import fs from "fs";
import fetch from "node-fetch";

/** ==================== Helper ==================== */
export const writeToFile = (data, filename) => {
  fs.writeFile(filename, data, (err) => {
    if (err) {
      console.log(err);
    } else {
      console.log(`Wrote to ${filename}`);
    }
  });
};

export const asyncForEach = async (array, callback) => {
  for (let index = 0; index < array.length; index++) {
    await callback(array[index], index, array);
  }
};

export const runInputOutputs = async ({ IOs, ignoreProperties }) => {
  let deployedContracts = {};

  await asyncForEach(IOs, async (item, i) => {
    const { input, output, mappedKey } = item;

    const data = await fetch(input).then((res) => res.text());

    const json = JSON.parse(data);

    if (i <= 0) {
      deployedContracts = json;
    }

    await asyncForEach(Object.keys(json), async (key) => {
      if (ignoreProperties.includes(key)) {
        delete json[key];
      }
    });

    if (mappedKey !== null) {
      json.address = deployedContracts[mappedKey];
    }

    writeToFile(JSON.stringify(json, null, 2), output);
  });
};