import { CodeTabs } from '../views/docs/CodeTabs';
import { Callout, NextLink, PropTable } from '../views/docs/prose';
export const SET_LANGUAGE_MODE_SIG_PY = `call.set_language_mode(
    primary: Language = "english",
    secondary: list[Language] | None = None,
)`;

export const SET_LANGUAGE_MODE_SIG_TS = `await call.setLanguageMode({
  primary?: Language,   // default: "english"
  secondary?: Language[],
})

// Language = "english" | "spanish" | "french" | "german" | "italian"`;

export const SET_LANGUAGE_MODE_EX1_PY = `@agent.on_call_start
def on_call_start(call: guava.Call):
    call.set_persona(organization_name="Harper Valley Property Insurance")
    call.set_language_mode(primary="english", secondary=["spanish"])
    call.set_task(
        task_id="intro",
        objective="Answer questions regarding property insurance policy.",
    )`;

export const SET_LANGUAGE_MODE_EX1_TS = `agent.onCallStart(async (call: guava.Call) => {
  await call.setPersona({ organizationName: "Harper Valley Property Insurance" });
  await call.setLanguageMode({ primary: "english", secondary: ["spanish"] });
  await call.setTask({
    taskId: "intro",
    objective: "Answer questions regarding property insurance policy.",
  });
});`;

export const SET_LANGUAGE_MODE_EX2_PY = `call.set_language_mode(
    primary="english",
    secondary=["spanish", "french", "german"],
)`;

export const SET_LANGUAGE_MODE_EX2_TS = `await call.setLanguageMode({
  primary: "english",
  secondary: ["spanish", "french", "german"],
});`;

## set\_language\_mode()

Configures the voice agent to understand and respond in additional languages beyond English. The agent starts in the primary language and switches to a secondary language when the caller requests it or speaks in that language.

<CodeTabs
  python={{ code: SET_LANGUAGE_MODE_SIG_PY, filename: "signature" }}
  typescript={{ code: SET_LANGUAGE_MODE_SIG_TS, filename: "signature" }}
/>

<PropTable rows={[
  {
    name: "primary",
    type: "Language",
    default: '"english"',
    desc: "The language the agent starts the conversation in.",
  },
  {
    name: "secondary",
    type: "list[Language] | None",
    default: "None",
    desc: "Additional languages the agent can switch to when the caller requests them.",
  },
]} />

The `Language` type is defined as:

```
Literal["english", "spanish", "french", "german", "italian"]
```

**Return value:** `None` / `Promise<void>`

### Example: single secondary language

<CodeTabs
  python={{ code: SET_LANGUAGE_MODE_EX1_PY, filename: "example.py" }}
  typescript={{ code: SET_LANGUAGE_MODE_EX1_TS, filename: "example.ts" }}
/>

### Example: multiple secondary languages

<CodeTabs
  python={{ code: SET_LANGUAGE_MODE_EX2_PY, filename: "example.py" }}
  typescript={{ code: SET_LANGUAGE_MODE_EX2_TS, filename: "example.ts" }}
/>

### Transcript behavior

- There is no auto-translation on the transcript. Each turn appears in the language it was spoken in — if the caller speaks Spanish, that turn is in Spanish; if they speak English, that turn is in English.
- There is currently no per-turn language marker in the transcript.

### Edge cases

- If `secondary` is `None` or empty, the agent operates in `primary` only (the current default behavior).
- When a non-English language is detected during a call, the system automatically switches to a language-specific TTS voice.
- The `grace` voice has clones for Spanish, French, German, and Italian. If no dedicated clone exists for a voice + language combination, the base voice is used.

<Callout>
  <span className="text-primary font-semibold">Compliance:</span> Non-English languages are not currently supported for HITRUST / PCI-compliant deployments. Support is planned.
</Callout>

<NextLink section="field" label="Field" />