// Copyright (c) 2016 Florian Fischer. All rights reserved.
// Use of this source code is governed by a MIT license found in the LICENSE file.

package uis

import (
	"bufio"
	"fmt"
	"os"

	. "muhq.space/go/muhq/goffel/logic"
)

type intPlayer struct {
	name  string
	score Score
}

type Interactive struct {
	players []intPlayer
}

var dices Dices
var reader = bufio.NewReader(os.Stdin)

func (i *Interactive) Init() error {
	name := ""
	count := 0
	fmt.Println("Please enter your player names. An empty line ends the player registration.")
	for {
		fmt.Printf("%d: ", count+1)
		_, err := fmt.Scanln(&name)
		if err != nil {
			break
		}
		i.players = append(i.players, intPlayer{name, NewScore()})
		count++

	}
	return nil
}
func (ui *Interactive) Round(r int) error {
	fmt.Printf("Round %d\n", r)
	for i := range ui.players {
		turn(&ui.players[i])
	}
	return nil
}

func (ui *Interactive) BroadcastWinner() {
	w := []intPlayer{}
	s := 0

	for _, p := range ui.players {
		t := p.score.Score()
		if t > s || len(w) == 0 {
			s = t
			w = []intPlayer{p}
		} else if t == s {
			w = append(w, p)
		}
	}

	if len(w) == 1 {
		fmt.Println("The Winner is:")
	} else {
		fmt.Println("The Winners are:")
	}
	for _, p := range w {
		fmt.Println(p.name, "with", p.score.Score(), "points")
	}
}

func turn(p *intPlayer) {
	dices.Roll(nil)

	fmt.Printf("%s's turn:\n", p.name)
	fmt.Println(dices)

	var cmd Cmd
	rerolls := 0

	for {
		fmt.Print("Please enter a command(h for help): ")
		input, err := reader.ReadString('\n')
		if err != nil {
			panic(err)
		}
		cmd, err = ParseCmd(input[0 : len(input)-1])
		if err != nil {
			fmt.Printf("%v. Try \"h\".\n", err)
			continue
		}
		switch cmd.Cmd {
		case "h":
			print(CmdHelp(cmd.Argv[0]))
		case "p":
			fmt.Println(p.score)
		case "d":
			fmt.Println(dices)
		case "q":
			os.Exit(0)
		case "i":
			points, err := p.score.Insert(dices, cmd.Argv[0])
			if err != nil {
				fmt.Println("Insert failed:", err)
				continue
			}
			fmt.Printf("You inserted %d into %v.\n", points, ScoreNames[cmd.Argv[0]])
			return
		case "c":
			err = p.score.Cancel(cmd.Argv[0])
			if err != nil {
				fmt.Println(err)
				continue
			}
			fmt.Println("You cancelled", ScoreNames[cmd.Argv[0]])
			return
		case "r":
			if rerolls < 2 {
				err := dices.Roll(cmd.Argv)
				if err != nil {
					fmt.Println("Reroll failed:", err)
					continue
				}
				rerolls++
				fmt.Println(dices)
				continue
			}
			fmt.Println("You are not allowed to reroll more than twice.")
		default:
		}
	}
}