From ff63b62a7c66b85b35b1fa1921769350aa767b2d Mon Sep 17 00:00:00 2001
From: Shuichi Ohsawa <ohsawa0515@gmail.com>
Date: Mon, 14 May 2018 16:37:34 +0900
Subject: [PATCH 1/2] add files

---
 kadai3/main.go          | 22 ++++++++++++
 kadai3/typing/qa.go     | 41 ++++++++++++++++++++++
 kadai3/typing/typing.go | 78 +++++++++++++++++++++++++++++++++++++++++
 3 files changed, 141 insertions(+)
 create mode 100644 kadai3/main.go
 create mode 100644 kadai3/typing/qa.go
 create mode 100644 kadai3/typing/typing.go

diff --git a/kadai3/main.go b/kadai3/main.go
new file mode 100644
index 0000000..eaf000a
--- /dev/null
+++ b/kadai3/main.go
@@ -0,0 +1,22 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"os"
+	"time"
+
+	"github.com/ohsawa0515/gotyping/typing"
+)
+
+var timeout int
+
+func main() {
+	flag.IntVar(&timeout, "t", 30, "Timeout(sec)")
+	flag.Parse()
+
+	ctx, cancel := context.WithTimeout(context.Background(), time.Duration(timeout)*time.Second)
+	defer cancel()
+
+	typing.Run(ctx, os.Stdin)
+}
diff --git a/kadai3/typing/qa.go b/kadai3/typing/qa.go
new file mode 100644
index 0000000..e8104eb
--- /dev/null
+++ b/kadai3/typing/qa.go
@@ -0,0 +1,41 @@
+package typing
+
+type QA struct {
+	Good      int
+	Bad       int
+	Counter   int
+	Questions []string
+}
+
+// NewQA -
+func NewQA(questions []string) *QA {
+	return &QA{
+		Good:      0,
+		Bad:       0,
+		Counter:   -1,
+		Questions: questions,
+	}
+}
+
+// MakeQuestion makes question from given English word list.
+func (qa *QA) MakeQuestion() string {
+	// 出題範囲数を超えたら初めに戻る
+	if len(qa.Questions) <= qa.Counter+1 {
+		qa.Counter = 0
+	} else {
+		qa.Counter++
+	}
+
+	return qa.Questions[qa.Counter]
+}
+
+// CheckAnswer returns whether or not it matches the answer of the input.
+func (qa *QA) CheckAnswer(question, answer string) bool {
+	if question == answer {
+		qa.Good++
+		return true
+	} else {
+		qa.Bad++
+		return false
+	}
+}
diff --git a/kadai3/typing/typing.go b/kadai3/typing/typing.go
new file mode 100644
index 0000000..38e3a99
--- /dev/null
+++ b/kadai3/typing/typing.go
@@ -0,0 +1,78 @@
+package typing
+
+import (
+	"bufio"
+	"context"
+	"fmt"
+	"io"
+)
+
+var words = []string{
+	"advertisement",
+	"lid",
+	"southeast",
+	"perish",
+	"inhabit",
+	"extent",
+	"room",
+	"balance",
+	"onto",
+	"breeze",
+	"protein",
+	"genetic",
+	"setup",
+	"kindergarten",
+	"satisfactory",
+	"appetite",
+	"civilization",
+	"bookcase",
+	"galaxy",
+	"suburban",
+	"infectious",
+	"jerk",
+}
+
+const CORRECT_MESSAGE = "✓ That's right!"
+const INCORRECT_MESSAGE = "✗ Oh, bad"
+
+func read(r io.Reader) <-chan string {
+	ch := make(chan string)
+	go func() {
+		defer close(ch)
+		s := bufio.NewScanner(r)
+		for s.Scan() {
+			ch <- s.Text()
+		}
+	}()
+
+	return ch
+}
+
+// Run starts typing game.
+func Run(ctx context.Context, r io.Reader) {
+	qa := NewQA(words)
+	ch := read(r)
+LOOP:
+	for {
+		question := qa.MakeQuestion()
+		fmt.Printf("%s > ", question)
+
+		select {
+		case answer, ok := <-ch:
+			if !ok {
+				break LOOP
+			}
+			if qa.CheckAnswer(question, answer) {
+				fmt.Println(CORRECT_MESSAGE)
+			} else {
+				fmt.Println(INCORRECT_MESSAGE)
+			}
+		case <-ctx.Done():
+			fmt.Println("Timeout")
+			break LOOP
+		}
+	}
+
+	fmt.Printf("Good: %d\n", qa.Good)
+	fmt.Printf("Bad: %d\n", qa.Bad)
+}

From c202a0d9b4a8dea8b4a11d840741005f2fa5ebc9 Mon Sep 17 00:00:00 2001
From: Shuichi Ohsawa <ohsawa0515@gmail.com>
Date: Mon, 14 May 2018 16:38:05 +0900
Subject: [PATCH 2/2] add test

---
 kadai3/typing/qa_test.go | 45 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 kadai3/typing/qa_test.go

diff --git a/kadai3/typing/qa_test.go b/kadai3/typing/qa_test.go
new file mode 100644
index 0000000..c01dce5
--- /dev/null
+++ b/kadai3/typing/qa_test.go
@@ -0,0 +1,45 @@
+package typing
+
+import (
+	"fmt"
+)
+
+var testWords = []string{
+	"abcdefg",
+	"hijk",
+	"lmnopqastu",
+}
+
+var testAnswers = []string{
+	"abcdefg",
+	"hijl", // typo
+	"lmnopqastu",
+}
+
+func ExampleQA_MakeQuestion() {
+	qa := NewQA(testWords)
+
+	for i := 0; i < len(testWords)+2; i++ {
+		fmt.Println(qa.MakeQuestion())
+	}
+
+	// Output:
+	// abcdefg
+	// hijk
+	// lmnopqastu
+	// abcdefg
+	// hijk
+}
+
+func ExampleQA_CheckAnswer() {
+	qa := NewQA(testWords)
+	for _, a := range testAnswers {
+		q := qa.MakeQuestion()
+		fmt.Println(qa.CheckAnswer(q, a))
+	}
+
+	// Output:
+	// true
+	// false
+	// true
+}