'use strict';

const fs = require('fs');
const _ = require('lodash');

if (process.argv.length !== 3) {
  console.log(`Usage: node ${process.argv[1]} FILENAME`);
  process.exit(1);
}

const file = fs.readFileSync(process.argv[2], 'utf-8');

// {
//   'context': {
//     '_X.': {
//       '1': ['App', 'args', 4], ...
//     }, ...
//   }, ...
// }
//
let dp = {};

function addApp (c, e, p, app, args, usage) {
  if (!dp[c]) {
    dp[c] = {};
  }

  if (!dp[c][e]) {
    dp[c][e] = {};
  }

  dp[c][e][p] = [app, args, usage];
}

let context = '---';
let exten;

for (let line of file.split('\n')) {
  // new extension starts
  let matches = line.match(/'([^']+)'(?: \(CID match '[^']*'\))? =>\s+(\d+)\.\s(\w+)\((.*)\) (\d+)/);
  if (matches) {
    // extension matches[1] is not used
    // priority matches[2] is not used
    let prio, app, args, usage;
    [, exten, prio, app, args, usage] = matches;
    addApp(context, exten, prio, app, args, usage);
    continue;
  }

  // next line describing extension
  matches = line.match(/^\s+(?:\[\w+\])?\s+(\d+)\.\s(\w+)\((.*)\) (\d+)/);
  if (matches) {
    let [, prio, app, args, usage] = matches;
    addApp(context, exten, prio, app, args, usage);
    continue;
  }

  // start of a new context
  matches = line.match(/^\[ Context '([^']+)' created by/);
  if (matches) {
    context = matches[1];
    continue;
  }
}

const colors = require('ansi-256-colors');
function getColor(usage) {

  let fg = [0, 0, 0];
  let bg;

  if (usage == 0) {
    bg = [3, 2, 2];
  } else if (usage > 0 && usage < 10 ) {
    bg = [1, 3, 1];
  } else if (usage > 10) {
    bg = [1, 5, 1];
  }

  return function (string) {
    return colors.fg.getRgb.apply(colors.fg, fg) + colors.bg.getRgb.apply(colors.bg, bg) + string + colors.reset;
  }
}

let covered = 0, uncovered = 0;

_.each(dp, (extens, context) => {
  /* // skip [..._<c>] generated contexts
  if (context.match(/\d+$/)) {
    return;
  }
  */
  console.log(`[${context}]`);
  _.each(extens, (prios, exten) => {
    _.each(prios, ([app, data, usage], prio) => {

      usage = +usage;
      if (usage) {
        covered++;
      } else {
        uncovered++;
      }

      console.log(getColor(usage)(`exten => ${exten},${prio},${app}(${data})`));
    });
  });
  console.log('');
});

console.log(`Covered: ${covered}/${covered + uncovered}, ${Math.floor(100*covered / (covered + uncovered))}%`);