import { User, UserManager } from 'oidc-client-ts';
import { oidcConfig } from './config';
import { parseOidcError, type AuthError } from './errors';

const userManager = new UserManager(oidcConfig);

export const login = async (): Promise<void> => {
    try {
        await userManager.signinRedirect();
    } catch (error) {
        console.error('Login redirect failed:', error);
        throw parseOidcError(error);
    }
};

export const logout = async (): Promise<void> => {
    try {
        await userManager.signoutRedirect();
    } catch (error) {
        console.error('Logout redirect failed:', error);
        throw parseOidcError(error);
    }
};

export const handleCallback = async (): Promise<User> => {
    try {
        const user = await userManager.signinRedirectCallback();
        return user;
    } catch (error) {
        console.error('Callback handling failed:', error);
        throw parseOidcError(error);
    }
};

export const getUser = async (): Promise<User | null> => {
    try {
        const user = await userManager.getUser();
        return user;
    } catch (error) {
        console.error('Error fetching user:', error);
        return null;
    }
};

export type { AuthError };