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CLI.go
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CLI.go
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package poker
import (
"bufio"
"fmt"
"io"
"strconv"
"strings"
)
// Game manages the state of a game.
type Game interface {
Start(numberOfPlayers int)
Finish(winner string)
}
// CLI helps players through a game of poker.
type CLI struct {
playerStore PlayerStore
in *bufio.Scanner
out io.Writer
game Game
}
// NewCLI creates a CLI for playing poker.
func NewCLI(in io.Reader, out io.Writer, game Game) *CLI {
return &CLI{
in: bufio.NewScanner(in),
out: out,
game: game,
}
}
// PlayerPrompt is the text asking the user for the number of players.
const PlayerPrompt = "Please enter the number of players: "
// ErrorPlayerNumberPrompt tells the user they entered in the value wrong.
const ErrorPlayerNumberPrompt = "ERROR: Please enter the number of players as a number: "
// PlayPoker starts the game.
func (cli *CLI) PlayPoker() {
fmt.Fprint(cli.out, PlayerPrompt)
numberOfPlayers, _ := strconv.Atoi(cli.readLine())
cli.game.Start(numberOfPlayers)
winnerInput := cli.readLine()
winner := extractWinner(winnerInput)
cli.game.Finish(winner)
}
func extractWinner(userInput string) string {
return strings.Replace(userInput, " wins", "", 1)
}
func (cli *CLI) readLine() string {
cli.in.Scan()
return cli.in.Text()
}