# chat/api/app.py
"""
DeepSeek V4 chat standalone FastAPI app.

Run standalone::

    uvicorn chat.api.app:app --host 0.0.0.0 --port 8003

or mount into the Sovereign orchestrator (src/sovereign/main.py) which
includes chat.api.routes.router under /api/v1/chat.
"""

from __future__ import annotations

from fastapi import FastAPI

from chat import __brand__, __version__
from chat.api.routes import router

app = FastAPI(
    title="DeepSeek V4 Chat API",
    version=__version__,
    description=f"{__brand__} — sovereign-tuned conversational core",
)
app.include_router(router)


@app.get("/")
def index() -> dict:
    """Service banner."""
    return {
        "service": "chat",
        "brand": __brand__,
        "version": __version__,
        "endpoints": "/api/v1/chat/*",
    }


@app.get("/health")
def health() -> dict:
    """Liveness probe."""
    return {"status": "ok", "brand": __brand__, "version": __version__}