package main

import "github.com/veandco/go-sdl2/sdl"

const (
	openingWidth = 7
)

type Base struct {
	rect  sdl.Rect
	owner *Player
}

func (base *Base) tick(players *[]*Player) {
	for _, player := range *players {
		if player.cullingRect.HasIntersection(&base.rect) {
			if player.rechargeCooldown == 0 && player.energy < MaxEnergy {
				player.energy++
				if player == base.owner {
					player.rechargeCooldown = RechargeCooldownOwn
				} else {
					player.rechargeCooldown = RechargeCooldownOpponent
				}
			}
			if player == base.owner && player.repairCooldown == 0 && player.health < MaxHealth {
				player.health++
				player.repairCooldown = RepairCooldown
			}
		}
	}
}

func (base *Base) render(camera *sdl.Rect, surface *sdl.Surface) {
	borderWidth := base.rect.W - openingWidth
	borderWidthA := borderWidth / 2
	borderWidthB := borderWidth - borderWidthA + 1
	if borderWidth < 0 {
		panic("Bad border width")
	}
	rects := []sdl.Rect{
		{
			X: base.rect.X,
			Y: base.rect.Y,
			W: 1,
			H: base.rect.H,
		},
		{
			X: base.rect.X + base.rect.W,
			Y: base.rect.Y,
			W: 1,
			H: base.rect.H,
		},
		{
			X: base.rect.X,
			Y: base.rect.Y,
			W: borderWidthA,
			H: 1,
		},
		{
			X: base.rect.X + borderWidthA + openingWidth,
			Y: base.rect.Y,
			W: borderWidthB,
			H: 1,
		},
		{
			X: base.rect.X,
			Y: base.rect.Y + base.rect.H,
			W: borderWidthA,
			H: 1,
		},
		{
			X: base.rect.X + borderWidthA + openingWidth,
			Y: base.rect.Y + base.rect.H,
			W: borderWidthB,
			H: 1,
		},
	}

	for _, rect := range rects {
		if camera.HasIntersection(&rect) {
			cameraCompensatedRect := sdl.Rect{
				X: rect.X - camera.X,
				Y: rect.Y - camera.Y,
				W: rect.W,
				H: rect.H,
			}
			surface.FillRect(&cameraCompensatedRect, (*base.owner).color2)
		}
	}
}

func (base *Base) build(gameMap *GameMap) {
	borderWidth := base.rect.W - openingWidth
	borderWidthA := borderWidth / 2
	if borderWidth < 0 {
		panic("Bad border width")
	}
	if base.rect.H < 9 {
		panic("Bad border height")
	}
	if gameMap.width-base.rect.X-base.rect.W <= 0 {
		panic("Bad base x location")
	}
	if gameMap.height-base.rect.Y-base.rect.H <= 0 {
		panic("Bad base y location")
	}
	if base.rect.X < 0 || base.rect.Y < 0 {
		panic("Bad base negative location")
	}
	for x := base.rect.X; x < base.rect.X+base.rect.W+1; x++ {
		for y := base.rect.Y; y < base.rect.Y+base.rect.H+1; y++ {
			gameMap.tiles[x][y] = 0
		}
	}
	for y := base.rect.Y; y < base.rect.Y+base.rect.H; y++ {
		gameMap.tiles[base.rect.X][y] = 4
		gameMap.tiles[base.rect.X+base.rect.W][y] = 4
	}
	for x := base.rect.X; x < base.rect.X+borderWidthA; x++ {
		gameMap.tiles[x][base.rect.Y] = 4
		gameMap.tiles[x][base.rect.Y+base.rect.H] = 4
	}
	for x := base.rect.X + borderWidthA + openingWidth; x < base.rect.X+base.rect.W+1; x++ {
		gameMap.tiles[x][base.rect.Y] = 4
		gameMap.tiles[x][base.rect.Y+base.rect.H] = 4
	}
}

func createBases(players *[]*Player, gameMap *GameMap) *[]*Base {
	bases := &[]*Base{}
	for ownerID, player := range *players {
		*bases = append(*bases, &Base{
			rect: sdl.Rect{
				X: player.posX - 14,
				Y: player.posY - 14,
				W: 35,
				H: 35,
			},
			owner: (*players)[ownerID],
		})
		(*bases)[ownerID].build(gameMap)
	}
	return bases
}