# Vendr/Blissfully API Spectral Ruleset
# Enforces conventions observed in the Vendr Catalog API OpenAPI specification.

rules:

  # INFO / METADATA
  info-title-prefix:
    description: API title must start with "Vendr"
    severity: warn
    given: '$.info.title'
    then:
      function: pattern
      functionOptions:
        match: '^Vendr'

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

  info-version-required:
    description: Info object must have a version
    severity: error
    given: '$.info'
    then:
      field: version
      function: truthy

  # OPENAPI VERSION
  openapi-version:
    description: Must use OpenAPI 3.x
    severity: error
    given: '$'
    then:
      field: openapi
      function: pattern
      functionOptions:
        match: '^3\.'

  # 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://'

  # PATHS — NAMING CONVENTIONS
  paths-kebab-case:
    description: Path segments must use kebab-case
    severity: warn
    given: '$.paths[*]~'
    then:
      function: pattern
      functionOptions:
        match: '^(/[a-z0-9-]+|\{[a-z_]+\})+$'

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

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

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

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

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

  parameter-pagination-snake-case:
    description: Pagination parameter names should use snake_case
    severity: info
    given: '$.paths[*][get].parameters[*].name'
    then:
      function: pattern
      functionOptions:
        match: '^[a-z][a-z0-9_]*$'

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

  # RESPONSES
  response-success-required:
    description: Every operation must define a 2xx response
    severity: error
    given: '$.paths[*][get,post,put,patch,delete]'
    then:
      field: responses
      function: truthy

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

  response-429-rate-limit:
    description: Operations should define a 429 rate limit response
    severity: info
    given: '$.paths[*][get,post].responses'
    then:
      field: '429'
      function: truthy

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

  # SCHEMAS
  schema-property-snake-case:
    description: Schema property names must use snake_case
    severity: warn
    given: '$.components.schemas[*].properties[*]~'
    then:
      function: pattern
      functionOptions:
        match: '^[a-z][a-z0-9_]*$'

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

  # SECURITY
  security-schemes-defined:
    description: At least one security scheme must be defined
    severity: error
    given: '$.components'
    then:
      field: securitySchemes
      function: truthy

  security-global-defined:
    description: Global security must be defined
    severity: warn
    given: '$'
    then:
      field: security
      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

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

  # PAGINATION
  list-operations-pagination:
    description: List operations should support limit and offset pagination
    severity: info
    given: '$.paths[*].get'
    then:
      field: parameters
      function: truthy