"""Authentication routes."""

from flask import Blueprint, url_for

from app.services.auth_service import AuthService

bp = Blueprint("auth", __name__)
auth_service = AuthService()


@bp.route("/login")
def login() -> dict[str, str]:
    """Initiate Google OAuth login."""
    redirect_uri = url_for("auth.callback", _external=True)
    login_url = auth_service.get_login_url(redirect_uri)
    return {"login_url": login_url}


@bp.route("/callback")
def callback():
    """Handle OAuth callback from Google."""
    try:
        user_data, response = auth_service.handle_callback()
        return response
    except Exception as e:
        return {"error": str(e)}, 400


@bp.route("/logout")
def logout():
    """Logout current user."""
    return auth_service.logout()


@bp.route("/me")
def me() -> dict[str, str] | tuple[dict[str, str], int]:
    """Get current user information."""
    user = auth_service.get_current_user()
    if not user:
        return {"error": "Not authenticated"}, 401

    return {"user": user}


@bp.route("/refresh")
def refresh():
    """Refresh access token using refresh token."""
    response = auth_service.refresh_tokens()
    if not response:
        return {"error": "Invalid or expired refresh token"}, 401

    return response