#/!bin/bash
  
#出力先を指定
txt=quiz3.txt

#重複しないよう1桁目から順に正解となる4桁の数を決定
   A1=`expr $RANDOM % 9 + 1`; A2=$A1
until [ $A2 != $A1 ]; do
   A2=`expr $RANDOM % 9 + 1`; done; A3=$A2
until [ $A3 != $A1 -a $A3 != $A2 ]; do
   A3=`expr $RANDOM % 9 + 1`; done; A4=$A3
until [ $A4 != $A1 -a $A4 != $A2 -a $A4 != $A3 ]; do
   A4=`expr $RANDOM % 9 + 1`; done
ANSWER=""$A1""$A2""$A3""$A4""

#最初の回答を促す
echo 'Type your first answer!'
while :; do
read answer
   
   #入力した4桁の数字を1桁ずつ読み込み、重複がある場合は打ち直し
   a1=`echo "$answer" | cut -c1`
   a2=`echo "$answer" | cut -c2`
   a3=`echo "$answer" | cut -c3`
   a4=`echo "$answer" | cut -c4`
   if [ $a1 = $a2 -o $a1 = $a3 -o $a1 = $a4 -o $a2 = $a3 -o $a2 = $a4 -o $a3 = $a4 ]
       then echo 'Your Answer has some OVERLAPPED DIGITS. Try Again.'; continue
       else break; fi; done

#最初の回答を出力
echo $answer >> $txt

#正解するまでループを繰り返す
n=1
until [ $answer = $ANSWER ]; do
   
   #Hitの数を計算する
   if [ $a1 = $A1 ]; then h1=1; else h1=0; fi
   if [ $a2 = $A2 ]; then h2=1; else h2=0; fi
   if [ $a3 = $A3 ]; then h3=1; else h3=0; fi
   if [ $a4 = $A4 ]; then h4=1; else h4=0; fi
   hit=`expr $h1 + $h2 + $h3 + $h4`

   #Blowの数を計算する
   if [ $a1 = $A2 -o $a1 = $A3 -o $a1 = $A4 ]; then b1=1; else b1=0; fi
   if [ $a2 = $A1 -o $a2 = $A3 -o $a2 = $A4 ]; then b2=1; else b2=0; fi
   if [ $a3 = $A1 -o $a3 = $A2 -o $a3 = $A4 ]; then b3=1; else b3=0; fi
   if [ $a4 = $A1 -o $a4 = $A2 -o $a4 = $A3 ]; then b4=1; else b4=0; fi
   blow=`expr $b1 + $b2 + $b3 + $b4`

   #HitとBlowの数を表示し、次の回答を入出力、重複がある場合は打ち直し
   echo "$hit Hit $blow Blow" | tee -a $txt 
   while :; do
   read answer
      a1=`echo "$answer" | cut -c1`
      a2=`echo "$answer" | cut -c2`
      a3=`echo "$answer" | cut -c3`
      a4=`echo "$answer" | cut -c4`
      if [ $a1 = $a2 -o $a1 = $a3 -o $a1 = $a4 -o $a2 = $a3 -o $a2 = $a4 -o $a3 = $a4 ]
          then echo 'Your Answer has some OVERLAPPED DIGITS. Try Again.'; continue
          else break; fi; done
   echo $answer >> $txt
   
   #回答回数をカウントし次のループへ移行
   n=`expr $n + 1`
done

#正解するとメッセージと合計回答数を表示して終了
echo 'Your number matches the answer!!' | tee -a $txt 
echo "You answered $n times to get the answer." | tee -a $txt