fix

Author: Naka Masato

src/main.ts

@@ -42,13 +42,11 @@ async function run() {
       configPath
     );
     for (const [label, regexs] of labelTitleRegex.entries()) {
-      core.debug(`[labelTitleRegex] processing ${label}`);
-      for (const regex of regexs) {
-        core.info(`label: ${label}, regex: ${regex}`);
-        if (prTitle != undefined && regex.test(prTitle)) {
-          core.info(`in`);
-          labels.push(label);
-        }
+      core.debug(`processing ${label}`);
+      if (checkRegexs(prTitle, regexs)) {
+        labels.push(label);
+      } else if (pullRequest.labels.find(l => l.name === label)) {
+        labelsToRemove.push(label);
       }
     }
 
@@ -91,10 +89,10 @@ function getPrNumber(): number | undefined {
   return pullRequest.number;
 }
 
-function getPrTitle(): string | undefined {
+function getPrTitle(): string {
   const pullRequest = github.context.payload.pull_request;
   if (!pullRequest) {
-    return undefined;
+    return '';
   }
 
   return pullRequest.title;
@@ -200,11 +198,9 @@ function getLabelTitleRegexMapFromObject(
       for (const label in configObject["title"]) {
         const val = configObject["title"][label];
         if (typeof val === "string") {
-          titleRegexs.set(label, [new RegExp(val)]);
-          core.info(`label: ${label}, ${val}, ${titleRegexs}`)
+          titleRegexs.set(label, [new RegExp(val, 'i')]);
         } else if (val instanceof Array) {
-          core.info(`label: ${label}, ${val}`)
-          titleRegexs.set(label, val.map(regexStr => new RegExp(regexStr)) );
+          titleRegexs.set(label, val.map(regexStr => new RegExp(regexStr, 'i')) );
         } else {
           throw Error(
             `found unexpected type for label ${label} (should be string or array of regex)`
@@ -245,6 +241,18 @@ function checkGlobs(
   return false;
 }
 
+function checkRegexs(
+  prTitle: string,
+  regexs: RegExp[]
+): boolean {
+  for (const regex of regexs) {
+    if (regex.test(prTitle)) {
+      return true;
+    }
+  }
+  return false;
+}
+
 function isMatch(changedFile: string, matchers: IMinimatch[]): boolean {
   core.debug(`    matching patterns against file ${changedFile}`);
   for (const matcher of matchers) {