cli.ts

import { Select } from "./deps.ts";

const HOME = Deno.env.get("HOME");
const profileRegex = /\[profile .*]/g;
const bracketsRemovalRegx = /(\[profile )|(\])/g;
const defaultProfileChoice = "default";

const awsConfigFile = `${HOME}/.aws/config`;
const awsSwitchConfig = `${HOME}/.aws-switch.sh`;

// Check if the aws config file exists
try {
  if (!Deno.statSync(awsConfigFile).isFile) {
    console.error(`${awsConfigFile} does not exist`);
    Deno.exit(1);
  }
} catch {
  console.error(`${awsConfigFile} does not exist`);
  Deno.exit(1);
}

const awsConfig = Deno.readTextFileSync(awsConfigFile);

const matches = awsConfig.match(profileRegex);

if (!matches) {
  console.log("No profiles found.");
  console.log("Refer to this guide for help on setting up a new AWS profile:");
  console.log(
    "https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html"
  );

  Deno.exit(1);
}

const profiles = matches.map((match) => {
  return match.replace(bracketsRemovalRegx, "");
});

if (!profiles.includes(defaultProfileChoice)) {
  profiles.push(defaultProfileChoice);
}

const ret = await Select.prompt({
  message: "Choose a profile",
  options: profiles,
  default: Deno.env.get("AWS_PROFILE") || defaultProfileChoice,
});

console.log(ret);

// Write to file
Deno.writeTextFileSync(awsSwitchConfig, `export AWS_PROFILE=${ret}`);

Deno.exit(0);