refactor(voice-call): split manager

extensions/voice-call/src/manager/outbound.ts

@@ -0,0 +1,247 @@
+import crypto from "node:crypto";
+
+import { TerminalStates, type CallId, type CallRecord, type OutboundCallOptions } from "../types.js";
+import type { CallMode } from "../config.js";
+import { mapVoiceToPolly } from "../voice-mapping.js";
+import type { CallManagerContext } from "./context.js";
+import { getCallByProviderCallId } from "./lookup.js";
+import { generateNotifyTwiml } from "./twiml.js";
+import { addTranscriptEntry, transitionState } from "./state.js";
+import { persistCallRecord } from "./store.js";
+import { clearMaxDurationTimer, clearTranscriptWaiter, rejectTranscriptWaiter, waitForFinalTranscript } from "./timers.js";
+
+export async function initiateCall(
+  ctx: CallManagerContext,
+  to: string,
+  sessionKey?: string,
+  options?: OutboundCallOptions | string,
+): Promise<{ callId: CallId; success: boolean; error?: string }> {
+  const opts: OutboundCallOptions =
+    typeof options === "string" ? { message: options } : (options ?? {});
+  const initialMessage = opts.message;
+  const mode = opts.mode ?? ctx.config.outbound.defaultMode;
+
+  if (!ctx.provider) {
+    return { callId: "", success: false, error: "Provider not initialized" };
+  }
+  if (!ctx.webhookUrl) {
+    return { callId: "", success: false, error: "Webhook URL not configured" };
+  }
+
+  if (ctx.activeCalls.size >= ctx.config.maxConcurrentCalls) {
+    return {
+      callId: "",
+      success: false,
+      error: `Maximum concurrent calls (${ctx.config.maxConcurrentCalls}) reached`,
+    };
+  }
+
+  const callId = crypto.randomUUID();
+  const from =
+    ctx.config.fromNumber ||
+    (ctx.provider?.name === "mock" ? "+15550000000" : undefined);
+  if (!from) {
+    return { callId: "", success: false, error: "fromNumber not configured" };
+  }
+
+  const callRecord: CallRecord = {
+    callId,
+    provider: ctx.provider.name,
+    direction: "outbound",
+    state: "initiated",
+    from,
+    to,
+    sessionKey,
+    startedAt: Date.now(),
+    transcript: [],
+    processedEventIds: [],
+    metadata: {
+      ...(initialMessage && { initialMessage }),
+      mode,
+    },
+  };
+
+  ctx.activeCalls.set(callId, callRecord);
+  persistCallRecord(ctx.storePath, callRecord);
+
+  try {
+    // For notify mode with a message, use inline TwiML with <Say>.
+    let inlineTwiml: string | undefined;
+    if (mode === "notify" && initialMessage) {
+      const pollyVoice = mapVoiceToPolly(ctx.config.tts.voice);
+      inlineTwiml = generateNotifyTwiml(initialMessage, pollyVoice);
+      console.log(`[voice-call] Using inline TwiML for notify mode (voice: ${pollyVoice})`);
+    }
+
+    const result = await ctx.provider.initiateCall({
+      callId,
+      from,
+      to,
+      webhookUrl: ctx.webhookUrl,
+      inlineTwiml,
+    });
+
+    callRecord.providerCallId = result.providerCallId;
+    ctx.providerCallIdMap.set(result.providerCallId, callId);
+    persistCallRecord(ctx.storePath, callRecord);
+
+    return { callId, success: true };
+  } catch (err) {
+    callRecord.state = "failed";
+    callRecord.endedAt = Date.now();
+    callRecord.endReason = "failed";
+    persistCallRecord(ctx.storePath, callRecord);
+    ctx.activeCalls.delete(callId);
+    if (callRecord.providerCallId) {
+      ctx.providerCallIdMap.delete(callRecord.providerCallId);
+    }
+
+    return {
+      callId,
+      success: false,
+      error: err instanceof Error ? err.message : String(err),
+    };
+  }
+}
+
+export async function speak(
+  ctx: CallManagerContext,
+  callId: CallId,
+  text: string,
+): Promise<{ success: boolean; error?: string }> {
+  const call = ctx.activeCalls.get(callId);
+  if (!call) return { success: false, error: "Call not found" };
+  if (!ctx.provider || !call.providerCallId) return { success: false, error: "Call not connected" };
+  if (TerminalStates.has(call.state)) return { success: false, error: "Call has ended" };
+
+  try {
+    transitionState(call, "speaking");
+    persistCallRecord(ctx.storePath, call);
+
+    addTranscriptEntry(call, "bot", text);
+
+    await ctx.provider.playTts({
+      callId,
+      providerCallId: call.providerCallId,
+      text,
+      voice: ctx.config.tts.voice,
+    });
+
+    return { success: true };
+  } catch (err) {
+    return { success: false, error: err instanceof Error ? err.message : String(err) };
+  }
+}
+
+export async function speakInitialMessage(
+  ctx: CallManagerContext,
+  providerCallId: string,
+): Promise<void> {
+  const call = getCallByProviderCallId({
+    activeCalls: ctx.activeCalls,
+    providerCallIdMap: ctx.providerCallIdMap,
+    providerCallId,
+  });
+  if (!call) {
+    console.warn(`[voice-call] speakInitialMessage: no call found for ${providerCallId}`);
+    return;
+  }
+
+  const initialMessage = call.metadata?.initialMessage as string | undefined;
+  const mode = (call.metadata?.mode as CallMode) ?? "conversation";
+
+  if (!initialMessage) {
+    console.log(`[voice-call] speakInitialMessage: no initial message for ${call.callId}`);
+    return;
+  }
+
+  // Clear so we don't speak it again if the provider reconnects.
+  if (call.metadata) {
+    delete call.metadata.initialMessage;
+    persistCallRecord(ctx.storePath, call);
+  }
+
+  console.log(`[voice-call] Speaking initial message for call ${call.callId} (mode: ${mode})`);
+  const result = await speak(ctx, call.callId, initialMessage);
+  if (!result.success) {
+    console.warn(`[voice-call] Failed to speak initial message: ${result.error}`);
+    return;
+  }
+
+  if (mode === "notify") {
+    const delaySec = ctx.config.outbound.notifyHangupDelaySec;
+    console.log(`[voice-call] Notify mode: auto-hangup in ${delaySec}s for call ${call.callId}`);
+    setTimeout(async () => {
+      const currentCall = ctx.activeCalls.get(call.callId);
+      if (currentCall && !TerminalStates.has(currentCall.state)) {
+        console.log(`[voice-call] Notify mode: hanging up call ${call.callId}`);
+        await endCall(ctx, call.callId);
+      }
+    }, delaySec * 1000);
+  }
+}
+
+export async function continueCall(
+  ctx: CallManagerContext,
+  callId: CallId,
+  prompt: string,
+): Promise<{ success: boolean; transcript?: string; error?: string }> {
+  const call = ctx.activeCalls.get(callId);
+  if (!call) return { success: false, error: "Call not found" };
+  if (!ctx.provider || !call.providerCallId) return { success: false, error: "Call not connected" };
+  if (TerminalStates.has(call.state)) return { success: false, error: "Call has ended" };
+
+  try {
+    await speak(ctx, callId, prompt);
+
+    transitionState(call, "listening");
+    persistCallRecord(ctx.storePath, call);
+
+    await ctx.provider.startListening({ callId, providerCallId: call.providerCallId });
+
+    const transcript = await waitForFinalTranscript(ctx, callId);
+
+    // Best-effort: stop listening after final transcript.
+    await ctx.provider.stopListening({ callId, providerCallId: call.providerCallId });
+
+    return { success: true, transcript };
+  } catch (err) {
+    return { success: false, error: err instanceof Error ? err.message : String(err) };
+  } finally {
+    clearTranscriptWaiter(ctx, callId);
+  }
+}
+
+export async function endCall(
+  ctx: CallManagerContext,
+  callId: CallId,
+): Promise<{ success: boolean; error?: string }> {
+  const call = ctx.activeCalls.get(callId);
+  if (!call) return { success: false, error: "Call not found" };
+  if (!ctx.provider || !call.providerCallId) return { success: false, error: "Call not connected" };
+  if (TerminalStates.has(call.state)) return { success: true };
+
+  try {
+    await ctx.provider.hangupCall({
+      callId,
+      providerCallId: call.providerCallId,
+      reason: "hangup-bot",
+    });
+
+    call.state = "hangup-bot";
+    call.endedAt = Date.now();
+    call.endReason = "hangup-bot";
+    persistCallRecord(ctx.storePath, call);
+
+    clearMaxDurationTimer(ctx, callId);
+    rejectTranscriptWaiter(ctx, callId, "Call ended: hangup-bot");
+
+    ctx.activeCalls.delete(callId);
+    if (call.providerCallId) ctx.providerCallIdMap.delete(call.providerCallId);
+
+    return { success: true };
+  } catch (err) {
+    return { success: false, error: err instanceof Error ? err.message : String(err) };
+  }
+}
+