default to current day and curl puzzle name from the site

getday.sh

@@ -7,21 +7,21 @@ if [ -z "$session" ]; then
 fi
 
 if [ -z "$1" ]; then
-  printf "missing year\n"
-  exit 1
+  year=$(date +"%Y")
 else
   year="$1"
 fi
 
 if [ -z "$2" ]; then
-  printf "missing day\n"
-  exit 1
+  day=$(date +"%_d")
 else
   day="$2"
 fi
 
 mkdir -p "$(printf "AOC%s/input%s" "$year" "$year")"
 
+puzzleName=$(curl -s https://adventofcode.com/"$year"/day/"$day" | sed -nr 's/.*--- Day [[:digit:]]+: (.*) ---.*/\1/p')
+
 curl -s https://adventofcode.com/"$year"/day/"$day"/input \
   --cookie "session=$session" \
   -o "$(printf "AOC%s/input%s/day%02d.in" "$year" "$year" "$day")"
@@ -32,5 +32,5 @@ class=$(printf "AOC%s/Day%02d.cs" "$year" "$day")
 longDay=$(printf "%02d" "$day")
 
 if [ ! -f "$class" ]; then
-  sed -e "s/Q/$day/g" -e "s/XX/$longDay/g" -e "s/YYYY/$year/g" DayXX.cs.txt >"$class"
+  sed -e "s/Q/$day/g" -e "s/XX/$longDay/g" -e "s/YYYY/$year/g" -e "s/Puzzle Name/$puzzleName/g" DayXX.cs.txt >"$class"
 fi