const REQUEST_ID_SCHEMA = {
  type: "string",
  description: "服务端生成的请求追踪ID",
};

const ERROR_DETAILS_SCHEMA = {
  type: "object",
  additionalProperties: true,
};

const ERROR_BODY_SCHEMA = {
  type: "object",
  required: ["code", "message", "details"],
  properties: {
    code: { type: "string" },
    message: { type: "string" },
    details: ERROR_DETAILS_SCHEMA,
  },
};

function buildDataEnvelopeSchema(dataSchema, description = "OK") {
  return {
    description,
    type: "object",
    required: ["requestId", "data"],
    properties: {
      requestId: REQUEST_ID_SCHEMA,
      data: dataSchema,
    },
  };
}

function buildErrorEnvelopeSchema({
  description = "业务错误",
  codeExample = "VALID_001",
  messageExample = "参数校验失败",
  detailsExample,
} = {}) {
  const schema = {
    description,
    type: "object",
    required: ["requestId", "error"],
    properties: {
      requestId: REQUEST_ID_SCHEMA,
      error: {
        ...ERROR_BODY_SCHEMA,
        properties: {
          ...ERROR_BODY_SCHEMA.properties,
          code: {
            ...ERROR_BODY_SCHEMA.properties.code,
            example: codeExample,
          },
          message: {
            ...ERROR_BODY_SCHEMA.properties.message,
            example: messageExample,
          },
          details: {
            ...ERROR_DETAILS_SCHEMA,
          },
        },
      },
    },
  };

  if (detailsExample !== undefined) {
    schema.properties.error.properties.details.example = detailsExample;
  }

  return schema;
}

const UUID_PARAM_SCHEMA = {
  type: "object",
  required: ["id"],
  properties: {
    id: {
      type: "string",
      format: "uuid",
    },
  },
};

module.exports = {
  REQUEST_ID_SCHEMA,
  ERROR_BODY_SCHEMA,
  buildDataEnvelopeSchema,
  buildErrorEnvelopeSchema,
  UUID_PARAM_SCHEMA,
};