# Rentall Infrastructure

AWS CDK infrastructure for Rentall Lambda functions.

## Prerequisites

- Node.js 20+
- AWS CLI configured with appropriate credentials
- AWS CDK CLI (`npm install -g aws-cdk`)

## Setup

```bash
cd infrastructure/cdk
npm install
```

## Deploy

### Staging

```bash
npm run deploy:staging
```

### Production

```bash
npm run deploy:prod
```

## Environment Variables

The following environment variables should be set before deployment:

- `DATABASE_URL` - PostgreSQL connection string
- `CDK_DEFAULT_ACCOUNT` - AWS account ID
- `CDK_DEFAULT_REGION` - AWS region (defaults to us-east-1)

## Stacks

### ConditionCheckLambdaStack

Creates:
- Lambda function for condition check reminders
- EventBridge Scheduler group for per-rental schedules
- IAM roles for Lambda execution and Scheduler invocation
- Dead letter queue for failed invocations

## Outputs

After deployment, the following values are exported:

- `ConditionCheckLambdaArn-{env}` - Lambda function ARN
- `ConditionCheckScheduleGroup-{env}` - Schedule group name
- `ConditionCheckSchedulerRoleArn-{env}` - Scheduler IAM role ARN
- `ConditionCheckDLQUrl-{env}` - Dead letter queue URL

## Useful Commands

- `npm run synth` - Synthesize CloudFormation template
- `npm run diff` - Compare deployed stack with current state
- `npm run destroy` - Destroy all stacks