import logging
import secrets
from pathlib import Path

from fastapi import FastAPI, File, Form, HTTPException, UploadFile
from fastapi.responses import Response
from pydantic import BaseModel

from app.core import ollama_client
from app.core.config import settings
from app.core.docx_export import build_docx
from app.core.whisper_engine import engine as whisper

logging.basicConfig(level=logging.INFO, format="%(asctime)s [%(levelname)s] %(name)s: %(message)s")
log = logging.getLogger("mac-worker")

app = FastAPI(title="Voice-Agent Mac-Worker")


class SummarizeIn(BaseModel):
    transcript: str
    title: str = ""


class ProtocolIn(BaseModel):
    transcript: str
    summary: dict
    title: str = ""


@app.get("/health")
async def health():
    info = {
        "status": "ok",
        "whisper_engine": settings.whisper_engine,
        "whisper_model": settings.whisper_model,
        "ollama_model": settings.ollama_model,
        "ollama_reachable": False,
    }
    try:
        await ollama_client.health()
        info["ollama_reachable"] = True
    except Exception as e:  # noqa: BLE001
        info["ollama_error"] = str(e)
    return info


@app.post("/api/transcribe")
async def transcribe(audio: UploadFile = File(...), language: str = Form("de")):
    if not audio.filename:
        raise HTTPException(400, "Dateiname fehlt")
    suffix = Path(audio.filename).suffix or ".bin"
    tmp = settings.work_dir / (secrets.token_hex(8) + suffix)
    try:
        with tmp.open("wb") as f:
            while chunk := await audio.read(1024 * 1024):
                f.write(chunk)
        log.info("Transcribing %s (%.1f MB) lang=%s", audio.filename, tmp.stat().st_size / 1024 / 1024, language)
        result = whisper.transcribe(tmp, language=language)
        return result
    finally:
        tmp.unlink(missing_ok=True)


@app.post("/api/summarize")
async def summarize(payload: SummarizeIn):
    if not payload.transcript.strip():
        raise HTTPException(400, "Leerer Transkript")
    return await ollama_client.summarize(payload.transcript, title=payload.title)


@app.post("/api/protocol")
async def protocol(payload: ProtocolIn):
    if not payload.transcript.strip():
        raise HTTPException(400, "Leerer Transkript")
    return await ollama_client.make_protocol(payload.transcript, payload.summary, title=payload.title)


@app.post("/api/export/docx")
async def export_docx(protocol: dict):
    data = build_docx(protocol)
    return Response(
        content=data,
        media_type="application/vnd.openxmlformats-officedocument.wordprocessingml.document",
        headers={"Content-Disposition": 'attachment; filename="protocol.docx"'},
    )