extends: spectral:oas
rules:
  bentley-itwin-base-url:
    description: All iTwin Platform APIs must use api.bentley.com as the host
    message: "Server URL '{{value}}' must use https://api.bentley.com host"
    given: "$.servers[*].url"
    severity: error
    then:
      function: pattern
      functionOptions:
        match: "^https://api\\.bentley\\.com"

  bentley-oauth2-required:
    description: iTwin Platform APIs must define OAuth2 (Bentley IMS) as the security scheme
    message: "Security scheme 'OAuth2' (Bentley IMS) must be defined"
    given: "$.components.securitySchemes.OAuth2"
    severity: error
    then:
      function: truthy

  bentley-operation-id-required:
    description: All iTwin operations must define an operationId
    message: "Operation at {{path}} is missing operationId"
    given: "$.paths[*][get,post,put,patch,delete]"
    severity: error
    then:
      field: operationId
      function: truthy

  bentley-operation-id-pascal-case:
    description: iTwin operationIds use PascalCase (e.g., GetIModel, CreateChangeset)
    message: "operationId '{{value}}' should use PascalCase"
    given: "$.paths[*][get,post,put,patch,delete].operationId"
    severity: warn
    then:
      function: pattern
      functionOptions:
        match: "^[A-Z][a-zA-Z0-9]+$"

  bentley-tags-required:
    description: All iTwin operations must include at least one tag
    message: "Operation '{{path}}' must include a tag"
    given: "$.paths[*][get,post,put,patch,delete]"
    severity: warn
    then:
      field: tags
      function: truthy

  bentley-summary-title-case:
    description: iTwin operation summaries should use Title Case
    message: "Summary '{{value}}' should use Title Case"
    given: "$.paths[*][get,post,put,patch,delete].summary"
    severity: warn
    then:
      function: pattern
      functionOptions:
        match: "^[A-Z][a-zA-Z0-9]*( [A-Z][a-zA-Z0-9]*)*"

  bentley-response-200-or-201:
    description: All iTwin operations must define a 2xx success response
    message: "Operation at {{path}} must define a 2xx response"
    given: "$.paths[*][get,post,put,patch,delete].responses"
    severity: error
    then:
      function: schema
      functionOptions:
        schema:
          type: object
          anyOf:
            - required: ["200"]
            - required: ["201"]
            - required: ["202"]
            - required: ["204"]

  bentley-uuid-path-params:
    description: iTwin resource id path parameters should be uuid-typed
    message: "Path parameter '{{property}}' that ends in 'Id' should declare format=uuid"
    given: "$.paths[*].parameters[?(@.in=='path' && @.name=~/Id$/)].schema"
    severity: warn
    then:
      field: format
      function: pattern
      functionOptions:
        match: "^uuid$"

  bentley-itwin-id-required:
    description: Top-level collection GETs should accept iTwinId query parameter for scoping
    message: "Collection endpoint at {{path}} should support iTwinId query parameter"
    given: "$.paths[?(@property==/)].get.parameters[?(@.name=='iTwinId')]"
    severity: info
    then:
      function: truthy

  bentley-external-docs-required:
    description: iTwin Platform API specs should reference developer.bentley.com via externalDocs
    message: "Spec should include externalDocs pointing to developer.bentley.com"
    given: "$.externalDocs.url"
    severity: warn
    then:
      function: pattern
      functionOptions:
        match: "^https://developer\\.bentley\\.com/"

  bentley-info-contact-required:
    description: Spec info.contact must reference Bentley Developer Relations
    message: "info.contact must be defined and reference Bentley Developer Relations"
    given: "$.info.contact"
    severity: warn
    then:
      field: name
      function: pattern
      functionOptions:
        match: "Bentley"

  bentley-license-required:
    description: Spec info.license should reference the Bentley Developer Portal terms
    message: "info.license should point to https://developer.bentley.com/legal/"
    given: "$.info.license.url"
    severity: info
    then:
      function: pattern
      functionOptions:
        match: "^https://developer\\.bentley\\.com/legal/"