農產品商品交易

osop_version: "1.0"
id: "agri-commodity-trading"
name:"農產品商品交易"
description:"農民上架農產品 → 認證 → 買方競標 → 合約媒合 → 物流 → 交貨。"

nodes:
  - id: "list_harvest"
    type: "human"
    subtype: "input"
    name: "農民上架農產品"
    description: "發布可供量、等級、地點及收穫日期。"

  - id: "quality_cert"
    type: "system"
    name: "品質認證"
    description: "第三方實驗室檢驗水分含量、蛋白質及黴菌毒素。"

  - id: "buyer_bidding"
    type: "human"
    subtype: "input"
    name: "買方競標"
    description: "已登錄的買方按每公噸報價進行競標。"
    timeout_sec: 259200

  - id: "contract_match"
    type: "system"
    name: "合約媒合"
    description: "平台媒合最佳報價並產生購買合約。"

  - id: "logistics_coord"
    type: "api"
    subtype: "rest"
    name: "物流協調"
    description: "安排從農場到買方倉庫或港口的卡車運輸。"

  - id: "delivery_payment"
    type: "system"
    name: "交貨與付款"
    description: "過磅確認後觸發將款項從第三方代管帳戶釋放給農民。"
    security:
      risk_level: "high"

edges:
  - from: "list_harvest"
    to: "quality_cert"
    mode: "sequential"
  - from: "quality_cert"
    to: "buyer_bidding"
    mode: "conditional"
    when: "certification.grade != 'rejected'"
  - from: "buyer_bidding"
    to: "contract_match"
    mode: "sequential"
  - from: "contract_match"
    to: "logistics_coord"
    mode: "sequential"
  - from: "logistics_coord"
    to: "delivery_payment"
    mode: "sequential"