rules:
  # INFO / METADATA
  info-title-prefix:
    description: API title must start with "Amazon" or "AWS"
    severity: warn
    given: "$.info.title"
    then:
      function: pattern
      functionOptions:
        match: "^(Amazon|AWS) "

  info-description-required:
    description: Info object must have a description
    severity: error
    given: "$.info"
    then:
      field: description
      function: truthy

  info-version-required:
    description: Info object must have a version
    severity: error
    given: "$.info"
    then:
      field: version
      function: truthy

  # OPENAPI VERSION
  openapi-version:
    description: Must use OpenAPI 3.x
    severity: error
    given: "$"
    then:
      field: openapi
      function: pattern
      functionOptions:
        match: "^3\\."

  # SERVERS
  servers-required:
    description: Servers must be defined
    severity: error
    given: "$"
    then:
      field: servers
      function: truthy

  servers-https:
    description: Server URLs must use HTTPS
    severity: error
    given: "$.servers[*].url"
    then:
      function: pattern
      functionOptions:
        match: "^https://"

  # OPERATIONS
  operation-summary-required:
    description: Every operation must have a summary
    severity: error
    given: "$.paths[*][get,post,put,delete,patch]"
    then:
      field: summary
      function: truthy

  operation-summary-prefix:
    description: Operation summary must start with "Amazon"
    severity: warn
    given: "$.paths[*][get,post,put,delete,patch].summary"
    then:
      function: pattern
      functionOptions:
        match: "^Amazon "

  operation-description-required:
    description: Every operation must have a description
    severity: warn
    given: "$.paths[*][get,post,put,delete,patch]"
    then:
      field: description
      function: truthy

  operation-id-required:
    description: Every operation must have an operationId
    severity: error
    given: "$.paths[*][get,post,put,delete,patch]"
    then:
      field: operationId
      function: truthy

  operation-id-camel-case:
    description: OperationId must use PascalCase
    severity: warn
    given: "$.paths[*][get,post,put,delete,patch].operationId"
    then:
      function: pattern
      functionOptions:
        match: "^[A-Z][a-zA-Z0-9]+$"

  operation-tags-required:
    description: Every operation must have tags
    severity: warn
    given: "$.paths[*][get,post,put,delete,patch]"
    then:
      field: tags
      function: truthy

  # PARAMETERS
  parameter-description-required:
    description: Every parameter must have a description
    severity: warn
    given: "$.paths[*][get,post,put,delete,patch].parameters[*]"
    then:
      field: description
      function: truthy

  parameter-name-snake-case:
    description: Parameter names should use camelCase or snake_case
    severity: info
    given: "$.paths[*][get,post,put,delete,patch].parameters[*].name"
    then:
      function: pattern
      functionOptions:
        match: "^[a-z][a-zA-Z0-9_]*$"

  # RESPONSES
  response-success-required:
    description: Every operation must have a 2xx response
    severity: error
    given: "$.paths[*][get,post,put,delete,patch].responses"
    then:
      function: schema
      functionOptions:
        schema:
          type: object
          anyOf:
            - required: ["200"]
            - required: ["201"]
            - required: ["204"]

  response-description-required:
    description: Every response must have a description
    severity: error
    given: "$.paths[*][get,post,put,delete,patch].responses[*]"
    then:
      field: description
      function: truthy

  response-error-unauthorized:
    description: Operations should document 403 responses
    severity: info
    given: "$.paths[*][get,post,put,delete,patch].responses"
    then:
      field: "403"
      function: truthy

  # SCHEMAS
  schema-type-required:
    description: Schema properties should have a type defined
    severity: warn
    given: "$.components.schemas[*].properties[*]"
    then:
      function: schema
      functionOptions:
        schema:
          type: object
          anyOf:
            - required: ["type"]
            - required: ["$ref"]
            - required: ["allOf"]
            - required: ["oneOf"]
            - required: ["anyOf"]
            - required: ["enum"]

  schema-description-required:
    description: Top-level schemas should have a description
    severity: info
    given: "$.components.schemas[*]"
    then:
      field: description
      function: truthy

  # SECURITY
  security-schemes-defined:
    description: Security schemes must be defined in components
    severity: error
    given: "$"
    then:
      field: "components.securitySchemes"
      function: truthy

  # HTTP METHOD CONVENTIONS
  get-no-request-body:
    description: GET operations must not have a request body
    severity: error
    given: "$.paths[*].get"
    then:
      field: requestBody
      function: falsy

  delete-no-request-body:
    description: DELETE operations should not have a request body
    severity: warn
    given: "$.paths[*].delete"
    then:
      field: requestBody
      function: falsy

  # GENERAL QUALITY
  no-empty-descriptions:
    description: Descriptions must not be empty strings
    severity: error
    given: "$..description"
    then:
      function: pattern
      functionOptions:
        match: ".+"

  paths-kebab-case:
    description: Path segments should use kebab-case
    severity: info
    given: "$.paths"
    then:
      function: pattern
      functionOptions:
        match: "^(/[a-z0-9{}-]+)+$"

  tags-title-case:
    description: Tags in the global tags array should use Title Case
    severity: warn
    given: "$.tags[*].name"
    then:
      function: pattern
      functionOptions:
        match: "^[A-Z][a-zA-Z0-9 ]+$"