1 files changed, 55 insertions, 0 deletions
diff --git a/bin/fetch_input.sh b/bin/fetch_input.sh
new file mode 100755
index 0000000..76bdddd
--- /dev/null
+++ b/bin/fetch_input.sh
@@ -0,0 +1,55 @@
+#!/bin/sh -e
+
+COOKIES="${HOME}/.adventofcode.json"
+
+YEAR=${YEAR:-$(date +%Y)}
+DAY=${DAY:-$(TZ=EST date '+%d')}
+DEC=$(echo "${DAY}" | sed 's/^0//')
+
+MODE="wget"
+
+# https://stackoverflow.com/q/21919156/how-do-i-copy-cookies-from-chrome
+SESSION=$(jq < "${COOKIES}" '."session-cookie"')
+
+concat() {
+  local part
+
+  for part in "$@"; do
+    printf '%s' "${part}"
+  done
+}
+
+authenticated_wget() {
+  wget \
+      --server-response \
+      --header "Cookie: session=${SESSION}" \
+      "${@}"
+}
+
+if [ "${MODE}" = 'wget' ]; then
+  cd "${YEAR}"
+  cd 'rust'
+  mkdir "day${DAY}" || :
+  cd "day${DAY}"
+
+  # https://stackoverflow.com/q/21919156/how-do-i-copy-cookies-from-chrome
+  SESSION=$(jq < "${COOKIES}" '."session-cookie"' | tr -d '"')
+
+  [ -e "input" ] || {
+    mkdir 'input'
+    SETTINGS=$(authenticated_wget --output-document='-' \
+        "https://adventofcode.com/${YEAR}/settings")
+    USERNAME=$(echo "${SETTINGS}" |
+       sed -n 's#.*display_name.*checked.*<span>\(.*\)</span>.*#\1#p')
+    authenticated_wget --output-document "input/${USERNAME}" \
+       "https://adventofcode.com/${YEAR}/day/${DEC}/input"
+  }
+elif [ "${MODE}" = 'aocdl' ]; then
+  # One could possibly use the golang implemenation instead of wget:
+  # https://github.com/GreenLightning/advent-of-code-downloader
+  #
+  # It has more features, but it is always a hassle to install extra things.
+  #
+  # go get github.com/GreenLightning/advent-of-code-downloader/aocdl
+  ~/.go/bin/aocdl -output "{{.Year}}/rust/{{.Day}}"
+fi