rules:
  # INFO / METADATA
  info-title-required:
    description: API title must be present and include U.S. Steel branding.
    severity: error
    given: "$.info.title"
    then:
      function: truthy

  info-description-required:
    description: API info description must be present.
    severity: warn
    given: "$.info.description"
    then:
      function: minLength
      functionOptions:
        min: 50

  info-version-required:
    description: API version must be specified.
    severity: error
    given: "$.info.version"
    then:
      function: truthy

  # OPENAPI VERSION
  openapi-version:
    description: API specs should use OpenAPI 3.1.0.
    severity: warn
    given: "$.openapi"
    then:
      function: pattern
      functionOptions:
        match: "^3\\."

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

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

  servers-ussteel-domain:
    description: U.S. Steel API servers should use ussteel.com domain.
    severity: warn
    given: "$.servers[*].url"
    then:
      function: pattern
      functionOptions:
        match: "ussteel\\.com"

  # PATHS — NAMING CONVENTIONS
  paths-kebab-case:
    description: Path segments should use kebab-case.
    severity: warn
    given: "$.paths[*]~"
    then:
      function: pattern
      functionOptions:
        match: "^(/[a-z0-9-{}./]+)+$"

  paths-no-trailing-slash:
    description: Paths must not end with a trailing slash.
    severity: error
    given: "$.paths[*]~"
    then:
      function: pattern
      functionOptions:
        notMatch: "/$"

  # 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 summaries should start with U.S. Steel.
    severity: warn
    given: "$.paths[*][get,post,put,delete,patch].summary"
    then:
      function: pattern
      functionOptions:
        match: "^U\\.S\\. Steel "

  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: OperationIds should use camelCase.
    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 at least one tag.
    severity: error
    given: "$.paths[*][get,post,put,delete,patch].tags"
    then:
      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-schema-required:
    description: Every parameter must have a schema.
    severity: error
    given: "$.paths[*][get,post,put,delete,patch].parameters[*]"
    then:
      field: schema
      function: truthy

  parameter-pagination-standardized:
    description: Pagination should use limit and offset parameters.
    severity: info
    given: "$.paths[*][get,post,put,delete,patch].parameters[?(@.name == 'page')]"
    then:
      function: falsy

  # RESPONSES
  response-success-required:
    description: Every operation must define at least one 2xx response.
    severity: error
    given: "$.paths[*][get,post,put,delete,patch].responses"
    then:
      function: truthy

  response-401-required:
    description: All operations should define a 401 response for unauthorized access.
    severity: warn
    given: "$.paths[*][get,post,put,delete,patch].responses"
    then:
      field: "401"
      function: truthy

  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

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

  schema-property-description:
    description: Schema properties should have descriptions.
    severity: info
    given: "$.components.schemas[*].properties[*]"
    then:
      field: description
      function: truthy

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

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

  delete-returns-204:
    description: DELETE operations should return 204 No Content on success.
    severity: info
    given: "$.paths[*].delete.responses"
    then:
      field: "204"
      function: truthy

  # GENERAL QUALITY
  microcks-operation-present:
    description: Operations should include x-microcks-operation for mock compatibility.
    severity: info
    given: "$.paths[*][get,post,put,delete,patch]"
    then:
      field: x-microcks-operation
      function: truthy