package system

import (
	"fmt"
	"testing"
	"time"

	"github.com/spf13/viper"
)

func TestCoreInject(t *testing.T) {
	sys := New()
	viper.Set("log.level", 15)
	b1 := EasyBaseService{"b1", []string{}, true}
	b2 := EasyBaseService{"b2", []string{"b1"}, true}
	b3 := EasyBaseService{"b3", []string{"b1"}, true}
	b4 := EasyBaseService{"b4", []string{"b3", "b1"}, true}
	sys.Append(b1, b2, b3, b4)
	sys.Inject(&Inject{
		Dependencies: []string{"b2"},
		MainFunc:     func() error { l.Info().Msg("testing, injection"); return nil },
	})
	go sys.Start()
	time.Sleep(time.Second * 1)
	sys.Stop()
	<-sys.Done()
}

func TestTopo(t *testing.T) {
	nodes := []*node{}
	nodes = append(nodes,
		&node{
			name: "n1",
			edge: []string{"n2"},
		},
		&node{
			name: "n2",
		},
		&node{
			name: "n3",
			edge: []string{"n1", "n2"},
		},
		&node{
			name: "n4",
			edge: []string{"n3"},
		},
		&node{
			name: "n5",
		},
		&node{
			name: "n6",
			edge: []string{"n4", "n5"},
		},
	)

	result := topo(nodes)
	for i := range result {
		fmt.Print(result[i].name, ", ")
	}
	fmt.Print("\n")

}

func TestTopoError(t *testing.T) {
	nodes := []*node{}
	nodes = append(nodes,
		&node{
			name: "n1",
			edge: []string{"n2"},
		},
		&node{
			name: "n2",
			edge: []string{"n3"},
		},
	)

	defer func() {
		if r := recover(); r == nil {
			t.Errorf("The code did not panic")
		}
	}()

	result := topo(nodes)
	for i := range result {
		fmt.Print(result[i].name, ", ")
	}
	fmt.Print("\n")

}