extends:
  - "spectral:oas"

formats:
  - "oas3"

rules:
  stella-info-title:
    description: "OpenAPI info.title must be present"
    message: "Add a descriptive `info.title`"
    given: "$.info.title"
    severity: error
    then:
      function: truthy

  stella-info-version:
    description: "OpenAPI info.version must be present"
    message: "Set `info.version` (SemVer or release tag)"
    given: "$.info.version"
    severity: error
    then:
      function: truthy

  stella-servers-https:
    description: "Servers should use https"
    given: "$.servers[*].url"
    severity: warn
    then:
      function: pattern
      functionOptions:
        match: "^https://"

  operation-operationId-required:
    description: "Every operation must have an operationId"
    message: "Add an `operationId` for this operation"
    given: "$.paths[*][*]"
    severity: error
    then:
      field: operationId
      function: truthy

  stella-2xx-response-examples:
    description: "Every 2xx response must include at least one example"
    message: "Add an example or examples block to 2xx responses"
    given: "$.paths[*][*].responses[?(@property.match(/^2\\d\\d$/))].content.*"
    severity: error
    then:
      function: schema
      functionOptions:
        schema:
          anyOf:
            - required: [examples]
            - required: [example]

  stella-pagination-params:
    description: "Collection GETs (list/search) must expose limit/cursor parameters"
    message: "Add limit/cursor parameters for paged collection endpoints"
    given: "$.paths[*][get]"
    severity: warn
    then:
      function: schema
      functionOptions:
        schema:
          type: object
          properties:
            operationId:
              type: string
          allOf:
            - if:
                properties:
                  operationId:
                    pattern: "([Ll]ist|[Ss]earch|[Qq]uery)"
              then:
                required: [parameters]
                properties:
                  parameters:
                    type: array
                    allOf:
                      - contains:
                          anyOf:
                            - required: ['$ref']
                              properties:
                                $ref:
                                  pattern: 'parameters/LimitParam$'
                            - required: [name, in]
                              properties:
                                name:
                                  const: limit
                                in:
                                  const: query
                      - contains:
                          anyOf:
                            - required: ['$ref']
                              properties:
                                $ref:
                                  pattern: 'parameters/CursorParam$'
                            - required: [name, in]
                              properties:
                                name:
                                  const: cursor
                                in:
                                  const: query

  stella-idempotency-header:
    description: "State-changing operations returning 201/202 should accept Idempotency-Key headers"
    message: "Add Idempotency-Key header parameter for idempotent submissions"
    given: "$.paths[*][?(@property.match(/^(post|put|patch)$/))]"
    severity: warn
    then:
      function: schema
      functionOptions:
        schema:
          type: object
          properties:
            responses:
              type: object
            parameters:
              type: array
          allOf:
            - if:
                properties:
                  responses:
                    type: object
                    anyOf:
                      - required: ['201']
                      - required: ['202']
              then:
                required: [parameters]
                properties:
                  parameters:
                    type: array
                    contains:
                      type: object
                      properties:
                        name:
                          const: Idempotency-Key
                        in:
                          const: header
                      required: [name, in]

  stella-operationId-style:
    description: "operationId must be lowerCamelCase"
    given: "$.paths[*][*].operationId"
    severity: warn
    then:
      function: casing
      functionOptions:
        type: camel


  stella-jobs-idempotency-key:
    description: "Orchestrator job submissions must accept Idempotency-Key header"
    given: "$.paths['/jobs'].post.parameters"
    severity: warn
    then:
      function: schema
      functionOptions:
        schema:
          type: array
          contains:
            type: object
            properties:
              name:
                const: Idempotency-Key
              in:
                const: header
            required: [name, in]