feat: add cursor local adapter across server ui and cli

packages/adapters/cursor-local/src/cli/format-event.ts

@@ -0,0 +1,226 @@
+import pc from "picocolors";
+
+function asRecord(value: unknown): Record<string, unknown> | null {
+  if (typeof value !== "object" || value === null || Array.isArray(value)) return null;
+  return value as Record<string, unknown>;
+}
+
+function asString(value: unknown, fallback = ""): string {
+  return typeof value === "string" ? value : fallback;
+}
+
+function asNumber(value: unknown, fallback = 0): number {
+  return typeof value === "number" && Number.isFinite(value) ? value : fallback;
+}
+
+function stringifyUnknown(value: unknown): string {
+  if (typeof value === "string") return value;
+  if (value === null || value === undefined) return "";
+  try {
+    return JSON.stringify(value, null, 2);
+  } catch {
+    return String(value);
+  }
+}
+
+function printAssistantMessage(messageRaw: unknown): void {
+  if (typeof messageRaw === "string") {
+    const text = messageRaw.trim();
+    if (text) console.log(pc.green(`assistant: ${text}`));
+    return;
+  }
+
+  const message = asRecord(messageRaw);
+  if (!message) return;
+
+  const directText = asString(message.text).trim();
+  if (directText) console.log(pc.green(`assistant: ${directText}`));
+
+  const content = Array.isArray(message.content) ? message.content : [];
+  for (const partRaw of content) {
+    const part = asRecord(partRaw);
+    if (!part) continue;
+    const type = asString(part.type).trim();
+
+    if (type === "output_text" || type === "text") {
+      const text = asString(part.text).trim();
+      if (text) console.log(pc.green(`assistant: ${text}`));
+      continue;
+    }
+
+    if (type === "thinking") {
+      const text = asString(part.text).trim();
+      if (text) console.log(pc.gray(`thinking: ${text}`));
+      continue;
+    }
+
+    if (type === "tool_call") {
+      const name = asString(part.name, asString(part.tool, "tool"));
+      console.log(pc.yellow(`tool_call: ${name}`));
+      const input = part.input ?? part.arguments ?? part.args;
+      if (input !== undefined) {
+        try {
+          console.log(pc.gray(JSON.stringify(input, null, 2)));
+        } catch {
+          console.log(pc.gray(String(input)));
+        }
+      }
+      continue;
+    }
+
+    if (type === "tool_result") {
+      const isError = part.is_error === true || asString(part.status).toLowerCase() === "error";
+      const contentText =
+        asString(part.output) ||
+        asString(part.text) ||
+        asString(part.result) ||
+        stringifyUnknown(part.output ?? part.result ?? part.text ?? part);
+      console.log((isError ? pc.red : pc.cyan)(`tool_result${isError ? " (error)" : ""}`));
+      if (contentText) console.log((isError ? pc.red : pc.gray)(contentText));
+    }
+  }
+}
+
+function printLegacyToolEvent(part: Record<string, unknown>): void {
+  const tool = asString(part.tool, "tool");
+  const callId = asString(part.callID, asString(part.id, ""));
+  const state = asRecord(part.state);
+  const status = asString(state?.status);
+  const input = state?.input;
+  const output = asString(state?.output).replace(/\s+$/, "");
+  const metadata = asRecord(state?.metadata);
+  const exit = asNumber(metadata?.exit, NaN);
+  const isError =
+    status === "failed" ||
+    status === "error" ||
+    status === "cancelled" ||
+    (Number.isFinite(exit) && exit !== 0);
+
+  console.log(pc.yellow(`tool_call: ${tool}${callId ? ` (${callId})` : ""}`));
+  if (input !== undefined) {
+    try {
+      console.log(pc.gray(JSON.stringify(input, null, 2)));
+    } catch {
+      console.log(pc.gray(String(input)));
+    }
+  }
+
+  if (status || output) {
+    const summary = [
+      "tool_result",
+      status ? `status=${status}` : "",
+      Number.isFinite(exit) ? `exit=${exit}` : "",
+    ]
+      .filter(Boolean)
+      .join(" ");
+    console.log((isError ? pc.red : pc.cyan)(summary));
+    if (output) {
+      console.log((isError ? pc.red : pc.gray)(output));
+    }
+  }
+}
+
+export function printCursorStreamEvent(raw: string, _debug: boolean): void {
+  const line = raw.trim();
+  if (!line) return;
+
+  let parsed: Record<string, unknown> | null = null;
+  try {
+    parsed = JSON.parse(line) as Record<string, unknown>;
+  } catch {
+    console.log(line);
+    return;
+  }
+
+  const type = asString(parsed.type);
+
+  if (type === "system") {
+    const subtype = asString(parsed.subtype);
+    if (subtype === "init") {
+      const sessionId =
+        asString(parsed.session_id) ||
+        asString(parsed.sessionId) ||
+        asString(parsed.sessionID);
+      const model = asString(parsed.model);
+      const details = [sessionId ? `session: ${sessionId}` : "", model ? `model: ${model}` : ""]
+        .filter(Boolean)
+        .join(", ");
+      console.log(pc.blue(`Cursor init${details ? ` (${details})` : ""}`));
+      return;
+    }
+    console.log(pc.blue(`system: ${subtype || "event"}`));
+    return;
+  }
+
+  if (type === "assistant") {
+    printAssistantMessage(parsed.message);
+    return;
+  }
+
+  if (type === "result") {
+    const usage = asRecord(parsed.usage);
+    const input = asNumber(usage?.input_tokens, asNumber(usage?.inputTokens));
+    const output = asNumber(usage?.output_tokens, asNumber(usage?.outputTokens));
+    const cached = asNumber(
+      usage?.cached_input_tokens,
+      asNumber(usage?.cachedInputTokens, asNumber(usage?.cache_read_input_tokens)),
+    );
+    const cost = asNumber(parsed.total_cost_usd, asNumber(parsed.cost_usd, asNumber(parsed.cost)));
+    const subtype = asString(parsed.subtype, "result");
+    const isError = parsed.is_error === true || subtype === "error" || subtype === "failed";
+
+    console.log(pc.blue(`result: subtype=${subtype}`));
+    console.log(pc.blue(`tokens: in=${input} out=${output} cached=${cached} cost=$${cost.toFixed(6)}`));
+    const resultText = asString(parsed.result).trim();
+    if (resultText) console.log((isError ? pc.red : pc.green)(`assistant: ${resultText}`));
+    const errors = Array.isArray(parsed.errors) ? parsed.errors.map((value) => stringifyUnknown(value)).filter(Boolean) : [];
+    if (errors.length > 0) console.log(pc.red(`errors: ${errors.join(" | ")}`));
+    return;
+  }
+
+  if (type === "error") {
+    const message = asString(parsed.message) || stringifyUnknown(parsed.error ?? parsed.detail) || line;
+    console.log(pc.red(`error: ${message}`));
+    return;
+  }
+
+  // Compatibility with older stream-json event shapes.
+  if (type === "step_start") {
+    const sessionId = asString(parsed.sessionID);
+    console.log(pc.blue(`step started${sessionId ? ` (session: ${sessionId})` : ""}`));
+    return;
+  }
+
+  if (type === "text") {
+    const part = asRecord(parsed.part);
+    const text = asString(part?.text);
+    if (text) console.log(pc.green(`assistant: ${text}`));
+    return;
+  }
+
+  if (type === "tool_use") {
+    const part = asRecord(parsed.part);
+    if (part) {
+      printLegacyToolEvent(part);
+    } else {
+      console.log(pc.yellow("tool_use"));
+    }
+    return;
+  }
+
+  if (type === "step_finish") {
+    const part = asRecord(parsed.part);
+    const tokens = asRecord(part?.tokens);
+    const cache = asRecord(tokens?.cache);
+    const reason = asString(part?.reason, "step_finish");
+    const input = asNumber(tokens?.input);
+    const output = asNumber(tokens?.output);
+    const cached = asNumber(cache?.read);
+    const cost = asNumber(part?.cost);
+    console.log(pc.blue(`step finished: reason=${reason}`));
+    console.log(pc.blue(`tokens: in=${input} out=${output} cached=${cached} cost=$${cost.toFixed(6)}`));
+    return;
+  }
+
+  console.log(line);
+}