import { AuthenticationConfiguration } from '../types';

export const getCookieValue = (name: string): string | null => {
    try {
        const match = document.cookie.match('(^|;)\\s*' + name + '\\s*=\\s*([^;]+)');
        return match ? match.pop()! : null;
    } catch (error) {
        return null;
    }
};

export const setCookieValue = (name: string, value: string): void => {
    document.cookie = `${name}=${value}; Path=/;`;
};

export const logout = (): void => {
    setCookieValue('authToken', '');
    setCookieValue('refreshToken', '');
};

export const refreshAccessToken = async (authConfig?: AuthenticationConfiguration): Promise<string> => {
    if (!authConfig) {
        throw new Error('No auth configuration available');
    }

    const refreshToken = getCookieValue('refreshToken');
    if (!refreshToken) {
        throw new Error('You are not logged in');
    }

    const response = await fetch(`${authConfig.redirectUrl}?grant_type=refresh_token&refresh_token=${refreshToken}`, {
        method: 'GET',
        credentials: 'include',
    });

    if (!response.ok) {
        logout();
        throw new Error('Failed to refresh token');
    }

    const data = await response.json();
    setCookieValue('authToken', data.access_token);
    return data.access_token;
};