package service

import (
	"testing"
	"time"

	"kefu-cloud/server/internal/model"
)

func TestVisitorIsOnlineByHeartbeatAndLeave(t *testing.T) {
	now := time.Now()
	recent := now.Add(-20 * time.Second)
	stale := now.Add(-VisitorOnlineTimeout - time.Second)
	left := now.Add(-10 * time.Second)

	if !VisitorIsOnline(&model.Session{Status: "active", LastSeenAt: &recent}, now) {
		t.Fatal("最近有心跳的进行中会话应在线")
	}
	if VisitorIsOnline(&model.Session{Status: "active", LastSeenAt: &stale}, now) {
		t.Fatal("超过 45 秒无心跳应离线")
	}
	if VisitorIsOnline(&model.Session{Status: "active", LastSeenAt: &recent, VisitorLeftAt: &left}, now) {
		t.Fatal("显式离开后应离线")
	}
	afterReturn := now.Add(-5 * time.Second)
	if !VisitorIsOnline(&model.Session{Status: "active", LastSeenAt: &afterReturn, VisitorLeftAt: &left}, now) {
		t.Fatal("离开后重新心跳应恢复在线")
	}
	if VisitorIsOnline(&model.Session{Status: "ended", LastSeenAt: &recent}, now) {
		t.Fatal("已结束会话不应在线")
	}
}