rules:

  # INFO / METADATA
  info-title-format:
    description: API title must follow the Workday Recruiting naming pattern
    severity: warn
    given: $.info.title
    then:
      function: pattern
      functionOptions:
        match: "^Workday Recruiting .+"

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

  info-description-min-length:
    description: API description should be at least 50 characters
    severity: warn
    given: $.info.description
    then:
      function: length
      functionOptions:
        min: 50

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

  info-version-format:
    description: Version should follow the v{n} or v{n}.{n} pattern (e.g. v1, v41.2)
    severity: warn
    given: $.info.version
    then:
      function: pattern
      functionOptions:
        match: "^v[0-9]+(\\.[0-9]+)?$"

  info-contact-required:
    description: API info must include contact information
    severity: warn
    given: $.info
    then:
      field: contact
      function: truthy

  info-terms-of-service:
    description: API info should reference Workday terms of service
    severity: info
    given: $.info
    then:
      field: termsOfService
      function: truthy

  external-docs-required:
    description: APIs should provide external documentation links
    severity: info
    given: $
    then:
      field: externalDocs
      function: truthy

  # OPENAPI VERSION
  openapi-version:
    description: APIs must use OpenAPI 3.1.x
    severity: error
    given: $.openapi
    then:
      function: pattern
      functionOptions:
        match: "^3\\.1\\."

  # SERVERS
  servers-defined:
    description: At least one server must be defined
    severity: error
    given: $
    then:
      field: servers
      function: truthy

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

  servers-description-required:
    description: All servers should include a description
    severity: warn
    given: $.servers[*]
    then:
      field: description
      function: truthy

  servers-versioned-path:
    description: Server URLs should include a version segment (e.g. /v41.2)
    severity: warn
    given: $.servers[*].url
    then:
      function: pattern
      functionOptions:
        match: "/v[0-9]+(\\.[0-9]+)?(/|$)"

  servers-recruiting-path:
    description: Server URLs should include the /recruiting/ API segment
    severity: info
    given: $.servers[*].url
    then:
      function: pattern
      functionOptions:
        match: "/recruiting/"

  # PATHS — NAMING CONVENTIONS
  paths-camel-case:
    description: Path segments must use camelCase resource names (Workday convention)
    severity: warn
    given: $.paths[*]~
    then:
      function: pattern
      functionOptions:
        match: "^(/[a-z][a-zA-Z0-9]*(/\\{[a-zA-Z][a-zA-Z0-9]*\\})?)+$"

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

  paths-no-query-strings:
    description: Paths must not contain query strings
    severity: error
    given: $.paths[*]~
    then:
      function: pattern
      functionOptions:
        notMatch: "\\?"

  paths-plural-resources:
    description: Top-level collection paths should use plural resource nouns
    severity: info
    given: $.paths[*]~
    then:
      function: pattern
      functionOptions:
        match: "^/[a-z][a-zA-Z0-9]*(s|es|ies|Statuses|Sites|Categories|Brands|Regions|Packages|Postings|Settings|Calendars)(/.*)?$"

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

  operation-summary-prefix:
    description: Operation summaries should start with "Workday Recruiting"
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].summary
    then:
      function: pattern
      functionOptions:
        match: "^Workday Recruiting "

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

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

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

  operation-id-verb-prefix:
    description: operationId should start with a recognized recruiting verb
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].operationId
    then:
      function: pattern
      functionOptions:
        match: "^(list|get|create|update|edit|delete|close|manage|add|assess|refer|move|offer|post|unpost|submit|initiate|import|schedule)[A-Z]"

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

  # TAGS
  global-tags-defined:
    description: Top-level tags array should be defined for documentation grouping
    severity: warn
    given: $
    then:
      field: tags
      function: truthy

  tags-title-case:
    description: Global tag names should use Title Case (multi-word allowed)
    severity: warn
    given: $.tags[*].name
    then:
      function: pattern
      functionOptions:
        match: "^[A-Z][A-Za-z]*((-|\\s)[A-Z][A-Za-z]*)*$"

  tags-description-required:
    description: All global tags must have descriptions
    severity: warn
    given: $.tags[*]
    then:
      field: description
      function: truthy

  # PARAMETERS
  parameter-description-required:
    description: All parameters must have descriptions
    severity: error
    given: "#Parameter"
    then:
      field: description
      function: truthy

  parameter-camel-case:
    description: Parameter names should use camelCase (Workday convention)
    severity: warn
    given: "#Parameter"
    then:
      field: name
      function: pattern
      functionOptions:
        match: "^[a-z][a-zA-Z0-9]*$"

  parameter-schema-required:
    description: All parameters must define a schema
    severity: error
    given: "#Parameter"
    then:
      field: schema
      function: truthy

  parameter-pagination-limit:
    description: Pagination should use a "limit" parameter, not page-size or perPage
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].parameters[?(@.in == 'query')].name
    then:
      function: pattern
      functionOptions:
        notMatch: "^(pageSize|perPage|page_size|per_page|size)$"

  parameter-pagination-offset:
    description: Pagination should use an "offset" parameter, not page or pageNumber
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].parameters[?(@.in == 'query')].name
    then:
      function: pattern
      functionOptions:
        notMatch: "^(page|pageNumber|page_number|pageNo)$"

  parameter-no-api-key-in-query:
    description: API keys must not be passed as query parameters
    severity: error
    given: $.paths[*][get,post,put,patch,delete].parameters[?(@.in == 'query')].name
    then:
      function: pattern
      functionOptions:
        notMatch: "(?i)(api[_-]?key|apikey|access[_-]?token|token)"

  resource-id-path-param-naming:
    description: Resource identifier path parameters should be named "id" (Workday WID convention)
    severity: info
    given: $.paths[*][get,post,put,patch,delete].parameters[?(@.in == 'path' && @.name =~ /id$/i)].name
    then:
      function: enumeration
      functionOptions:
        values:
          - id

  # REQUEST BODIES
  request-body-json-content:
    description: Request bodies must support application/json content type
    severity: error
    given: $.paths[*][post,put,patch].requestBody.content
    then:
      field: application/json
      function: truthy

  request-body-schema-required:
    description: Request body content must reference a schema
    severity: warn
    given: $.paths[*][post,put,patch].requestBody.content[*]
    then:
      field: schema
      function: truthy

  # RESPONSES
  response-success-required:
    description: All operations must define at least one 2xx response
    severity: error
    given: $.paths[*][get,post,put,patch,delete].responses
    then:
      function: schema
      functionOptions:
        schema:
          type: object
          patternProperties:
            "^2[0-9][0-9]$": {}
          minProperties: 1

  response-401-required:
    description: Operations should define a 401 Unauthorized response
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].responses
    then:
      field: '401'
      function: truthy

  response-404-on-resource-get:
    description: GET operations on a single resource should define a 404 Not Found response
    severity: warn
    given: $.paths[?(@property.match(/\\{[a-zA-Z]+\\}$/))].get.responses
    then:
      field: '404'
      function: truthy

  response-400-on-mutations:
    description: POST/PUT/PATCH operations should define a 400 Bad Request response
    severity: warn
    given: $.paths[*][post,put,patch].responses
    then:
      field: '400'
      function: truthy

  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 must use application/json content type
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].responses['200','201','202'].content
    then:
      field: application/json
      function: truthy

  response-error-schema-fields:
    description: Reusable error responses should reference a schema with message/error fields
    severity: warn
    given: $.components.responses[*].content.application/json
    then:
      field: schema
      function: truthy

  # SCHEMAS — PROPERTY NAMING
  schema-property-camel-case:
    description: Schema property names must use camelCase (Workday convention)
    severity: warn
    given: $.components.schemas[*].properties[*]~
    then:
      function: pattern
      functionOptions:
        match: "^[a-z][a-zA-Z0-9]*$"

  schema-type-defined:
    description: Top-level schemas must define a type
    severity: warn
    given: $.components.schemas[*]
    then:
      field: type
      function: truthy

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

  schema-id-property-string:
    description: Resource id properties must be strings (Workday WID convention)
    severity: warn
    given: $.components.schemas[*].properties.id
    then:
      field: type
      function: enumeration
      functionOptions:
        values:
          - string

  schema-timestamps-date-time:
    description: createdOn, updatedOn, submittedOn, postedOn, scheduledOn, completedOn properties should use date-time format
    severity: warn
    given: $.components.schemas[*].properties[?(@property.match(/^(createdOn|updatedOn|submittedOn|postedOn|scheduledOn|completedOn|approvedOn|processedOn|startedAt|completedAt)$/))]
    then:
      field: format
      function: enumeration
      functionOptions:
        values:
          - date-time

  schema-recruiting-date-format:
    description: targetHireDate, targetEndDate, postingStartDate, postingEndDate, interviewDate, fromDate, toDate properties should use date format
    severity: warn
    given: $.components.schemas[*].properties[?(@property.match(/^(targetHireDate|targetEndDate|postingStartDate|postingEndDate|interviewDate|fromDate|toDate|startDate|endDate|effectiveDate)$/))]
    then:
      field: format
      function: enumeration
      functionOptions:
        values:
          - date

  collection-response-data-array:
    description: Collection (list) responses must include a data array property
    severity: warn
    given: $.paths[*].get.responses['200'].content.application/json.schema.properties
    then:
      field: data
      function: truthy

  collection-response-total:
    description: Collection (list) responses should include a total property indicating full result count
    severity: warn
    given: $.paths[*].get.responses['200'].content.application/json.schema.properties
    then:
      field: total
      function: truthy

  reference-schema-shape:
    description: Reference schema must have id and descriptor properties (Workday Reference convention)
    severity: warn
    given: $.components.schemas.Reference.properties
    then:
      field: descriptor
      function: truthy

  # SECURITY
  global-security-defined:
    description: Global security must be declared
    severity: error
    given: $
    then:
      field: security
      function: truthy

  security-schemes-defined:
    description: Security schemes must be defined under components
    severity: error
    given: $
    then:
      field: components.securitySchemes
      function: truthy

  security-oauth2-required:
    description: An oauth2 security scheme is required for Workday Recruiting APIs
    severity: error
    given: $.components.securitySchemes
    then:
      field: oauth2
      function: truthy

  security-oauth2-type:
    description: The oauth2 security scheme must declare type oauth2
    severity: error
    given: $.components.securitySchemes.oauth2
    then:
      field: type
      function: enumeration
      functionOptions:
        values:
          - oauth2

  security-oauth2-flows:
    description: The oauth2 security scheme must define flows
    severity: error
    given: $.components.securitySchemes.oauth2
    then:
      field: flows
      function: truthy

  security-scheme-description:
    description: Security schemes must include 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

  post-has-request-body:
    description: POST operations should have a request body
    severity: warn
    given: $.paths[*].post
    then:
      field: requestBody
      function: truthy

  patch-has-request-body:
    description: PATCH operations must have a request body
    severity: error
    given: $.paths[*].patch
    then:
      field: requestBody
      function: truthy

  put-has-request-body:
    description: PUT operations must have a request body
    severity: error
    given: $.paths[*].put
    then:
      field: requestBody
      function: truthy

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

  examples-encouraged:
    description: Response and request examples improve developer experience
    severity: info
    given: $.paths[*][get,post,put,patch,delete].responses['200','201'].content.application/json
    then:
      field: examples
      function: truthy

  deprecation-documented:
    description: Deprecated operations should explain the migration path in their description
    severity: warn
    given: $.paths[*][?(@.deprecated == true)]
    then:
      field: description
      function: truthy