uninstall.sh

#!/usr/bin/env bash
set -euo pipefail

# Opus Guard Uninstaller
# Removes agent files, hook, and settings.json matchers installed by Opus Guard.
# Restores settings.json from backup if available.

CLAUDE_DIR="$HOME/.claude"
AGENTS_DIR="$CLAUDE_DIR/agents"
HOOKS_DIR="$CLAUDE_DIR/hooks"
SETTINGS_FILE="$CLAUDE_DIR/settings.json"
BACKUP_FILE="$CLAUDE_DIR/settings.json.opus-guard-backup"

if [ -t 1 ]; then
  GREEN='\033[0;32m'; YELLOW='\033[0;33m'; NC='\033[0m'
else
  GREEN=''; YELLOW=''; NC=''
fi

info() { echo -e "${GREEN}[+]${NC} $1"; }
warn() { echo -e "${YELLOW}[!]${NC} $1"; }

echo ""
echo "  Opus Guard Uninstaller"
echo "  ======================"
echo ""

# --- Remove agent files ---
AGENTS=("Explore.md" "researcher.md" "general-purpose.md" "coder.md")
for agent in "${AGENTS[@]}"; do
  if [ -f "$AGENTS_DIR/$agent" ]; then
    rm "$AGENTS_DIR/$agent"
    info "Removed agent: $agent"
  fi
done

# --- Remove hook file ---
if [ -f "$HOOKS_DIR/agent-model-guard.js" ]; then
  rm "$HOOKS_DIR/agent-model-guard.js"
  info "Removed hook: agent-model-guard.js"
fi

# --- Remove matchers from settings.json ---
if [ -f "$SETTINGS_FILE" ] && command -v node &>/dev/null; then
  node -e "
    const fs = require('fs');
    const settings = JSON.parse(fs.readFileSync('$SETTINGS_FILE', 'utf8'));

    if (settings.hooks?.PreToolUse) {
      const before = settings.hooks.PreToolUse.length;
      settings.hooks.PreToolUse = settings.hooks.PreToolUse.filter(entry =>
        !entry.hooks?.some(h => h.command?.includes('agent-model-guard'))
      );
      const removed = before - settings.hooks.PreToolUse.length;
      if (settings.hooks.PreToolUse.length === 0) delete settings.hooks.PreToolUse;
      if (Object.keys(settings.hooks).length === 0) delete settings.hooks;

      fs.writeFileSync('$SETTINGS_FILE', JSON.stringify(settings, null, 2) + '\n');
      process.stdout.write(String(removed));
    } else {
      process.stdout.write('0');
    }
  " 2>/dev/null | while read -r count; do
    if [ "$count" != "0" ]; then
      info "Removed $count hook matcher(s) from settings.json"
    fi
  done
fi

# --- Remove backup ---
if [ -f "$BACKUP_FILE" ]; then
  rm "$BACKUP_FILE"
  info "Removed settings backup"
fi

echo ""
info "Opus Guard uninstalled. Restart Claude Code to apply changes."
echo ""