# Spectral ruleset for the Lavu (POSLavu) API
# Enforces the conventions observed across the api-evangelist/lavu OpenAPI specs:
# POST-based table query interface, snake_case schema properties, form-urlencoded
# request bodies, XML responses, Title Case tags, and "Lavu " summary prefix.
rules:

  # ── INFO / METADATA ───────────────────────────────────────────────
  info-title-required:
    description: The API must declare a title.
    severity: error
    given: $.info
    then:
      field: title
      function: truthy
  info-title-lavu-prefix:
    description: The API title should reference Lavu.
    severity: warn
    given: $.info.title
    then:
      function: pattern
      functionOptions:
        match: "Lavu"
  info-description-required:
    description: The 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: The API must declare a version.
    severity: error
    given: $.info
    then:
      field: version
      function: truthy
  info-contact-required:
    description: The API should declare a contact.
    severity: warn
    given: $.info
    then:
      field: contact
      function: truthy

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

  # ── 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 (POSLavu request servers are HTTPS).
    severity: warn
    given: $.servers[*].url
    then:
      function: pattern
      functionOptions:
        match: "^https://"
  servers-description:
    description: Each server should be described.
    severity: info
    given: $.servers[*]
    then:
      field: description
      function: truthy

  # ── OPERATIONS ────────────────────────────────────────────────────
  operation-operationid-required:
    description: Every operation must declare an operationId.
    severity: error
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: operationId
      function: truthy
  operation-operationid-camel-case:
    description: operationId must be camelCase (e.g. queryTable, insertRecords).
    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-lavu-prefix:
    description: Operation summaries must begin with the provider name "Lavu".
    severity: warn
    given: $.paths[*][get,post,put,patch,delete].summary
    then:
      function: pattern
      functionOptions:
        match: "^Lavu "
  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 declare at least one tag.
    severity: warn
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: tags
      function: truthy
  operation-microcks-extension:
    description: Each operation should carry an x-microcks-operation extension for mocking.
    severity: info
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: x-microcks-operation
      function: truthy

  # ── TAGS ──────────────────────────────────────────────────────────
  tags-defined:
    description: A global tags array should be defined.
    severity: info
    given: $
    then:
      field: tags
      function: truthy
  tag-description-required:
    description: Each global tag should have a description.
    severity: info
    given: $.tags[*]
    then:
      field: description
      function: truthy
  tag-title-case:
    description: Tag names must be Title Case (e.g. Menu, Orders, Inventory).
    severity: warn
    given: $.tags[*].name
    then:
      function: pattern
      functionOptions:
        match: "^[A-Z][A-Za-z]+( [A-Z][A-Za-z]+)*$"

  # ── REQUEST BODIES ────────────────────────────────────────────────
  request-body-form-encoded:
    description: >-
      POSLavu accepts form-encoded request bodies; operations should expose an
      application/x-www-form-urlencoded media type.
    severity: warn
    given: $.paths[*][post,put,patch].requestBody.content
    then:
      field: application/x-www-form-urlencoded
      function: truthy
  request-body-schema:
    description: Request body media types must declare a schema.
    severity: warn
    given: $.paths[*][post,put,patch].requestBody.content[*]
    then:
      field: schema
      function: truthy

  # ── RESPONSES ─────────────────────────────────────────────────────
  response-2xx-required:
    description: Every operation must define a 2xx success response.
    severity: warn
    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
  response-xml-content:
    description: POSLavu returns XML; responses should expose an application/xml media type.
    severity: info
    given: $.paths[*][get,post,put,patch,delete].responses[*].content
    then:
      field: application/xml
      function: truthy

  # ── SCHEMAS — PROPERTY NAMING ─────────────────────────────────────
  schema-property-snake-case:
    description: >-
      Schema property names must be snake_case to match POSLavu table columns
      (acronym columns such as UPC are exempt).
    severity: warn
    given: $.components.schemas[*].properties.*~
    then:
      function: pattern
      functionOptions:
        match: "^[a-z][a-z0-9_]*$|^[A-Z]+$"
  schema-property-type:
    description: Every schema property must declare a type or a $ref.
    severity: warn
    given: $.components.schemas[*].properties[*]
    then:
      function: schema
      functionOptions:
        schema:
          anyOf:
            - required: ["type"]
            - required: ["$ref"]
  schema-property-description:
    description: Schema properties should carry a description.
    severity: info
    given: $.components.schemas[*].properties[*]
    then:
      field: description
      function: truthy
  schema-table-enum:
    description: >-
      The table selector should be constrained to the documented POSLavu tables
      via an enum.
    severity: info
    given: $.components.schemas.QueryRequest.properties.table
    then:
      field: enum
      function: truthy

  # ── SECURITY ──────────────────────────────────────────────────────
  security-scheme-defined:
    description: At least one security scheme must be defined.
    severity: warn
    given: $.components.securitySchemes
    then:
      function: truthy
  security-scheme-described:
    description: Each security scheme should be described.
    severity: info
    given: $.components.securitySchemes[*]
    then:
      field: description
      function: truthy
  operation-security-required:
    description: Every operation should declare its security requirements (dataname/key/token).
    severity: info
    given: $.paths[*][get,post,put,patch,delete]
    then:
      field: security
      function: truthy