feat: implement comprehensive emergency pause system

check-dex-status.sh

@@ -0,0 +1,89 @@
+#!/bin/bash
+# GalaSwap DEX Status Check Script
+# Usage: ./check-dex-status.sh
+
+echo "🔍 GALASWAP DEX STATUS CHECK"
+echo "============================"
+echo "Timestamp: $(date)"
+echo ""
+
+# TODO: Replace these with your actual GalaChain connection details
+CHANNEL_NAME="product-channel"
+CHAINCODE_NAME="basic-product"
+PEER_ADDRESS="peer0.your-org.com:7051"
+
+# Method 1: Using gala-cli (if available)
+if command -v gala-cli &> /dev/null; then
+    echo "📡 Checking DEX status via gala-cli..."
+
+    # Try to call checkPaused - if it throws an error, DEX is paused
+    if gala-cli chaincode query \
+        --channel-name "$CHANNEL_NAME" \
+        --chaincode-name "$CHAINCODE_NAME" \
+        --function-name "checkPaused" \
+        --args "" \
+        --peer-addresses "$PEER_ADDRESS" 2>/dev/null; then
+
+        echo "✅ DEX STATUS: OPERATIONAL"
+        echo "🟢 All trading functions are active"
+    else
+        echo "🔴 DEX STATUS: PAUSED"
+        echo "🚫 All trading functions are blocked"
+    fi
+
+# Method 2: Using peer CLI (fallback)
+elif command -v peer &> /dev/null; then
+    echo "📡 Checking DEX status via peer CLI..."
+
+    if peer chaincode query \
+        -C "$CHANNEL_NAME" \
+        -n "$CHAINCODE_NAME" \
+        -c "{\"function\":\"checkPaused\",\"Args\":[]}" 2>/dev/null; then
+
+        echo "✅ DEX STATUS: OPERATIONAL"
+        echo "🟢 All trading functions are active"
+    else
+        echo "🔴 DEX STATUS: PAUSED"
+        echo "🚫 All trading functions are blocked"
+    fi
+
+# Method 3: API call (if CLI tools not available)
+else
+    echo "📡 Checking DEX status via API..."
+
+    # TODO: Replace with your actual API endpoint and auth
+    API_ENDPOINT="https://your-galachain-api.com/api/chaincode/query"
+    AUTH_TOKEN="your-admin-token"
+
+    if curl -X POST "$API_ENDPOINT" \
+        -H "Content-Type: application/json" \
+        -H "Authorization: Bearer $AUTH_TOKEN" \
+        -d "{
+            \"chaincodeName\": \"$CHAINCODE_NAME\",
+            \"functionName\": \"checkPaused\",
+            \"args\": []
+        }" \
+        --fail \
+        --silent \
+        --show-error 2>/dev/null; then
+
+        echo "✅ DEX STATUS: OPERATIONAL"
+        echo "🟢 All trading functions are active"
+    else
+        echo "🔴 DEX STATUS: PAUSED"
+        echo "🚫 All trading functions are blocked"
+    fi
+fi
+
+echo ""
+echo "📋 AVAILABLE COMMANDS:"
+echo "  🛑 Emergency pause: ./emergency-stop.sh"
+echo "  ▶️  Emergency resume: ./emergency-resume.sh"
+echo "  📊 Check status: ./check-dex-status.sh"
+echo ""
+
+# Show recent emergency log entries
+if [ -f "emergency.log" ]; then
+    echo "📜 RECENT EMERGENCY ACTIONS:"
+    tail -5 emergency.log
+fi

emergency-resume.sh

@@ -0,0 +1,130 @@
+#!/bin/bash
+# GalaSwap DEX Emergency Resume Script
+# Usage: ./emergency-resume.sh
+
+set -e  # Exit on any error
+
+echo "🔄 GALASWAP DEX EMERGENCY RESUME INITIATED"
+echo "=========================================="
+echo "Timestamp: $(date)"
+echo "Executed by: $(whoami)"
+echo "Host: $(hostname)"
+echo ""
+
+# Safety warnings
+echo "⚠️  CRITICAL SAFETY CHECKS:"
+echo "🔍 Have you verified the security issue is resolved?"
+echo "🧪 Have you tested the fix thoroughly?"
+echo "👥 Has the security team approved resume?"
+echo "📋 Have you documented the incident resolution?"
+echo ""
+
+# Multiple confirmation prompts for safety
+echo "🚨 WARNING: This will resume ALL DEX operations!"
+echo "Only proceed if you are absolutely certain it is safe."
+echo ""
+echo "Type 'RESUME' to confirm you want to resume operations:"
+read CONFIRMATION
+
+if [ "$CONFIRMATION" != "RESUME" ]; then
+    echo "❌ Resume cancelled - confirmation not received"
+    exit 1
+fi
+
+echo ""
+echo "Final confirmation: Resume DEX operations now? (y/N)"
+read FINAL_CONFIRMATION
+
+if [ "$FINAL_CONFIRMATION" != "y" ] && [ "$FINAL_CONFIRMATION" != "Y" ]; then
+    echo "❌ Resume cancelled by user"
+    exit 1
+fi
+
+echo ""
+echo "🔄 Executing emergency resume..."
+
+# TODO: Replace these with your actual GalaChain connection details
+CHANNEL_NAME="product-channel"
+CHAINCODE_NAME="basic-product"
+PEER_ADDRESS="peer0.your-org.com:7051"
+
+# Method 1: Using gala-cli (if available)
+if command -v gala-cli &> /dev/null; then
+    echo "📡 Using gala-cli to resume DEX..."
+
+    gala-cli chaincode invoke \
+        --channel-name "$CHANNEL_NAME" \
+        --chaincode-name "$CHAINCODE_NAME" \
+        --function-name "resumeDex" \
+        --args "" \
+        --peer-addresses "$PEER_ADDRESS"
+
+    RESUME_RESULT=$?
+
+# Method 2: Using peer CLI (fallback)
+elif command -v peer &> /dev/null; then
+    echo "📡 Using peer CLI to resume DEX..."
+
+    peer chaincode invoke \
+        -o orderer.your-domain.com:7050 \
+        -C "$CHANNEL_NAME" \
+        -n "$CHAINCODE_NAME" \
+        --peerAddresses "$PEER_ADDRESS" \
+        -c "{\"function\":\"resumeDex\",\"Args\":[]}"
+
+    RESUME_RESULT=$?
+
+# Method 3: API call (if CLI tools not available)
+else
+    echo "📡 Using API call to resume DEX..."
+
+    # TODO: Replace with your actual API endpoint and auth
+    API_ENDPOINT="https://your-galachain-api.com/api/chaincode/invoke"
+    AUTH_TOKEN="your-admin-token"
+
+    curl -X POST "$API_ENDPOINT" \
+        -H "Content-Type: application/json" \
+        -H "Authorization: Bearer $AUTH_TOKEN" \
+        -d "{
+            \"chaincodeName\": \"$CHAINCODE_NAME\",
+            \"functionName\": \"resumeDex\",
+            \"args\": []
+        }" \
+        --fail \
+        --silent \
+        --show-error
+
+    RESUME_RESULT=$?
+fi
+
+# Check if resume was successful
+if [ $RESUME_RESULT -eq 0 ]; then
+    echo ""
+    echo "✅ DEX SUCCESSFULLY RESUMED!"
+    echo "🟢 All trading operations are now active"
+    echo ""
+    echo "📋 NEXT STEPS:"
+    echo "  1. 📊 Monitor system closely for 30 minutes"
+    echo "  2. 📱 Notify team of successful resume"
+    echo "  3. 📢 Update user communications"
+    echo "  4. 📝 Complete incident report"
+    echo "  5. 🔍 Review incident response process"
+    echo ""
+    echo "📈 Monitor: ./check-dex-status.sh"
+    echo ""
+
+    # Log the resume action
+    echo "$(date): EMERGENCY RESUME - By: $(whoami)" >> emergency.log
+
+else
+    echo ""
+    echo "❌ EMERGENCY RESUME FAILED!"
+    echo "🚨 DEX STATUS UNKNOWN - INVESTIGATE IMMEDIATELY"
+    echo ""
+    echo "🔄 IMMEDIATE ACTIONS:"
+    echo "  1. 📞 Contact technical team"
+    echo "  2. 🔍 Check system logs"
+    echo "  3. 🧪 Verify current pause status"
+    echo ""
+    exit 1
+fi

emergency-stop.sh

@@ -0,0 +1,128 @@
+#!/bin/bash
+# GalaSwap DEX Emergency Stop Script
+# Usage: ./emergency-stop.sh [reason]
+
+set -e  # Exit on any error
+
+echo "🚨 GALASWAP DEX EMERGENCY PAUSE INITIATED"
+echo "=========================================="
+echo "Timestamp: $(date)"
+echo "Executed by: $(whoami)"
+echo "Host: $(hostname)"
+
+# Get emergency reason
+if [ -n "$1" ]; then
+    REASON="$1"
+else
+    echo ""
+    echo "Enter emergency reason (or press Enter for default):"
+    read REASON
+fi
+
+# Set default reason if none provided
+if [ -z "$REASON" ]; then
+    REASON="EMERGENCY_STOP_$(date +%Y%m%d_%H%M%S)"
+fi
+
+echo ""
+echo "🔴 PAUSING DEX WITH REASON: $REASON"
+echo "⚠️  This will block ALL DEX operations immediately!"
+echo ""
+
+# Confirmation prompt
+echo "Continue with emergency pause? (y/N)"
+read CONFIRMATION
+
+if [ "$CONFIRMATION" != "y" ] && [ "$CONFIRMATION" != "Y" ]; then
+    echo "❌ Emergency pause cancelled by user"
+    exit 1
+fi
+
+echo ""
+echo "🔄 Executing emergency pause..."
+
+# TODO: Replace these with your actual GalaChain connection details
+CHANNEL_NAME="product-channel"
+CHAINCODE_NAME="basic-product"
+PEER_ADDRESS="peer0.your-org.com:7051"
+
+# Method 1: Using gala-cli (if available)
+if command -v gala-cli &> /dev/null; then
+    echo "📡 Using gala-cli to pause DEX..."
+
+    gala-cli chaincode invoke \
+        --channel-name "$CHANNEL_NAME" \
+        --chaincode-name "$CHAINCODE_NAME" \
+        --function-name "pauseDex" \
+        --args "\"$REASON\"" \
+        --peer-addresses "$PEER_ADDRESS"
+
+    PAUSE_RESULT=$?
+
+# Method 2: Using peer CLI (fallback)
+elif command -v peer &> /dev/null; then
+    echo "📡 Using peer CLI to pause DEX..."
+
+    peer chaincode invoke \
+        -o orderer.your-domain.com:7050 \
+        -C "$CHANNEL_NAME" \
+        -n "$CHAINCODE_NAME" \
+        --peerAddresses "$PEER_ADDRESS" \
+        -c "{\"function\":\"pauseDex\",\"Args\":[\"$REASON\"]}"
+
+    PAUSE_RESULT=$?
+
+# Method 3: API call (if CLI tools not available)
+else
+    echo "📡 Using API call to pause DEX..."
+
+    # TODO: Replace with your actual API endpoint and auth
+    API_ENDPOINT="https://your-galachain-api.com/api/chaincode/invoke"
+    AUTH_TOKEN="your-admin-token"
+
+    curl -X POST "$API_ENDPOINT" \
+        -H "Content-Type: application/json" \
+        -H "Authorization: Bearer $AUTH_TOKEN" \
+        -d "{
+            \"chaincodeName\": \"$CHAINCODE_NAME\",
+            \"functionName\": \"pauseDex\",
+            \"args\": [\"$REASON\"]
+        }" \
+        --fail \
+        --silent \
+        --show-error
+
+    PAUSE_RESULT=$?
+fi
+
+# Check if pause was successful
+if [ $PAUSE_RESULT -eq 0 ]; then
+    echo ""
+    echo "✅ DEX SUCCESSFULLY PAUSED!"
+    echo "🔴 All trading operations are now blocked"
+    echo ""
+    echo "📋 NEXT STEPS:"
+    echo "  1. 📱 Notify emergency team immediately"
+    echo "  2. 📊 Check system status and logs" 
+    echo "  3. 🔍 Begin incident investigation"
+    echo "  4. 📝 Document incident details"
+    echo "  5. 📢 Prepare user communication"
+    echo ""
+    echo "💡 To resume operations: ./emergency-resume.sh"
+    echo ""
+
+    # Log the emergency action
+    echo "$(date): EMERGENCY PAUSE - Reason: $REASON - By: $(whoami)" >> emergency.log
+
+else
+    echo ""
+    echo "❌ EMERGENCY PAUSE FAILED!"
+    echo "🚨 DEX MAY STILL BE OPERATIONAL - CRITICAL ISSUE"
+    echo ""
+    echo "🔄 IMMEDIATE ACTIONS:"
+    echo "  1. 📞 Contact technical team immediately"
+    echo "  2. 🔄 Try alternative pause method"
+    echo "  3. 🛑 Consider network-level intervention"
+    echo ""
+    exit 1
+fi

package.json

@@ -37,6 +37,7 @@
     "@gala-chain/client": "~2.3.4",
     "@gala-chain/test": "~2.3.4",
     "@trivago/prettier-plugin-sort-imports": "^4.3.0",
+    "@types/decimal.js": "^0.0.32",
     "@types/jest": "^29.5.12",
     "@types/node": "18.11.9",
     "@typescript-eslint/eslint-plugin": "^5.47.1",