// +build ignore

package main

import (
	"context"
	"fmt"
	"log"
	"time"

	"github.com/reactivex/rxgo/v2"
)

func hello() {
	observable := rxgo.Just("Hello, World!")()
	ch := observable.Observe()
	item := <-ch
	fmt.Println(item.V)
}

func hot() {
	ch := make(chan rxgo.Item)
	go func() {
		for i := 0; i < 3; i++ {
			ch <- rxgo.Of(i)
		}
		close(ch)
	}()
	observable := rxgo.FromChannel(ch)

	// First Observer
	for item := range observable.Observe() {
		fmt.Println(item.V)
	}

	// Second Observer
	for item := range observable.Observe() {
		fmt.Println(item.V)
	}
}

func cold() {
	observable := rxgo.Defer([]rxgo.Producer{func(_ context.Context, ch chan<- rxgo.Item) {
		for i := 0; i < 3; i++ {
			ch <- rxgo.Of(i)
		}
	}})

	// First Observer
	for item := range observable.Observe() {
		fmt.Println(item.V)
	}

	// Second Observer
	for item := range observable.Observe() {
		fmt.Println(item.V)
	}
}

func connectable() {
	ch := make(chan rxgo.Item)
	go func() {
		for i := 0; i < 100; i++ {
			ch <- rxgo.Of(i)
			time.Sleep(time.Second)
		}
		close(ch)
	}()
	observable := rxgo.FromChannel(ch, rxgo.WithPublishStrategy())

	// Create the first Observer
	observable.DoOnNext(func(i interface{}) {
		fmt.Printf("First observer: %d\n", i)
	})

	// Create the second Observer
	observable.DoOnNext(func(i interface{}) {
		fmt.Printf("Second observer: %d\n", i)
	})

	disposed, cancel := observable.Connect(context.Background())

	go func() {
		time.Sleep(3 * time.Second)
		observable.DoOnNext(func(i interface{}) {
			fmt.Printf("Third observer: %d\n", i)
		})
	}()

	/*
		go func() {
			// Do something
			time.Sleep(time.Second)
			// Then cancel the subscription
			cancel()
		}()
	*/
	// Wait for the subscription to be disposed
	_ = disposed
	_ = cancel
}

func main() {
	log.Println("Hello")
	hello()

	log.Println("Hot")
	hot()

	log.Println("Cold")
	cold()

	log.Println("Connectable")
	connectable()

	select {}
}