/**
 * GitHub-shaped userinfo payload.
 *
 * Mirrors the documented response of `GET https://api.github.com/user`
 * closely enough that Better-Auth / next-auth / passport adapters that
 * accept GitHub IdP responses can run unchanged against the mock.
 *
 * @module
 */

export interface GithubUser {
    readonly id: number;
    readonly login: string;
    readonly email: string;
    readonly avatar_url: string;
    readonly name: string | null;
    readonly node_id: string;
    readonly type: "User";
    readonly site_admin: boolean;
    readonly [key: string]: unknown;
}

export interface PrimedGithubInput {
    readonly id?: number | string;
    readonly login?: string;
    readonly email?: string;
    readonly avatar_url?: string;
    readonly name?: string | null;
    readonly node_id?: string;
    readonly site_admin?: boolean;
    readonly [key: string]: unknown;
}

export function buildGithubUser(input: PrimedGithubInput = {}): GithubUser {
    const id =
        input.id === undefined
            ? 1
            : typeof input.id === "string"
              ? Number.parseInt(input.id, 10) || 0
              : input.id;
    const login = input.login ?? `mock-user-${id}`;
    const email = input.email ?? `${login}@example.test`;
    const avatar_url =
        input.avatar_url ?? `https://avatars.example.test/${login}.png`;
    const name = input.name === undefined ? login : input.name;
    const node_id = input.node_id ?? `MDQ6VXNlcjAwMDA${id}`;
    const site_admin = input.site_admin ?? false;

    const out: GithubUser = {
        ...input,
        id,
        login,
        email,
        avatar_url,
        name,
        node_id,
        type: "User",
        site_admin,
    };
    return Object.freeze(out);
}