import std/[streams, sequtils, strutils, sugar, strformat, times, httpclient, os, options] const YEAR = getEnv("AOC_YEAR", "2021").parseInt() proc getCookie(): string = "~/.advent-of-code-auth-cookie".expandTilde().readFile() proc getCacheDir(): string = joinPath(expandTilde("~/.cache"), fmt"/aoc{YEAR}") proc inputFilePath(day: int): string = joinPath(getCacheDir(), fmt"{day}.input") proc fetchInput(day: int, filePath: string): StringStream = let client = newHttpClient() client.headers = {"cookie": getCookie()}.newHttpHeaders() let content = client.getContent(fmt"https://adventofcode.com/{YEAR}/day/{day}/input") filePath.writeFile(content) content.newStringStream() proc inputStream*(day: int): Stream = getCacheDir().createDir() let cachedFile = day.inputFilePath() if not cachedFile.fileExists(): day.fetchInput(cachedFile) else: openFileStream(cachedFile) proc toInts*(s: seq[string]): seq[int] = s.map(parseInt) proc loadInputText*(day: int): string = day.inputFilePath().readFile().strip() proc loadInput*(day: int): seq[string] = result = collect: for l in day.inputStream().lines(): l template time*(i: string, body: untyped): untyped = let start = cpuTime() body let stop = cpuTime() let diff = $((stop - start) * 1000) echo i & " took " & diff & "ms to calculate solution" when not defined(release): echo "NOTE: This is not a real measurement of performance. Compile in release mode with -d:release for best performance." # jkp: {(stop - start) * 1000} ms to calculate solution: {result}" proc doDay*[T]( day: int, inputLoader: int -> T, part1: T -> int, part2: T -> int, testInput: T, expectedPart1: int, expectedPart2: int): void = time(&"day {day} part 1"): echo day.inputLoader().part1() time(&"day {day} part 2"): echo day.inputLoader().part2() when not defined(release): doAssert testInput.part1() == expectedPart1 doAssert testInput.part2() == expectedPart2 proc reduce*[T](s: openArray[T], op: (T, T) -> T, init: T): T = result = init for n in s: result = op(result, n)