Update documentation

README.md

@@ -66,30 +66,40 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - name: Setpost title and date
+      - name: Set post title and dates
         run: |
           MONTH=$(date +%m)
           YEAR=$(date +%Y)
+
+          declare -A SEASONS=(
+            ["03"]="Winter"
+            ["06"]="Spring"
+            ["09"]="Summer"
+            ["12"]="Fall"
+          )
+
+          set_env_vars() {
+            local season=$1
+            local start_date=$2
+            local end_date=$3
+
+            echo "POST_TITLE=${YEAR} ${season}" >> $GITHUB_ENV
+            echo "START_DATE=${start_date}" >> $GITHUB_ENV
+            echo "END_DATE=${end_date}" >> $GITHUB_ENV
+          }
+
           case $MONTH in
-            03)
-              echo "POST_TITLE=$(($YEAR - 1))/${YEAR} Winter" >> $GITHUB_ENV
-              echo "START_DATE=$(($YEAR - 1))-12-21" >> $GITHUB_ENV
-              echo "END_DATE=${YEAR}-03-20" >> $GITHUB_ENV
+            "03")
+              set_env_vars ${SEASONS[$MONTH]} "$(($YEAR - 1))-12-21" "${YEAR}-03-20"
               ;;
-            06)
-              echo "POST_TITLE=${YEAR} Spring" >> $GITHUB_ENV
-              echo "START_DATE=${YEAR}-03-21" >> $GITHUB_ENV
-              echo "END_DATE=${YEAR}-06-20" >> $GITHUB_ENV
+            "06")
+              set_env_vars ${SEASONS[$MONTH]} "${YEAR}-03-21" "${YEAR}-06-20"
               ;;
-            09)
-              echo "POST_TITLE=${YEAR} Summer" >> $GITHUB_ENV
-              echo "START_DATE=${YEAR}-06-21" >> $GITHUB_ENV
-              echo "END_DATE=${YEAR}-09-20" >> $GITHUB_ENV
+            "09")
+              set_env_vars ${SEASONS[$MONTH]} "${YEAR}-06-21" "${YEAR}-09-20"
               ;;
-            12)
-              echo "POST_TITLE=${YEAR} Fall" >> $GITHUB_ENV
-              echo "START_DATE=${YEAR}-09-21" >> $GITHUB_ENV
-              echo "END_DATE=${YEAR}-12-20" >> $GITHUB_ENV
+            "12")
+              set_env_vars ${SEASONS[$MONTH]} "${YEAR}-09-21" "${YEAR}-12-20"
               ;;
           esac
       - name: Write scheduled post