package scheduler

import (
	"goRedisDLM/engine"
	"time"
)

type FirstScheduler struct {
	Request chan engine.Request
	Worker  chan chan engine.Request
}

func (f *FirstScheduler) Submit(request engine.Request) {
	f.Request <- request
}

func (f *FirstScheduler) ConfigChan() chan engine.Request {
	return make(chan engine.Request)
}

func (f *FirstScheduler) Run() {
	f.Request = make(chan engine.Request)
	f.Worker = make(chan chan engine.Request)

	go func() {
		var requests []engine.Request
		var workers []chan engine.Request

		for {
			var req engine.Request
			var work chan engine.Request

			if len(requests) > 0 && len(workers) > 0 {
				req = requests[0]
				work = workers[0]
			}

			select {
			case r := <-f.Request:
				requests = append(requests, r)
			case w := <-f.Worker:
				workers = append(workers, w)
			case work <- req:
				requests = requests[1:]
				workers = workers[1:]

			case <-time.After(time.Millisecond * 100):

			}
		}
	}()
}

func (f *FirstScheduler) WorkReady(requests chan engine.Request) {
	f.Worker <- requests
}