package main

type Board struct {
	Sentinal [4]Card
	SenBuf   [4]bool
	Scourge  [4]Card
	ScoBuf   [4]bool
}

func NewBoard() *Board {
	return &Board{
		Sentinal: [4]Card{-1, -1, -1, -1},
		SenBuf:   [4]bool{true, true, true, true},
		Scourge:  [4]Card{-1, -1, -1, -1},
		ScoBuf:   [4]bool{true, true, true, true},
	}
}

func (b *Board) GetRow(id int) []Card {
	if id == 1 {
		return b.Sentinal[:]
	} else {
		return b.Scourge[:]
	}
}

func (b *Board) Move(id, src, dest int) bool {
	var brd [4]Card
	if id == 1 {
		brd = b.Sentinal
	} else {
		brd = b.Scourge
	}
	if brd[src] == -1 {
		return false
	}
	if brd[dest] != -1 {
		return false
	}
	brd[dest] = brd[src]
	brd[src] = -1
	if id == 1 {
		b.Sentinal = brd
		b.SenBuf[dest] = false
	} else {
		b.Scourge = brd
		b.ScoBuf[dest] = false
	}
	return true
}

func (b *Board) Play(id int, c Card, dest int) bool {
	var brd [4]Card
	if id == 1 {
		brd = b.Sentinal
	} else {
		brd = b.Scourge
	}
	if brd[dest] != -1 {
		return false
	}
	brd[dest] = c
	if id == 1 {
		b.Sentinal = brd
		b.SenBuf[dest] = false
	} else {
		b.Scourge = brd
		b.ScoBuf[dest] = false
	}
	return true
}

func (b *Board) Attack(id int, atk, def int) int {
	var aBrd [4]Card
	var dBrd [4]Card
	var aBuf [4]bool
	var dBuf [4]bool
	if id == 1 {
		aBrd = b.Sentinal
		aBuf = b.SenBuf
		dBrd = b.Scourge
		dBuf = b.ScoBuf
	} else {
		aBrd = b.Scourge
		aBuf = b.ScoBuf
		dBrd = b.Sentinal
		dBuf = b.SenBuf
	}
	if aBrd[atk] == -1 || !aBuf[atk] || !aBrd[atk].CanAttack(atk, def) {
		return -1
	}
	aBuf[atk] = false
	if dBrd[def] == -1 {
		//health damage
		if id == 1 {
			b.Sentinal = aBrd
			b.SenBuf = aBuf
			b.Scourge = dBrd
			b.ScoBuf = dBuf
		} else {
			b.Scourge = aBrd
			b.ScoBuf = aBuf
			b.Sentinal = dBrd
			b.SenBuf = dBuf
		}
		return 1
	}
	//Do actual battle math
	attacker := aBrd[atk]
	defender := dBrd[def]
	//check atk buffs
	for i, v := range aBrd {
		if v == Two {
			attacker = attacker + 1
		}
		if v == Three && (i == atk-1 || i == atk+1) {
			attacker = attacker + 1
		}
	}
	for i, v := range dBrd {
		if v == Two {
			defender = defender + 1
		}
		if v == Three && (i == def-1 || i == def+1) {
			defender = defender + 1
		}
	}
	if attacker > defender {
		dBrd[def] = -1
		if id == 1 {
			b.Sentinal = aBrd
			b.SenBuf = aBuf
			b.Scourge = dBrd
			b.ScoBuf = dBuf
		} else {
			b.Scourge = aBrd
			b.ScoBuf = aBuf
			b.Sentinal = dBrd
			b.SenBuf = dBuf
		}
		return 0
	}
	if attacker == defender {
		aBrd[atk] = -1
		dBrd[def] = -1
		if id == 1 {
			b.Sentinal = aBrd
			b.SenBuf = aBuf
			b.Scourge = dBrd
			b.ScoBuf = dBuf
		} else {
			b.Scourge = aBrd
			b.ScoBuf = aBuf
			b.Sentinal = dBrd
			b.SenBuf = dBuf
		}
		return 0
	}
	return -1

}