Improve script to setup labels

- Delete GitHub's default label that will not be used
- Create new labels
- Update color for labels

tools/setup-labels

@@ -17,6 +17,8 @@
 ##
 ##     $ tools/setup-label wking swc-modular-shell
 
+CURL_FLAGS="--silent --fail"
+
 if test $# -lt 2
 then
     echo "Missing parameters."
@@ -28,8 +30,9 @@ fi
 OWNER=$1
 REPO=$2
 GITHUB_URL=https://github.com/${OWNER}/${REPO}
-LABELS=(getting-started working-in-progress discussion)
-COLORS=(fbca04 f7c6c7 5319e7)
+LABELS=(bug defer discussion duplicate enhancement filed-by-newcomer getting-started help-wanted left-as-was suitable-for-newcomer work-in-progress)
+COLORS=(FF0000 66FF00 0000FF 98FB98 E0115F FFFF00 808000 89CFF0 568203 FCE883 545AA7)
+LABELS_TO_DELETE=(help%20wanted invalid question wontfix)
 
 # Test if repository exists
 curl -s --head ${GITHUB_URL} | head -n 1 | grep -q "HTTP/1.[01] [23].."
@@ -46,22 +49,36 @@ read USERNAME
 echo "Your GitHub password:"
 read -s PASSWORD
 
+# Delete labels
+for INDEX in $(seq 0 $((${#LABELS_TO_DELETE[*]} - 1)))
+do
+    # Try to delete label
+    curl ${CURL_FLAGS} -X DELETE \
+        -u ${USERNAME}:${PASSWORD} \
+        "https://api.github.com/repos/${OWNER}/${REPO}/labels/${LABELS_TO_DELETE[${INDEX}]}" > /dev/null
+done
 # Create labels
-for INDEX in $(seq 1 ${#LABELS[*]})
+for INDEX in $(seq 0 $((${#LABELS[*]} - 1)))
 do
-    curl -s -f -X POST \
+    # Try create new label
+    curl ${CURL_FLAGS} -X POST \
         -u ${USERNAME}:${PASSWORD} \
         -d "{\"name\":\"${LABELS[${INDEX}]}\",\"color\":\"${COLORS[${INDEX}]}\"}" \
         "https://api.github.com/repos/${OWNER}/${REPO}/labels" > /dev/null
     if test $? -ne 0
     then
-        echo "Failed when trying to create the label ${LABELS[${INDEX}]}."
-        echo "Probably the label ${LABELS[${INDEX}]} already exists."
-        echo "Please check at ${GITHUB_URL}/labels or run"
-        echo
-        echo "    $ curl -X POST -u ${USERNAME} -d \"{\"name\":\"${LABELS[${INDEX}]}\",\"color\":\"${COLORS[${INDEX}]}\"}\" \"https://api.github.com/repos/${OWNER}/${REPO}/labels\""
-        echo
-        echo "to get more information of the error. If you find a bug"
-        echo "report it at https://github.com/swcarpentry/lesson-template/."
+        # Try to fix label color
+        curl ${CURL_FLAGS} -X PATCH \
+            -u ${USERNAME}:${PASSWORD} \
+            -d "{\"name\":\"${LABELS[${INDEX}]}\",\"color\":\"${COLORS[${INDEX}]}\"}" \
+            "https://api.github.com/repos/${OWNER}/${REPO}/labels/${LABELS[${INDEX}]}" > /dev/null
+        if test $? -ne 0
+        then
+            echo "Failed when trying to create and update the label ${LABELS[${INDEX}]}."
+            echo "Please check at ${GITHUB_URL}/labels"
+            echo ""
+            echo "If you find a bug report it at"
+            echo "https://github.com/swcarpentry/lesson-template/."
+        fi
     fi
 done