openapi: 3.0.3
info:
  title: 海外客户下单预估资金校验
  version: 1.0.0
  description: 客户订单先原子落库并进入资金处理中，资金冻结通过Outbox异步执行。冻结成功后进入待审核，失败进入资金失败并可在原订单上重试；平台仅可审核待审核订单。余额优先、授信补足及不足判断由Finance原子执行；本服务不自行修改钱包。预算预占、订单和冻结指令在同一事务内写入，审核通过立即申请释放原预算，取消、驳回或终态同样释放；释放失败自动重试。散板冻结成功进入PENDING_ACCEPTANCE，失败进入FUNDING_FAILED。
security:
  - bearerAuth: []
paths:
  /api/merchant/v1/last-leg/order-budgets/{kind}/{key}:
    parameters:
      - {name: kind, in: path, required: true, schema: {type: string, enum: [procurement, trucking, looseboard]}}
      - {name: key, in: path, required: true, schema: {type: string, minLength: 1, maxLength: 128}}
    post:
      summary: 兼容接口：发起或读取预算冻结请求
      description: 客户身份仅来自认证。procurement需要merchant:cross-border:procurement:create，trucking需要merchant:cross-border:domestic-trucking:create，looseboard需要merchant:cross-border:pallet-shipping:create；权限不能交叉使用。采购金额是预算单价乘采购数量，免费样品零金额不发资金指令；卡车金额必须大于0。重试禁止更改金额或币种。
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required: [amount, currency]
              properties:
                amount: {type: number, minimum: 0, multipleOf: 0.01}
                currency: {type: string, enum: [CNY, USD]}
      responses:
        '200': {$ref: '#/components/responses/Result'}
        '403': {description: 身份或业务创建权限不足}
    get:
      summary: 读取当前客户本次下单的权威资金回执
      description: 与POST相同创建权限；该接口保留用于旧客户端兼容。新客户端应直接创建订单，并通过订单资金状态接口读取异步结果。
      responses:
        '200': {$ref: '#/components/responses/Result'}
        '403': {description: 身份或业务创建权限不足}
  /api/merchant/v1/last-leg/order-budgets/{kind}/orders/{orderNo}:
    parameters:
      - {name: kind, in: path, required: true, schema: {type: string, enum: [procurement, trucking, looseboard]}}
      - {name: orderNo, in: path, required: true, schema: {type: string, minLength: 1, maxLength: 128}}
    get:
      summary: 读取订单资金状态
      description: 仅当前客户可读。FUNDING_PENDING期间客户端可短暂轮询；FUNDING_FAILED展示失败原因并允许重试。采购和卡车只有PENDING_REVIEW、散板只有PENDING_ACCEPTANCE且资金已冻结才允许平台审核。读取订单资金状态分别要求对应业务list权限，重试要求对应create权限。
      responses:
        '200': {$ref: '#/components/responses/Result'}
  /api/merchant/v1/last-leg/order-budgets/{kind}/orders/{orderNo}/retry:
    parameters:
      - {name: kind, in: path, required: true, schema: {type: string, enum: [procurement, trucking, looseboard]}}
      - {name: orderNo, in: path, required: true, schema: {type: string, minLength: 1, maxLength: 128}}
    post:
      summary: 重试订单资金冻结
      description: 仅当前客户可重试FUNDING_FAILED订单，沿用原金额和币种；重复请求幂等。
      responses:
        '200': {$ref: '#/components/responses/Result'}

components:
  securitySchemes:
    bearerAuth: {type: http, scheme: bearer, bearerFormat: JWT}
  responses:
    Result:
      description: 统一业务响应；code为字符串200表示查询或发起成功，不等于资金冻结成功。
      content:
        application/json:
          schema:
            type: object
            properties:
              code: {type: string}
              message: {type: string}
              data:
                type: object
                required: [status, amountCny, message, usable]
                properties:
                  status: {type: string, enum: [FREEZE_PENDING, FROZEN, FAILED, RELEASE_PENDING, RELEASE_FAILED, RELEASED]}
                  amountCny: {type: number, minimum: 0}
                  message: {type: string}
                  orderNo: {type: string, nullable: true}
                  usable: {type: boolean}