package main

import (
	"encoding/json"
	fmt "fmt"
)

// BaseModel 公共基础模型
type BaseModel struct {
	ID        int64  `json:"id,string,omitempty"`
	CreatedAt string `json:"created_at,omitempty"`
}

// Order 订单模型（全标签演示）
type Order struct {
	BaseModel `json:",inline"`
	OrderNo   string `json:"order_no"`
	Status    int    `json:"status,omitempty"`
	Phone     int64  `json:"phone,string,omitempty"`
	Password  string `json:"-"`
	Extra     struct {
		Level int `json:"level"`
	} `json:",nosquash"`
	Ignore string `json:",allowunknown"`
}

func main() {
	order := Order{
		BaseModel: BaseModel{ID: 202606001, CreatedAt: "2026-06-02"},
		OrderNo:   "BULMA-ORDER-001",
		Password:  "secret_123",
	}
	data, _ := json.MarshalIndent(order, "", "  ")
	fmt.Println("\n=== 高级标签运行结果 ===")
	fmt.Println(string(data))

	// 演示 allowunknown 的反序列化功能
	fmt.Println("\n=== 反序列化测试（含未知字段）===")
	jsonWithUnknown := `{
		"id": "202606002",
		"created_at": "2026-06-02",
		"order_no": "BULMA-ORDER-002",
		"unknown_field": "test",
		"extra_field": 123
	}`
	var newOrder Order
	err := json.Unmarshal([]byte(jsonWithUnknown), &newOrder)
	if err != nil {
		fmt.Printf("反序列化失败：%v\n", err)
	} else {
		fmt.Printf("成功解析：%+v\n", newOrder)
	}

	// 演示 omitempty 的效果
	fmt.Println("\n=== omitempty 效果对比 ===")
	emptyOrder := Order{
		BaseModel: BaseModel{ID: 0}, // ID 为 0，会被 omit
		OrderNo:   "BULMA-ORDER-003",
	}
	data2, _ := json.MarshalIndent(emptyOrder, "", "  ")
	fmt.Println(string(data2))
}