var fs = require('fs');

// List all files in a directory in Node.js recursively in a synchronous fashion
var walkSync = function(dir, filelist) {
  var files = fs.readdirSync(dir);
  filelist = filelist || [];
  files.forEach(function(file) {
    if (fs.statSync(dir + file).isDirectory()) {
      filelist = walkSync(dir + file + '/', filelist);
    }
    else {
      filelist.push(dir + file);
    }
  });
  return filelist;
};

var findNearestAbsolute = (data, line) => {
  for (let i = line; i > 0; i--) {
    let str = data[i];
    if (str && str.match(/^\//)) {
      return str.trim().replace(/,/g, "|");
    }
  }
  return null
}

var main = () => {
  let files = walkSync("code/");
  let matches = {};
  for (let file of files) {
    const data = fs.readFileSync(file, "utf8");

    if (!data.match(/playsound.*/)) {
      continue
    }

    if(!matches[file]) matches[file] = [];
    const dataArray = data.split("\n");

    let i = 1;
    for (let line of dataArray) {
      i++;
      let m = line.match(/playsound.*/)
      if (m) {
        matches[file].push({line: i, match: m[0], src: findNearestAbsolute(dataArray, i)});
      }
    }
  }

  Object.keys(matches).map(file => {
    let allResults = matches[file];
    allResults.map(obj => {
      obj.params = obj.match.split(",");
      for (var i = 0; i < obj.params.length; i++) {
        obj.params[i] = obj.params[i].trim().replace(/playsound\(/g, "").replace(/\)/g, "");
      }
    })
  });

  // Final loop, spit out a csv
  Object.keys(matches).map(file => {
    let thisFileCsvEntry = "";
    let allResults = matches[file];
    for (let matchObj of allResults) {
      thisFileCsvEntry += `${file},${matchObj.line},${matchObj.src},${matchObj.params.join(",")}\n`;
    }
    fs.appendFileSync("results.csv", thisFileCsvEntry);
  });
}

main();