package data

import "time"

type Article struct {
	Title   string
	Created time.Time
	Desc    string
	Content string
}

type ArticleList struct {
	addChan     chan Article
	releaseChan chan int
	returnChan  chan Article
	List        []Article
}

func (l *ArticleList) start() {
	for {
		select {
		case article := <-l.addChan:
			l.List = append(l.List, article)
		case i := <-l.releaseChan:
			l.returnChan <- l.List[i]
			l.List = append(l.List[:i], l.List[i+1:]...)
		}
	}
}

func NewArticleList() *ArticleList {
	list := &ArticleList{
		List:        []Article{},
		addChan:     make(chan Article),
		releaseChan: make(chan int),
		returnChan:  make(chan Article),
	}
	list.start()
	return list
}

func (l *ArticleList) Close() {
	close(l.addChan)
	close(l.releaseChan)
	close(l.returnChan)
}

func (l *ArticleList) Add(a Article) {
	l.addChan <- a
}

func (l *ArticleList) Release(i int) (Article, bool) {
	if i < 0 || i > len(l.List) {
		return Article{}, false
	}
	l.releaseChan <- i
	return <-l.returnChan, true
}