package tome_lib

import (
	"fmt"
	"log"
)

type Board struct {
	Sentinal [4]*Card `json:"sentinal"`
	Scourge  [4]*Card `json:"scourge"`
}

func (b *Board) String() string {
	return fmt.Sprintf("-----------------\n|%v|%v|%v|%v|\n-----------------\n|%v|%v|%v|%v|\n-----------------\n", b.Sentinal[0], b.Sentinal[1], b.Sentinal[2], b.Sentinal[3], b.Scourge[0], b.Scourge[1], b.Scourge[2], b.Scourge[3])
}

func (b *Board) GetRow(id int) []*Card {
	if id == SentinalID {
		return b.Sentinal[:]
	} else if id == ScourgeID {
		return b.Scourge[:]
	} else {
		log.Println("asked for invalid row")
		return nil
	}
}

func (b *Board) GetCard(id int, pos int) *Card {
	if pos >= 0 && pos <= 3 {
		return b.GetRow(id)[pos]
	} else {
		return nil
	}
}

func (b *Board) Remove(c *Card) {
	for k, v := range b.Sentinal {
		if v.Id == c.Id {
			b.Sentinal[k] = NewEmpty(k)
		}
	}
	for k, v := range b.Scourge {
		if v.Id == c.Id {
			b.Scourge[k] = NewEmpty(k)
		}
	}
}

func (b *Board) Empty(id int) bool {
	res := true
	row := b.GetRow(id)
	for _, v := range row {
		if !v.Empty() {
			res = false
		}
	}

	return res
}

func (b *Board) CanMove(id, src, dest int) bool {
	brd := b.GetRow(id)
	if src < 0 || src > 3 || dest < 0 || dest > 3 {
		return false
	}
	if brd[src].Empty() {
		return false
	}
	if !brd[dest].Empty() {
		return false
	}
	if brd[src].Sick {
		return false
	}
	return true
}

func (b *Board) Move(id, src, dest int) bool {
	brd := b.GetRow(id)
	brd[dest] = brd[src]
	brd[dest].Position = dest
	brd[src] = NewEmpty(src)
	return true
}

func (b *Board) CanPlay(id int, c *Card, dest int) bool {
	brd := b.GetRow(id)
	if dest < 0 || dest > 3 {
		return false
	}
	if !brd[dest].Empty() && !c.Spell {
		return false
	}
	return true
}

func (b *Board) Play(id int, c *Card, dest int, should bool) bool {
	brd := b.GetRow(id)
	if should {
		c.Position = dest
		c.Owner = id
		brd[dest] = c
	} else {
		return false
	}
	return true
}

func (b *Board) CanAttack(id, atk, def int) bool {
	aBrd := b.GetRow(id)
	if atk < 0 || atk > 3 || def < 0 || def > 3 {
		return false
	}
	if aBrd[atk].Empty() || aBrd[atk].Sick || atk != def {
		return false
	}
	return true
}

func (b *Board) Attack(id, atk, def int) int {
	var aid, did int
	if id == SentinalID {
		aid = SentinalID
		did = ScourgeID
	} else {
		aid = ScourgeID
		did = SentinalID
	}
	attacker := b.GetRow(aid)[atk]
	defender := b.GetRow(did)[def]
	if defender.Empty() {
		//health damage
		return 1
	}
	//Do actual battle math
	atkpower := attacker.Power
	defpower := defender.Power
	log.Printf("Atk:%v v Def: %v", atkpower, defpower)
	if atkpower > defpower {
		return 2
	}
	if atkpower == defpower {
		return 4
	}
	if atkpower < defpower {
		return 3
	}
	return -1

}

func (b *Board) ResetCards() {
	for _, v := range b.Sentinal {
		v.Power = v.BasePower
	}
	for _, v := range b.Scourge {
		v.Power = v.BasePower
	}
}