rules:

  # INFO / METADATA
  info-title-required:
    description: API info must have a title.
    severity: error
    given: "$.info"
    then:
      field: title
      function: truthy

  info-title-prefix:
    description: API title should begin with "Best Buy".
    severity: warn
    given: "$.info.title"
    then:
      function: pattern
      functionOptions:
        match: "^Best Buy"

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

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

  # OPENAPI VERSION
  openapi-version-3:
    description: All specs must use OpenAPI 3.0.x.
    severity: error
    given: "$"
    then:
      field: openapi
      function: pattern
      functionOptions:
        match: "^3\\.0\\."

  # SERVERS
  servers-defined:
    description: At least one server 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://"

  servers-bestbuy-domain:
    description: Server URLs should use the api.bestbuy.com domain.
    severity: warn
    given: "$.servers[*].url"
    then:
      function: pattern
      functionOptions:
        match: "bestbuy\\.com"

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

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

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

  operation-summary-title-case:
    description: Operation summaries should start with "Best Buy" and use Title Case.
    severity: warn
    given: "$.paths[*][get,post,put,patch,delete].summary"
    then:
      function: pattern
      functionOptions:
        match: "^Best Buy [A-Z]"

  operation-description-required:
    description: All operations must have a description.
    severity: error
    given: "$.paths[*][get,post,put,patch,delete,options,head]"
    then:
      field: description
      function: truthy

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

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

  operation-tags-required:
    description: All operations must have at least one tag.
    severity: error
    given: "$.paths[*][get,post,put,patch,delete,options,head]"
    then:
      field: tags
      function: truthy

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

  parameter-api-key-query:
    description: Best Buy API uses apiKey as a query parameter for authentication.
    severity: info
    given: "$.paths[*][get,post,put,patch,delete].parameters[?(@.name == 'apiKey')]"
    then:
      field: in
      function: enumeration
      functionOptions:
        values:
          - query

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

  # RESPONSES
  response-success-required:
    description: Operations must define at least one 2xx success response.
    severity: error
    given: "$.paths[*][get,post,put,patch,delete].responses"
    then:
      function: schema
      functionOptions:
        schema:
          oneOf:
            - required: ['200']
            - required: ['201']
            - required: ['204']

  response-401-unauthorized:
    description: Operations requiring authentication should define a 401 response.
    severity: warn
    given: "$.paths[*][get,post,put,patch,delete].responses"
    then:
      function: schema
      functionOptions:
        schema:
          required: ['401']

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

  response-json-content:
    description: Success responses should return application/json content.
    severity: warn
    given: "$.paths[*][get,post,put,patch,delete].responses['200','201'].content"
    then:
      function: truthy

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

  schema-properties-camel-case:
    description: Schema property names should use camelCase.
    severity: info
    given: "$.components.schemas[*].properties[*]~"
    then:
      function: pattern
      functionOptions:
        match: "^[a-z][a-zA-Z0-9]*$"

  schema-type-required:
    description: Schema definitions should have an explicit type.
    severity: warn
    given: "$.components.schemas[*]"
    then:
      field: type
      function: truthy

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

  security-scheme-description:
    description: Security schemes should have a description.
    severity: warn
    given: "$.components.securitySchemes[*]"
    then:
      field: description
      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
  operation-examples-encouraged:
    description: Operations should include examples for better developer experience.
    severity: info
    given: "$.paths[*][get,post,put,patch,delete].responses[*].content[*]"
    then:
      function: schema
      functionOptions:
        schema:
          anyOf:
            - required: ['example']
            - required: ['examples']

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