that kind so conversation lists can leave it out. |
| 27 | func (c *Controller) EnsureHeadlessRunSessionPath() { |
| 28 | c.ensureSessionPath(session.CreateOptions{Kind: session.SessionKindHeadlessRun}) |
| 29 | } |
| 30 | |
| 31 | func (c *Controller) ensureSessionPath(options session.CreateOptions) { |
| 32 | if _, ok := c.SessionRef(); ok { |
| 33 | return |
| 34 | } |
| 35 | if service, _, exclusive := c.v3Binding(); exclusive && service != nil { |
| 36 | if _, err := c.BindFreshSessionWithOptions(context.Background(), options); err != nil { |
| 37 | c.failTurnEventLedger(err) |
| 38 | } |
| 39 | return |
| 40 | } |
| 41 | if c.SessionPath() != "" || c.SessionDir() == "" { |
| 42 | return |
| 43 | } |
| 44 | c.SetFreshSessionPath(agent.NewSessionPath(c.SessionDir(), c.Label())) |
| 45 | } |
| 46 | |
| 47 | // AdoptHistory makes a freshly built controller continue an existing |
| 48 | // conversation in path: it resumes the carried messages there when there are |
| 49 | // any, otherwise just points auto-save at path. An empty path with no messages |
| 50 | // is a no-op. This is the shared kernel of the model/effort switch across the |
| 51 | // CLI, the HTTP server, and ACP — each computes path its own way |
| 52 | // (ContinueSessionPath for the CLI/serve, the pinned transcript for ACP) and |
| 53 | // hands the carried history (Controller.History()) here. Keeping the |
| 54 | // Resume/SetSessionPath choice in one place avoids the orphaned-duplicate class |
| 55 | // of bug (#2807) recurring as each surface copied it. |
| 56 | func (c *Controller) AdoptHistory(msgs []provider.Message, path string) { |
| 57 | if c.sessionEngineEnabled() { |
| 58 | if _, ok := c.SessionRef(); ok { |
| 59 | if len(msgs) > 0 { |
| 60 | if err := c.replaceSessionEventProjection(context.Background(), "explicit-history-adopt", msgs); err != nil { |
| 61 | slog.Warn("controller: record adopted v3 history", "err", err) |
| 62 | c.failTurnEventLedger(err) |
| 63 | } else { |
| 64 | c.restoreExecutorFromSessionEvents() |
| 65 | } |
| 66 | } else { |
| 67 | c.restoreExecutorFromSessionEvents() |
| 68 | } |
| 69 | return |
| 70 | } |
| 71 | if path == "" { |
| 72 | // A hot rebuild may carry an in-memory conversation that never had |
| 73 | // persistent identity. Keep it as the candidate model/UI state; the |
| 74 | // first real input will create one v3 session and seed these exact |
| 75 | // messages. This is not a committed session until that admission. |
| 76 | if len(msgs) > 0 && c.executor != nil { |
| 77 | c.executor.SetSession(agent.NewSession("").CloneWithMessages(msgs)) |
| 78 | } |
| 79 | return |
| 80 | } |
| 81 | if path != "" { |
| 82 | if _, statErr := os.Stat(path); os.IsNotExist(statErr) { |
| 83 | if _, err := c.BindFreshSession(context.Background(), ""); err != nil { |
| 84 | c.failTurnEventLedger(err) |
| 85 | return |
| 86 | } |
| 87 | if len(msgs) > 0 { |
| 88 | if err := c.replaceSessionEventProjection(context.Background(), "fresh-history-adopt", msgs); err != nil { |
| 89 | c.failTurnEventLedger(err) |
| 90 | } else { |
| 91 | c.restoreExecutorFromSessionEvents() |
| 92 | } |
| 93 | } |
| 94 | return |
| 95 | } |
| 96 | loaded, err := agent.LoadSession(path) |
| 97 | if err == nil && len(msgs) > 0 { |
| 98 | loaded = loaded.CloneWithMessages(msgs) |
| 99 | } |
| 100 | if err == nil { |
| 101 | err = c.ResumeNativeSession(loaded, path) |
| 102 | } |
| 103 | if err != nil { |
| 104 | slog.Warn("controller: native legacy continue failed", "path", path, "err", err) |
| 105 | c.failTurnEventLedger(err) |
| 106 | } |
| 107 | } |
| 108 | return |
| 109 | } |
| 110 | if len(msgs) > 0 { |
| 111 | if path != "" { |
| 112 | if loaded, err := agent.LoadSession(path); err == nil && loaded != nil { |
| 113 | if resumed, ok := loaded.CloneWithMessagesIfCompatible(msgs); ok { |
| 114 | c.Resume(resumed, path) |
| 115 | return |
| 116 | } |
| 117 | } |
| 118 | } |
| 119 | c.Resume(agent.NewSession("").CloneWithMessages(msgs), path) |
| 120 | } else if path != "" { |
| 121 | // Even an empty transcript can carry session-scoped sidecars such as a |
| 122 | // running or blocked Goal. Resume a persisted empty session so controller |
| 123 | // rebuilds preserve that state; fall back to a plain binding for a fresh |
| 124 | // path that has not been saved yet. |
| 125 | if loaded, err := agent.LoadSession(path); err == nil && loaded != nil { |
| 126 | c.Resume(loaded, path) |
| 127 | return |
| 128 | } |
| 129 | c.SetSessionPath(path) |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | // AdoptNativeRebuiltContext retains the original format and selected head. |
| 134 | func (c *Controller) AdoptNativeRebuiltContext(old *Controller, msgs []provider.Message, path string) error { |
| 135 | if old == nil || old.executor == nil || old.executor.Session() == nil { |
| 136 | return errors.New("native rebuild requires the original session") |
| 137 | } |
| 138 | // Carry the loaded format and selected DAG head, including unsaved state. |
| 139 | // Reloading the path here would select the disk's default head instead. |
| 140 | if err := c.ResumeNativeSession(old.executor.Session().CloneWithMessages(msgs), path); err != nil { |
| 141 | return err |
| 142 | } |
| 143 | if c.UsesExclusiveSession() { |
| 144 | return c.AdoptRebuiltModelContext(msgs) |
| 145 | } |
| 146 | return nil |
| 147 | } |
| 148 | |
| 149 | // AdoptRebuiltModelContext changes only the provider-visible context of a |
| 150 | // bound canonical session; display history stays on its original event stream. |
| 151 | func (c *Controller) AdoptRebuiltModelContext(msgs []provider.Message) error { |
| 152 | if !c.sessionEngineEnabled() { |
| 153 | return errors.New("model-context adoption requires an exclusive v3 session") |
| 154 | } |
| 155 | if len(msgs) == 0 { |
| 156 | if snapshot, ok := c.sessionEventSnapshot(); ok { |
| 157 | msgs = snapshot.Projection.ModelMessages |
| 158 | } |
| 159 | } |
| 160 | return c.replaceSessionModelContext(context.Background(), msgs, "agent-rebuild") |
| 161 | } |
| 162 |