deploy.sh

#!/bin/bash

# AWS DevOps Agent Demo - Deployment Script
set -e

STACK_NAME="unicorn-rentals"
ENVIRONMENT="prod"
WEBHOOK_URL="${DEVOPS_AGENT_WEBHOOK_URL:-}"
WEBHOOK_SECRET="${DEVOPS_AGENT_WEBHOOK_SECRET:-}"

echo "🚀 Deploying Unicorn Rentals Environment"
echo "================================================"

# Check if AWS CLI is configured
if ! aws sts get-caller-identity > /dev/null 2>&1; then
    echo "❌ AWS CLI not configured. Please run 'aws configure' first."
    exit 1
fi

echo "✅ AWS CLI configured"

# Build parameters list
PARAMS="ParameterKey=Environment,ParameterValue=$ENVIRONMENT"
if [ -n "$WEBHOOK_URL" ] && [ -n "$WEBHOOK_SECRET" ]; then
    PARAMS="$PARAMS ParameterKey=DevOpsAgentWebhookUrl,ParameterValue=$WEBHOOK_URL ParameterKey=DevOpsAgentWebhookSecret,ParameterValue=$WEBHOOK_SECRET"
    echo "🔗 Webhook integration enabled"
else
    echo "ℹ️  No webhook configured (set DEVOPS_AGENT_WEBHOOK_URL and DEVOPS_AGENT_WEBHOOK_SECRET to enable)"
fi

# Check if stack exists and its status
STACK_STATUS=""
if aws cloudformation describe-stacks --stack-name $STACK_NAME > /dev/null 2>&1; then
    STACK_STATUS=$(aws cloudformation describe-stacks \
        --stack-name $STACK_NAME \
        --query 'Stacks[0].StackStatus' \
        --output text)
    echo "📋 Stack exists with status: $STACK_STATUS"
fi

# Handle different stack states
if [ "$STACK_STATUS" = "CREATE_FAILED" ] || [ "$STACK_STATUS" = "ROLLBACK_COMPLETE" ]; then
    echo "🗑️  Deleting failed stack..."
    aws cloudformation delete-stack --stack-name $STACK_NAME
    echo "⏳ Waiting for stack deletion..."
    aws cloudformation wait stack-delete-complete --stack-name $STACK_NAME
    STACK_STATUS=""
fi

if [ -z "$STACK_STATUS" ]; then
    # Create new stack
    echo "📦 Creating CloudFormation stack..."
    aws cloudformation create-stack \
        --stack-name $STACK_NAME \
        --template-body file://cloudformation-template.yaml \
        --capabilities CAPABILITY_NAMED_IAM \
        --parameters $PARAMS \
        --tags Key=Purpose,Value=DevOpsAgent Key=Environment,Value=$ENVIRONMENT Key=auto-delete,Value=never Key=auto-stop,Value=no
    
    echo "⏳ Waiting for stack creation to complete..."
    aws cloudformation wait stack-create-complete --stack-name $STACK_NAME
else
    # Update existing stack
    echo "🔄 Updating existing CloudFormation stack..."
    UPDATE_OUTPUT=$(aws cloudformation update-stack \
        --stack-name $STACK_NAME \
        --template-body file://cloudformation-template.yaml \
        --capabilities CAPABILITY_NAMED_IAM \
        --parameters $PARAMS 2>&1) || {
        if echo "$UPDATE_OUTPUT" | grep -q "No updates are to be performed"; then
            echo "✅ Stack is already up to date. No changes needed."
        else
            echo "❌ Stack update failed: $UPDATE_OUTPUT"
            exit 1
        fi
    }

    if echo "$UPDATE_OUTPUT" | grep -q "StackId"; then
        echo "⏳ Waiting for stack update to complete..."
        aws cloudformation wait stack-update-complete --stack-name $STACK_NAME
    fi
fi

# Get outputs
echo "📋 Retrieving stack outputs..."
API_URL=$(aws cloudformation describe-stacks \
    --stack-name $STACK_NAME \
    --query 'Stacks[0].Outputs[?OutputKey==`ApiGatewayUrl`].OutputValue' \
    --output text)

LAMBDA_NAME=$(aws cloudformation describe-stacks \
    --stack-name $STACK_NAME \
    --query 'Stacks[0].Outputs[?OutputKey==`LambdaFunctionName`].OutputValue' \
    --output text)

TABLE_NAME=$(aws cloudformation describe-stacks \
    --stack-name $STACK_NAME \
    --query 'Stacks[0].Outputs[?OutputKey==`DynamoDBTableName`].OutputValue' \
    --output text)

# Create environment file
cat > demo-environment.env << EOF
# Unicorn Rentals Environment Variables
export API_URL="$API_URL"
export LAMBDA_NAME="$LAMBDA_NAME"
export TABLE_NAME="$TABLE_NAME"
export STACK_NAME="$STACK_NAME"
EOF

echo "✅ Deployment complete!"
echo ""
echo "📊 Demo Environment Details:"
echo "   Stack Name: $STACK_NAME"
echo "   API URL: $API_URL"
echo "   Lambda Function: $LAMBDA_NAME"
echo "   DynamoDB Table: $TABLE_NAME"
echo ""
echo "🎯 Next Steps:"
echo "   1. Source environment: source demo-environment.env"
echo "   2. Install Python dependencies: pip install requests"
echo "   3. Run load generator: python continuous-load-generator.py --api-url \$API_URL --rps 15 --duration 10"
echo "   4. Monitor alarms and DevOps Agent investigations"
echo ""
echo "🧹 To cleanup: ./cleanup.sh"