#!/bin/bash
# setup — Install gstack-opencode for OpenCode
set -e

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
SKILLS_DIR="$HOME/.config/opencode/skills"
GSTACK_SKILLS_DIR="$SKILLS_DIR/gstack"

echo "🔧 Installing gstack-opencode..."

# 1. Check prerequisites
echo "Checking prerequisites..."
if ! command -v bun &> /dev/null; then
  echo "❌ bun is not installed. Install it first: https://bun.sh"
  exit 1
fi

# 2. Build browse binary if not exists
if [ ! -f "$SCRIPT_DIR/browse/dist/browse" ]; then
  echo "Building browse binary..."
  if [ -d "$SCRIPT_DIR/source" ]; then
    (cd "$SCRIPT_DIR/source" && bun install && bun build --compile browse/src/cli.ts --outfile "$SCRIPT_DIR/browse/dist/browse")
  else
    echo "❌ Source directory not found. Clone gstack first."
    exit 1
  fi
fi

# 3. Create OpenCode skills directory
echo "Creating OpenCode skills directory..."
mkdir -p "$GSTACK_SKILLS_DIR"

# 4. Symlink skills
echo "Linking skills..."
for skill_dir in "$SCRIPT_DIR/skills"/*/; do
  skill_name=$(basename "$skill_dir")
  target="$GSTACK_SKILLS_DIR/$skill_name"
  
  if [ -L "$target" ]; then
    rm "$target"
  elif [ -d "$target" ]; then
    echo "Warning: $target exists and is not a symlink. Skipping."
    continue
  fi
  
  ln -sf "$skill_dir" "$target"
  echo "  ✓ Linked: $skill_name"
done

# 5. Create ~/.gstack directories
echo "Creating state directories..."
mkdir -p ~/.gstack/{sessions,projects,analytics}

# 6. Create environment file
cat > "$GSTACK_SKILLS_DIR/.env" << EOF
export GSTACK_OPENCODE_DIR="$SCRIPT_DIR"
export GSTACK_BROWSE="$SCRIPT_DIR/browse/dist/browse"
EOF

echo ""
echo "✅ gstack-opencode installed successfully!"
echo ""
echo "Skills location: $GSTACK_SKILLS_DIR"
echo "Browse binary: $SCRIPT_DIR/browse/dist/browse"
echo ""
echo "Available skills:"
ls -1 "$GSTACK_SKILLS_DIR" | sed 's/^/  \//' | head -28
echo ""
echo "To use in your shell, add to your .bashrc/.zshrc:"
echo "  source $SCRIPT_DIR/bin/gstack-env.sh"