meal-order-manager/template.yaml

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: >
  meal-order-manager — automated weekly meal ordering from Redefine Meals
  with employee order collection, Slack notifications, and payroll deduction reports.

Parameters:
  CustomDomain:
    Type: String
    Default: orders.seahaven.com
    Description: Custom domain for the order form (requires ACM cert)
  CertificateArn:
    Type: String
    Default: ''
    Description: ACM certificate ARN for the custom domain (us-east-1)
  PayrollEmail:
    Type: String
    Default: payroll@seahavenind.com
    Description: Email address for payroll deduction reports
  SenderEmail:
    Type: String
    Default: adam@seahavenind.com
    Description: SES verified sender email for payroll reports
Conditions:
  HasCustomDomain: !Not [!Equals [!Ref CertificateArn, '']]

Globals:
  Function:
    Runtime: python3.12
    Architectures:
      - arm64
    Timeout: 30
    MemorySize: 256
    Environment:
      Variables:
        TABLE_NAME: !Ref OrdersTable
        REPORTS_BUCKET: !Ref ReportsBucket
        SLACK_BOT_TOKEN_SECRET: meal-order-manager/slack-bot-token
        SLACK_CHANNEL_PARAM: /meal-order-manager/slack-channel-id
        FORM_URL: !If
          - HasCustomDomain
          - !Sub 'https://${CustomDomain}'
          - !Sub 'https://${FormDistribution.DomainName}'
    Layers:
      - !Ref SharedLayer

Resources:

  # ─── Shared Layer ───────────────────────────────────────────────

  SharedLayer:
    Type: AWS::Serverless::LayerVersion
    Properties:
      LayerName: meal-order-manager-shared
      ContentUri: src/shared/
      CompatibleRuntimes:
        - python3.12
      CompatibleArchitectures:
        - arm64
    Metadata:
      BuildMethod: python3.12
      BuildArchitecture: arm64

  # ─── DynamoDB ───────────────────────────────────────────────────

  OrdersTable:
    Type: AWS::DynamoDB::Table
    Properties:
      TableName: meal-order-manager-orders
      BillingMode: PAY_PER_REQUEST
      AttributeDefinitions:
        - AttributeName: PK
          AttributeType: S
        - AttributeName: SK
          AttributeType: S
      KeySchema:
        - AttributeName: PK
          KeyType: HASH
        - AttributeName: SK
          KeyType: RANGE
      TimeToLiveSpecification:
        AttributeName: ttl
        Enabled: true

  # ─── S3 Buckets ────────────────────────────────────────────────

  FormBucket:
    Type: AWS::S3::Bucket
    Properties:
      BucketName: !Sub 'meal-order-manager-form-${AWS::AccountId}'
      PublicAccessBlockConfiguration:
        BlockPublicAcls: true
        BlockPublicPolicy: true
        IgnorePublicAcls: true
        RestrictPublicBuckets: true
      LifecycleConfiguration:
        Rules:
          - Id: delete-old-archives
            Prefix: archive/
            Status: Enabled
            ExpirationInDays: 90
      Tags:
        - Key: Purpose
          Value: meal-order-form-hosting
        - Key: ManagedBy
          Value: meal-order-manager

  FormBucketPolicy:
    Type: AWS::S3::BucketPolicy
    Properties:
      Bucket: !Ref FormBucket
      PolicyDocument:
        Version: '2012-10-17'
        Statement:
          - Sid: AllowCloudFrontOAC
            Effect: Allow
            Principal:
              Service: cloudfront.amazonaws.com
            Action: s3:GetObject
            Resource: !Sub '${FormBucket.Arn}/*'
            Condition:
              StringEquals:
                AWS:SourceArn: !Sub 'arn:aws:cloudfront::${AWS::AccountId}:distribution/${FormDistribution}'

  ReportsBucket:
    Type: AWS::S3::Bucket
    Properties:
      BucketName: !Sub 'meal-order-manager-reports-${AWS::AccountId}'
      PublicAccessBlockConfiguration:
        BlockPublicAcls: true
        BlockPublicPolicy: true
        IgnorePublicAcls: true
        RestrictPublicBuckets: true
      LifecycleConfiguration:
        Rules:
          - Id: archive-old-reports
            Status: Enabled
            Transitions:
              - StorageClass: GLACIER_IR
                TransitionInDays: 90
      Tags:
        - Key: Purpose
          Value: meal-order-reports
        - Key: ManagedBy
          Value: meal-order-manager

  # ─── CloudFront ────────────────────────────────────────────────

  FormOAC:
    Type: AWS::CloudFront::OriginAccessControl
    Properties:
      OriginAccessControlConfig:
        Name: meal-order-manager-oac
        OriginAccessControlOriginType: s3
        SigningBehavior: always
        SigningProtocol: sigv4

  FormDistribution:
    Type: AWS::CloudFront::Distribution
    Properties:
      DistributionConfig:
        Enabled: true
        DefaultRootObject: index.html
        Comment: meal-order-manager form hosting
        PriceClass: PriceClass_100
        HttpVersion: http2and3
        Aliases: !If
          - HasCustomDomain
          - [!Ref CustomDomain]
          - !Ref AWS::NoValue
        ViewerCertificate: !If
          - HasCustomDomain
          - AcmCertificateArn: !Ref CertificateArn
            SslSupportMethod: sni-only
            MinimumProtocolVersion: TLSv1.2_2021
          - CloudFrontDefaultCertificate: true
        Origins:
          - Id: S3FormOrigin
            DomainName: !GetAtt FormBucket.RegionalDomainName
            OriginAccessControlId: !Ref FormOAC
            S3OriginConfig:
              OriginAccessIdentity: ''
        DefaultCacheBehavior:
          TargetOriginId: S3FormOrigin
          ViewerProtocolPolicy: redirect-to-https
          CachePolicyId: 4135ea2d-6df8-44a3-9df3-4b5a84be39ad  # CachingDisabled
          Compress: true
          AllowedMethods:
            - GET
            - HEAD
          CachedMethods:
            - GET
            - HEAD
        CustomErrorResponses:
          - ErrorCode: 403
            ResponseCode: 200
            ResponsePagePath: /index.html

  # ─── API Gateway ───────────────────────────────────────────────

  OrderApi:
    Type: AWS::Serverless::HttpApi
    Properties:
      StageName: $default
      # CORS only allows the production domain. For local development, use the
      # Flask dev server (app.py) which proxies API requests and doesn't enforce CORS.
      CorsConfiguration:
        AllowOrigins:
          - !If
            - HasCustomDomain
            - !Sub 'https://${CustomDomain}'
            - !Sub 'https://${FormDistribution.DomainName}'
        AllowMethods:
          - GET
          - POST
          - OPTIONS
        AllowHeaders:
          - Content-Type
          - x-api-key
        MaxAge: 3600

  # ─── Lambda Functions ──────────────────────────────────────────

  SubmitOrderFunction:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: meal-order-manager-submit-order
      Handler: handler.lambda_handler
      CodeUri: functions/submit_order/
      MemorySize: 128
      Timeout: 10
      Environment:
        Variables:
          FORM_API_KEY_SECRET: meal-order-manager/form-api-key
          SLACK_NOTIFIER_ARN: !GetAtt SlackNotifierFunction.Arn
          GOOGLE_CLIENT_ID_PARAM: /meal-order-manager/google-client-id
      Policies:
        - DynamoDBCrudPolicy:
            TableName: !Ref OrdersTable
        - Statement:
            - Effect: Allow
              Action: secretsmanager:GetSecretValue
              Resource: !Sub 'arn:aws:secretsmanager:${AWS::Region}:${AWS::AccountId}:secret:meal-order-manager/*'
            - Effect: Allow
              Action: lambda:InvokeFunction
              Resource: !GetAtt SlackNotifierFunction.Arn
            - Effect: Allow
              Action: ssm:GetParameter
              Resource: !Sub 'arn:aws:ssm:${AWS::Region}:${AWS::AccountId}:parameter/meal-order-manager/*'
      Events:
        SubmitOrder:
          Type: HttpApi
          Properties:
            ApiId: !Ref OrderApi
            Path: /api/submit-order
            Method: POST
        FormStatus:
          Type: HttpApi
          Properties:
            ApiId: !Ref OrderApi
            Path: /api/form-status/{week}
            Method: GET
        Roster:
          Type: HttpApi
          Properties:
            ApiId: !Ref OrderApi
            Path: /api/roster
            Method: GET

  CloseFormFunction:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: meal-order-manager-close-form
      Handler: handler.lambda_handler
      CodeUri: functions/close_form/
      MemorySize: 128
      Timeout: 30
      Policies:
        - DynamoDBCrudPolicy:
            TableName: !Ref OrdersTable
        - Statement:
            - Effect: Allow
              Action: lambda:InvokeFunction
              Resource: !GetAtt AggregateOrdersFunction.Arn
      Environment:
        Variables:
          AGGREGATE_FUNCTION_ARN: !GetAtt AggregateOrdersFunction.Arn
      # Both EST and EDT schedules fire every week year-round. The handler is
      # idempotent, so the "wrong timezone" firing is a harmless no-op.
      Events:
        CloseEST:
          Type: Schedule
          Properties:
            Schedule: cron(59 4 ? * FRI *)
            Description: 'Close form Thursday 11:59pm EST (04:59 UTC Friday)'
            Enabled: true
        CloseEDT:
          Type: Schedule
          Properties:
            Schedule: cron(59 3 ? * FRI *)
            Description: 'Close form Thursday 11:59pm EDT (03:59 UTC Friday)'
            Enabled: true

  AggregateOrdersFunction:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: meal-order-manager-aggregate-orders
      Handler: handler.lambda_handler
      CodeUri: functions/aggregate_orders/
      MemorySize: 256
      Timeout: 60
      Policies:
        - DynamoDBCrudPolicy:
            TableName: !Ref OrdersTable
        - S3CrudPolicy:
            BucketName: !Ref ReportsBucket
        - Statement:
            - Effect: Allow
              Action: lambda:InvokeFunction
              Resource: !GetAtt SlackNotifierFunction.Arn
      Environment:
        Variables:
          SLACK_NOTIFIER_ARN: !GetAtt SlackNotifierFunction.Arn

  SlackNotifierFunction:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: meal-order-manager-slack-notifier
      Handler: handler.lambda_handler
      CodeUri: functions/slack_notifier/
      MemorySize: 128
      Timeout: 30
      Policies:
        - DynamoDBReadPolicy:
            TableName: !Ref OrdersTable
        - Statement:
            - Effect: Allow
              Action: secretsmanager:GetSecretValue
              Resource: !Sub 'arn:aws:secretsmanager:${AWS::Region}:${AWS::AccountId}:secret:meal-order-manager/*'
            - Effect: Allow
              Action: ssm:GetParameter
              Resource: !Sub 'arn:aws:ssm:${AWS::Region}:${AWS::AccountId}:parameter/meal-order-manager/*'
      Events:
        ReminderEST:
          Type: Schedule
          Properties:
            Schedule: cron(0 15 ? * THU *)
            Description: 'DM reminders Thursday 10am EST (15:00 UTC)'
            Enabled: true
            Input: '{"event": "reminder"}'
        ReminderEDT:
          Type: Schedule
          Properties:
            Schedule: cron(0 14 ? * THU *)
            Description: 'DM reminders Thursday 10am EDT (14:00 UTC)'
            Enabled: true
            Input: '{"event": "reminder"}'

  SyncRosterFunction:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: meal-order-manager-sync-roster
      Handler: handler.lambda_handler
      CodeUri: functions/sync_roster/
      MemorySize: 128
      Timeout: 60
      Policies:
        - DynamoDBCrudPolicy:
            TableName: !Ref OrdersTable
        - Statement:
            - Effect: Allow
              Action: secretsmanager:GetSecretValue
              Resource: !Sub 'arn:aws:secretsmanager:${AWS::Region}:${AWS::AccountId}:secret:meal-order-manager/*'
            - Effect: Allow
              Action: ssm:GetParameter
              Resource: !Sub 'arn:aws:ssm:${AWS::Region}:${AWS::AccountId}:parameter/meal-order-manager/*'
      Events:
        SyncEST:
          Type: Schedule
          Properties:
            Schedule: cron(55 11 ? * MON *)
            Description: 'Sync roster Monday 6:55am EST (11:55 UTC) — before menu publish'
            Enabled: true
        SyncEDT:
          Type: Schedule
          Properties:
            Schedule: cron(55 10 ? * MON *)
            Description: 'Sync roster Monday 6:55am EDT (10:55 UTC) — before menu publish'
            Enabled: true

  EmailReportFunction:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: meal-order-manager-email-report
      Handler: handler.lambda_handler
      CodeUri: functions/email_report/
      MemorySize: 128
      Timeout: 30
      Environment:
        Variables:
          PAYROLL_EMAIL: !Ref PayrollEmail
          SENDER_EMAIL: !Ref SenderEmail
      Policies:
        - DynamoDBReadPolicy:
            TableName: !Ref OrdersTable
        - S3ReadPolicy:
            BucketName: !Ref ReportsBucket
        - Statement:
            - Effect: Allow
              Action:
                - ses:SendRawEmail
              Resource: '*'
      Events:
        PayrollEmailEST:
          Type: Schedule
          Properties:
            Schedule: cron(0 12 ? * MON *)
            Description: 'Email payroll deductions Monday 7am EST (12:00 UTC)'
            Enabled: true
        PayrollEmailEDT:
          Type: Schedule
          Properties:
            Schedule: cron(0 11 ? * MON *)
            Description: 'Email payroll deductions Monday 7am EDT (11:00 UTC)'
            Enabled: true

  # ─── CloudWatch Log Groups (60-day retention) ──────────────────

  SubmitOrderLogGroup:
    Type: AWS::Logs::LogGroup
    Properties:
      LogGroupName: !Sub '/aws/lambda/${SubmitOrderFunction}'
      RetentionInDays: 60

  CloseFormLogGroup:
    Type: AWS::Logs::LogGroup
    Properties:
      LogGroupName: !Sub '/aws/lambda/${CloseFormFunction}'
      RetentionInDays: 60

  AggregateOrdersLogGroup:
    Type: AWS::Logs::LogGroup
    Properties:
      LogGroupName: !Sub '/aws/lambda/${AggregateOrdersFunction}'
      RetentionInDays: 60

  SlackNotifierLogGroup:
    Type: AWS::Logs::LogGroup
    Properties:
      LogGroupName: !Sub '/aws/lambda/${SlackNotifierFunction}'
      RetentionInDays: 60

  EmailReportLogGroup:
    Type: AWS::Logs::LogGroup
    Properties:
      LogGroupName: !Sub '/aws/lambda/${EmailReportFunction}'
      RetentionInDays: 60

  SyncRosterLogGroup:
    Type: AWS::Logs::LogGroup
    Properties:
      LogGroupName: !Sub '/aws/lambda/${SyncRosterFunction}'
      RetentionInDays: 60

  # ─── SSM Parameters ────────────────────────────────────────────

  SlackChannelParam:
    Type: AWS::SSM::Parameter
    Properties:
      Name: /meal-order-manager/slack-channel-id
      Type: String
      Value: CHANGE_ME
      Description: Slack channel ID for meal order notifications

  # GoogleClientIdParam (/meal-order-manager/google-client-id) is managed
  # manually via AWS CLI since it varies per environment. Create it with:
  #   aws ssm put-parameter --name /meal-order-manager/google-client-id \
  #     --type String --value "<YOUR_GOOGLE_CLIENT_ID>"

Outputs:
  ApiUrl:
    Description: API Gateway endpoint URL
    Value: !Sub 'https://${OrderApi}.execute-api.${AWS::Region}.amazonaws.com'
  FormUrl:
    Description: Order form URL
    Value: !If
      - HasCustomDomain
      - !Sub 'https://${CustomDomain}'
      - !Sub 'https://${FormDistribution.DomainName}'
  DistributionId:
    Description: CloudFront distribution ID (for cache invalidation)
    Value: !Ref FormDistribution
  FormBucketName:
    Description: S3 bucket for form HTML
    Value: !Ref FormBucket
  ReportsBucketName:
    Description: S3 bucket for CSV reports
    Value: !Ref ReportsBucket
  OrdersTableName:
    Description: DynamoDB table name
    Value: !Ref OrdersTable
  SubmitOrderFunctionArn:
    Description: Submit Order Lambda ARN
    Value: !GetAtt SubmitOrderFunction.Arn
  CloseFormFunctionArn:
    Description: Close Form Lambda ARN
    Value: !GetAtt CloseFormFunction.Arn
  AggregateOrdersFunctionArn:
    Description: Aggregate Orders Lambda ARN
    Value: !GetAtt AggregateOrdersFunction.Arn
  SlackNotifierFunctionArn:
    Description: Slack Notifier Lambda ARN
    Value: !GetAtt SlackNotifierFunction.Arn
  SyncRosterFunctionArn:
    Description: Sync Roster Lambda ARN
    Value: !GetAtt SyncRosterFunction.Arn
  EmailReportFunctionArn:
    Description: Email Report Lambda ARN
    Value: !GetAtt EmailReportFunction.Arn