Day One

import fs from 'fs'
 
fs.readFile("puzzleInput.txt", 'utf-8', (err, data) => {
  const calibrationValues = data.split('\n')
  console.log({calibrationValues})
  
  const foundValues: [string, string][] = []
  let finalNumber: number = 0
 
 
  /// First digit you find add as first digit AND as last digit
  // As you iterate, overwrite additional digits as the last digit
 
  let nums = ['1', '2', '3', '4', '5', '6', '7', '8', '9']
  for (const lineIndex in calibrationValues){
    foundValues.push(['', ''])
    for (const char of calibrationValues[lineIndex]){
      if (nums.includes(char)){
        if (foundValues[lineIndex][0]){
          foundValues[lineIndex][1] = char // debrief < - we don't even need two
        } else {
          foundValues[lineIndex][0] = char
          foundValues[lineIndex][1] = char
        }
      }
    }
    let additionStep = parseInt(foundValues[lineIndex][0] + foundValues[lineIndex][1])
    if (additionStep) finalNumber += additionStep
  }
  console.log(finalNumber)
})
 
 
/*
 
Eric's observations of my performance:
Freaking out
deep breath
maybe some ritual or meditation
I am refactoring a lot - it's hard to avoid that tendency, but optimizations 
only matter sometimes and especially in an interview setting they don't matter
What matters is optimization at a time complexity level
Another thing I am doing: I'm thinking of multiple problems at once and jumping
around a lot
Writing functions to compartmentalize thinking might be good
Thinking about two things at once and how they relate may be a problem
"Here I'm parsing a number", "Here I'm adding to a sum"
It ultimately hurts me
 
bun is async out of both, could have done await out of the box
List of numbers is hurting my runtime
 
for line 9, I could try to convert into number,
OR I could do same thing with set for faster lookups
 
Get much better at
- File reading like it's my business
- String parsing
 
*/