#include "quirks.h"

#include <stdlib.h>
#include <stdbool.h>
#include <string.h>

#define LOG_MODULE "quirks"
#define LOG_ENABLE_DBG 0
#include "log.h"
#include "util.h"

static bool
is_weston(void)
{
    static bool is_weston = false;
    static bool initialized = false;

    if (!initialized) {
        initialized = true;
        is_weston = getenv("WESTON_CONFIG_FILE") != NULL;
        if (is_weston)
            LOG_WARN("applying wl_subsurface_set_desync() workaround for weston");
    }

    return is_weston;
}

void
quirk_weston_subsurface_desync_on(struct wl_subsurface *sub)
{
    if (!is_weston())
        return;

    wl_subsurface_set_desync(sub);
}

void
quirk_weston_subsurface_desync_off(struct wl_subsurface *sub)
{
    if (!is_weston())
        return;

    wl_subsurface_set_sync(sub);
}

void
quirk_weston_csd_on(struct terminal *term)
{
    if (term->window->csd_mode != CSD_YES)
        return;
    if (term->window->is_fullscreen)
        return;

    for (int i = 0; i < ALEN(term->window->csd.surface); i++)
        quirk_weston_subsurface_desync_on(term->window->csd.surface[i].sub);
}

void
quirk_weston_csd_off(struct terminal *term)
{
    if (term->window->csd_mode != CSD_YES)
        return;
    if (term->window->is_fullscreen)
        return;

    for (int i = 0; i < ALEN(term->window->csd.surface); i++)
        quirk_weston_subsurface_desync_off(term->window->csd.surface[i].sub);
}

static bool
is_sway(void)
{
    static bool is_sway = false;
    static bool initialized = false;

    if (!initialized) {
        initialized = true;
        is_sway = getenv("SWAYSOCK") != NULL;
        if (is_sway)
            LOG_WARN("applying wl_surface_damage_buffer() workaround for Sway");
    }

    return is_sway;
}

void
quirk_sway_subsurface_unmap(struct terminal *term)
{
    if (!is_sway())
        return;

    wl_surface_damage_buffer(term->window->surface.surf, 0, 0, INT32_MAX, INT32_MAX);
}