# Spectral ruleset for WISK.ai OpenAPI specifications.
# Derived from openapi/wisk-sales-upload-openapi.yml. Enforces the conventions
# observed in WISK's public sales-upload API: kebab/lower-case paths,
# snake_case schema properties, camelCase operationIds, Title Case tags, and
# header-based venue identification.
rules:

  # ── INFO / METADATA ────────────────────────────────────────────────────
  info-title-required:
    description: API must have a title.
    severity: error
    given: $.info
    then:
      field: title
      function: truthy
  info-title-wisk-prefix:
    description: API title should reference WISK.
    severity: info
    given: $.info.title
    then:
      function: pattern
      functionOptions:
        match: "(?i)wisk"
  info-description-required:
    description: API must have a description of reasonable length.
    severity: warn
    given: $.info
    then:
      field: description
      function: truthy
  info-version-required:
    description: API must declare a version.
    severity: error
    given: $.info
    then:
      field: version
      function: truthy

  # ── OPENAPI VERSION ────────────────────────────────────────────────────
  openapi-version-3:
    description: Specs must use OpenAPI 3.0.x.
    severity: warn
    given: $.openapi
    then:
      function: pattern
      functionOptions:
        match: "^3\\.0\\."

  # ── SERVERS ────────────────────────────────────────────────────────────
  servers-defined:
    description: At least one server must be defined.
    severity: error
    given: $.servers
    then:
      function: length
      functionOptions:
        min: 1
  servers-https:
    description: Server URLs must use HTTPS.
    severity: error
    given: $.servers[*].url
    then:
      function: pattern
      functionOptions:
        match: "^https://"

  # ── PATHS ──────────────────────────────────────────────────────────────
  paths-lowercase:
    description: Path segments must be lower-case (kebab-case), no upper-case.
    severity: warn
    given: $.paths[*]~
    then:
      function: pattern
      functionOptions:
        match: "^[a-z0-9/_{}-]+$"
  paths-no-trailing-slash:
    description: Paths must not end with a trailing slash.
    severity: warn
    given: $.paths[*]~
    then:
      function: pattern
      functionOptions:
        notMatch: ".+/$"

  # ── OPERATIONS ─────────────────────────────────────────────────────────
  operation-operationId-required:
    description: Every operation must have an operationId.
    severity: error
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: operationId
      function: truthy
  operation-operationId-camelcase:
    description: operationId should be camelCase.
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].operationId
    then:
      function: pattern
      functionOptions:
        match: "^[a-z][a-zA-Z0-9]+$"
  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-title-case:
    description: Operation summaries should be Title Case.
    severity: info
    given: $.paths[*][get,post,put,patch,delete].summary
    then:
      function: pattern
      functionOptions:
        match: "^[A-Z]"
  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-tags-required:
    description: Every operation must be tagged.
    severity: warn
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: tags
      function: truthy

  # ── TAGS ───────────────────────────────────────────────────────────────
  tag-global-defined:
    description: Global tags array should be defined with descriptions.
    severity: info
    given: $.tags[*]
    then:
      field: description
      function: truthy
  tag-title-case:
    description: Tag names should be Title Case.
    severity: warn
    given: $.tags[*].name
    then:
      function: pattern
      functionOptions:
        match: "^[A-Z][A-Za-z0-9]*( [A-Z][A-Za-z0-9]*)*$"

  # ── REQUEST BODIES ─────────────────────────────────────────────────────
  request-body-json:
    description: Request bodies should offer application/json.
    severity: warn
    given: $.paths[*][post,put,patch].requestBody.content
    then:
      field: application/json
      function: truthy
  post-requires-request-body:
    description: POST operations should declare a request body.
    severity: warn
    given: $.paths[*].post
    then:
      field: requestBody
      function: truthy

  # ── RESPONSES ──────────────────────────────────────────────────────────
  response-success-defined:
    description: Operations must define a 2xx success response.
    severity: error
    given: $.paths[*][get,post,put,patch,delete].responses
    then:
      field: "200"
      function: truthy
  response-description-required:
    description: Every response must have a description.
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].responses[*]
    then:
      field: description
      function: truthy

  # ── SCHEMAS ────────────────────────────────────────────────────────────
  schema-property-snake-case:
    description: Schema property names should be snake_case.
    severity: warn
    given: $.components.schemas[*].properties[*]~
    then:
      function: pattern
      functionOptions:
        match: "^[a-z][a-z0-9_]*$"
  schema-property-type-defined:
    description: Schema properties must declare a type or $ref.
    severity: warn
    given: $.components.schemas[*].properties[*]
    then:
      function: schema
      functionOptions:
        schema:
          anyOf:
            - required: [type]
            - required: ["$ref"]
  schema-property-description:
    description: Schema properties should have descriptions.
    severity: info
    given: $.components.schemas[*].properties[*]
    then:
      field: description
      function: truthy

  # ── SECURITY ───────────────────────────────────────────────────────────
  security-schemes-defined:
    description: Security schemes must be defined under components.
    severity: warn
    given: $.components
    then:
      field: securitySchemes
      function: truthy
  security-apikey-in-header:
    description: API key security schemes must be placed in the header.
    severity: warn
    given: $.components.securitySchemes[?(@.type=='apiKey')]
    then:
      field: in
      function: pattern
      functionOptions:
        match: "^header$"