install.sh

#!/usr/bin/env bash
#
# cc-diff installer
#

set -e

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
INSTALL_DIR="${HOME}/.local/bin"
CLAUDE_SETTINGS="${HOME}/.claude/settings.json"

RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m'

echo "Installing cc-diff..."

# 1. Ensure install directory exists and is in PATH
mkdir -p "$INSTALL_DIR"

if [[ ":$PATH:" != *":$INSTALL_DIR:"* ]]; then
    echo -e "${YELLOW}Note:${NC} $INSTALL_DIR is not in your PATH"
    echo "Add this to your ~/.zshrc:"
    echo "  export PATH=\"\$HOME/.local/bin:\$PATH\""
fi

# 2. Symlink the script
if [[ -L "$INSTALL_DIR/cc-diff" ]]; then
    rm "$INSTALL_DIR/cc-diff"
fi
ln -sf "$SCRIPT_DIR/cc-diff" "$INSTALL_DIR/cc-diff"
echo -e "${GREEN}✓${NC} Linked cc-diff to $INSTALL_DIR/cc-diff"

# 3. Update Claude Code settings with hook
if [[ -f "$CLAUDE_SETTINGS" ]]; then
    # Check if hooks already exist
    if grep -q '"hooks"' "$CLAUDE_SETTINGS" 2>/dev/null; then
        echo -e "${YELLOW}!${NC} hooks already exist in $CLAUDE_SETTINGS"
        echo "  Please manually add the PostToolUse hook. See README.md"
    else
        # Use jq if available, otherwise use a simple approach
        if command -v jq &>/dev/null; then
            tmp=$(mktemp)
            jq '. + {
                "hooks": {
                    "PostToolUse": [
                        {
                            "matcher": "Edit|Write",
                            "hooks": [
                                {
                                    "type": "command",
                                    "command": "cc-diff log"
                                }
                            ]
                        }
                    ]
                }
            }' "$CLAUDE_SETTINGS" > "$tmp" && mv "$tmp" "$CLAUDE_SETTINGS"
            echo -e "${GREEN}✓${NC} Added PostToolUse hook to Claude Code settings"
        else
            echo -e "${YELLOW}!${NC} jq not found. Please manually add hooks to $CLAUDE_SETTINGS"
            echo "  See README.md for the configuration."
        fi
    fi
else
    # Create settings file
    mkdir -p "$(dirname "$CLAUDE_SETTINGS")"
    cat > "$CLAUDE_SETTINGS" <<EOF
{
    "hooks": {
        "PostToolUse": [
            {
                "matcher": "Edit|Write",
                "hooks": [
                    {
                        "type": "command",
                        "command": "cc-diff log"
                    }
                ]
            }
        ]
    }
}
EOF
    echo -e "${GREEN}✓${NC} Created Claude Code settings with hook"
fi

# 4. Check for fzf
if ! command -v fzf &>/dev/null; then
    echo -e "${YELLOW}!${NC} fzf not installed. Install with: brew install fzf"
fi

echo ""
echo -e "${GREEN}Installation complete!${NC}"
echo ""
echo "Usage:"
echo "  cc-diff         Browse changed files interactively"
echo "  cc-diff list    List changed files"
echo "  cc-diff clear   Clear the log (before starting a new task)"
echo ""
echo "From within Claude Code, use:  !cc-diff"