#include "inputbuffer.h"


/* manageInputBuffer
 * Applies keyboard input to a text input buffer. Returns 1 if the enter key was
 * pressed (there must be content in buffer)
 */
int manageInputBuffer(InputBuffer *inputBuffer, Inputs *inputs)
{
        if (!inputs->keyTyped && !inputs->keySym)
        {
                return 0;
        }

        // printf("Typed key: %d\n", inputs->keyTyped);

        if (inputs->keySym == SDLK_BACKSPACE)
        {
                // Delete last char and decrement cursor
                // position
                if (inputBuffer->cursor > 0)
                {
                        inputBuffer->buffer[--inputBuffer->cursor] = 0;
                }
        }
        else if (inputs->keySym == SDLK_RETURN && inputBuffer->cursor > 0)
        {
                return 1;
        }
        else if (
            inputs->keyTyped > 31 &&
            inputs->keyTyped < 127 &&
            inputBuffer->cursor < inputBuffer->len - 1)
        {
                inputBuffer->buffer[inputBuffer->cursor] = inputs->keyTyped;
                inputBuffer->cursor += 1;
                inputBuffer->buffer[inputBuffer->cursor] = 0;
        }

        return 0;
}