From c8801544356af2d76e46d410e1e1960af94d23ca Mon Sep 17 00:00:00 2001
From: Joaquim Verges <joaquim.verges@gmail.com>
Date: Fri, 24 Jun 2022 11:38:54 -0700
Subject: [PATCH] extract licenses from metadata

---
 src/common/feature-detection.ts | 6 ++++++
 src/schema/contracts/custom.ts  | 1 +
 test/custom.test.ts             | 1 +
 3 files changed, 8 insertions(+)

diff --git a/src/common/feature-detection.ts b/src/common/feature-detection.ts
index 0942fff00..dae12e182 100644
--- a/src/common/feature-detection.ts
+++ b/src/common/feature-detection.ts
@@ -288,11 +288,17 @@ async function fetchContractMetadata(
     details: metadata.output.devdoc.detail,
     notice: metadata.output.userdoc.notice,
   });
+  const licenses: string[] = [
+    ...new Set(
+      Object.entries(metadata.sources).map(([_, src]) => (src as any).license),
+    ),
+  ];
   return {
     name,
     abi,
     metadata,
     info,
+    licenses,
   };
 }
 
diff --git a/src/schema/contracts/custom.ts b/src/schema/contracts/custom.ts
index 7bc5db7df..25bffae71 100644
--- a/src/schema/contracts/custom.ts
+++ b/src/schema/contracts/custom.ts
@@ -138,4 +138,5 @@ export type PublishedMetadata = {
   abi: z.infer<typeof AbiSchema>;
   metadata: Record<string, any>;
   info: z.infer<typeof ContractInfoSchema>;
+  licenses: string[];
 };
diff --git a/test/custom.test.ts b/test/custom.test.ts
index 80889f346..35fdbd703 100644
--- a/test/custom.test.ts
+++ b/test/custom.test.ts
@@ -124,6 +124,7 @@ describe("Custom Contracts", async () => {
     invariant(c, "Contract undefined");
     const meta = await c.publishedMetadata.get();
     expect(meta.name).to.eq("Greeter");
+    expect(meta.licenses.length).gt(0);
   });
 
   it("should extract functions", async () => {