Enable to play the game

Author: lfcd85

kadai3-1/lfcd85/typinggame/typinggame.go

@@ -1,7 +1,12 @@
 package typinggame
 
 import (
+	"bufio"
+	"context"
 	"fmt"
+	"io"
+	"math/rand"
+	"os"
 	"time"
 )
 
@@ -13,7 +18,49 @@ type Game struct {
 }
 
 func Execute(g Game) error {
-	fmt.Println(g.Words)
-	fmt.Println(g.TimeLimit)
+	g.run(os.Stdin, os.Stdout)
 	return nil
 }
+
+func (g *Game) run(r io.Reader, w io.Writer) {
+	ch := input(r)
+	bc := context.Background()
+	ctx, cancel := context.WithTimeout(bc, g.TimeLimit)
+	defer cancel()
+
+	fmt.Fprintln(w, "Let's type the standard package names! (Time limit:", g.TimeLimit, ")")
+
+	var score int
+	rand.Seed(time.Now().UnixNano())
+	word := g.Words[rand.Intn(len(g.Words))]
+LOOP:
+	for {
+		fmt.Fprintln(w, ">", word)
+		select {
+		case input := <-ch:
+			if input == word {
+				score++
+				fmt.Fprintln(w, "ok! current score:", score)
+				word = g.Words[rand.Intn(len(g.Words))]
+			} else {
+				fmt.Fprintln(w, "ng")
+			}
+		case <-ctx.Done():
+			fmt.Fprintln(w)
+			fmt.Fprintln(w, g.TimeLimit, "has passed: you correctly typed", score, "packages!")
+			break LOOP
+		}
+	}
+}
+
+func input(r io.Reader) <-chan string {
+	ch := make(chan string)
+
+	go func() {
+		s := bufio.NewScanner(r)
+		for s.Scan() {
+			ch <- s.Text()
+		}
+	}()
+	return ch
+}

kadai3-1/lfcd85/typinggame/typinggame_test.go

@@ -10,7 +10,7 @@ import (
 func TestExecute(t *testing.T) {
 	g := typinggame.Game{
 		typinggame.Words{"hoge", "fuga", "piyo"},
-		30 * time.Second,
+		1 * time.Second,
 	}
 
 	if err := typinggame.Execute(g); err != nil {