#include "button.h"
#include "../game.h"
#include "stdio.h"
#include "stdlib.h"
#include "raylib.h"
#include "string.h"

Button * ButtonInitButton(Texture2D textures[4], Vector2 *position, char *text, int textLEN, int fontSize, int id){
    Button *button = malloc(sizeof(Button));

    button->textures[0] = textures[0];
    button->textures[1] = textures[1];
    button->textures[2] = textures[2];
    button->textures[3] = textures[3];

    button->position = (Vector2){position->x, position->y};
    button->centerPosition = (Vector2){position->x + textures[0].width/2, position->y + textures[0].height/2};
    
    strncpy(button->text, text, textLEN);
    button->state = BUTTON_STATE_DEFAULT;
    button->id = id;

    button->fontSize = fontSize;

    return button;
}

void ButtonExecuteButton(Button *button, Game *game){
    button->state = BUTTON_STATE_DEFAULT;
    switch(button->id){
        case BUTTON_ID_CONTINUE: // continue game
            game->screen = SCREEN_GAME;
            break;
        case BUTTON_ID_EXIT:
            game->screen = SCREEN_EXIT;
            break;
        case BUTTON_ID_START_GAME:
            game->screen = SCREEN_GAME;
            break;
        default:
            printf("\n\n\n\n\n\n Unsupported Button ID %d \n\n\n\n\n\n", button->id);
            break;
    }
}

void ButtonDrawButton(Button * button){
    // erst Button Texture, dann Text zentriert drauf
    DrawTexture(button->textures[button->state], button->position.x, button->position.y, WHITE);
    DrawText(button->text, button->centerPosition.x - MeasureText(button->text, button->fontSize)/2, button->centerPosition.y - button->fontSize/2, button->fontSize, BLACK);
}

int ButtonUpdateButtonState(Button * button){
    if(button->state == BUTTON_STATE_RELEASED){
        // Wir verlassen den RELEASED State automatisch wenn wir den Code des Buttons ausführen, siehe ButtonExecuteButton
        // So lange der Code nicht ausgeführt wurde bleiben wir im state damit er definitiv im nächsten Frame ausgeführt wird
        return button->state;
    }
    else if(GetMouseX() > button->position.x &&
            GetMouseX() < button->position.x + button->textures[button->state].width &&
            GetMouseY() > button->position.y &&
            GetMouseY() < button->position.y + button->textures[button->state].height
    ){
        if(IsMouseButtonDown(MOUSE_BUTTON_LEFT)){
            return button->state = BUTTON_STATE_PRESSED;
        }
        else if(button->state == BUTTON_STATE_PRESSED){
            return button->state = BUTTON_STATE_RELEASED;
        }
        return button->state = BUTTON_STATE_HOVERED;
    }
    return button->state = BUTTON_STATE_DEFAULT;
}