# Mews API Spectral Ruleset
# Enforces the conventions observed across the Mews Connector and Booking Engine (Distributor)
# OpenAPI specifications: POST-only RPC-style operations, camelCase resource/action paths,
# PascalCase schema properties, Title Case tags, body-based ClientToken/AccessToken auth.
#
# Usage: spectral lint openapi/*.yml --ruleset rules/mews-systems-spectral-rules.yml
extends: []
rules:

  # ── INFO / METADATA ────────────────────────────────────────────────
  info-title-mews-prefix:
    description: API title should identify Mews.
    message: "info.title should start with 'Mews'."
    severity: warn
    given: $.info
    then:
      field: title
      function: pattern
      functionOptions:
        match: "^Mews"
  info-description-required:
    description: A meaningful info.description is required.
    severity: warn
    given: $.info
    then:
      field: description
      function: truthy
  info-description-min-length:
    description: info.description should be reasonably descriptive.
    severity: info
    given: $.info.description
    then:
      function: length
      functionOptions:
        min: 40
  info-version-required:
    description: info.version is required.
    severity: error
    given: $.info
    then:
      field: version
      function: truthy
  info-contact-required:
    description: A contact block should be present.
    severity: info
    given: $.info
    then:
      field: contact
      function: truthy

  # ── OPENAPI VERSION ────────────────────────────────────────────────
  openapi-version-3:
    description: Specs must be OpenAPI 3.0.x.
    message: "Use OpenAPI 3.0.x (Mews publishes 3.0.4)."
    severity: error
    given: $
    then:
      field: openapi
      function: pattern
      functionOptions:
        match: "^3\\.0\\."

  # ── 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[*]
    then:
      field: url
      function: pattern
      functionOptions:
        match: "^https://"
  servers-mews-host:
    description: Production server should be the Mews API host.
    severity: info
    given: $.servers[*]
    then:
      field: url
      function: pattern
      functionOptions:
        match: "mews(-demo)?\\.com"

  # ── PATHS — NAMING CONVENTIONS ─────────────────────────────────────
  paths-no-trailing-slash:
    description: Paths must not end with a trailing slash.
    severity: warn
    given: $.paths[*]~
    then:
      function: pattern
      functionOptions:
        notMatch: ".+/$"
  paths-versioned:
    description: Mews paths carry an API version segment (/v1/).
    message: "Path should include a version segment such as /v1/."
    severity: info
    given: $.paths[*]~
    then:
      function: pattern
      functionOptions:
        match: "/v\\d+/"
  paths-camelcase-actions:
    description: Mews uses camelCase resource and RPC-style action segments (e.g. /accountNotes/getAll).
    message: "Path segments should be camelCase resource/action names."
    severity: info
    given: $.paths[*]~
    then:
      function: pattern
      functionOptions:
        match: "^/[a-z0-9/{}.-]*[a-zA-Z0-9/{}.-]*$"

  # ── OPERATIONS ─────────────────────────────────────────────────────
  operation-post-only:
    description: Mews APIs are RPC-style and POST-only. Non-POST methods are unexpected.
    message: "Mews operations should use POST."
    severity: warn
    given: $.paths[*]
    then:
      field: post
      function: truthy
  operation-operationid-required:
    description: Every operation must have an operationId.
    severity: error
    given: $.paths[*][post,get,put,delete,patch]
    then:
      field: operationId
      function: truthy
  operation-operationid-pattern:
    description: operationId follows the Mews resource_action convention (e.g. accountNotes_getAll).
    severity: info
    given: $.paths[*][post,get,put,delete,patch]
    then:
      field: operationId
      function: pattern
      functionOptions:
        match: "^[a-zA-Z][a-zA-Z0-9]*_[a-zA-Z][a-zA-Z0-9]*$"
  operation-summary-required:
    description: Every operation must have a summary.
    severity: warn
    given: $.paths[*][post,get,put,delete,patch]
    then:
      field: summary
      function: truthy
  operation-summary-mews-prefix:
    description: Operation summaries are prefixed with 'Mews' and Title Cased.
    severity: info
    given: $.paths[*][post,get,put,delete,patch]
    then:
      field: summary
      function: pattern
      functionOptions:
        match: "^Mews "
  operation-description-required:
    description: Every operation must have a description.
    severity: warn
    given: $.paths[*][post,get,put,delete,patch]
    then:
      field: description
      function: truthy
  operation-tags-required:
    description: Every operation must have at least one tag.
    severity: warn
    given: $.paths[*][post,get,put,delete,patch]
    then:
      field: tags
      function: truthy
  operation-microcks-extension:
    description: Operations should carry x-microcks-operation for mock-server compatibility.
    severity: info
    given: $.paths[*][post,get,put,delete,patch]
    then:
      field: x-microcks-operation
      function: truthy

  # ── TAGS ───────────────────────────────────────────────────────────
  tag-title-case:
    description: Tags use Title Case (e.g. "Account Notes", "Reservation Groups").
    severity: info
    given: $.tags[*]
    then:
      field: name
      function: pattern
      functionOptions:
        match: "^[A-Z][A-Za-z0-9]*( [A-Z][A-Za-z0-9]*)*$"

  # ── REQUEST BODIES ─────────────────────────────────────────────────
  request-body-on-post:
    description: POST operations should declare a request body (Mews passes all input in the body).
    severity: warn
    given: $.paths[*].post
    then:
      field: requestBody
      function: truthy
  request-body-json:
    description: Request bodies must offer application/json.
    severity: warn
    given: $.paths[*][post,put,patch].requestBody.content
    then:
      field: application/json
      function: truthy

  # ── RESPONSES ──────────────────────────────────────────────────────
  response-200-defined:
    description: Operations must define a 200 response.
    severity: warn
    given: $.paths[*][post,get,put,delete,patch].responses
    then:
      field: "200"
      function: defined
  response-401-defined:
    description: Operations should define a 401 (authentication) response.
    severity: info
    given: $.paths[*][post,get,put,delete,patch].responses
    then:
      field: "401"
      function: defined
  response-429-defined:
    description: Operations should define a 429 response (Mews enforces 200 requests / 30s per AccessToken).
    severity: info
    given: $.paths[*][post,get,put,delete,patch].responses
    then:
      field: "429"
      function: defined
  response-json-content:
    description: Success responses should return application/json.
    severity: info
    given: $.paths[*][post,get,put,delete,patch].responses.200.content
    then:
      field: application/json
      function: truthy

  # ── SCHEMAS — PROPERTY NAMING ──────────────────────────────────────
  schema-property-pascalcase:
    description: Mews schema properties are PascalCase (e.g. AccountId, ServiceOrders).
    message: "Schema property names should be PascalCase."
    severity: info
    given: $.components.schemas[*].properties[*]~
    then:
      function: pattern
      functionOptions:
        match: "^[A-Z][A-Za-z0-9]*$"
  schema-type-defined:
    description: Top-level component schemas should declare a type or composition keyword.
    severity: info
    given: $.components.schemas[*]
    then:
      function: schema
      functionOptions:
        schema:
          anyOf:
            - required: [type]
            - required: [allOf]
            - required: [oneOf]
            - required: [anyOf]
            - required: [$ref]
            - required: [enum]

  # ── SECURITY ───────────────────────────────────────────────────────
  security-schemes-defined:
    description: components.securitySchemes must define the Mews token credentials.
    severity: warn
    given: $.components
    then:
      field: securitySchemes
      function: truthy
  security-global-defined:
    description: A global security requirement should be declared.
    severity: info
    given: $
    then:
      field: security
      function: truthy
  security-mews-tokens:
    description: Mews auth uses ClientToken and AccessToken (supplied in the request body).
    severity: info
    given: $.components.securitySchemes
    then:
      field: MewsClientToken
      function: truthy

  # ── GENERAL QUALITY ────────────────────────────────────────────────
  no-empty-descriptions:
    description: Descriptions must not be empty when present.
    severity: warn
    given: $..description
    then:
      function: truthy
  deprecation-documented:
    description: Deprecated operations should be flagged with deprecated:true.
    severity: info
    given: $.paths[*][post,get,put,delete,patch]
    then:
      field: deprecated
      function: defined