From ad769f1e9cd39164efb651421c6c1c79f7c1db77 Mon Sep 17 00:00:00 2001
From: Kir_Antipov <kp.antipov@gmail.com>
Date: Tue, 21 Mar 2023 09:34:46 +0000
Subject: [PATCH] Made a reader for Quilt metadata

---
 src/loaders/quilt/quilt-metadata-reader.ts    | 14 +++++++
 .../quilt/quilt-metadata-reader.spec.ts       | 41 +++++++++++++++++++
 2 files changed, 55 insertions(+)
 create mode 100644 src/loaders/quilt/quilt-metadata-reader.ts
 create mode 100644 tests/unit/loaders/quilt/quilt-metadata-reader.spec.ts

diff --git a/src/loaders/quilt/quilt-metadata-reader.ts b/src/loaders/quilt/quilt-metadata-reader.ts
new file mode 100644
index 0000000..a03e6f0
--- /dev/null
+++ b/src/loaders/quilt/quilt-metadata-reader.ts
@@ -0,0 +1,14 @@
+import { ZippedTextLoaderMetadataReader } from "@/loaders/zipped-loader-metadata-reader";
+import { QuiltMetadata } from "./quilt-metadata";
+import { QUILT_MOD_JSON, RawQuiltMetadata } from "./raw-quilt-metadata";
+/**
+ * A metadata reader that is able to read Quilt mod metadata from a zipped file.
+ */
+export class QuiltMetadataReader extends ZippedTextLoaderMetadataReader<QuiltMetadata, RawQuiltMetadata> {
+    /**
+     * Constructs a new {@link QuiltMetadataReader} instance.
+     */
+    constructor() {
+        super(QUILT_MOD_JSON, QuiltMetadata.from, JSON.parse);
+    }
+}
diff --git a/tests/unit/loaders/quilt/quilt-metadata-reader.spec.ts b/tests/unit/loaders/quilt/quilt-metadata-reader.spec.ts
new file mode 100644
index 0000000..ecb6e08
--- /dev/null
+++ b/tests/unit/loaders/quilt/quilt-metadata-reader.spec.ts
@@ -0,0 +1,41 @@
+import { zipFile } from "@/../tests/utils/zip-utils";
+import mockFs from "mock-fs";
+import { QuiltMetadata } from "@/loaders/quilt/quilt-metadata";
+import { QuiltMetadataReader } from "@/loaders/quilt/quilt-metadata-reader";
+
+beforeEach(async () => {
+    mockFs({
+        "quilt.mod.jar": await zipFile([__dirname, "../../../content/quilt/quilt.mod.json"]),
+        "text.txt": "",
+    });
+});
+
+afterEach(() => {
+    mockFs.restore();
+});
+
+describe("QuiltMetadataReader", () => {
+    test("successfully reads quilt.mod.json", async () => {
+        const reader = new QuiltMetadataReader();
+
+        const metadata = await reader.readMetadataFile("quilt.mod.jar");
+
+        expect(metadata).toBeInstanceOf(QuiltMetadata);
+    });
+
+    test("returns undefined if file is not a Quilt mod", async () => {
+        const reader = new QuiltMetadataReader();
+
+        const metadata = await reader.readMetadataFile("text.txt");
+
+        expect(metadata).toBeUndefined();
+    });
+
+    test("returns undefined if file does not exist", async () => {
+        const reader = new QuiltMetadataReader();
+
+        const metadata = await reader.readMetadataFile("text.json");
+
+        expect(metadata).toBeUndefined();
+    });
+});