SAS Institute API Rules

# sas — Spectral ruleset (strengthened)
# Plain Spectral. Existing hand-authored rules preserved; measured rules added
# from this provider's own OpenAPI conventions by strengthen_ruleset.py,
# then self-validated against the spec.
#
# Provenance:
#   - servers-https-only: 100% of servers already https (error)
#   - path-params-casing: snake @ 100% (n=4)
#   - operationid-casing: camel @ 100% (n=16)
#   - schema-names-casing: pascal @ 100% (n=8)
#   - schema-properties-casing: snake @ 63% (n=30)
#   - security: global (root) — NOT emitting operation-security-required
#   - merge: kept 5 existing, added 6 measured, upgraded 0
#   - added: servers-https-only, path-params-casing, schema-names-casing, schema-properties-casing, security-schemes-defined, no-empty-descriptions
extends:
  - spectral:oas
rules:
  sas-tags-title-case:
    description: Tags should be in Title Case (e.g., Decisions, Reports)
    given: $.tags[*].name
    severity: warn
    then:
      function: pattern
      functionOptions:
        match: ^([A-Z][a-zA-Z0-9]*)( [A-Z][a-zA-Z0-9]*)*$
  sas-operation-id-camel-case:
    description: operationId should be camelCase
    given: $.paths.*.*.operationId
    severity: error
    then:
      function: pattern
      functionOptions:
        match: ^[a-z][a-zA-Z0-9]+$
  sas-summary-title-case:
    description: Operation summaries should use Title Case
    given: $.paths.*.*.summary
    severity: warn
    then:
      function: pattern
      functionOptions:
        match: ^[A-Z]
  sas-oauth-required:
    description: Operations should be secured via OAuth via SAS Logon
    given: $.paths.*.*
    severity: warn
    then:
      field: security
      function: truthy
  sas-vendor-media-type:
    description: SAS Viya uses application/vnd.sas.* vendor media types for resources
    given: $.paths.*.*.responses.*.content
    severity: info
    then:
      function: pattern
      functionOptions:
        match: application/vnd\\.sas\\.
  servers-https-only:
    description: Server URLs must use HTTPS.
    severity: error
    given: $.servers[*].url
    then:
      function: pattern
      functionOptions:
        match: ^https://
  path-params-casing:
    description: Path parameters should be snake_case (the dominant convention in this API).
    severity: warn
    given: $.paths[*].parameters[?(@.in=='path')].name
    then:
      function: casing
      functionOptions:
        type: snake
  schema-names-casing:
    description: Component schema names should be PascalCase (the dominant convention in this API).
    severity: warn
    given: $.components.schemas
    then:
      field: '@key'
      function: casing
      functionOptions:
        type: pascal
  schema-properties-casing:
    description: Schema properties should be snake_case (the dominant convention in this API).
    severity: info
    given: $.components.schemas[*].properties
    then:
      field: '@key'
      function: casing
      functionOptions:
        type: snake
  security-schemes-defined:
    description: Security schemes should be defined in components.
    severity: warn
    given: $.components
    then:
      field: securitySchemes
      function: truthy
  no-empty-descriptions:
    description: Descriptions must not be empty strings.
    severity: warn
    given: $..description
    then:
      function: truthy