-
Notifications
You must be signed in to change notification settings - Fork 0
/
CLI.go
72 lines (57 loc) · 1.57 KB
/
CLI.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
package poker
import (
"bufio"
"errors"
"fmt"
"io"
"strconv"
"strings"
)
// 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: "
// BadPlayerInputErrMsg is the text telling the user they did bad things
const BadPlayerInputErrMsg = "Bad value received for number of players, please try again with a number"
// BadWinnerInputMsg is the text telling the user they declared the winner wrong
const BadWinnerInputMsg = "invalid winner input, expect format of 'PlayerName wins'"
// PlayPoker starts the game
func (cli *CLI) PlayPoker() {
fmt.Fprint(cli.out, PlayerPrompt)
numberOfPlayers, err := strconv.Atoi(cli.readLine())
if err != nil {
fmt.Fprint(cli.out, BadPlayerInputErrMsg)
return
}
cli.game.Start(numberOfPlayers)
winnerInput := cli.readLine()
winner, err := extractWinner(winnerInput)
if err != nil {
fmt.Fprint(cli.out, BadWinnerInputMsg)
return
}
cli.game.Finish(winner)
}
func extractWinner(userInput string) (string, error) {
if !strings.Contains(userInput, " wins") {
return "", errors.New(BadWinnerInputMsg)
}
return strings.Replace(userInput, " wins", "", 1), nil
}
func (cli *CLI) readLine() string {
cli.in.Scan()
return cli.in.Text()
}