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

import WiFi from "./wifi";

export default {
  help: `Configure ObnizOS network via Wi-Fi from devices.

 [configurations]
 -c --config      configuration file path. If specified obniz-cli proceed settings following file like setting wifi SSID/Password.
  `,
  async execute(args: any) {
    let configs: any;
    // Network Setting
    const configPath: any = args.c || args.config;
    if (configPath) {
      const filepath = path.isAbsolute(configPath) ? configPath : path.join(process.cwd(), configPath);
      if (!fs.existsSync(filepath)) {
        throw new Error(`config file ${filepath} does not exist!!`);
      }
      const jsonString = fs.readFileSync(filepath, { encoding: "utf8" });
      let json: any = null;
      try {
        json = JSON.parse(jsonString);
      } catch (e) {
        console.error(`Can't read config file as json`);
        throw e;
      }
      configs = json;
    }
    if (!configs) {
      // no configuration provided
      console.log(chalk.red(`No configration found. exit.`));
      return;
    }

    const duplicate: boolean = !(args.duplicate === "false");

    // Init Wi-Fi
    const wifi = new WiFi({
      stdout: (text: string) => {
        process.stdout.write(text);
      },
      onerror: (err: any) => {
        throw new Error(`${err}`);
      },
    });
    await wifi.setNetwork(configs, duplicate);
  },
};