#!/usr/bin/env node
"use strict";

const fs = require("fs");
const minimist = require("minimist");
const jscodefmt = require("../index");

const argv = minimist(process.argv.slice(2), {
  boolean: ["write", "flow-parser", "bracket-spacing", "single-quote", "trailing-comma"],
  default: {
    "bracket-spacing": true
  }
});

const filenames = argv["_"];
const write = argv["write"];

if (!filenames.length) {
  console.log(
    "Usage: prettier [opts] [filename]\n\n" +
    "Available options:\n" +
    "  --write              Edit the file in-place (beware!)\n" +
    "  --print-width <int>  Specify the length of line that the printer will wrap on. Defaults to 80.\n" +
    "  --tab-width <int>    Specify the number of spaces per indentation-level. Defaults to 2.\n" +
    "  --flow-parser        Use the flow parser instead of babylon\n" +
    "  --single-quote       Use single quotes instead of double\n" +
    "  --trailing-comma     Print trailing commas wherever possible\n" +
    "  --bracket-spacing    Put spaces between brackets. Defaults to true, set false to turn off"
  );
  process.exit(1);
}

filenames.forEach(filename => {
  fs.readFile(filename, "utf8", (err, input) => {
    if (err) {
      console.error("Unable to read file: " + filename + "\n" + err);
      // Don't exit the process if one file failed
      process.exitCode = 2;
      return;
    }

    let output;
    try {
      output = jscodefmt.format(input, {
        printWidth: argv["print-width"],
        tabWidth: argv["tab-width"],
        bracketSpacing: argv["bracket-spacing"],
        useFlowParser: argv["flow-parser"],
        singleQuote: argv["single-quote"],
        trailingComma: argv["trailing-comma"]
      });
    } catch (e) {
      process.exitCode = 2;
      console.error(e);
      return;
    }

    if (write) {
      fs.writeFile(filename, output, "utf8", err => {
        if (err) {
          console.error("Unable to write file: " + filename + "\n" + err);
          // Don't exit the process if one file failed
          process.exitCode = 2;
        }
      });
    } else {
      console.log(output);
    }
  });
});