From 81a826a2d8b4ecd34fde3111260ae0c52f7ad34f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20Renaud?= <clement+git@clementrenaud.com>
Date: Mon, 18 Mar 2024 15:43:23 +0100
Subject: [PATCH] add script to create localhost file

---
 packages/networks/bin/localhost.js | 83 ++++++++++++++++++++++++++++++
 packages/networks/package.json     |  3 ++
 2 files changed, 86 insertions(+)
 create mode 100644 packages/networks/bin/localhost.js

diff --git a/packages/networks/bin/localhost.js b/packages/networks/bin/localhost.js
new file mode 100644
index 00000000000..73f74dc819c
--- /dev/null
+++ b/packages/networks/bin/localhost.js
@@ -0,0 +1,83 @@
+import fs from 'fs-extra'
+import path from 'path'
+
+// We use Partial<NetworkConfig> for localhost as we don't have all the information
+const defaultLocalhost = {
+  chain: 'localhost',
+  description: 'Localhost network.',
+  featured: false,
+  fullySubsidizedGas: true,
+  id: 31337,
+  isTestNetwork: true,
+  name: 'Localhost',
+  nativeCurrency: {
+    coingecko: 'ethereum',
+    decimals: 18,
+    name: 'ETH',
+    symbol: 'ETH',
+  },
+  provider: 'http://127.0.0.1:8545',
+  publicLockVersionToDeploy: 13,
+  publicProvider: 'http://127.0.0.1:8545',
+  subgraph: {
+    endpoint: '',
+  },
+}
+
+const generateLocalhostNetworkFile = ({
+  unlockAddress,
+  subgraphEnpoint = 'http://localhost:8000/subgraphs/name/testgraph',
+}) => {
+  const localhost = {
+    ...defaultLocalhost,
+    subgraph: {
+      endpoint: subgraphEnpoint,
+    },
+    unlockAddress,
+  }
+
+  // log for debug purposes
+  console.log(localhost)
+
+  // output to js file
+  const parsed = `import { NetworkConfig } from '@unlock-protocol/types'
+  
+// We use Partial<NetworkConfig> for localhost as we don't have all the information
+export const localhost: Partial<NetworkConfig> = ${JSON.stringify(localhost)}
+export default localhost
+  `
+  return parsed
+}
+
+const run = async () => {
+  const [networkInfoPath, subgraphEnpoint] = process.argv.slice(2)
+
+  const networkInfo = await fs.readJSON(networkInfoPath)
+  const {
+    localhost: {
+      Unlock: { address: unlockAddress },
+    },
+  } = networkInfo
+
+  console.log(networkInfo)
+
+  console.log(`Creating localhost file for unlockAddress ${unlockAddress}`)
+
+  if (!unlockAddress) {
+    throw new Error('Missing unlockAddress arg')
+  }
+
+  const fileContent = generateLocalhostNetworkFile({
+    subgraphEnpoint,
+    unlockAddress,
+  })
+
+  const filePath = path.resolve('./src/networks/localhost.ts')
+
+  await fs.writeFile(filePath, fileContent)
+}
+run()
+  .then(() => console.log('done'))
+  .catch((err) => {
+    throw err
+  })
diff --git a/packages/networks/package.json b/packages/networks/package.json
index 887df4a7616..e88bbab2d3e 100644
--- a/packages/networks/package.json
+++ b/packages/networks/package.json
@@ -18,6 +18,7 @@
     "build": "tsup src/index.ts --dts --format esm,cjs",
     "check-tokens": "tsx ./bin/check-tokens",
     "clean": "rm -rf ./dist",
+    "create-localhost": "tsx ./bin/localhost",
     "check": "tsx ./bin/keys",
     "prepublish": "yarn build",
     "doc": "node ./bin/doc.js",
@@ -32,7 +33,9 @@
     "@unlock-protocol/tsconfig": "workspace:^",
     "@unlock-protocol/types": "workspace:^",
     "eslint": "8.54.0",
+    "fs-extra": "11.2.0",
     "tsup": "8.0.2",
+
     "typescript": "5.3.3"
   },
   "files": [