//go:build example
// +build example

package main

import (
	"fmt"
	"log"
	"os"
	"time"

	"git.toowon.com/jimmy/go-common/excel"
	"git.toowon.com/jimmy/go-common/factory"
	"git.toowon.com/jimmy/go-common/tools"
)

type User struct {
	ID        int       `json:"id"`
	Name      string    `json:"name"`
	Email     string    `json:"email"`
	CreatedAt time.Time `json:"created_at"`
	Status    int       `json:"status"`
}

func main() {
	app := factory.New(nil)
	ex := app.Excel()

	users := []User{
		{ID: 1, Name: "Alice", Email: "alice@example.com", CreatedAt: time.Now(), Status: 1},
		{ID: 2, Name: "Bob", Email: "bob@example.com", CreatedAt: time.Now(), Status: 0},
	}

	columns := []excel.ExportColumn{
		{Header: "ID", Field: "ID", Width: 10},
		{Header: "姓名", Field: "Name", Width: 20},
		{Header: "邮箱", Field: "Email", Width: 30},
		{
			Header: "创建时间",
			Field:  "CreatedAt",
			Format: excel.AdaptTimeFormatter(tools.FormatDateTime),
		},
		{
			Header: "状态",
			Field:  "Status",
			Format: func(value interface{}) string {
				if status, ok := value.(int); ok && status == 1 {
					return "启用"
				}
				return "禁用"
			},
		},
	}

	if err := ex.ExportToFile("users.xlsx", "用户列表", columns, users); err != nil {
		log.Fatal(err)
	}
	fmt.Println("exported users.xlsx")

	f, err := os.Create("users_http.xlsx")
	if err != nil {
		log.Fatal(err)
	}
	defer f.Close()
	if err := ex.ExportToWriter(f, "用户列表", columns, users); err != nil {
		log.Fatal(err)
	}
	fmt.Println("exported users_http.xlsx")
}