package ru.deadsoftware.cavedroid.game;

import com.badlogic.gdx.Input;
import com.badlogic.gdx.graphics.g2d.TextureRegion;
import com.badlogic.gdx.utils.TimeUtils;
import ru.deadsoftware.cavedroid.CaveGame;
import ru.deadsoftware.cavedroid.GameScreen;
import ru.deadsoftware.cavedroid.game.mobs.Pig;
import ru.deadsoftware.cavedroid.misc.Assets;
import ru.deadsoftware.cavedroid.misc.ControlMode;
import ru.deadsoftware.cavedroid.misc.states.AppState;
import ru.deadsoftware.cavedroid.misc.states.GameState;

import static ru.deadsoftware.cavedroid.GameScreen.GP;

public class GameInput {

    private boolean checkSwim() {
        return GameItems.isFluid(GP.world.getForeMap(GP.player.getMapX(), GP.player.getLowerMapY()));
    }

    @SuppressWarnings("IntegerDivisionInFloatingPointContext")
    private boolean insideCreativeInv(float screenX, float screenY) {
        TextureRegion creative = Assets.textureRegions.get("creative");
        return (screenX > GP.renderer.getWidth() / 2 - creative.getRegionWidth() / 2 &&
                screenX < GP.renderer.getWidth() / 2 + creative.getRegionWidth() / 2 &&
                screenY > GP.renderer.getHeight() / 2 - creative.getRegionHeight() / 2 &&
                screenY < GP.renderer.getHeight() / 2 + creative.getRegionHeight() / 2);
    }

    private void wasdPressed(int keycode) {
        if (GP.controlMode == ControlMode.WALK || !CaveGame.TOUCH) {
            switch (keycode) {
                case Input.Keys.A:
                    GP.player.mov.x = -GamePhysics.PL_SPEED;
                    GP.player.setDir(0);
                    if (CaveGame.TOUCH && checkSwim()) GP.player.swim = true;
                    break;
                case Input.Keys.D:
                    GP.player.mov.x = GamePhysics.PL_SPEED;
                    GP.player.setDir(1);
                    if (CaveGame.TOUCH && checkSwim()) GP.player.swim = true;
                    break;
            }
        } else {
            switch (keycode) {
                case Input.Keys.A:
                    GP.curX--;
                    break;
                case Input.Keys.D:
                    GP.curX++;
                    break;
                case Input.Keys.W:
                    GP.curY--;
                    break;
                case Input.Keys.S:
                    GP.curY++;
                    break;
            }
            GP.blockDmg = 0;
        }
    }

    public void keyDown(int keycode) {
        GP.isKeyDown = true;
        GP.keyDownCode = keycode;
        if (keycode == Input.Keys.W || keycode == Input.Keys.A ||
                keycode == Input.Keys.S || keycode == Input.Keys.D) {
            wasdPressed(keycode);
        } else switch (keycode) {
            case Input.Keys.ALT_LEFT:
                if (CaveGame.TOUCH) {
                    GP.controlMode = GP.controlMode == ControlMode.WALK ? ControlMode.CURSOR : ControlMode.WALK;
                }
                break;

            case Input.Keys.SPACE:
                if (checkSwim()) {
                    GP.player.swim = true;
                } else if (GP.player.canJump) {
                    GP.player.mov.add(0, -7);
                } else if (!GP.player.flyMode && GP.player.gameMode == 1) {
                    GP.player.flyMode = true;
                    GP.player.mov.y = 0;
                } else if (GP.player.flyMode) {
                    GP.player.mov.y = -GamePhysics.PL_SPEED;
                }
                break;

            case Input.Keys.CONTROL_LEFT:
                GP.player.mov.y = GamePhysics.PL_SPEED;
                break;

            case Input.Keys.E:
                if (CaveGame.GAME_STATE == GameState.PLAY){
                    switch (GP.player.gameMode) {
                        case 0:
                            //TODO survival inv
                            break;
                        case 1:
                            CaveGame.GAME_STATE = GameState.CREATIVE_INV;
                            break;
                    }
                } else {
                    CaveGame.GAME_STATE = GameState.PLAY;
                }
                break;

            case Input.Keys.G:
                GP.mobs.add(new Pig(GP.curX * 16, GP.curY * 16));
                break;

            case Input.Keys.Q:
                GP.world.placeToForeground(GP.curX, GP.curY, 8);
                break;

            case Input.Keys.ESCAPE:
            case Input.Keys.BACK:
                CaveGame.APP_STATE = AppState.SAVE;
                CaveGame.GAME_STATE = GameState.PAUSE;
                break;

            case Input.Keys.F1:
                GameScreen.SHOW_DEBUG = !GameScreen.SHOW_DEBUG;
                break;

            case Input.Keys.M:
                GameScreen.SHOW_MAP = !GameScreen.SHOW_MAP;
                break;
        }
    }

    public void keyUp(int keycode) {
        switch (keycode) {
            case Input.Keys.A:
            case Input.Keys.D:
                GP.player.mov.x = 0;
                if (CaveGame.TOUCH && GP.player.swim) GP.player.swim = false;
                break;

            case Input.Keys.SPACE:
            case Input.Keys.CONTROL_LEFT:
                if (GP.player.flyMode) GP.player.mov.y = 0;
                if (GP.player.swim) GP.player.swim = false;
                break;
        }
    }

    public void touchDown(float touchX, float touchY, int button) {
        GP.touchDownTime = TimeUtils.millis();
        GP.isTouchDown = true;
        GP.touchDownBtn = button;
        GP.touchDownX = touchX;
        GP.touchDownY = touchY;
    }

    public void touchUp(float screenX, float screenY, int button) {
        if (CaveGame.TOUCH && GP.isKeyDown) {
            keyUp(GP.keyDownCode);
            GP.isKeyDown = false;
        }
        TextureRegion hotbar = Assets.textureRegions.get("hotbar");
        TextureRegion creative = Assets.textureRegions.get("creative");
        if (GP.isTouchDown) {
            if (CaveGame.GAME_STATE == GameState.CREATIVE_INV && insideCreativeInv(screenX, screenY)) {
                int ix = (int) (screenX - (GP.renderer.getWidth() / 2 - creative.getRegionWidth() / 2 + 8)) / 18;
                int iy = (int) (screenY - (GP.renderer.getHeight() / 2 - creative.getRegionHeight() / 2 + 18)) / 18;
                int item = GP.creativeScroll * 8 + (ix + iy * 8);
                if (ix >= 8 || ix < 0 || iy < 0 || iy >= 5) item = -1;
                if (item >= 0 && item < GameItems.getItemsSize()) {
                    System.arraycopy(GP.player.inventory, 0, GP.player.inventory, 1, 8);
                    GP.player.inventory[0] = item;
                }
            } else if (CaveGame.GAME_STATE == GameState.CREATIVE_INV) {
                CaveGame.GAME_STATE = GameState.PLAY;
            } else if (screenY < hotbar.getRegionHeight() &&
                    screenX > GP.renderer.getWidth() / 2 - (float) hotbar.getRegionWidth() / 2 &&
                    screenX < GP.renderer.getWidth() / 2 + (float) hotbar.getRegionWidth() / 2) {
                GP.player.slot = (int) ((screenX - (GP.renderer.getWidth() / 2 - hotbar.getRegionWidth() / 2)) / 20);
            } else if (button == Input.Buttons.RIGHT) {
                GP.useItem(GP.curX, GP.curY,
                        GP.player.inventory[GP.player.slot], false);
            } else if (button == Input.Buttons.LEFT) {
                GP.blockDmg = 0;
            }
        }
        GP.isTouchDown = false;
    }

    public void touchDragged(float screenX, float screenY) {
        if (CaveGame.GAME_STATE == GameState.CREATIVE_INV && Math.abs(screenY - GP.touchDownY) > 16) {
            if (insideCreativeInv(screenX, screenY)) {
                GP.creativeScroll -= (screenY - GP.touchDownY) / 16;
                GP.touchDownX = screenX;
                GP.touchDownY = screenY;
                if (GP.creativeScroll < 0) GP.creativeScroll = 0;
                if (GP.creativeScroll > GameProc.MAX_CREATIVE_SCROLL)
                    GP.creativeScroll = GameProc.MAX_CREATIVE_SCROLL;
            }
        }
    }

    public void scrolled(int amount) {
        switch (CaveGame.GAME_STATE) {
            case PLAY:
                GP.player.slot += amount;
                if (GP.player.slot < 0) GP.player.slot = 8;
                if (GP.player.slot > 8) GP.player.slot = 0;
                break;
            case CREATIVE_INV:
                GP.creativeScroll += amount;
                if (GP.creativeScroll < 0) GP.creativeScroll = 0;
                if (GP.creativeScroll > GameProc.MAX_CREATIVE_SCROLL)
                    GP.creativeScroll = GameProc.MAX_CREATIVE_SCROLL;
                break;
        }
    }

}