# Olo API Spectral Ruleset
# Opinionated rules derived from Olo's documented Ordering, Rails, and Promotions
# API surfaces (github.com/ololabs/dev-support-code-samples and
# github.com/ololabs/promotions-sdk). Enforces Olo's signature-auth, versioned
# path, camelCase operationId, and Title Case tag conventions.
rules:

  # ── INFO / METADATA ──────────────────────────────────────────────
  info-title-required:
    description: API must have a title.
    severity: error
    given: $.info
    then:
      field: title
      function: truthy
  info-title-olo-prefix:
    description: API title should begin with "Olo".
    severity: warn
    given: $.info.title
    then:
      function: pattern
      functionOptions:
        match: "^Olo"
  info-description-required:
    description: API must have a meaningful description (min 40 chars).
    severity: warn
    given: $.info
    then:
      field: description
      function: length
      functionOptions:
        min: 40
  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: info
    given: $.info
    then:
      field: contact
      function: truthy

  # ── OPENAPI VERSION ──────────────────────────────────────────────
  openapi-version-3-1:
    description: Specs should use OpenAPI 3.1.x.
    severity: warn
    given: $.openapi
    then:
      function: pattern
      functionOptions:
        match: "^3\\.1\\."

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

  # ── 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-lowercase:
    description: Path segments should be lowercase (Olo uses lowercase resource paths).
    severity: warn
    given: $.paths.*~
    then:
      function: pattern
      functionOptions:
        match: "^[a-z0-9/_.{}-]+$"
  paths-no-query-string:
    description: Paths must not contain query strings.
    severity: error
    given: $.paths.*~
    then:
      function: pattern
      functionOptions:
        notMatch: "\\?"

  # ── OPERATIONS ───────────────────────────────────────────────────
  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-title-case:
    description: Operation summaries should be Title Case.
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].summary
    then:
      function: pattern
      functionOptions:
        match: "^[A-Z]"
  operation-description-required:
    description: Every operation should have a description.
    severity: info
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: description
      function: truthy
  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 (Olo convention, e.g. createAccount).
    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

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

  # ── PARAMETERS ───────────────────────────────────────────────────
  parameter-description-required:
    description: Parameters should have descriptions.
    severity: warn
    given: $.paths[*][*].parameters[*]
    then:
      field: description
      function: truthy
  parameter-camelcase:
    description: Parameter names should be camelCase (Olo convention, e.g. membershipNumber).
    severity: info
    given: $.paths[*][*].parameters[*].name
    then:
      function: pattern
      functionOptions:
        match: "^[a-zA-Z][a-zA-Z0-9]*$"

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

  # ── RESPONSES ────────────────────────────────────────────────────
  response-success-defined:
    description: Operations must define a successful (200/201/204) 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-unauthorized-defined:
    description: Signature-authorized operations should document a 401 response.
    severity: info
    given: $.paths[*][get,post,put,patch,delete].responses
    then:
      field: "401"
      function: truthy
  response-description-required:
    description: Every response must have a description.
    severity: warn
    given: $.paths[*][*].responses[*]
    then:
      field: description
      function: truthy

  # ── SCHEMAS — PROPERTY NAMING ────────────────────────────────────
  schema-property-camelcase:
    description: Schema property names should be camelCase (Olo convention).
    severity: info
    given: $.components.schemas[*].properties.*~
    then:
      function: pattern
      functionOptions:
        match: "^[a-z][a-zA-Z0-9]*$"
  schema-description-required:
    description: Top-level component schemas should have descriptions.
    severity: info
    given: $.components.schemas[*]
    then:
      field: description
      function: truthy

  # ── SECURITY ─────────────────────────────────────────────────────
  security-scheme-defined:
    description: Security schemes must be defined.
    severity: warn
    given: $.components.securitySchemes
    then:
      function: truthy
  security-scheme-described:
    description: Security schemes should describe the auth mechanism (Olo uses HMAC signatures).
    severity: info
    given: $.components.securitySchemes[*]
    then:
      field: description
      function: truthy

  # ── 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

  # ── GENERAL QUALITY ──────────────────────────────────────────────
  external-docs-encouraged:
    description: APIs should link to external documentation (the Olo Developer Portal).
    severity: info
    given: $
    then:
      field: externalDocs
      function: truthy