From 2e27e3fbdb65d145ffb14709a9713bff726ef6c6 Mon Sep 17 00:00:00 2001
From: 0xp3gasus <0xp3gasus@proton.me>
Date: Sat, 21 Sep 2024 17:17:17 +0200
Subject: [PATCH] Bitcoin taproot example

---
 examples/bitcoin/.codesandbox/tasks.json      |  9 ++++++++
 .../bitcoin/.devcontainer/devcontainer.json   |  4 ++++
 examples/bitcoin/CHANGELOG.md                 |  2 ++
 examples/bitcoin/README.md                    | 16 ++++++++++++++
 examples/bitcoin/address-taproot.ts           | 21 +++++++++++++++++++
 examples/bitcoin/package.json                 | 21 +++++++++++++++++++
 examples/bitcoin/tsconfig.json                | 15 +++++++++++++
 yarn.lock                                     | 12 +++++++++++
 8 files changed, 100 insertions(+)
 create mode 100644 examples/bitcoin/.codesandbox/tasks.json
 create mode 100644 examples/bitcoin/.devcontainer/devcontainer.json
 create mode 100644 examples/bitcoin/CHANGELOG.md
 create mode 100644 examples/bitcoin/README.md
 create mode 100644 examples/bitcoin/address-taproot.ts
 create mode 100644 examples/bitcoin/package.json
 create mode 100644 examples/bitcoin/tsconfig.json

diff --git a/examples/bitcoin/.codesandbox/tasks.json b/examples/bitcoin/.codesandbox/tasks.json
new file mode 100644
index 000000000..fff1c37f8
--- /dev/null
+++ b/examples/bitcoin/.codesandbox/tasks.json
@@ -0,0 +1,9 @@
+{
+  // These tasks will run in order when initializing your CodeSandbox project.
+  "setupTasks": [
+    {
+      "name": "Install Dependencies",
+      "command": "yarn install"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/examples/bitcoin/.devcontainer/devcontainer.json b/examples/bitcoin/.devcontainer/devcontainer.json
new file mode 100644
index 000000000..9cef189a7
--- /dev/null
+++ b/examples/bitcoin/.devcontainer/devcontainer.json
@@ -0,0 +1,4 @@
+{
+    "name": "Devcontainer",
+    "image": "ghcr.io/codesandbox/devcontainers/typescript-node:latest"
+}
\ No newline at end of file
diff --git a/examples/bitcoin/CHANGELOG.md b/examples/bitcoin/CHANGELOG.md
new file mode 100644
index 000000000..d25e9d9a8
--- /dev/null
+++ b/examples/bitcoin/CHANGELOG.md
@@ -0,0 +1,2 @@
+# xchainjs-bitcoin
+
diff --git a/examples/bitcoin/README.md b/examples/bitcoin/README.md
new file mode 100644
index 000000000..6eed350d4
--- /dev/null
+++ b/examples/bitcoin/README.md
@@ -0,0 +1,16 @@
+# Bitcoin
+
+Bitcoin examples to show different use cases using its client
+
+## Examples
+
+### Address
+
+#### Get Taproot address by index
+
+Check out how you should get your Taproot account address at certain index in this [example](https://github.com/xchainjs/xchainjs-lib/blob/master/examples/solana/address.ts) or run it as
+
+```sh
+yarn taprootAddress phrase index
+```
+
diff --git a/examples/bitcoin/address-taproot.ts b/examples/bitcoin/address-taproot.ts
new file mode 100644
index 000000000..44cc78e12
--- /dev/null
+++ b/examples/bitcoin/address-taproot.ts
@@ -0,0 +1,21 @@
+import { AddressFormat, Client, defaultBTCParams, tapRootDerivationPaths } from '@xchainjs/xchain-bitcoin'
+
+const main = async () => {
+  const phrase = `${process.argv[2]}`
+  const index = process.argv[3] ? Number(process.argv[3]) : 0
+
+  const client = new Client({
+    ...defaultBTCParams,
+    phrase,
+    rootDerivationPaths: tapRootDerivationPaths,
+    addressFormat: AddressFormat.P2TR,
+  })
+
+  const address = await client.getAddressAsync(index)
+
+  console.log(`Your Taproot account at index ${index} is ${address}`)
+}
+
+main()
+  .then(() => process.exit(0))
+  .catch((err) => console.error(err))
diff --git a/examples/bitcoin/package.json b/examples/bitcoin/package.json
new file mode 100644
index 000000000..a11793f66
--- /dev/null
+++ b/examples/bitcoin/package.json
@@ -0,0 +1,21 @@
+{
+  "name": "xchainjs-bitcoin",
+  "private": true,
+  "version": "0.0.1",
+  "scripts": {
+    "taprootAddress": "npx ts-node address-taproot.ts",
+    "build": "tsc --noEmit"
+  },
+  "description": "Examples using Bitcoin client",
+  "main": "index.js",
+  "license": "MIT",
+  "dependencies": {
+    "@xchainjs/xchain-bitcoin": "workspace:*",
+    "@xchainjs/xchain-util": "workspace:*"
+  },
+  "devDependencies": {
+    "@types/node": "20.11.28",
+    "ts-node": "10.9.2",
+    "typescript": "^5.0.4"
+  }
+}
\ No newline at end of file
diff --git a/examples/bitcoin/tsconfig.json b/examples/bitcoin/tsconfig.json
new file mode 100644
index 000000000..7b9e0e966
--- /dev/null
+++ b/examples/bitcoin/tsconfig.json
@@ -0,0 +1,15 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "target": "es5",
+        "noEmitOnError": true,
+        "resolveJsonModule": true,
+        "esModuleInterop": true,
+        "lib": [
+            "es6",
+            "dom",
+            "es2016",
+            "es2017"
+        ]
+    }
+}
\ No newline at end of file
diff --git a/yarn.lock b/yarn.lock
index 520fe79ab..8b5264647 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -13668,6 +13668,18 @@ __metadata:
   languageName: node
   linkType: hard
 
+"xchainjs-bitcoin@workspace:examples/bitcoin":
+  version: 0.0.0-use.local
+  resolution: "xchainjs-bitcoin@workspace:examples/bitcoin"
+  dependencies:
+    "@types/node": "npm:20.11.28"
+    "@xchainjs/xchain-bitcoin": "workspace:*"
+    "@xchainjs/xchain-util": "workspace:*"
+    ts-node: "npm:10.9.2"
+    typescript: "npm:^5.0.4"
+  languageName: unknown
+  linkType: soft
+
 "xchainjs-check-tx@workspace:examples/check-tx":
   version: 0.0.0-use.local
   resolution: "xchainjs-check-tx@workspace:examples/check-tx"