# Allianz Engagement Survey API Spectral Rules
# Enforces API conventions for the Allianz Engagement Survey API

rules:

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

  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 define a version
    severity: error
    given: "$.info"
    then:
      field: version
      function: truthy

  # OPENAPI VERSION
  openapi-version-3:
    description: Specs must use OpenAPI 3.x
    severity: error
    given: "$.openapi"
    then:
      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
  paths-kebab-case:
    description: Path segments must use kebab-case
    severity: warn
    given: "$.paths"
    then:
      function: pattern
      functionOptions:
        match: "^(\\/([a-z0-9][a-z0-9-]*|\\{[a-zA-Z_]+\\}))+$"

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

  # 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-allianz-prefix:
    description: Summaries must start with "Allianz Engagement Survey"
    severity: warn
    given: "$.paths[*][get,post,put,patch,delete].summary"
    then:
      function: pattern
      functionOptions:
        match: "^Allianz Engagement Survey"

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

  # TAGS
  tags-defined:
    description: Global tags array should be defined
    severity: warn
    given: "$"
    then:
      field: tags
      function: truthy

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

  parameter-snake-case:
    description: Parameter names should use snake_case
    severity: warn
    given: "$.paths[*][get,post,put,patch,delete].parameters[*].name"
    then:
      function: pattern
      functionOptions:
        match: "^[a-z][a-z0-9_]*$"

  # PAGINATION
  list-operations-pagination:
    description: List operations should support limit and offset parameters
    severity: info
    given: "$.paths[*].get.operationId"
    then:
      function: pattern
      functionOptions:
        match: "^list"

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

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

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

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

  # HTTP METHOD CONVENTIONS
  get-no-request-body:
    description: GET operations must not have request bodies
    severity: error
    given: "$.paths[*].get"
    then:
      field: requestBody
      function: falsy

  # PRIVACY
  responses-anonymized:
    description: Response descriptions should note anonymization for response endpoints
    severity: info
    given: "$.paths[*].get.description"
    then:
      function: truthy