feat(tui): add minimal thinking mode with click-to-expand (#27623)

2026-05-16 02:09:58 +05:30
parent f21c582db9
commit f060874b29
4 changed files with 219 additions and 47 deletions
@@ -0,0 +1,67 @@
+import { createMemo, type Setter } from "solid-js"
+import { Flag } from "@opencode-ai/core/flag/flag"
+import { useKV } from "./kv"
+
+export type ThinkingMode = "show" | "minimal" | "hide"
+
+const MODES: readonly ThinkingMode[] = ["show", "minimal", "hide"] as const
+
+// OpenAI's Responses API surfaces reasoning summaries that start with a bolded
+// title line: "**Inspecting PR workflow**\n\n<body>". GitHub Copilot routes
+// through the same shape, and the opencode provider relays it too. Pull the
+// title out for a nicer label; return null for providers that don't follow
+// this convention so the caller can fall back to a generic "Thinking" string.
+export function reasoningTitle(text: string): string | null {
+  const match = text.trimStart().match(/^\*\*([^*\n]+)\*\*/)
+  return match ? match[1].trim() : null
+}
+
+export function isThinkingMode(value: unknown): value is ThinkingMode {
+  return typeof value === "string" && (MODES as readonly string[]).includes(value)
+}
+
+// Cycle order matches the slash command: show → minimal → hide → show.
+export function nextThinkingMode(current: ThinkingMode): ThinkingMode {
+  const idx = MODES.indexOf(current)
+  return MODES[(idx + 1) % MODES.length] ?? "show"
+}
+
+export function useThinkingMode() {
+  const kv = useKV()
+  // Capture pre-state before `kv.signal` seeds a default, so we can detect
+  // first-time users with a legacy `thinking_visibility` boolean and migrate.
+  // The KVProvider only renders children once kv.ready, so reads here are safe.
+  const hadStored = kv.get("thinking_mode") !== undefined
+  const legacy = kv.get("thinking_visibility")
+  const [stored, setStored] = kv.signal<ThinkingMode>("thinking_mode", "minimal")
+
+  // The kv signal exposes its setter typed as `Setter<T>` which carries Solid's
+  // overload set; passing an updater fn through a property access loses the
+  // bivariance trick the existing `setX((prev) => ...)` callsites rely on.
+  // Wrap it in a sane shape so consumers can just call `set(next)` or pass
+  // an updater.
+  const set = (next: ThinkingMode | ((prev: ThinkingMode) => ThinkingMode)) => {
+    if (typeof next === "function") setStored(next as Setter<ThinkingMode>)
+    else setStored(() => next)
+  }
+
+  // Preserve previous experience for users who had explicitly toggled the
+  // legacy `thinking_visibility` boolean. First-time users (no legacy key)
+  // get the new "minimal" default.
+  if (!hadStored) {
+    if (legacy === true) set("show")
+    else if (legacy === false) set("hide")
+  }
+
+  const mode = createMemo<ThinkingMode>(() => {
+    if (Flag.OPENCODE_EXPERIMENTAL_MINIMAL_THINKING) return "minimal"
+    const value = stored()
+    return isThinkingMode(value) ? value : "minimal"
+  })
+
+  return {
+    mode,
+    set,
+    locked: () => Flag.OPENCODE_EXPERIMENTAL_MINIMAL_THINKING === true,
+  }
+}