openproject_hours: refactor

common/.local/bin/openproject_hours

@@ -1,4 +1,5 @@
 #!/bin/sh
+# vim: noet ci pi sts=0 sw=4 ts=4
 
 year=$1
 month=$2
@@ -8,20 +9,26 @@ API_KEY="<#openproject_apikey#>"
 API_URL="https://op.tralios.de"
 PAGE_SIZE="1000"
 
-filters='[
+days=$(cal "$month" "$year" | awk 'NF {DAYS=$NF} END {print DAYS}')
+
+filters=$(
+	cat <<-EOF
+		[
 		    {
 		        "spentOn": {
 		            "operator": "<>d",
-            "values": ["'"${year}-${month}-01"'", "'"${year}-${month}-30"'"]
+		            "values": ["${year}-${month}-01", "${year}-${month}-${days}"]
 		        }
 		    },
 		    {
 		        "user": {
 		            "operator": "=",
-            "values": ["'"$USER_ID"'"]
+		            "values": ["$USER_ID"]
 		        }
 		    }
-]'
+		]
+	EOF
+)
 
 curl -s \
 	-u "apikey:${API_KEY}" \