import os
from fastapi import FastAPI, Depends, HTTPException, status
from fastapi.responses import FileResponse
from fastapi.security import HTTPBasic, HTTPBasicCredentials
from fastapi.middleware.cors import CORSMiddleware
from dotenv import load_dotenv
from create_database import create_db
from routers import teacher, review, user

# Cargar variables de entorno desde el archivo .env
load_dotenv()
if not os.path.exists("site.db"):
    create_db()

# Obtener credenciales de las variables de entorno
BASIC_AUTH_USER = os.getenv("BASIC_AUTH_USER")
BASIC_AUTH_PASSWORD = os.getenv("BASIC_AUTH_PASSWORD")


app = FastAPI(
    title="API de revisión de profesores",
    description="API para revisar profesores",
    version="2.8.7",
    openapi_url="/teacher-openapi.json",
    docs_url="/teacher-docs",
    redoc_url="/teacher-redoc",
    contact={
        "name": "teacher",
        "url": "https://www.test.com",
        "email": "calificandoprofesoruniversidad@gmail.com",
    },
    license_info={"name": "MIT", "url": "https://opensource.org/licenses/MIT"},
)

# CORS
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

security = HTTPBasic()


def authenticate(credentials: HTTPBasicCredentials = Depends(security)):
    if (
        credentials.username != BASIC_AUTH_USER
        or credentials.password != BASIC_AUTH_PASSWORD
    ):
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="Credenciales incorrectas",
            headers={"WWW-Authenticate": "Basic"},
        )


@app.get(
    "/",
    summary="Saludo",
    description="Saludo de la API",
)
def read_root():
    return {"message": "Bienvenido a la API de la revisión de profesores"}


app.include_router(teacher.router, dependencies=[Depends(authenticate)])
app.include_router(review.router, dependencies=[Depends(authenticate)])
app.include_router(user.router, dependencies=[Depends(authenticate)])