"""
QModel v6 — Islamic RAG API
===========================
Specialized Quran & Hadith system with dual LLM backend support.

Modular architecture — see app/ package for implementation:
  app/config.py      – Config (env vars)
  app/llm.py         – LLM providers (Ollama, HuggingFace)
  app/cache.py       – TTL-LRU async cache
  app/arabic_nlp.py  – Arabic normalisation & stemming
  app/search.py      – Hybrid FAISS + BM25 search, text search
  app/analysis.py    – Intent detection, analytics, counting
  app/prompts.py     – Prompt engineering
  app/models.py      – Pydantic schemas
  app/state.py       – AppState, lifespan, RAG pipeline
  app/routers/       – FastAPI routers (quran, hadith, chat, ops)
"""

from __future__ import annotations

import logging

from dotenv import load_dotenv
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware

load_dotenv()

logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s | %(levelname)-8s | %(name)s | %(message)s",
)

from app.config import cfg
from app.state import lifespan
from app.routers import chat, hadith, ops, quran

# ═══════════════════════════════════════════════════════════════════════
# FASTAPI APP
# ═══════════════════════════════════════════════════════════════════════
app = FastAPI(
    title="QModel v6 — Islamic RAG API",
    description=(
        "Specialized Quran & Hadith system with dual LLM backend.\n\n"
        "**Capabilities:**\n"
        "- OpenAI-compatible chat completions\n"
        "- Streaming support\n"
        "- Islamic knowledge RAG pipeline"
    ),
    version="6.0.0",
    lifespan=lifespan,
)

app.add_middleware(
    CORSMiddleware,
    allow_origins=cfg.ALLOWED_ORIGINS.split(","),
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# Register routers
app.include_router(ops.router)
app.include_router(chat.router)
app.include_router(quran.router)
app.include_router(hadith.router)


if __name__ == "__main__":
    import uvicorn
    uvicorn.run(app, host="0.0.0.0", port=8000)