From 6d8e0c3aadbedfbdf2a2764d8d85ebce41348f13 Mon Sep 17 00:00:00 2001
From: Derrick Hammer <derrick@derrickhammer.com>
Date: Mon, 31 Jul 2023 10:28:16 -0400
Subject: [PATCH] feat: initial version

---
 .presetterrc.json |  8 +++++++
 package.json      | 22 ++++++++++++++++++
 src/index.ts      |  6 +++++
 src/resolver.ts   | 58 +++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 94 insertions(+)
 create mode 100644 .presetterrc.json
 create mode 100644 package.json
 create mode 100644 src/index.ts
 create mode 100644 src/resolver.ts

diff --git a/.presetterrc.json b/.presetterrc.json
new file mode 100644
index 0000000..d4175ce
--- /dev/null
+++ b/.presetterrc.json
@@ -0,0 +1,8 @@
+{
+    "preset": [
+        "@lumeweb/presetter-kernel-module-preset"
+    ],
+    "config": {
+        "official": true
+    }
+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..8ade9dc
--- /dev/null
+++ b/package.json
@@ -0,0 +1,22 @@
+{
+    "name": "@lumeweb/resolver-module-cid",
+    "version": "0.1.0",
+    "type": "module",
+    "readme": "ERROR: No README data found!",
+    "_id": "@lumeweb/resolver-module-cid@0.1.0",
+    "repository": {
+        "type": "git",
+        "url": "gitea@git.lumeweb.com:LumeWeb/resolver-module-cid.git"
+    },
+    "scripts": {
+        "prepare": "presetter bootstrap",
+        "build": "run build",
+        "semantic-release": "semantic-release"
+    },
+    "dependencies": {
+        "@lumeweb/kernel-libresolver": "^0.1.0-develop.6"
+    },
+    "devDependencies": {
+        "@lumeweb/presetter-kernel-module-preset": "^0.1.0-develop.44"
+    }
+}
diff --git a/src/index.ts b/src/index.ts
new file mode 100644
index 0000000..afb24f2
--- /dev/null
+++ b/src/index.ts
@@ -0,0 +1,6 @@
+import { setup } from "@lumeweb/kernel-libresolver";
+import CID from "./resolver.js";
+
+// @ts-ignore
+setup(new CID());
+
diff --git a/src/resolver.ts b/src/resolver.ts
new file mode 100644
index 0000000..3e7046b
--- /dev/null
+++ b/src/resolver.ts
@@ -0,0 +1,58 @@
+import {
+  AbstractResolverModule,
+  DNS_RECORD_TYPE,
+  DNSResult,
+  resolverEmptyResponse,
+  ResolverOptions,
+  resolveSuccess,
+} from "@lumeweb/kernel-libresolver";
+
+const NETWORK_MAP = new Map(
+  Object.entries({
+    IPFS: "ipfs://",
+    IPNS: "ipns://",
+  }),
+);
+
+const NAMESPACE = "lume";
+
+export default class CID extends AbstractResolverModule {
+  ready(): Promise<void> {
+    return Promise.resolve(true) as any;
+  }
+
+  async resolve(
+    domain: string,
+    options: ResolverOptions,
+    bypassCache: boolean,
+  ): Promise<DNSResult> {
+    if (!domain.includes(".")) {
+      return resolverEmptyResponse();
+    }
+
+    const domainParts = domain.split(".");
+    const last = domainParts.slice()?.pop();
+    if (last !== NAMESPACE) {
+      return resolverEmptyResponse();
+    }
+
+      const network =  domainParts.slice(1).shift()?.toUpperCase() as string;
+
+    if (!NETWORK_MAP.has(network)) {
+      return resolverEmptyResponse();
+    }
+
+    const cid = domainParts.slice()?.shift();
+
+    if (!cid) {
+      return resolverEmptyResponse();
+    }
+
+    return resolveSuccess([
+      {
+        type: DNS_RECORD_TYPE.CONTENT,
+        value: NETWORK_MAP.get(network) + cid,
+      },
+    ]);
+  }
+}