extends: [[spectral:oas, recommended]]

rules:

  # SAP OData Naming Conventions
  sap-sd-path-odata-entity-set:
    description: SAP OData entity set paths should use PascalCase entity names (A_EntityName pattern)
    message: "{{description}} - {{path}} should follow SAP OData entity set naming (e.g. A_SalesOrder)"
    severity: warn
    given: "$.paths[*]~"
    then:
      function: pattern
      functionOptions:
        match: "^/[A-Z][A-Za-z_]+(\\/|\\{|$)"

  sap-sd-operation-id-camel-case:
    description: OperationIds should use camelCase
    message: "{{description}} - '{{value}}' should be camelCase"
    severity: error
    given: "$.paths[*][get,post,put,patch,delete].operationId"
    then:
      function: pattern
      functionOptions:
        match: "^[a-z][a-zA-Z0-9]*$"

  sap-sd-has-tags:
    description: All operations must have at least one tag
    message: "{{description}} - operation at {{path}} must include tags"
    severity: error
    given: "$.paths[*][get,post,put,patch,delete]"
    then:
      field: tags
      function: truthy

  sap-sd-has-operation-id:
    description: All operations must have an operationId
    message: "{{description}} - operation at {{path}} must have operationId"
    severity: error
    given: "$.paths[*][get,post,put,patch,delete]"
    then:
      field: operationId
      function: truthy

  sap-sd-has-summary:
    description: All operations must have a summary
    message: "{{description}} - operation at {{path}} must have summary"
    severity: error
    given: "$.paths[*][get,post,put,patch,delete]"
    then:
      field: summary
      function: truthy

  sap-sd-summary-title-case:
    description: Operation summaries must use Title Case
    message: "{{description}} - '{{value}}' should start with an uppercase letter"
    severity: warn
    given: "$.paths[*][get,post,put,patch,delete].summary"
    then:
      function: pattern
      functionOptions:
        match: "^[A-Z]"

  sap-sd-has-description:
    description: All operations should have a description
    message: "{{description}} - operation at {{path}} should have a description"
    severity: warn
    given: "$.paths[*][get,post,put,patch,delete]"
    then:
      field: description
      function: truthy

  sap-sd-get-response-200:
    description: GET operations must have a 200 response
    message: "{{description}} - GET operation at {{path}} must define a 200 response"
    severity: error
    given: "$.paths[*].get"
    then:
      field: responses.200
      function: truthy

  sap-sd-post-response-201:
    description: POST create operations should have a 201 or 200 response
    message: "{{description}} - POST operation at {{path}} should define a 200 or 201 response"
    severity: warn
    given: "$.paths[*].post"
    then:
      field: responses
      function: schema
      functionOptions:
        schema:
          type: object
          anyOf:
            - required: ["200"]
            - required: ["201"]

  sap-sd-delete-response-204:
    description: DELETE operations should return 204 No Content
    message: "{{description}} - DELETE operation at {{path}} should return 204"
    severity: warn
    given: "$.paths[*].delete"
    then:
      field: responses.204
      function: truthy

  sap-sd-odata-top-skip-params:
    description: SAP OData collection endpoints should support $top and $skip for pagination
    message: "{{description}} - Collection GET at {{path}} should support OData $top and $skip parameters"
    severity: warn
    given: "$.paths[?(!@property.match(/\\{/))].get.parameters[*].name"
    then:
      function: enumeration
      functionOptions:
        values:
          - "$top"
          - "$skip"
          - "$filter"
          - "$select"
          - "$expand"
          - "$orderby"
          - "$inlinecount"
          - "$count"
          - "$format"

  sap-sd-info-contact:
    description: API info must include contact information
    message: "{{description}} - info.contact is required"
    severity: warn
    given: "$.info"
    then:
      field: contact
      function: truthy

  sap-sd-info-license:
    description: API info must include license information
    message: "{{description}} - info.license is required"
    severity: warn
    given: "$.info"
    then:
      field: license
      function: truthy

  sap-sd-servers-defined:
    description: API must define at least one server
    message: "{{description}} - servers array is required and must not be empty"
    severity: error
    given: "$"
    then:
      field: servers
      function: truthy

  sap-sd-security-defined:
    description: API must define security requirements
    message: "{{description}} - global security must be defined"
    severity: error
    given: "$"
    then:
      field: security
      function: truthy

  sap-sd-components-schemas-named:
    description: Schema component names should use PascalCase
    message: "{{description}} - schema '{{property}}' should use PascalCase"
    severity: warn
    given: "$.components.schemas[*]~"
    then:
      function: pattern
      functionOptions:
        match: "^[A-Z][A-Za-z0-9]*$"

  sap-sd-no-empty-paths:
    description: Path items must define at least one operation
    message: "{{description}} - path {{path}} must define at least one HTTP operation"
    severity: error
    given: "$.paths[*]"
    then:
      function: schema
      functionOptions:
        schema:
          type: object
          anyOf:
            - required: ["get"]
            - required: ["post"]
            - required: ["put"]
            - required: ["patch"]
            - required: ["delete"]