import fs from "fs";
import path from "path";

export type Settings = {
    replicateApiToken: string;
    jigsawApiKey: string;
    modelVersion: string;
    replicateEnabled: boolean;
    adminPasswordHash: string;
};

const DEFAULT_SETTINGS: Settings = {
    replicateApiToken: process.env["REPLICATE_API_TOKEN"] ?? "",
    jigsawApiKey: process.env["JIGSAWSTACK_API_KEY"] ?? "",
    modelVersion: "jigsawstack/text-translate:454df4c49941c05dea05175bd37686d0872c73c1f9366d1c2505db32ade52a89",
    replicateEnabled: false,
    adminPasswordHash: process.env["ADMIN_PASSWORD"] ?? "admin"
};

const SETTINGS_PATH = path.join(process.cwd(), "data", "settings.json");

function ensureDataDir() {
    const dir = path.dirname(SETTINGS_PATH);
    if (!fs.existsSync(dir)) {
        fs.mkdirSync(dir, { recursive: true });
    }
}

export function readSettings(): Settings {
    try {
        ensureDataDir();
        if (!fs.existsSync(SETTINGS_PATH)) {
            return { ...DEFAULT_SETTINGS };
        }
        const raw = fs.readFileSync(SETTINGS_PATH, "utf-8");
        return { ...DEFAULT_SETTINGS, ...JSON.parse(raw) };
    } catch {
        return { ...DEFAULT_SETTINGS };
    }
}

export function writeSettings(updates: Partial<Settings>): Settings {
    ensureDataDir();
    const current = readSettings();
    const next = { ...current, ...updates };
    fs.writeFileSync(SETTINGS_PATH, JSON.stringify(next, null, 2), "utf-8");
    return next;
}