/*
 * Slopbot — the dedicated bot core for media scraping.
 *
 * Scaffold only: nothing imports this yet. The scrape backend lands at
 * checkpoint C4 (see ../CURRENT.md). Setup, limits, and security: docs/slopbot.md.
 */

import { readFileSync } from "node:fs";

export interface SlopbotConfig {
    /** Kill switch. Off unless VESKSLOP_SLOPBOT_ENABLED=1 and a token exists. */
    enabled: boolean;
    /** Bot token. Never logged, never committed. */
    token: string | null;
    /** Application ID, used to render the invite URL. */
    clientId: string | null;
}

interface SlopbotStateFile {
    token?: string;
    clientId?: string;
}

function readStateFile(path: string): SlopbotStateFile {
    try {
        return JSON.parse(readFileSync(path, "utf8")) as SlopbotStateFile;
    } catch {
        return {};
    }
}

/** Read the slopbot settings from the environment, then from the state file. */
export function loadSlopbotConfig(
    env: NodeJS.ProcessEnv = process.env,
    stateFilePath = env.VESKSLOP_SLOPBOT_STATE
): SlopbotConfig {
    const state = stateFilePath ? readStateFile(stateFilePath) : {};
    const token = env.VESKSLOP_SLOPBOT_TOKEN ?? state.token ?? null;
    const clientId = env.VESKSLOP_SLOPBOT_CLIENT_ID ?? state.clientId ?? null;

    return {
        enabled: env.VESKSLOP_SLOPBOT_ENABLED === "1" && token !== null,
        token,
        clientId
    };
}