install.sh

#!/usr/bin/env bash
# claude-code-ding installer
# Adds audio notification hooks to your Claude Code settings
# https://github.com/whoisjaso/claude-code-ding

set -euo pipefail

SETTINGS_FILE="$HOME/.claude/settings.json"

echo ""
echo "  claude-code-ding"
echo "  Audio notifications for Claude Code"
echo "  ─────────────────────────────────────"
echo ""

# Detect OS
if [[ "$OSTYPE" == "darwin"* ]]; then
    PLATFORM="macos"
    echo "  Platform: macOS"
elif [[ "$OSTYPE" == "linux-gnu"* ]]; then
    PLATFORM="linux"
    echo "  Platform: Linux"
    # Check for paplay
    if ! command -v paplay &>/dev/null; then
        echo ""
        echo "  Warning: paplay not found. Install pulseaudio-utils:"
        echo "    sudo apt install pulseaudio-utils"
        echo ""
        echo "  Falling back to terminal bell."
    fi
elif [[ "$OSTYPE" == "msys" || "$OSTYPE" == "cygwin" || "$OSTYPE" == "win32" ]]; then
    PLATFORM="windows"
    echo "  Platform: Windows"
else
    echo "  Platform: Unknown ($OSTYPE), using Linux profile"
    PLATFORM="linux"
fi

echo ""

# Ensure .claude directory exists
mkdir -p "$HOME/.claude"

# Define hooks per platform
case "$PLATFORM" in
    windows)
        QUESTION_CMD='powershell -NoProfile -Command \"[console]::beep(900,150); [console]::beep(1100,150); [console]::beep(900,150)\"'
        STOP_CMD='powershell -NoProfile -Command \"[console]::beep(700,300); Start-Sleep -Milliseconds 100; [console]::beep(700,300)\"'
        TASK_CMD='powershell -NoProfile -Command \"[console]::beep(600,150); [console]::beep(800,150); [console]::beep(1000,300)\"'
        ;;
    macos)
        QUESTION_CMD='afplay /System/Library/Sounds/Tink.aiff; afplay /System/Library/Sounds/Tink.aiff; afplay /System/Library/Sounds/Tink.aiff'
        STOP_CMD='afplay /System/Library/Sounds/Pop.aiff; sleep 0.1; afplay /System/Library/Sounds/Pop.aiff'
        TASK_CMD='afplay /System/Library/Sounds/Glass.aiff'
        ;;
    linux)
        QUESTION_CMD="paplay /usr/share/sounds/freedesktop/stereo/dialog-information.oga 2>/dev/null || echo -e '\\\\a'"
        STOP_CMD="paplay /usr/share/sounds/freedesktop/stereo/message-new-instant.oga 2>/dev/null || echo -e '\\\\a'"
        TASK_CMD="paplay /usr/share/sounds/freedesktop/stereo/complete.oga 2>/dev/null || echo -e '\\\\a'"
        ;;
esac

# Build the hooks JSON using node (available on all Claude Code systems)
if ! command -v node &>/dev/null; then
    echo "  Error: Node.js is required (Claude Code depends on it)."
    exit 1
fi

node -e "
const fs = require('fs');
const path = '$SETTINGS_FILE';

let settings = {};
if (fs.existsSync(path)) {
    try {
        settings = JSON.parse(fs.readFileSync(path, 'utf8'));
    } catch (e) {
        console.error('  Error: Invalid JSON in ' + path);
        console.error('  Please fix your settings file and try again.');
        process.exit(1);
    }
}

if (!settings.hooks) settings.hooks = {};

// Add PreToolUse for AskUserQuestion (merge with existing)
if (!settings.hooks.PreToolUse) settings.hooks.PreToolUse = [];
const hasAskHook = settings.hooks.PreToolUse.some(h => h.matcher === 'AskUserQuestion');
if (!hasAskHook) {
    settings.hooks.PreToolUse.push({
        matcher: 'AskUserQuestion',
        hooks: [{
            type: 'command',
            command: $(printf '%s' "$QUESTION_CMD" | node -e "process.stdout.write(JSON.stringify(require('fs').readFileSync(0,'utf8')))"),
            timeout: 5,
            async: true
        }]
    });
}

// Add Stop hook (merge with existing)
if (!settings.hooks.Stop) settings.hooks.Stop = [];
const hasStopDing = settings.hooks.Stop.some(h =>
    h.hooks && h.hooks.some(hh => hh.command && hh.command.includes('beep') || hh.command && hh.command.includes('afplay') || hh.command && hh.command.includes('paplay'))
);
if (!hasStopDing) {
    settings.hooks.Stop.push({
        hooks: [{
            type: 'command',
            command: $(printf '%s' "$STOP_CMD" | node -e "process.stdout.write(JSON.stringify(require('fs').readFileSync(0,'utf8')))"),
            timeout: 5,
            async: true
        }]
    });
}

// Add TaskCompleted hook (merge with existing)
if (!settings.hooks.TaskCompleted) settings.hooks.TaskCompleted = [];
const hasTaskDing = settings.hooks.TaskCompleted.some(h =>
    h.hooks && h.hooks.some(hh => hh.command && hh.command.includes('beep') || hh.command && hh.command.includes('afplay') || hh.command && hh.command.includes('paplay'))
);
if (!hasTaskDing) {
    settings.hooks.TaskCompleted.push({
        hooks: [{
            type: 'command',
            command: $(printf '%s' "$TASK_CMD" | node -e "process.stdout.write(JSON.stringify(require('fs').readFileSync(0,'utf8')))"),
            timeout: 5,
            async: true
        }]
    });
}

fs.writeFileSync(path, JSON.stringify(settings, null, 2) + '\n');
console.log('  Done! Hooks added to ' + path);
"

echo ""
echo "  Three notification hooks installed:"
echo "    - Question asked    → attention beeps"
echo "    - Stopped / input   → ready signal"
echo "    - Task completed    → completion chime"
echo ""
echo "  Restart Claude Code or open /hooks to activate."
echo ""
echo "  Customize sounds: edit hooks in $SETTINGS_FILE"
echo "  Uninstall: remove the hook entries from settings.json"
echo ""