Merge pull request #111 from Sea-Haven-Industries/feat/weekly-menu-scoped-role

feat(iam): add scoped OIDC role for the meal-order-manager weekly-menu job

oidc-deploy-roles.yaml

@@ -7,6 +7,10 @@ Parameters:
   GitHubOrg:
     Type: String
     Default: Sea-Haven-Industries
+    # No glob metacharacters: this value is interpolated into StringLike trust
+    # conditions, where a '*' override would silently open every role's trust
+    # to any GitHub org with a same-named repo.
+    AllowedPattern: "^[A-Za-z0-9-]+$"
   CreateOIDCProvider:
     Type: String
     Default: "false"
@@ -1376,6 +1380,78 @@ Resources:
                 Resource:
                   - !Sub arn:aws:iam::${AWS::AccountId}:role/cdk-hnb659fds-*
 
+  # Scoped runtime role for the meal-order-manager weekly-menu workflow
+  # (Monday scrape + order-form publish). Deliberately narrower than the
+  # repo's deploy role: the scheduled job reads stack outputs and app config,
+  # writes menu items and the published form, and invalidates the form's
+  # CloudFront path. It deploys nothing, so it gets no CloudFormation write
+  # actions, no PassRole, and no access outside the form bucket.
+  MealOrderManagerWeeklyMenuRole:
+    Type: AWS::IAM::Role
+    Properties:
+      RoleName: github-meal-order-manager-weekly-menu
+      AssumeRolePolicyDocument:
+        Version: "2012-10-17"
+        Statement:
+          - Effect: Allow
+            Principal:
+              Federated: !Sub arn:aws:iam::${AWS::AccountId}:oidc-provider/token.actions.githubusercontent.com
+            Action: sts:AssumeRoleWithWebIdentity
+            Condition:
+              # StringEquals (not the sibling roles' StringLike): no wildcard is
+              # intended, and job_workflow_ref pins this runtime role to the ONE
+              # workflow it serves — unlike the deploy roles, any main-branch
+              # workflow must NOT be able to mint these credentials.
+              StringEquals:
+                token.actions.githubusercontent.com:aud: sts.amazonaws.com
+                token.actions.githubusercontent.com:sub: !Sub repo:${GitHubOrg}/meal-order-manager:ref:refs/heads/main
+                token.actions.githubusercontent.com:job_workflow_ref: !Sub ${GitHubOrg}/meal-order-manager/.github/workflows/weekly-menu.yml@refs/heads/main
+      Policies:
+        - PolicyName: weekly-menu-publish
+          PolicyDocument:
+            Version: "2012-10-17"
+            Statement:
+              - Effect: Allow
+                Action:
+                  - cloudformation:DescribeStacks
+                Resource:
+                  - !Sub arn:aws:cloudformation:us-east-1:${AWS::AccountId}:stack/meal-order-manager/*
+              - Effect: Allow
+                Action:
+                  - secretsmanager:GetSecretValue
+                # Secrets Manager appends a random 6-char suffix to every secret
+                # ARN, so a name-based match needs a glob — but exactly six '?'
+                # (one char each), NOT '-*', which would also match any future
+                # secret extending the name (e.g. form-api-key-backup).
+                Resource:
+                  - !Sub arn:aws:secretsmanager:us-east-1:${AWS::AccountId}:secret:meal-order-manager/form-api-key-??????
+                  - !Sub arn:aws:secretsmanager:us-east-1:${AWS::AccountId}:secret:meal-order-manager/slack-bot-token-??????
+              - Effect: Allow
+                Action:
+                  - ssm:GetParameter
+                Resource:
+                  - !Sub arn:aws:ssm:us-east-1:${AWS::AccountId}:parameter/meal-order-manager/google-client-id
+                  - !Sub arn:aws:ssm:us-east-1:${AWS::AccountId}:parameter/meal-order-manager/slack-channel-id
+              - Effect: Allow
+                Action:
+                  - dynamodb:GetItem
+                  - dynamodb:PutItem
+                Resource:
+                  - !Sub arn:aws:dynamodb:us-east-1:${AWS::AccountId}:table/meal-order-manager-orders
+              - Effect: Allow
+                Action:
+                  - s3:PutObject
+                Resource:
+                  - !Sub arn:aws:s3:::meal-order-manager-form-${AWS::AccountId}/index.html
+                  - !Sub arn:aws:s3:::meal-order-manager-form-${AWS::AccountId}/archive/*.html
+              - Effect: Allow
+                Action:
+                  - cloudfront:CreateInvalidation
+                # Distribution ID = the meal-order-manager stack's DistributionId
+                # output (stable for the life of the distribution).
+                Resource:
+                  - !Sub arn:aws:cloudfront::${AWS::AccountId}:distribution/E314J1CJJ9ZTRA
+
 Outputs:
   LambdaExecutionBoundaryArn:
     Value: !Ref LambdaExecutionBoundary
@@ -1410,3 +1486,5 @@ Outputs:
     Value: !GetAtt ApmWoAnalysisDeployRole.Arn
   SeahavenAccountBaselineDeployRoleArn:
     Value: !GetAtt SeahavenAccountBaselineDeployRole.Arn
+  MealOrderManagerWeeklyMenuRoleArn:
+    Value: !GetAtt MealOrderManagerWeeklyMenuRole.Arn