import { readFileSync, existsSync, writeFileSync } from "fs";
import { resolve } from "path";

export interface FinanceSettings {
  refreshIntervalSeconds: number;
}

const SETTINGS_PATH = resolve(process.cwd(), "data", "finance-settings.json");

export function getFinanceSettings(): FinanceSettings {
  if (!existsSync(SETTINGS_PATH)) {
    return { refreshIntervalSeconds: 60 };
  }
  try {
    const raw = readFileSync(SETTINGS_PATH, "utf-8");
    const parsed = JSON.parse(raw) as Partial<FinanceSettings>;
    return {
      refreshIntervalSeconds: Math.max(
        5,
        Math.min(3600, parsed.refreshIntervalSeconds ?? 60)
      ),
    };
  } catch {
    return { refreshIntervalSeconds: 60 };
  }
}

export function setFinanceSettings(settings: FinanceSettings): void {
  const validated = {
    refreshIntervalSeconds: Math.max(
      5,
      Math.min(3600, settings.refreshIntervalSeconds ?? 60)
    ),
  };
  writeFileSync(SETTINGS_PATH, JSON.stringify(validated, null, 2), "utf-8");
}