import { errorMessage } from "./errors.js";
import { ensureUserData, ensureUserDataDir, userDataPath } from "./user-data.js";
import { readJsonObject, sortedByNumericKeys, writeJsonAtomic } from "./json-file.js";

export function createJsonStore(fileName: string): {
  get(): Record<string, string>;
  set(store: Record<string, string>): void;
} {
  const file = userDataPath(fileName);
  return {
    get() {
      ensureUserData(fileName);
      const parsed = readJsonObject(file, (err) => console.error(`Failed to read ${fileName}: ${errorMessage(err)}`));
      if (parsed === null) return {};
      return Object.fromEntries(
        Object.entries(parsed).filter(([, value]) => typeof value === "string"),
      ) as Record<string, string>;
    },
    set(store) {
      ensureUserDataDir();
      writeJsonAtomic(file, sortedByNumericKeys(store));
    },
  };
}