规范气站与配送点提现渠道

backend/api/internal/logic/common/withdrawal_channel.go

@@ -0,0 +1,11 @@
+// Package common 提供跨管理端复用的提现渠道约束。
+// 版本：v1.0.0
+package common
+
+// OrganizationWithdrawalChannelBank 是当前组织钱包唯一开放的提现渠道。
+const OrganizationWithdrawalChannelBank = "bank"
+
+// IsSupportedOrganizationWithdrawalChannel 判断气站或配送点提交的渠道是否已开放。
+func IsSupportedOrganizationWithdrawalChannel(channel string) bool {
+	return channel == OrganizationWithdrawalChannelBank
+}

backend/api/internal/logic/common/withdrawal_channel_test.go

@@ -0,0 +1,15 @@
+package common
+
+import "testing"
+
+// TestIsSupportedOrganizationWithdrawalChannel 验证组织端只开放银行卡提现。
+func TestIsSupportedOrganizationWithdrawalChannel(t *testing.T) {
+	if !IsSupportedOrganizationWithdrawalChannel("bank") {
+		t.Fatal("银行卡提现渠道应当可用")
+	}
+	for _, channel := range []string{"alipay", "wechat", "", " bank "} {
+		if IsSupportedOrganizationWithdrawalChannel(channel) {
+			t.Fatalf("未开放的提现渠道不应通过校验：%q", channel)
+		}
+	}
+}