Validate token before uploading anything to Modrinth

Closes #38

build.gradle

@@ -2,7 +2,7 @@ plugins {
     id 'com.gradle.plugin-publish' version '1.1.0'
 }
 
-version = '2.6.0'
+version = '2.7.0'
 group = 'com.modrinth.minotaur'
 archivesBaseName = 'Minotaur'
 description = 'Modrinth plugin for publishing builds to the website!'

src/main/java/com/modrinth/minotaur/TaskModrinthSyncBody.java

@@ -16,9 +16,7 @@
 
 import java.util.regex.Pattern;
 
-import static com.modrinth.minotaur.Util.getExtension;
-import static com.modrinth.minotaur.Util.getUploadEndpoint;
-import static com.modrinth.minotaur.Util.resolveId;
+import static com.modrinth.minotaur.Util.*;
 
 /**
  * A task used to communicate with Modrinth for the purpose of syncing project body with, for example, a README.
@@ -57,6 +55,7 @@ public void apply() {
             final HttpClient client = Util.createHttpClient();
             final HttpPatch patch = new HttpPatch(getUploadEndpoint(this.getProject()) + "project/" + resolveId(this.getProject(), extension.getProjectId().get()));
 
+            validateToken(this.getProject());
             patch.addHeader("Authorization", extension.getToken().get());
 
             JsonObject data = new JsonObject();

src/main/java/com/modrinth/minotaur/TaskModrinthUpload.java

@@ -179,6 +179,7 @@ public void upload(List<File> files) throws IOException {
         final HttpClient client = createHttpClient();
         final HttpPost post = new HttpPost(getUploadEndpoint(this.getProject()) + "version");
 
+        validateToken(this.getProject());
         post.addHeader("Authorization", extension.getToken().get());
 
         final MultipartEntityBuilder form = MultipartEntityBuilder.create();

src/main/java/com/modrinth/minotaur/Util.java

@@ -176,4 +176,29 @@ static File resolveFile(Project project, Object in) {
         // None of the previous checks worked. Fall back to Gradle's built-in file resolution mechanics.
         return project.file(in);
     }
+
+    /**
+     * Validates that the token provided in the extension is valid.
+     *
+     * @param project Gradle project
+     */
+    static void validateToken(Project project) throws IOException {
+        if (System.getenv("GITHUB_ACTIONS") != null) {
+            return;
+        }
+
+        HttpClient client = createHttpClient();
+        Gson gson = createGsonInstance();
+        HttpGet get = new HttpGet(String.format("%suser", getUploadEndpoint(project)));
+        get.addHeader("Authorization", getExtension(project).getToken().get());
+        HttpResponse response = client.execute(get);
+
+        int code = response.getStatusLine().getStatusCode();
+        if (code != 200) {
+            ResponseError errorInfo = gson.fromJson(EntityUtils.toString(response.getEntity()), ResponseError.class);
+            String error = String.format("Failed to validate Modrinth token! Status: %s Error: %s Reason: %s", code, errorInfo.getError(), errorInfo.getDescription());
+            project.getLogger().error(error);
+            throw new GradleException(error);
+        }
+    }
 }