added prerequisite handling for westend, removed helper function

Author: x3c41a

examples/justfile

@@ -14,6 +14,65 @@ default: (run-authorize-and-store "smoldot" "bulletin-polkadot-runtime")
 build runtime="bulletin-polkadot-runtime":
     cargo build --release -p {{ runtime }}
 
+# Setup prerequisites for Westend runtime (polkadot and polkadot-parachain binaries)
+# This recipe clones polkadot-sdk, builds required binaries, and copies them to ~/local_bridge_testing/bin
+setup-westend-prerequisites:
+    #!/usr/bin/env bash
+    set -e
+    
+    BIN_DIR=~/local_bridge_testing/bin
+    POLKADOT_SDK_DIR=~/local_bridge_testing/polkadot-sdk
+    
+    echo "🔧 Setting up Westend runtime prerequisites..."
+    echo "   Target directory: $BIN_DIR"
+    
+    # Create bin directory
+    mkdir -p $BIN_DIR
+    
+    # Clone polkadot-sdk if it doesn't exist
+    if [ ! -d "$POLKADOT_SDK_DIR" ]; then
+        echo "   Cloning polkadot-sdk repository..."
+        git clone https://github.com/paritytech/polkadot-sdk.git $POLKADOT_SDK_DIR
+    else
+        echo "   polkadot-sdk already exists at $POLKADOT_SDK_DIR"
+    fi
+    
+    cd $POLKADOT_SDK_DIR
+    
+    # Check out the required branch
+    echo "   Checking out branch bko-bulletin-para-support..."
+    git fetch origin
+    git reset --hard origin/bko-bulletin-para-support
+    
+    # Build polkadot binary
+    echo "   Building polkadot binary (this may take a while)..."
+    cargo build -p polkadot -r
+    
+    # Verify and copy polkadot binaries
+    echo "   Copying polkadot binaries..."
+    ls -la target/release/polkadot
+    cp target/release/polkadot $BIN_DIR/
+    cp target/release/polkadot-prepare-worker $BIN_DIR/
+    cp target/release/polkadot-execute-worker $BIN_DIR/
+    
+    # Verify polkadot version
+    $BIN_DIR/polkadot --version
+    
+    # Build polkadot-parachain binary
+    echo "   Building polkadot-parachain binary (this may take a while)..."
+    cargo build -p polkadot-parachain-bin -r
+    
+    # Verify and copy polkadot-parachain binary
+    echo "   Copying polkadot-parachain binary..."
+    ls -la target/release/polkadot-parachain
+    cp target/release/polkadot-parachain $BIN_DIR/
+    
+    # Verify polkadot-parachain version
+    $BIN_DIR/polkadot-parachain --version
+    
+    echo "✅ Westend prerequisites setup complete!"
+    echo "   Binaries installed in: $BIN_DIR"
+
 # Install JavaScript dependencies
 npm-install:
     npm install
@@ -30,25 +89,6 @@ _ipfs-cmd:
         exit 1
     fi
 
-# Helper function to map runtime package name to zombienet config filename (toml file)
-_zombienet-config-name runtime:
-    #!/usr/bin/env bash
-    case "{{ runtime }}" in
-        "bulletin-polkadot-runtime")
-            echo "bulletin-polkadot-local.toml"
-            ;;
-        "bulletin-westend-runtime")
-            echo "bulletin-westend-local.toml"
-            ;;
-        "polkadot-bulletin-chain-runtime")
-            echo "bulletin-polkadot.toml"
-            ;;
-        *)
-            echo "❌ Error: Unknown runtime '{{ runtime }}'" >&2
-            exit 1
-            ;;
-    esac
-
 # Start solo chain or parachain with zombienet in background
 # Parameters:
 #   runtime - Runtime name (e.g., "bulletin-polkadot-runtime", "bulletin-westend-runtime"), taken from ../scripts/runtimes-matrix.json
@@ -78,9 +118,43 @@ bulletin-solo-zombienet-start runtime="bulletin-polkadot-runtime":
 
     # Get absolute paths for bulletin binary and config
     BULLETIN_BINARY=$(cd .. && pwd)/target/release/polkadot-bulletin-chain
-    ZOMBIENET_CONFIG=$(cd .. && pwd)/zombienet/bulletin-polkadot-local.toml
-
-    POLKADOT_BULLETIN_BINARY_PATH=$BULLETIN_BINARY $ZOMBIENET_BIN -p native spawn $ZOMBIENET_CONFIG > /tmp/zombienet.log 2>&1 &
+    
+    # Handle different runtimes
+    if [ "{{ runtime }}" = "bulletin-westend-runtime" ]; then
+        echo "   Setting up Westend runtime..."
+        
+        # Run prerequisites setup first
+        just setup-westend-prerequisites
+        
+        # Set paths to binaries
+        POLKADOT_BINARY_PATH=~/local_bridge_testing/bin/polkadot
+        POLKADOT_PARACHAIN_BINARY_PATH=~/local_bridge_testing/bin/polkadot-parachain
+        
+        # Verify binaries exist after setup
+        if [ ! -f "$POLKADOT_BINARY_PATH" ] || [ ! -f "$POLKADOT_PARACHAIN_BINARY_PATH" ]; then
+            echo "❌ Error: Prerequisites setup completed but binaries still not found"
+            echo "   Expected POLKADOT_BINARY_PATH: $POLKADOT_BINARY_PATH"
+            echo "   Expected POLKADOT_PARACHAIN_BINARY_PATH: $POLKADOT_PARACHAIN_BINARY_PATH"
+            exit 1
+        fi
+        
+        echo "   Using POLKADOT_BINARY_PATH=$POLKADOT_BINARY_PATH"
+        echo "   Using POLKADOT_PARACHAIN_BINARY_PATH=$POLKADOT_PARACHAIN_BINARY_PATH"
+        
+        # Create chain spec
+        echo "   Creating Westend chain spec..."
+        (cd .. && ./scripts/create_bulletin_westend_spec.sh)
+        
+        ZOMBIENET_CONFIG=$(cd .. && pwd)/zombienet/bulletin-westend-local.toml
+        POLKADOT_BINARY_PATH=$POLKADOT_BINARY_PATH \
+          POLKADOT_PARACHAIN_BINARY_PATH=$POLKADOT_PARACHAIN_BINARY_PATH \
+          $ZOMBIENET_BIN -p native spawn $ZOMBIENET_CONFIG > /tmp/zombienet.log 2>&1 &
+    else
+        # Default: bulletin-polkadot-runtime
+        echo "   Setting up Polkadot runtime..."
+        ZOMBIENET_CONFIG=$(cd .. && pwd)/zombienet/bulletin-polkadot-local.toml
+        POLKADOT_BULLETIN_BINARY_PATH=$BULLETIN_BINARY $ZOMBIENET_BIN -p native spawn $ZOMBIENET_CONFIG > /tmp/zombienet.log 2>&1 &
+    fi
 
     ZOMBIENET_PID=$!
     echo $ZOMBIENET_PID > {{ PID_DIR }}/zombienet.pid