Move wrapper-validation into common setup code

sources/src/wrapper-validation/wrapper-validator.ts

@@ -0,0 +1,23 @@
+import * as core from '@actions/core'
+import {WrapperValidationConfig} from '../configuration'
+import {findInvalidWrapperJars} from './validate'
+import {JobFailure} from '../errors'
+
+export async function validateWrappers(config: WrapperValidationConfig, workspaceRoot: string): Promise<void> {
+    if (!config.doValidateWrappers()) {
+        return // Wrapper validation is disabled
+    }
+
+    const allowedChecksums = process.env['ALLOWED_GRADLE_WRAPPER_CHECKSUMS']?.split(',') || []
+    const result = await findInvalidWrapperJars(workspaceRoot, 0, config.allowSnapshotWrappers(), allowedChecksums)
+    if (result.isValid()) {
+        await core.group('All Gradle Wrapper jars are valid', async () => {
+            core.info(result.toDisplayString())
+        })
+    } else {
+        core.info(result.toDisplayString())
+        throw new JobFailure(
+            `Gradle Wrapper Validation Failed!\n  See https://github.com/gradle/actions/blob/main/docs/wrapper-validation.md#reporting-failures\n${result.toDisplayString()}`
+        )
+    }
+}