#!/bin/bash
# Build script for libghostty-vt WASM
# Run this script after installing Zig

set -e

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
GHOSTTY_DIR="$SCRIPT_DIR/lib/ghostty"
OUTPUT_DIR="$SCRIPT_DIR/src/frontend"

echo "============================================"
echo "  Building libghostty-vt WebAssembly"
echo "============================================"
echo ""

# Check Zig installation
if ! command -v zig &> /dev/null; then
    echo "ERROR: Zig not found. Please install Zig 0.13.0+"
    echo "Download: https://ziglang.org/download/"
    exit 1
fi

ZIG_VERSION=$(zig version)
echo "Zig version: $ZIG_VERSION"
echo ""

# Create output directory
mkdir -p "$OUTPUT_DIR"

# Navigate to ghostty
cd "$GHOSTTY_DIR"

echo "Building libghostty-vt WASM..."
echo ""

# Build WASM module
zig build lib-vt \
    -Dtarget=wasm32-freestanding \
    -Doptimize=ReleaseSmall \
    -Dwasm_shared=false

# Find and copy WASM output
WASM_OUTPUT=$(find zig-out -name "*.wasm" 2>/dev/null | head -1)

if [ -n "$WASM_OUTPUT" ]; then
    cp "$WASM_OUTPUT" "$OUTPUT_DIR/ghostty-vt.wasm"
    echo ""
    echo "============================================"
    echo "  SUCCESS!"
    echo "============================================"
    echo "WASM file: $OUTPUT_DIR/ghostty-vt.wasm"
    echo ""
    echo "To run the terminal:"
    echo "  cd ghostty-web && npm start"
    echo ""
else
    echo ""
    echo "WARNING: WASM build succeeded but output not found"
    echo "Check: $GHOSTTY_DIR/zig-out/"
fi