#! /usr/bin/env node

import * as glob from "multiple-glob";
import * as fs from "fs";
import * as touch from "touch";
import * as shell from "shelljs";

let checksum: number;
if (fs.existsSync(process.argv[2])) {
  checksum = fs.lstatSync(process.argv[2]).mtimeMs;
} else {
  checksum = 0;
}

if (process.env.NODE_ENV === "debug") {
  console.log(
    "CHECK " + JSON.stringify(process.argv.slice(3, -1), undefined, 2)
  );
}
glob(process.argv.slice(3, -1), (err, files: string[]) => {
  if (err) {
    console.log("ERR", err);
  } else {
    let stime = files
      .map(f => {
        if (process.env.NODE_ENV === "debug") {
          console.log("FILE ", f);
        }
        return { f: f, mttime: fs.lstatSync(f).mtimeMs };
      })
      .reduce(
        (prev, v) => {
          if (prev) {
            if (prev.mttime > v.mttime) {
              return prev;
            }
          }
          return v;
        },
        { f: "", mttime: 0 }
      ).mttime;
    if (process.env.NODE_ENV === "debug") {
      console.log(`STIME ${stime} > ${checksum}`);
    }
    if (stime > checksum && stime > 0) {
      if (shell.exec(process.argv.slice(-1)[0]).code === 0) {
        touch(process.argv[2]);
      } else {
        shell.exit(1);
      }
    }
  }
});