# Spectral ruleset for the Deliveroo Developer Portal APIs.
# Derived from the Order, Menu, Site, Catalogue, Picking, and Signature
# OpenAPI specifications in openapi/. Enforces the conventions observed
# across the Deliveroo Partner Platform, Retail Platform, and Signature suites.
rules:

  # ── INFO / METADATA ───────────────────────────────────────────────
  info-title-deliveroo-prefix:
    description: API title should start with "Deliveroo".
    severity: warn
    given: $.info.title
    then:
      function: pattern
      functionOptions:
        match: '^Deliveroo'
  info-description-required:
    description: API must have a non-trivial description.
    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
  info-contact-required:
    description: API should declare a contact.
    severity: warn
    given: $.info
    then:
      field: contact
      function: truthy

  # ── OPENAPI VERSION ───────────────────────────────────────────────
  openapi-version-303:
    description: Specs should target OpenAPI 3.0.3.
    severity: warn
    given: $.openapi
    then:
      function: pattern
      functionOptions:
        match: '^3\.0\.3$'

  # ── SERVERS ───────────────────────────────────────────────────────
  servers-defined:
    description: Servers must be defined.
    severity: error
    given: $
    then:
      field: servers
      function: truthy
  servers-https-only:
    description: Server URLs must use HTTPS.
    severity: error
    given: $.servers[*].url
    then:
      function: pattern
      functionOptions:
        match: '^https://'
  server-description-required:
    description: Each server should have a description.
    severity: warn
    given: $.servers[*]
    then:
      field: description
      function: truthy

  # ── PATHS — NAMING CONVENTIONS ────────────────────────────────────
  path-no-trailing-slash:
    description: Paths must not end with a trailing slash.
    severity: warn
    given: $.paths
    then:
      field: '@key'
      function: pattern
      functionOptions:
        notMatch: '.+/$'
  path-kebab-case-segments:
    description: Static path segments should be lowercase (kebab/snake), not camelCase.
    severity: warn
    given: $.paths
    then:
      field: '@key'
      function: pattern
      functionOptions:
        notMatch: '[A-Z]'
  path-versioned:
    description: Paths should carry a version segment (e.g. /v1/ or /v2/).
    severity: info
    given: $.paths
    then:
      field: '@key'
      function: pattern
      functionOptions:
        match: '/v[0-9]+/'

  # ── 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-camel-case:
    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: warn
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: summary
      function: truthy
  operation-summary-deliveroo-prefix:
    description: Operation summaries should begin with "Deliveroo".
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].summary
    then:
      function: pattern
      functionOptions:
        match: '^Deliveroo '
  operation-description-required:
    description: Every operation should have a description.
    severity: warn
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: description
      function: truthy
  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
  operation-microcks-extension:
    description: Operations should declare x-microcks-operation for mock compatibility.
    severity: info
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: x-microcks-operation
      function: truthy

  # ── PARAMETERS ────────────────────────────────────────────────────
  parameter-description-required:
    description: Every parameter must have a description.
    severity: warn
    given: $.paths[*][*].parameters[*]
    then:
      field: description
      function: truthy
  parameter-snake-case:
    description: Parameter names should be snake_case.
    severity: warn
    given: $.paths[*][*].parameters[*].name
    then:
      function: pattern
      functionOptions:
        match: '^[a-z][a-z0-9_]*$'
  parameter-schema-typed:
    description: Every parameter must declare a schema with a type.
    severity: warn
    given: $.paths[*][*].parameters[*].schema
    then:
      field: type
      function: truthy

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

  # ── RESPONSES ─────────────────────────────────────────────────────
  response-success-defined:
    description: Each operation must define at least one 2xx response.
    severity: error
    given: $.paths[*][get,post,put,patch,delete].responses
    then:
      function: schema
      functionOptions:
        schema:
          type: object
          anyOf:
            - required: ['200']
            - required: ['201']
            - required: ['204']
  response-description-required:
    description: Each response must have a description.
    severity: warn
    given: $.paths[*][*].responses[*]
    then:
      field: description
      function: truthy
  response-auth-error-defined:
    description: Authenticated operations should document a 401 response.
    severity: info
    given: $.paths[*][get,post,put,patch,delete].responses
    then:
      field: '401'
      function: truthy

  # ── SCHEMAS — PROPERTY NAMING ─────────────────────────────────────
  schema-property-snake-case:
    description: Schema property names should be snake_case.
    severity: warn
    given: $.components.schemas[*].properties
    then:
      field: '@key'
      function: pattern
      functionOptions:
        match: '^[a-z][a-z0-9_]*$'
  schema-property-typed:
    description: Schema properties should declare a type.
    severity: info
    given: $.components.schemas[*].properties[*]
    then:
      function: truthy

  # ── SECURITY ──────────────────────────────────────────────────────
  global-security-defined:
    description: A global security requirement must be defined.
    severity: warn
    given: $
    then:
      field: security
      function: truthy
  security-scheme-bearer:
    description: A bearer security scheme should be defined for OAuth tokens.
    severity: warn
    given: $.components.securitySchemes
    then:
      field: bearerAuth
      function: truthy

  # ── TAGS ──────────────────────────────────────────────────────────
  tag-title-case:
    description: Tag names should be Title Case.
    severity: warn
    given: $.tags[*].name
    then:
      function: pattern
      functionOptions:
        match: '^[A-Z]'

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