#include "../../include/mgui/label.h"
#include "../../include/resource_loader.h"
#include "../../include/common.h"
#include "../../include/alloc.h"
#include <mgl/mgl.h>
#include <mgl/window/event.h>
#include <string.h>
#include <assert.h>

/* TODO: Scale label by scale setting */

static int min_int(int a, int b) {
    return a <= b ? a : b;
}

mgui_label* mgui_label_create(const char *str, size_t size, unsigned char character_size) {
    /* TODO: Make this work for character size >= 100 */
    if(character_size >= 100)
        character_size = 99;

    mgui_label *label = mgui_alloc(sizeof(mgui_label));
    mgui_widget_init(&label->widget, MGUI_WIDGET_LABEL);
    label->str = mgui_alloc(size);
    label->str_size = size;
    memcpy(label->str, str, size);
    mgl_text_init(&label->text, mgui_get_font(MGUI_FONT_LATIN, character_size), label->str, label->str_size);
    return label;
}

void mgui_label_destroy(mgui_label *label) {
    mgl_text_deinit(&label->text);
    mgui_free(label->str);
    mgui_free(label);
}

mgui_widget* mgui_label_to_widget(mgui_label *list) {
    return &list->widget;
}

mgui_label* mgui_widget_to_label(mgui_widget *widget) {
    assert(widget->type == MGUI_WIDGET_LABEL);
    return (mgui_label*)widget;
}

void mgui_label_set_position(mgui_label *self, mgl_vec2i position) {
    mgl_text_set_position(&self->text, (mgl_vec2f){ position.x, position.y });
}

void mgui_label_calculate_size(mgui_label *self, mgl_vec2i max_size) {
    const mgl_vec2f text_bounds = mgl_text_get_bounds(&self->text);
    const mgl_vec2i text_bounds_int = (mgl_vec2i){ text_bounds.x, text_bounds.y };
    self->widget.size.x = min_int(text_bounds_int.x, max_size.x);
    self->widget.size.y = min_int(text_bounds_int.y, max_size.y);
}

void mgui_label_on_event(mgui_label *self, mgl_window *window, mgl_event *event) {
    /* TODO: Implement */
    (void)self;
    (void)window;
    (void)event;
}

void mgui_label_draw(mgui_label *self, mgl_window *window) {
    const mgl_vec2f text_bounds = mgl_text_get_bounds(&self->text);
    const mgl_vec2i text_bounds_int = (mgl_vec2i){ text_bounds.x, text_bounds.y };
    if(mgui_rectangle_intersects_with_scissor((mgl_vec2i){ self->text.position.x, self->text.position.y }, text_bounds_int, window))
        mgl_text_draw(mgl_get_context(), &self->text);
}