Add script to run puzzle

Makefile

@@ -7,3 +7,7 @@ login:
 # initialize today's puzzle
 init:
 	./scripts/init.sh
+
+# run today's puzzle
+run:
+	./scripts/run.sh

README.md

@@ -26,3 +26,5 @@ The structure is generic enough, but built for macOS (although that specific log
 2. To login using a session cookie from the Advent of Code website, run `make login`
 3. To initialize today's puzzle run `make init`
    * To initialize a specific puzzle, run `AOC_YEAR=2020 AOC_MONTH=12 AOC_DAY=24 make init`
+4. To run today's puzzle run `make run`
+    * To run a specific puzzle, run `AOC_YEAR=2020 AOC_MONTH=12 AOC_DAY=24 make run`

scripts/run.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+
+set -e
+
+export PATH="/usr/local/opt/[email protected]/bin:$PATH"
+
+year="${AOC_YEAR:-$(date +%Y)}"
+month="${AOC_MONTH:-$(date +%m)}"
+day="${AOC_DAY:-$(date +%d)}"
+
+if [[ ! "$month" -eq 12 ]]; then
+  echo "It's not december quite yet. If you wish to run a previous puzzle"
+  echo "specify AOC_YEAR, AOC_MONTH and AOC_DAY"
+  exit 1
+fi
+
+if [[ ! -d "$year/$day" ]]; then
+  echo "Cannot find a puzzle in $year/$day. Have you forgot to initialize it?"
+  exit 1
+fi
+
+main_files="$(find "$year/$day" -depth 1 -iname "main*")"
+for file in $main_files; do
+  name="$(basename "$file")"
+  case "${name##*.}" in
+    "go")
+      go run "$file"
+      ;;
+    "ts")
+      NO_COLOR=1 deno run --quiet --allow-read "$file"
+      ;;
+    "py")
+      python3 "$file"
+      ;;
+    *)
+      echo "unsupported $file"
+  esac
+done