extends: ["spectral:oas"]
documentationUrl: https://trestle-documentation.corelogic.com/webapi.html
rules:
  trestle-info-contact:
    description: API info object must declare contact info pointing at Trestle support.
    given: "$.info"
    severity: error
    then:
      field: contact
      function: truthy
  trestle-server-https:
    description: Servers must use HTTPS.
    given: "$.servers[*].url"
    severity: error
    then:
      function: pattern
      functionOptions:
        match: "^https://"
  trestle-base-url:
    description: Base URL must reference the api.cotality.com Trestle OData endpoint.
    given: "$.servers[*].url"
    severity: error
    then:
      function: pattern
      functionOptions:
        match: "api.cotality.com/trestle/odata"
  trestle-oauth2-client-credentials:
    description: Security must be OAuth2 Client Credentials against the cotality token endpoint.
    given: "$.components.securitySchemes.oauth2ClientCredentials.flows.clientCredentials.tokenUrl"
    severity: error
    then:
      function: pattern
      functionOptions:
        match: "https://api.cotality.com/trestle/oidc/connect/token"
  trestle-reso-resources:
    description: API must expose the canonical RESO Web API resources.
    given: "$.paths"
    severity: warn
    then:
      function: schema
      functionOptions:
        schema:
          type: object
          required:
            - /Property
            - /Member
            - /Office
            - /Media
  trestle-odata-query-parameters:
    description: Property collection endpoint must accept the standard OData query parameters.
    given: "$.paths['/Property'].get.parameters[*].name"
    severity: warn
    then:
      function: enumeration
      functionOptions:
        values:
          - $filter
          - $select
          - $expand
          - $orderby
          - $top
          - $skip
          - $count
          - $apply
          - Replication
          - PrettyEnums
  trestle-operation-id:
    description: Every operation must define a camelCase operationId.
    given: "$.paths.*.*"
    severity: error
    then:
      field: operationId
      function: truthy
  trestle-summary-title-case:
    description: Operation summaries must be in Title Case.
    given: "$.paths.*.*.summary"
    severity: warn
    then:
      function: pattern
      functionOptions:
        match: "^([A-Z][a-zA-Z0-9]*)(\\s+[A-Z$][a-zA-Z0-9$()]*)*$"
  trestle-tags-required:
    description: Every operation must declare at least one tag.
    given: "$.paths.*.*"
    severity: error
    then:
      field: tags
      function: truthy
  trestle-pascal-case-resources:
    description: Resource paths must use PascalCase to match RESO Data Dictionary entity names.
    given: "$.paths"
    severity: warn
    then:
      field: "@key"
      function: pattern
      functionOptions:
        match: "^/([A-Z][a-zA-Z]+|\\$metadata)(\\(.*\\))?$"