#include <stdlib.h>

#include "net.h"
#include "unicode.h"

#include "eve/eve.h"
#include "eve/eve_kbd.h"

#include "eve/screen/screen.h"
#include "eve/screen/window.h"
#include "eve/screen/kbdwin.h"
#include "eve/screen/page.h"
#include "eve/screen/form.h"

#include "eve/widget/widgets.h"

#include "status.h"
#include "root.h"

EVEFont *_app_font_default;

static EVEFont font;
static EVEScreen screen;
static EVEWindow win_status;
static EVEWindow win_main;
static EVEKbdWin win_kbd;
static EVEView view_status = {
    app_status_touch,
    app_status_draw,
    NULL
};
static EVEPageStack page_stack;

static void widgets_destroy(EVEWidget *widget, uint16_t widget_size) {
    int i;

    for (i=0; i<widget_size; i++) {
        if (widget->label) eve_free(widget->label);
        eve_widget_destroy(widget);
    }
}

EVEForm *app_form_create(EVEWindow *window, EVEPageStack *stack, APPWidgetSpec spec[], uint16_t spec_size, eve_page_destructor_t destructor) {
    EVEWidget *widgets;
    EVEWidget *widget;
    EVELabel *label;
    EVEForm *form;
    int w_size = 0;
    int i, r;

    for (i=0; i<spec_size; i++) {
        w_size += eve_widget_size(spec[i].widget.type);
    }
    form = eve_malloc(sizeof(EVEForm));
    if (form == NULL) {
        return NULL;
    }

    widgets = eve_malloc(w_size);
    if (widgets == NULL) {
        eve_free(form);
        return NULL;
    }

    widget = widgets;
    for (i=0; i<spec_size; i++) {
        r = eve_widget_create(widget, spec[i].widget.type, &spec[i].widget.g, &spec[i].widget.spec);
        if (r) {
            widgets_destroy(widgets, i);
            eve_free(widgets);
            eve_free(form);
            return NULL;
        }
        if (spec[i].label.title) {
            label = eve_malloc(sizeof(EVELabel));
            if (label == NULL) {
                eve_widget_destroy(widget);
                widgets_destroy(widgets, i);
                eve_free(widgets);
                eve_free(form);
                return NULL;
            }
            eve_label_init(label, &spec[i].label.g, spec[i].label.font, spec[i].label.title);
            eve_widget_set_label(widget, label);
        }
        widget = eve_widget_next(widget);
    }

    if (destructor == NULL) destructor = (eve_page_destructor_t)app_form_destroy;
    eve_form_init(form, window, stack, widgets, spec_size, destructor);

    return form;
}

void app_form_destroy(EVEForm *form) {
    widgets_destroy(form->widget, form->widget_size);
    eve_free(form->widget);
    eve_free(form);
}

void app_root_init(eve_page_constructor_t home_page) {
    EVERect g;

    _app_font_default = &font;
    eos_spi_dev_start(EOS_DEV_DISP);

    eve_brightness(0x40);
    eve_font_init(&font, APP_FONT_HANDLE);
    eve_screen_init(&screen, APP_SCREEN_W, APP_SCREEN_H);

    g.x = 0;
    g.y = 0;
    g.w = APP_SCREEN_W;
    g.h = APP_STATUS_H;
    eve_window_init(&win_status, &g, &view_status, &screen);
    g.x = 0;
    g.y = APP_STATUS_H;
    g.w = APP_SCREEN_W;
    g.h = APP_SCREEN_H - APP_STATUS_H;
    eve_window_init(&win_main, &g, NULL, &screen);
    eve_kbdwin_init(&win_kbd, &screen);

    eve_page_stack_init(&page_stack);
    eve_page_create(&win_main, &page_stack, home_page);

    eve_window_append(&win_status);
    eve_window_append(&win_main);
    eve_kbdwin_append(&win_kbd);
    eve_screen_draw(&screen);

    eos_spi_dev_stop();

    eos_net_acquire_for_evt(EOS_EVT_UI | EVE_ETYPE_INTR, 1);
}