Update basic_bitcoin example to use bitcoinjs-lib

.github/workflows/test.yml

@@ -76,6 +76,7 @@ jobs:
                     "examples/audio_and_video",
                     "examples/audio_recorder",
                     "examples/autoreload",
+                    "examples/basic_bitcoin",
                     "examples/bitcoin",
                     "examples/bitcoinjs-lib",
                     "examples/bitcore-lib",

examples/basic_bitcoin/.bitcoin.conf

@@ -5,3 +5,6 @@ regtest=1
 rpcuser=ic-btc-integration
 rpcpassword=QPQiNaph19FqUsCrBRN0FII7lyM26B51fAMeBQzCb-E=
 rpcauth=ic-btc-integration:cdf2741387f3a12438f69092f0fdad8e$62081498c98bee09a0dce2b30671123fa561932992ce377585e8e08bb0c11dfa
+
+# Enable indexing so we can look up transactions by their ids
+txindex=1

examples/basic_bitcoin/.gitignore

@@ -3,4 +3,3 @@
 .dfx
 dfx_generated
 node_modules
-

examples/basic_bitcoin/README.md

@@ -5,14 +5,14 @@ This is an implementation of the [basic_bitcoin example](https://github.com/dfin
 ## bitcoind
 
 ```bash
-mkdir .bitcoin
-mkdir .bitcoin/data
-
-curl https://bitcoincore.org/bin/bitcoin-core-23.0/bitcoin-23.0-x86_64-linux-gnu.tar.gz -o bitcoin.tar.gz
-
-tar xzf bitcoin.tar.gz --overwrite --strip-components=1 --directory=.bitcoin/ bitcoin-23.0/bin/
-
-rm -rf bitcoin.tar.gz
+mkdir -p .bitcoin/data
+
+# Check if bitcoind executable exists; if not, download and extract it
+if [ ! -f ".bitcoin/bin/bitcoind" ]; then
+  curl -o bitcoin.tar.gz https://bitcoincore.org/bin/bitcoin-core-23.0/bitcoin-23.0-x86_64-linux-gnu.tar.gz
+  tar xzf bitcoin.tar.gz --overwrite --strip-components=1 --directory=.bitcoin/ bitcoin-23.0/bin/
+  rm -rf bitcoin.tar.gz
+fi
 ```
 
 # Deployment
@@ -28,13 +28,13 @@ rm -rf bitcoin.tar.gz
 
 ```bash
 # Do this in its own terminal
-dfx start --clean --host 127.0.0.1:8000 --enable-bitcoin
+dfx start --clean --host 127.0.0.1:8000
 ```
 
 ## basic_bitcion
 
 ```bash
-dfx deploy --argument='(variant { Regtest })'
+BITCOIN_NETWORK=regtest dfx deploy'
 ```
 
 # Usage

examples/basic_bitcoin/dfx.json

@@ -1,25 +1,25 @@
 {
     "canisters": {
         "basic_bitcoin": {
-            "type": "custom",
+            "type": "azle",
             "main": "src/index.ts",
-            "candid": "src/index.did",
-            "build": "npx azle basic_bitcoin",
-            "wasm": ".azle/basic_bitcoin/basic_bitcoin.wasm.gz",
-            "declarations": {
-                "output": "test/dfx_generated/basic_bitcoin",
-                "node_compatibility": true
-            },
-            "metadata": [
-                {
-                    "name": "candid:service",
-                    "path": "src/index.did"
-                },
-                {
-                    "name": "cdk:name",
-                    "content": "azle"
-                }
-            ]
+            "env": ["BITCOIN_NETWORK"]
+        }
+    },
+    "networks": {
+        "local": {
+            "bind": "127.0.0.1:8000",
+            "type": "ephemeral",
+            "replica": {
+                "subnet_type": "system"
+            }
+        }
+    },
+    "defaults": {
+        "bitcoin": {
+            "enabled": true,
+            "nodes": ["127.0.0.1:18444"],
+            "log_level": "info"
         }
     }
 }