// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Author: wsfuyibing <[email protected]>
// Date: 2024-12-17

package process

import (
	"context"
	"fmt"
	"gitee.com/go-libs/runtime"
	"testing"
	"time"
)

type tp struct {
}

func (o *tp) Run(ctx context.Context) (err error) {
	for {
		select {
		case <-ctx.Done():
			return
		}
	}
}

type t0 struct {
	name string
}

func (o *t0) After(_ context.Context) (err error) {
	println(o.name, ".After")
	return
}

func (o *t0) Before(_ context.Context) (err error) {
	println(o.name, ".Before")
	return
}

func (o *t0) Run(ctx context.Context) (err error) {
	println(o.name, ".Run")
	for {
		select {
		case <-ctx.Done():
			return
		}
	}
}

func TestNew(t *testing.T) {
	ctx, cancel := context.WithCancel(context.Background())
	proc := New("tester", &t0{name: "tester"})

	go func() {
		time.Sleep(time.Second)
		cancel()
		proc.Stop()
	}()

	t.Logf(`proc startup`)

	if err := proc.Start(ctx); err != nil {
		t.Logf(`start error: %v`, err)
		return
	}

	t.Logf(`proc shutdown`)
}

func TestNewWithChild(t *testing.T) {
	c := context.Background()
	d := make(chan bool)
	p := New("tester", &tp{})

	go func() {
		t.Logf(`startup`)
		_ = p.Start(c)
		t.Logf(`shutdown`)
	}()

	go func() {
		time.Sleep(time.Second * 3)
		d <- true
	}()

	var last Process

	time.Sleep(time.Millisecond * 3)

	for i := 0; i < 1000; i++ {
		if last != nil {
			last.Stop()
		}

		name := fmt.Sprintf(`test-%d`, i)
		curr := New(name, &tp{})
		p.Add(curr)

		last = curr

		// p.Del(fmt.Sprintf(`test-%d`, i-1))
		// p.Add(New(fmt.Sprintf(`test-%d`, i), &tp{}))
	}

	for {
		select {
		case <-d:
			p.StopWait()
			x := runtime.GetCounter().ProcessCounter()
			t.Logf(`counter: created=%d, started=%d, stopped=%d`, x.GetCreatedCount(), x.GetStartedCount(), x.GetStoppedCount())
			return
		}
	}

}