#include "inputHandler.h"
#include "raylib.h"
#include "sprite.h"
#include <stdio.h>
#include <stdlib.h>
#include <math.h>

//TODO: Macht es Sinn ein einzelnes "Game" struct zu haben, das alle möglichen Pointer hat zu allen arrays, camera, textures etc?
// Man hat einen Übergabeparameter mit dem man dann alles verändern kann, man muss nicht alles was man verändern will einzeln übergeben
void DrawRect(Vector2 rectStart, Vector2 *mousePosition){
    
    float width = GetMousePosition().x - rectStart.x;
    float height = GetMousePosition().y - rectStart.y;

    if(width < 0 && height >= 0){
        width *= -1;
        rectStart.x -= width;
    }
    else if(height < 0 && width >= 0){
        height *= -1;
        rectStart.y -= height;
    }
    else if(height < 0 && width < 0){
        height *= -1;
        width *= -1;
        rectStart.x -= width;
        rectStart.y -= height;
    }

    DrawRectangleLines(rectStart.x, rectStart.y, width, height, GREEN);
}

Vector2 GetRectangle(Vector2 rectStart){
    float width = GetMousePosition().x - rectStart.x;
    float height = GetMousePosition().y - rectStart.y;

    if(width < 0 && height >= 0){
        width *= -1;
        rectStart.x -= width;
    }
    else if(height < 0 && width >= 0){
        height *= -1;
        rectStart.y -= height;
    }
    else if(height < 0 && width < 0){
        height *= -1;
        width *= -1;
        rectStart.x -= width;
        rectStart.y -= height;
    }
    return rectStart;
}

void mouseInput(InputHandler *inputHandler, Sprite *sprites, int *spriteAmount, Texture2D *texture, Camera2D *camera){

    inputHandler->cursorPos.x = GetMousePosition().x;
    inputHandler->cursorPos.y = GetMousePosition().y;

    if(IsMouseButtonPressed(MOUSE_BUTTON_LEFT)){
        if(inputHandler->pressed == 0){
            inputHandler->rectStart.x = GetMousePosition().x;
            inputHandler->rectStart.y = GetMousePosition().y;
            inputHandler->pressed = 1;
        }
    }

    if(inputHandler->pressed){
        DrawRect(inputHandler->rectStart, &(inputHandler->cursorPos));
    }

    if(IsMouseButtonReleased(MOUSE_BUTTON_LEFT)){
        inputHandler->pressed = 0;
        float width = GetMousePosition().x - inputHandler->rectStart.x;
        float height = GetMousePosition().y - inputHandler->rectStart.y;

        // Add Sprite
        if(width + height <= 1){
            //printf("Klick\n");
            SpriteAdd(sprites, spriteAmount, texture, inputHandler->cursorPos.x + (*camera).target.x - (texture->width)/2, inputHandler->cursorPos.y + (*camera).target.y - (texture->height)/2);
        }

        // Berechnung, welche Sprites ausgewählt wurden
        Vector2 rect = GetRectangle(inputHandler->rectStart);
        width = abs(width);
        height = abs(height);

        printf("Auswahl: x: %f, y: %f, w: %f, h: %f\n", rect.x, rect.y, width, height);

        int k;
        float deltaX;
        float deltaY;
        for(k = 0; k < *spriteAmount; k++){
            deltaX = (sprites+k)->x - (rect.x + camera->target.x);
            deltaY = (sprites+k)->y - (rect.y + camera->target.y);

            printf("deltaX: %f, deltaY: %f\n", deltaX, deltaY);

            if(deltaX > 0 && deltaX < width && deltaY > 0 && deltaY < height){
                (sprites + k)->selected = 1;
                printf("%d selected\n", k);
            }
            else{
                (sprites + k)->selected = 0;
            }
        }
    }

    if(IsMouseButtonPressed(MOUSE_BUTTON_RIGHT)){
        int i;
        for(i=0;i<*spriteAmount;i++){
            if((sprites+i)->selected){
                (sprites+i)->hasDestination = 1;
                (sprites+i)->destX = inputHandler->cursorPos.x + (*camera).target.x - (texture->width)/2;
                (sprites+i)->destY = inputHandler->cursorPos.y + (*camera).target.y - (texture->height)/2;
            }
        }
    }
}


void keyboardInput(InputHandler *inputHandler, Camera2D *camera){
    if(IsKeyDown(KEY_W)){
        (*camera).target.y -= 100.0f * GetFrameTime();
    }
    if(IsKeyDown(KEY_S)){
        (*camera).target.y += 100.0f * GetFrameTime();
    }
    if(IsKeyDown(KEY_D)){
        (*camera).target.x += 100.0f * GetFrameTime();
    }
    if(IsKeyDown(KEY_A)){
        (*camera).target.x -= 100.0f * GetFrameTime();
    }
}