AWSTemplateFormatVersion: "2010-09-09"
Transform: AWS::Serverless-2016-10-31
Description: LedgerFlow B2B Accounting — local SAM development

Globals:
  Function:
    Runtime: nodejs20.x
    Architectures: [arm64]
    MemorySize: 512
    Timeout: 30
    Environment:
      Variables:
        NODE_ENV: dev
        AWS_NODEJS_CONNECTION_REUSE_ENABLED: "1"
        POS_TABLE: ledgerflow-pos
        INVOICES_TABLE: ledgerflow-invoices
        EDI_TX_TABLE: ledgerflow-edi-transactions
        SESSIONS_TABLE: ledgerflow-sessions
        SETTINGS_TABLE: ledgerflow-settings
        PURCHASE_ORDERS_TABLE: purchase-orders
        EDI_INPUT_BUCKET: !Sub "ledgerflow-edi-input-${AWS::AccountId}"
        EDI_OUTPUT_BUCKET: !Sub "ledgerflow-edi-output-${AWS::AccountId}"
        GOOGLE_CLIENT_ID: ""
        ALLOWED_ORIGIN: "*"
        ALLOWED_DOMAINS: ""
        EDI_PARTNERSHIP_ID: ""
        EDI_TRANSFORMER_ID: ""
        EDI_SENDER_ID: ""
        EDI_RECEIVER_ID: ""

Resources:
  # ── API Gateway ──────────────────────────────────────────────────────────────

  LedgerFlowAPI:
    Type: AWS::Serverless::HttpApi
    Properties:
      StageName: $default
      CorsConfiguration:
        AllowOrigins:
          - "*"
          - "http://localhost:3000"
        AllowMethods:
          - GET
          - POST
          - PUT
          - PATCH
          - DELETE
          - OPTIONS
        AllowHeaders:
          - Content-Type
          - Authorization
        MaxAge: 86400
      Auth:
        DefaultAuthorizer: GoogleJWT
        Authorizers:
          GoogleJWT:
            AuthorizationScopes: []
            FunctionArn: !GetAtt AuthorizerFn.Arn
            FunctionInvokeRole: !GetAtt AuthorizerInvokeRole.Arn
            Identity:
              Headers:
                - Authorization
            AuthorizerPayloadFormatVersion: "2.0"
            EnableSimpleResponses: true

  # IAM role allowing API Gateway to invoke the authorizer Lambda
  AuthorizerInvokeRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: "2012-10-17"
        Statement:
          - Effect: Allow
            Principal:
              Service: apigateway.amazonaws.com
            Action: sts:AssumeRole
      Policies:
        - PolicyName: InvokeAuthorizerFn
          PolicyDocument:
            Version: "2012-10-17"
            Statement:
              - Effect: Allow
                Action: lambda:InvokeFunction
                Resource: !GetAtt AuthorizerFn.Arn

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

  AuthorizerFn:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: ledgerflow-authorizer
      Handler: index.handler
      CodeUri: lambdas/authorizer/
    Metadata:
      BuildMethod: esbuild
      BuildProperties:
        Minify: false
        Sourcemap: true
        EntryPoints: [index.js]
        External: []

  AuthFn:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: ledgerflow-auth
      Handler: index.handler
      CodeUri: lambdas/auth/
      Events:
        AuthConfig:
          Type: HttpApi
          Properties:
            ApiId: !Ref LedgerFlowAPI
            Path: /auth/config
            Method: ANY
            Auth:
              Authorizer: NONE
        AuthConfigProxy:
          Type: HttpApi
          Properties:
            ApiId: !Ref LedgerFlowAPI
            Path: /auth/config/{proxy+}
            Method: ANY
            Auth:
              Authorizer: NONE
        AuthMe:
          Type: HttpApi
          Properties:
            ApiId: !Ref LedgerFlowAPI
            Path: /auth/me
            Method: ANY
            Auth:
              Authorizer: NONE
        AuthMeProxy:
          Type: HttpApi
          Properties:
            ApiId: !Ref LedgerFlowAPI
            Path: /auth/me/{proxy+}
            Method: ANY
            Auth:
              Authorizer: NONE
        AuthLogout:
          Type: HttpApi
          Properties:
            ApiId: !Ref LedgerFlowAPI
            Path: /auth/logout
            Method: ANY
            Auth:
              Authorizer: NONE
        AuthLogoutProxy:
          Type: HttpApi
          Properties:
            ApiId: !Ref LedgerFlowAPI
            Path: /auth/logout/{proxy+}
            Method: ANY
            Auth:
              Authorizer: NONE
    Metadata:
      BuildMethod: esbuild
      BuildProperties:
        Minify: false
        Sourcemap: true
        EntryPoints: [index.js]
        External: []

  POsFn:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: ledgerflow-pos
      Handler: index.handler
      CodeUri: lambdas/pos/
      Events:
        POs:
          Type: HttpApi
          Properties:
            ApiId: !Ref LedgerFlowAPI
            Path: /pos
            Method: ANY
        POsProxy:
          Type: HttpApi
          Properties:
            ApiId: !Ref LedgerFlowAPI
            Path: /pos/{proxy+}
            Method: ANY
    Metadata:
      BuildMethod: esbuild
      BuildProperties:
        Minify: false
        Sourcemap: true
        EntryPoints: [index.js]
        External: []

  InvoicesFn:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: ledgerflow-invoices
      Handler: index.handler
      CodeUri: lambdas/invoices/
      Events:
        Invoices:
          Type: HttpApi
          Properties:
            ApiId: !Ref LedgerFlowAPI
            Path: /invoices
            Method: ANY
        InvoicesProxy:
          Type: HttpApi
          Properties:
            ApiId: !Ref LedgerFlowAPI
            Path: /invoices/{proxy+}
            Method: ANY
    Metadata:
      BuildMethod: esbuild
      BuildProperties:
        Minify: false
        Sourcemap: true
        EntryPoints: [index.js]
        External: []

  EDIFn:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: ledgerflow-edi
      Handler: index.handler
      CodeUri: lambdas/edi/
      Timeout: 60
      Events:
        EDI:
          Type: HttpApi
          Properties:
            ApiId: !Ref LedgerFlowAPI
            Path: /edi
            Method: ANY
        EDIProxy:
          Type: HttpApi
          Properties:
            ApiId: !Ref LedgerFlowAPI
            Path: /edi/{proxy+}
            Method: ANY
    Metadata:
      BuildMethod: esbuild
      BuildProperties:
        Minify: false
        Sourcemap: true
        EntryPoints: [index.js]
        External: []

  POSyncFn:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: ledgerflow-po-sync
      Handler: index.handler
      CodeUri: lambdas/po-sync/
    Metadata:
      BuildMethod: esbuild
      BuildProperties:
        Minify: false
        Sourcemap: true
        EntryPoints: [index.js]
        External: []

  SettingsFn:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: ledgerflow-settings
      Handler: index.handler
      CodeUri: lambdas/settings/
      Events:
        Settings:
          Type: HttpApi
          Properties:
            ApiId: !Ref LedgerFlowAPI
            Path: /settings
            Method: ANY
        SettingsProxy:
          Type: HttpApi
          Properties:
            ApiId: !Ref LedgerFlowAPI
            Path: /settings/{proxy+}
            Method: ANY
    Metadata:
      BuildMethod: esbuild
      BuildProperties:
        Minify: false
        Sourcemap: true
        EntryPoints: [index.js]
        External: []

Outputs:
  ApiUrl:
    Description: Local API Gateway endpoint
    Value: !Sub "https://${LedgerFlowAPI}.execute-api.${AWS::Region}.amazonaws.com"