Reports hours spent on project from 7Am morning until now. Information about time is gathered from commit messages containing eg. `#1h20m` or `#20m` or `#1h`

git_report.js

const { exec } = require('child_process');


const Reset = "\x1b[0m"

const FgBlack = "\x1b[30m"
const FgRed = "\x1b[31m"
const FgGreen = "\x1b[32m"
const FgYellow = "\x1b[33m"
const FgBlue = "\x1b[34m"
const FgMagenta = "\x1b[35m"
const FgCyan = "\x1b[36m"
const FgWhite = "\x1b[37m"

// 
exec(`git branch`, (err, stdout, stderr) => {
  if (err) {
    // node couldn't execute the command
    console.log(`${stderr}`);
    return;
  }

  const gitBranch = stdout.toString().split("\n")[0].substr(2)

  exec(`git log --pretty=format:'%h -%d %s (%ad) <%an>' --date=iso`, (err, stdout, stderr) => {
    if (err) {
      // node couldn't execute the command
      console.log(`${stderr}`);
      return;
    }
    const gitInfo = `On branch: ${FgGreen}${gitBranch}${Reset}`
    const time = totalMinutesWorked(stdout.toString())    
    console.log(`You've worked: ${FgYellow}${time.hours}h${time.minutes}m${Reset}\nTotal minutes: ${FgCyan}${time.totalMinutes}m${Reset}\n${gitInfo}`)
    // console.log(time)
  });
});


function getDateOfCommit(gitlogLine) {
  const regexDate = /(\d{4})-0?(\d+)-0?(\d+)[T ]0?(\d+):0?(\d+):0?(\d+)/gmi

  return regexDate.exec(gitlogLine);
}

/**
 * 
 * @param {String} commitLog 
 * @returns {Object} 
 */
function totalMinutesWorked(commitLog) {

  const hm =  /(#(?<h>\d+)h(?<m>\d+)m)/gmi
  const m = /(#(?<m>\d+)m)/gmi
  const h = /(#(?<h>\d+)h)/gmi


  const regexes = [
    { name: 'hm', regex: hm },
    { name: 'm', regex: m },
    { name: 'h', regex: h }
  ]
  
  let totalMinutes = 0
  
  const now = new Date();
  
  const today7Am = new Date().setHours(7); // set to 7Am

  for (const line of commitLog.split('\n')) {

    const commitDate = new Date(getDateOfCommit(line)[0])
    if (commitDate < today7Am) {
      continue;
    }
  

    for (const r of regexes) {
      const o = r.regex.exec(line);
      if (o !== null) {
        if(r.name === 'hm') {  
          const hours = Number(o.groups.h)
          const mins = Number(o.groups.m)
          totalMinutes += hours * 60 + mins
        }
        else if (r.name === 'm') {
          const mins = Number(o.groups.m)
          totalMinutes += mins
        }
        else if (r.name === 'h') {
          const hours = Number(o.groups.h)
          totalMinutes += hours * 60
        }

        break;
      }
    }
  }

  function prettyFormat(minutes) {
    const hours = Math.floor(minutes / 60);

    return {
      hours,
      minutes: minutes - hours * 60
    }
  }

  return {
    totalMinutes,
    ...prettyFormat(totalMinutes)
  }
}