feat: refactor option validation to list-based approach and add delete+hide_and_recreate check

Co-authored-by: marocchino <128431+marocchino@users.noreply.github.com>

__tests__/main.test.ts

@@ -115,7 +115,7 @@ describe("run", () => {
     mockConfig.recreate = true
     const {core} = await runMain()
     expect(core.setFailed).toHaveBeenCalledWith(
-      "delete and recreate cannot be both set to true",
+      "delete and recreate cannot be set to true simultaneously",
     )
   })
 
@@ -124,7 +124,7 @@ describe("run", () => {
     mockConfig.onlyCreateComment = true
     const {core} = await runMain()
     expect(core.setFailed).toHaveBeenCalledWith(
-      "delete and only_create cannot be both set to true",
+      "delete and only_create cannot be set to true simultaneously",
     )
   })
 
@@ -133,7 +133,7 @@ describe("run", () => {
     mockConfig.hideOldComment = true
     const {core} = await runMain()
     expect(core.setFailed).toHaveBeenCalledWith(
-      "delete and hide cannot be both set to true",
+      "delete and hide cannot be set to true simultaneously",
     )
   })
 
@@ -151,7 +151,16 @@ describe("run", () => {
     mockConfig.hideAndRecreate = true
     const {core} = await runMain()
     expect(core.setFailed).toHaveBeenCalledWith(
-      "hide and hide_and_recreate cannot be both set to true",
+      "hide and hide_and_recreate cannot be set to true simultaneously",
+    )
+  })
+
+  test("fails when deleteOldComment and hideAndRecreate are both true", async () => {
+    mockConfig.deleteOldComment = true
+    mockConfig.hideAndRecreate = true
+    const {core} = await runMain()
+    expect(core.setFailed).toHaveBeenCalledWith(
+      "delete and hide_and_recreate cannot be set to true simultaneously",
     )
   })
 

src/main.ts

@@ -46,26 +46,22 @@ async function run(): Promise<undefined> {
       throw new Error("Either message or path input is required")
     }
 
-    if (deleteOldComment && recreate) {
-      throw new Error("delete and recreate cannot be both set to true")
-    }
-
-    if (deleteOldComment && onlyCreateComment) {
-      throw new Error("delete and only_create cannot be both set to true")
-    }
-
-    if (deleteOldComment && hideOldComment) {
-      throw new Error("delete and hide cannot be both set to true")
+    const exclusiveModes: [string, boolean][] = [
+      ["delete", deleteOldComment],
+      ["recreate", recreate],
+      ["only_create", onlyCreateComment],
+      ["hide", hideOldComment],
+      ["hide_and_recreate", hideAndRecreate],
+    ]
+    const enabledModes = exclusiveModes.filter(([, flag]) => flag).map(([name]) => name)
+    if (enabledModes.length > 1) {
+      throw new Error(`${enabledModes.join(" and ")} cannot be set to true simultaneously`)
     }
 
     if (onlyCreateComment && onlyUpdateComment) {
       throw new Error("only_create and only_update cannot be both set to true")
     }
 
-    if (hideOldComment && hideAndRecreate) {
-      throw new Error("hide and hide_and_recreate cannot be both set to true")
-    }
-
     const octokit = github.getOctokit(githubToken)
     const previous = await findPreviousComment(octokit, repo, pullRequestNumber, header)