# Spectral ruleset for the MealMe Food Ordering API
# Generated by the API Evangelist pipeline. Enforces the conventions observed
# across the MealMe OpenAPI specification (openapi/mealme-openapi.yml):
#   - snake_case query parameters and schema properties
#   - camelCase operationIds with verb prefixes
#   - Title Case tags defined in the global tags array
#   - API key carried in the Authorization header (not a query parameter)
#   - https server, monetary values expressed in integer cents
rules:

  # ── INFO / METADATA ───────────────────────────────────────────────
  info-title-mealme:
    description: API title should identify MealMe.
    severity: warn
    given: $.info
    then:
      field: title
      function: pattern
      functionOptions:
        match: "MealMe"
  info-description-required:
    description: Info object must have a non-empty description.
    severity: warn
    given: $.info
    then:
      field: description
      function: truthy
  info-version-required:
    description: Info object must declare a version.
    severity: error
    given: $.info
    then:
      field: version
      function: truthy
  info-contact-required:
    description: A contact should be provided.
    severity: info
    given: $.info
    then:
      field: contact
      function: truthy

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

  # ── 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://"
  server-is-mealme:
    description: The production server should be api.mealme.ai.
    severity: info
    given: $.servers[*]
    then:
      field: url
      function: pattern
      functionOptions:
        match: "api\\.mealme\\.ai"

  # ── 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-no-query-string:
    description: Path keys must not contain query strings.
    severity: error
    given: $.paths[*]~
    then:
      function: pattern
      functionOptions:
        notMatch: "\\?"
  paths-lowercase:
    description: Path segments use lowercase letters, digits, underscores, slashes, and braces.
    severity: warn
    given: $.paths[*]~
    then:
      function: pattern
      functionOptions:
        match: "^[a-z0-9_/{}]+$"

  # ── 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-description-required:
    description: Every operation must have a description.
    severity: warn
    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.
    severity: warn
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: operationId
      function: pattern
      functionOptions:
        match: "^[a-z][a-zA-Z0-9]+$"
  operation-summary-title-case:
    description: Summaries should start with a capital letter.
    severity: info
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: summary
      function: pattern
      functionOptions:
        match: "^[A-Z]"
  operation-tags-required:
    description: Every operation must be tagged.
    severity: warn
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: tags
      function: truthy

  # ── TAGS ──────────────────────────────────────────────────────────
  global-tags-defined:
    description: Specs should declare a global tags array.
    severity: info
    given: $
    then:
      field: tags
      function: truthy
  tag-has-description:
    description: Each global tag should have a description.
    severity: info
    given: $.tags[*]
    then:
      field: description
      function: truthy
  tag-title-case:
    description: Tags should use Title Case (each word capitalized).
    severity: warn
    given: $.tags[*]
    then:
      field: name
      function: pattern
      functionOptions:
        match: "^[A-Z][A-Za-z]*( [A-Z][A-Za-z]*)*$"

  # ── PARAMETERS ────────────────────────────────────────────────────
  parameter-snake-case:
    description: Parameter names should be snake_case.
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].parameters[*]
    then:
      field: name
      function: pattern
      functionOptions:
        match: "^[a-z][a-z0-9_]*$"
  parameter-has-schema:
    description: Parameters must declare a schema.
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].parameters[*]
    then:
      field: schema
      function: truthy
  parameter-no-api-key-in-query:
    description: API keys must travel in the Authorization header, never as a query parameter.
    severity: error
    given: $.paths[*][get,post,put,patch,delete].parameters[?(@.in=='query')]
    then:
      field: name
      function: pattern
      functionOptions:
        notMatch: "(?i)(api[_-]?key|authorization|token)"

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

  # ── RESPONSES ─────────────────────────────────────────────────────
  response-2xx-required:
    description: Every operation must define a success (2xx) response.
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].responses
    then:
      field: "200"
      function: truthy
  response-401-documented:
    description: Authenticated operations should document a 401 response.
    severity: info
    given: $.paths[*][get,post,put,patch,delete].responses
    then:
      field: "401"
      function: truthy
  response-has-description:
    description: Each response must have a description.
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].responses[*]
    then:
      field: description
      function: truthy

  # ── SCHEMAS — PROPERTY NAMING ─────────────────────────────────────
  schema-property-snake-case:
    description: Schema property names should be snake_case (underscore-prefixed identifiers like _id allowed).
    severity: warn
    given: $.components.schemas[*].properties[*]~
    then:
      function: pattern
      functionOptions:
        match: "^_?[a-z][a-z0-9_]*$"
  schema-property-typed:
    description: Each schema property should declare a type or $ref.
    severity: info
    given: $.components.schemas[*].properties[*]
    then:
      function: schema
      functionOptions:
        schema:
          anyOf:
            - required: [type]
            - required: ["$ref"]

  # ── SECURITY ──────────────────────────────────────────────────────
  global-security-defined:
    description: A global security requirement should be declared.
    severity: warn
    given: $
    then:
      field: security
      function: truthy
  security-scheme-api-key-header:
    description: The API key security scheme must be an apiKey carried in the header.
    severity: warn
    given: $.components.securitySchemes[*]
    then:
      field: type
      function: pattern
      functionOptions:
        match: "apiKey"
  security-scheme-authorization-header:
    description: The API key header should be named Authorization.
    severity: info
    given: $.components.securitySchemes[?(@.in=='header')]
    then:
      field: name
      function: pattern
      functionOptions:
        match: "Authorization"

  # ── 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 ───────────────────────────────────────────────
  examples-encouraged:
    description: Operations are encouraged to include examples for mocking.
    severity: info
    given: $.paths[*][post,put,patch].requestBody.content.application/json
    then:
      function: schema
      functionOptions:
        schema:
          anyOf:
            - required: [example]
            - required: [examples]