openapi: 3.0.3
info:
  title: 车次直接运营成本
  version: 1.0.0
  description: 运营登记与分摊，不生成客户账单、财务应付或付款事实。不同币种分别汇总；仅从不可变DEPART实物装载和BOUND外接实收形成权重。DRAFT/CANCELLED预订不参与，其他未完成关联的有效预订阻止自动分摊，不得归为自有货。
security:
  - bearerAuth: []
paths:
  /api/platform/v1/last-leg/fleet/trips/{tripNo}/costs:
    parameters:
      - $ref: '#/components/parameters/TripNo'
    get:
      description: platform:fleet:trip:list；分页记录和整趟汇总使用同一只读快照。没有登记成本时totals为空，不显示为已知零成本。
      parameters:
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/Size'
      responses:
        '200':
          description: 业务响应，成功code为200
          content:
            application/json:
              schema:
                allOf:
                  - $ref: '#/components/schemas/Envelope'
                  - type: object
                    properties:
                      data: { $ref: '#/components/schemas/Listing' }
    post:
      description: platform:fleet:trip:cost-create；按车次和操作人锁定创建幂等键，异载荷同键拒绝。金额末尾零与空白备注按同一内容核对；成本与当时汇总历史同事务保存。
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required: [idempotencyKey, details]
              properties:
                idempotencyKey: { type: string, minLength: 8, maxLength: 128 }
                details: { $ref: '#/components/schemas/Draft' }
      responses:
        '200': { $ref: '#/components/responses/Cost' }
  /api/platform/v1/last-leg/fleet/trips/{tripNo}/costs/{costNo}:
    parameters:
      - $ref: '#/components/parameters/TripNo'
      - $ref: '#/components/parameters/CostNo'
    put:
      description: platform:fleet:trip:cost-edit；核对成本版本与车次归属，更正保留旧记录及当时分摊快照。原因选填，缺省使用标准动作说明。内容未变化返回原版本，不追加历史；旧版本即使内容相同仍拒绝。
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required: [recordVersion, details]
              properties:
                recordVersion: { type: integer, format: int64, minimum: 0 }
                details: { $ref: '#/components/schemas/Draft' }
                reason: { type: string, maxLength: 1000 }
      responses:
        '200': { $ref: '#/components/responses/Cost' }
  /api/platform/v1/last-leg/fleet/trips/{tripNo}/costs/{costNo}/history:
    parameters:
      - $ref: '#/components/parameters/TripNo'
      - $ref: '#/components/parameters/CostNo'
    get:
      description: platform:fleet:trip:list；只返回指定车次成本的不可变更正历史，金额为当时原始币种。
      parameters:
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/Size'
      responses:
        '200':
          description: 历史分页，data包含records/page/size/total/pages
          content:
            application/json:
              schema:
                allOf:
                  - $ref: '#/components/schemas/Envelope'
                  - type: object
                    properties:
                      data:
                        allOf:
                          - $ref: '#/components/schemas/Page'
                          - type: object
                            properties:
                              records: { type: array, items: { $ref: '#/components/schemas/History' } }
components:
  securitySchemes:
    bearerAuth: { type: http, scheme: bearer, bearerFormat: JWT }
  parameters:
    TripNo: { name: tripNo, in: path, required: true, schema: { type: string } }
    CostNo: { name: costNo, in: path, required: true, schema: { type: string } }
    Page: { name: page, in: query, schema: { type: integer, minimum: 1, default: 1 } }
    Size: { name: size, in: query, schema: { type: integer, minimum: 1, maximum: 100, default: 10 } }
  responses:
    Cost:
      description: 业务响应；A0404归属不存在，A0409版本或幂等冲突，A0422输入校验，实际发生时间不可为将来
      content:
        application/json:
          schema:
            allOf:
              - $ref: '#/components/schemas/Envelope'
              - type: object
                properties:
                  data: { $ref: '#/components/schemas/Cost' }
  schemas:
    Envelope:
      type: object
      properties:
        code: { type: string }
        message: { type: string }
        requestId: { type: string }
        traceId: { type: string }
    Page:
      type: object
      properties:
        page: { type: integer, format: int64 }
        size: { type: integer, format: int64 }
        total: { type: integer, format: int64 }
        pages: { type: integer, format: int64 }
    Draft:
      type: object
      required: [category, currency, amount, incurredAt]
      properties:
        category: { type: string, enum: [FUEL, DRIVER, TOLL, PARKING, OTHER] }
        currency: { type: string, enum: [CNY, USD] }
        amount: { type: number, minimum: 0, maximum: 999999999999.99, multipleOf: 0.01 }
        incurredAt: { type: string, format: date-time, description: 实际发生时间，统一按毫秒精度保存和核对 }
        remark: { type: string, nullable: true, maxLength: 1000 }
    Cost:
      type: object
      properties:
        costNo: { type: string }
        tripNo: { type: string }
        details: { $ref: '#/components/schemas/Draft' }
        recordVersion: { type: integer, format: int64 }
        updatedAt: { type: string, format: date-time }
    Allocation:
      type: object
      properties:
        businessNo: { type: string, description: 自有货排车单号或外接预订业务号 }
        sourceType: { type: string, enum: [OWN, EXTERNAL] }
        dispatchNo: { type: string }
        palletSpaces: { type: integer, format: int64 }
        amount: { type: number }
    Total:
      type: object
      properties:
        currency: { type: string }
        directCost: { type: number }
        allocations: { type: array, items: { $ref: '#/components/schemas/Allocation' } }
        ownCost: { type: number, nullable: true }
        externalCost: { type: number, nullable: true }
    Summary:
      type: object
      properties:
        departureVersion: { type: integer, format: int64, nullable: true }
        manifestHash: { type: string, nullable: true }
        allocationMethod: { type: string, nullable: true, enum: [SAME_ROUTE_PALLET_SPACES] }
        allocationBlockReason: { type: string, nullable: true }
        totals: { type: array, items: { $ref: '#/components/schemas/Total' } }
    Listing:
      type: object
      properties:
        page:
          allOf:
            - $ref: '#/components/schemas/Page'
            - type: object
              properties:
                records: { type: array, items: { $ref: '#/components/schemas/Cost' } }
        summary: { $ref: '#/components/schemas/Summary' }
    Snapshot:
      type: object
      properties:
        cost: { $ref: '#/components/schemas/Cost' }
        summary: { $ref: '#/components/schemas/Summary' }
    History:
      type: object
      properties:
        recordVersion: { type: integer, format: int64 }
        action: { type: string, enum: [CREATE, UPDATE] }
        reason: { type: string }
        occurredAt: { type: string, format: date-time }
        snapshot: { $ref: '#/components/schemas/Snapshot' }