#include <SDL3/SDL_stdinc.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "php.h"
#include "php_sdl3.h"
#include "helper.h"
#include "sdl3_image.h"
#include "sdl3_ttf.h"
#include "sdl3_events.h"
#include <SDL3/SDL.h>
#include <SDL3_gfx/SDL3_gfxPrimitives.h>
#include <math.h>

// Resource handles (nicht static, damit sie in anderen Modulen verfügbar sind)
int le_sdl_window;
int le_sdl_renderer;
int le_sdl_texture;

// Destructor for window resource
static void sdl_window_dtor(zend_resource *rsrc) {
    SDL_Window *win = (SDL_Window *)rsrc->ptr;
    if (win) {
        SDL_DestroyWindow(win);
    }
}

// Destructor for renderer resource
static void sdl_renderer_dtor(zend_resource *rsrc) {
    SDL_Renderer *ren = (SDL_Renderer *)rsrc->ptr;
    if (ren) {
        SDL_DestroyRenderer(ren);
    }
}

// Destructor for texture resource
static void sdl_texture_dtor(zend_resource *rsrc) {
    SDL_Texture *tex = (SDL_Texture *)rsrc->ptr;
    if (tex) {
        SDL_DestroyTexture(tex);
    }
}

PHP_MINIT_FUNCTION(sdl3) {
    le_sdl_window = zend_register_list_destructors_ex(sdl_window_dtor, NULL, "SDL_Window", module_number);
    le_sdl_renderer = zend_register_list_destructors_ex(sdl_renderer_dtor, NULL, "SDL_Renderer", module_number);
    le_sdl_texture = zend_register_list_destructors_ex(sdl_texture_dtor, NULL, "SDL_Texture", module_number);

    // Registriere SDL3_image und SDL3_ttf Resources
    sdl3_image_register_resources(module_number);
    sdl3_ttf_register_resources(module_number);

    // Registriere Event-Konstanten
    sdl3_events_register_constants(module_number);

    // SDL Init Flags
    REGISTER_LONG_CONSTANT("SDL_INIT_VIDEO", SDL_INIT_VIDEO, CONST_CS | CONST_PERSISTENT);
    REGISTER_LONG_CONSTANT("SDL_INIT_AUDIO", SDL_INIT_AUDIO, CONST_CS | CONST_PERSISTENT);
    REGISTER_LONG_CONSTANT("SDL_INIT_EVENTS", SDL_INIT_EVENTS, CONST_CS | CONST_PERSISTENT);

    // SDL Window Flags
    REGISTER_LONG_CONSTANT("SDL_WINDOW_FULLSCREEN", SDL_WINDOW_FULLSCREEN, CONST_CS | CONST_PERSISTENT);
    REGISTER_LONG_CONSTANT("SDL_WINDOW_OPENGL", SDL_WINDOW_OPENGL, CONST_CS | CONST_PERSISTENT);
    REGISTER_LONG_CONSTANT("SDL_WINDOW_HIDDEN", SDL_WINDOW_HIDDEN, CONST_CS | CONST_PERSISTENT);
    REGISTER_LONG_CONSTANT("SDL_WINDOW_BORDERLESS", SDL_WINDOW_BORDERLESS, CONST_CS | CONST_PERSISTENT);
    REGISTER_LONG_CONSTANT("SDL_WINDOW_RESIZABLE", SDL_WINDOW_RESIZABLE, CONST_CS | CONST_PERSISTENT);
    REGISTER_LONG_CONSTANT("SDL_WINDOW_MINIMIZED", SDL_WINDOW_MINIMIZED, CONST_CS | CONST_PERSISTENT);
    REGISTER_LONG_CONSTANT("SDL_WINDOW_MAXIMIZED", SDL_WINDOW_MAXIMIZED, CONST_CS | CONST_PERSISTENT);
    REGISTER_LONG_CONSTANT("SDL_WINDOW_HIGH_PIXEL_DENSITY", SDL_WINDOW_HIGH_PIXEL_DENSITY, CONST_CS | CONST_PERSISTENT);

    // SDL Pixel Formats
    REGISTER_LONG_CONSTANT("SDL_PIXELFORMAT_RGBA8888", SDL_PIXELFORMAT_RGBA8888, CONST_CS | CONST_PERSISTENT);
    REGISTER_LONG_CONSTANT("SDL_PIXELFORMAT_ARGB8888", SDL_PIXELFORMAT_ARGB8888, CONST_CS | CONST_PERSISTENT);
    REGISTER_LONG_CONSTANT("SDL_PIXELFORMAT_BGRA8888", SDL_PIXELFORMAT_BGRA8888, CONST_CS | CONST_PERSISTENT);
    REGISTER_LONG_CONSTANT("SDL_PIXELFORMAT_ABGR8888", SDL_PIXELFORMAT_ABGR8888, CONST_CS | CONST_PERSISTENT);

    // SDL Texture Access
    REGISTER_LONG_CONSTANT("SDL_TEXTUREACCESS_STATIC", SDL_TEXTUREACCESS_STATIC, CONST_CS | CONST_PERSISTENT);
    REGISTER_LONG_CONSTANT("SDL_TEXTUREACCESS_STREAMING", SDL_TEXTUREACCESS_STREAMING, CONST_CS | CONST_PERSISTENT);
    REGISTER_LONG_CONSTANT("SDL_TEXTUREACCESS_TARGET", SDL_TEXTUREACCESS_TARGET, CONST_CS | CONST_PERSISTENT);

    // SDL Blend Modes
    REGISTER_LONG_CONSTANT("SDL_BLENDMODE_NONE", SDL_BLENDMODE_NONE, CONST_CS | CONST_PERSISTENT);
    REGISTER_LONG_CONSTANT("SDL_BLENDMODE_BLEND", SDL_BLENDMODE_BLEND, CONST_CS | CONST_PERSISTENT);
    REGISTER_LONG_CONSTANT("SDL_BLENDMODE_ADD", SDL_BLENDMODE_ADD, CONST_CS | CONST_PERSISTENT);
    REGISTER_LONG_CONSTANT("SDL_BLENDMODE_MOD", SDL_BLENDMODE_MOD, CONST_CS | CONST_PERSISTENT);
    REGISTER_LONG_CONSTANT("SDL_BLENDMODE_MUL", SDL_BLENDMODE_MUL, CONST_CS | CONST_PERSISTENT);

    return SUCCESS;
}

PHP_FUNCTION(sdl_init) {
    zend_long flags;
    if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &flags) == FAILURE) {
        RETURN_THROWS();
    }
    if (SDL_Init((Uint32)flags) < 0) {
        RETURN_FALSE;
    }
    RETURN_TRUE;
}

PHP_FUNCTION(sdl_quit) {
    SDL_Quit();
}

PHP_FUNCTION(sdl_create_window) {
    char *title;
    size_t title_len;
    zend_long w, h, flags = 0;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "sll|l", &title, &title_len, &w, &h, &flags) == FAILURE) {
        RETURN_THROWS();
    }

    SDL_Window *win = SDL_CreateWindow(title, (int)w, (int)h, (SDL_WindowFlags)flags);
    if (!win) {
        RETURN_FALSE;
    }
    RETURN_RES(zend_register_resource(win, le_sdl_window));
}

PHP_FUNCTION(sdl_destroy_window) {
    zval *win_res;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &win_res) == FAILURE) {
        RETURN_THROWS();
    }

    // This will call the destructor and free the resource
    zend_list_close(Z_RES_P(win_res));
    RETURN_TRUE;
}

PHP_FUNCTION(sdl_destroy_renderer) {
    zval *ren_res;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &ren_res) == FAILURE) {
        RETURN_THROWS();
    }

    // This will call the destructor and free the resource
    zend_list_close(Z_RES_P(ren_res));
    RETURN_TRUE;
}

PHP_FUNCTION(sdl_get_window_id) {
    zval *win_res;
    SDL_Window *win;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &win_res) == FAILURE) {
        RETURN_THROWS();
    }

    win = (SDL_Window *)zend_fetch_resource(Z_RES_P(win_res), "SDL_Window", le_sdl_window);
    if (!win) {
        RETURN_FALSE;
    }

    SDL_WindowID window_id = SDL_GetWindowID(win);
    RETURN_LONG(window_id);
}

PHP_FUNCTION(sdl_create_renderer) {
    zval *win_res;
    SDL_Window *win;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &win_res) == FAILURE) {
        RETURN_THROWS();
    }

    win = (SDL_Window *)zend_fetch_resource(Z_RES_P(win_res), "SDL_Window", le_sdl_window);
    if (!win) {
        RETURN_FALSE;
    }

    SDL_Renderer *ren = SDL_CreateRenderer(win, NULL);
    if (!ren) {
        RETURN_FALSE;
    }
    RETURN_RES(zend_register_resource(ren, le_sdl_renderer));
}

PHP_FUNCTION(sdl_set_render_draw_color) {
    zval *ren_res;
    SDL_Renderer *ren;
    zend_long r, g, b, a;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "rllll", &ren_res, &r, &g, &b, &a) == FAILURE) {
        RETURN_THROWS();
    }

    ren = (SDL_Renderer *)zend_fetch_resource(Z_RES_P(ren_res), "SDL_Renderer", le_sdl_renderer);
    if (!ren) {
        RETURN_FALSE;
    }

    SDL_SetRenderDrawColor(ren, (Uint8)r, (Uint8)g, (Uint8)b, (Uint8)a);
    RETURN_TRUE;
}

PHP_FUNCTION(sdl_render_clear) {
    zval *ren_res;
    SDL_Renderer *ren;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &ren_res) == FAILURE) {
        RETURN_THROWS();
    }

    ren = (SDL_Renderer *)zend_fetch_resource(Z_RES_P(ren_res), "SDL_Renderer", le_sdl_renderer);
    if (!ren) {
        RETURN_FALSE;
    }

    SDL_RenderClear(ren);
    RETURN_TRUE;
}

PHP_FUNCTION(sdl_render_fill_rect) {
    zval *ren_res;
    SDL_Renderer *ren;
    zval *rect_arr;
    HashTable *rect_ht;
    zval *data;
    zend_long x, y, w, h;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "ra", &ren_res, &rect_arr) == FAILURE) {
        RETURN_THROWS();
    }

    ren = (SDL_Renderer *)zend_fetch_resource(Z_RES_P(ren_res), "SDL_Renderer", le_sdl_renderer);
    if (!ren) {
        RETURN_FALSE;
    }

    rect_ht = Z_ARRVAL_P(rect_arr);
    if (((data = zend_hash_str_find(rect_ht, "x", 1)) != NULL && (x = zval_get_long(data), true)) &&
        ((data = zend_hash_str_find(rect_ht, "y", 1)) != NULL && (y = zval_get_long(data), true)) &&
        ((data = zend_hash_str_find(rect_ht, "w", 1)) != NULL && (w = zval_get_long(data), true)) &&
        ((data = zend_hash_str_find(rect_ht, "h", 1)) != NULL && (h = zval_get_long(data), true))) {

        SDL_FRect rect = {(float)x, (float)y, (float)w, (float)h};
        SDL_RenderFillRect(ren, &rect);
        RETURN_TRUE;
    }
    
    zend_throw_error(NULL, "Invalid rectangle array passed to sdl_render_fill_rect. Expected ['x'=>int, 'y'=>int, 'w'=>int, 'h'=>int]");
    RETURN_THROWS();
}

PHP_FUNCTION(sdl_render_rect) {
    zval *ren_res;
    SDL_Renderer *ren;
    zval *rect_arr;
    HashTable *rect_ht;
    zval *data;
    zend_long x, y, w, h;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "ra", &ren_res, &rect_arr) == FAILURE) {
        RETURN_THROWS();
    }

    ren = (SDL_Renderer *)zend_fetch_resource(Z_RES_P(ren_res), "SDL_Renderer", le_sdl_renderer);
    if (!ren) {
        RETURN_FALSE;
    }

    rect_ht = Z_ARRVAL_P(rect_arr);
    if (((data = zend_hash_str_find(rect_ht, "x", 1)) != NULL && (x = zval_get_long(data), true)) &&
        ((data = zend_hash_str_find(rect_ht, "y", 1)) != NULL && (y = zval_get_long(data), true)) &&
        ((data = zend_hash_str_find(rect_ht, "w", 1)) != NULL && (w = zval_get_long(data), true)) &&
        ((data = zend_hash_str_find(rect_ht, "h", 1)) != NULL && (h = zval_get_long(data), true))) {

        SDL_FRect rect = {(float)x, (float)y, (float)w, (float)h};
        SDL_RenderRect(ren, &rect);
        RETURN_TRUE;
    }

    zend_throw_error(NULL, "Invalid rectangle array passed to sdl_render_rect. Expected ['x'=>int, 'y'=>int, 'w'=>int, 'h'=>int]");
    RETURN_THROWS();
}

PHP_FUNCTION(sdl_render_present) {
    zval *ren_res;
    SDL_Renderer *ren;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &ren_res) == FAILURE) {
        RETURN_THROWS();
    }

    ren = (SDL_Renderer *)zend_fetch_resource(Z_RES_P(ren_res), "SDL_Renderer", le_sdl_renderer);
    if (!ren) {
        RETURN_FALSE;
    }

    SDL_RenderPresent(ren);
    RETURN_TRUE;
}

PHP_FUNCTION(sdl_delay) {
    zend_long ms;
    if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &ms) == FAILURE) {
        RETURN_THROWS();
    }
    SDL_Delay((Uint32)ms);
}

PHP_FUNCTION(sdl_get_error) {
    const char *error = SDL_GetError();
    RETURN_STRING(error);
}

PHP_FUNCTION(sdl_create_texture_from_surface) {
    zval *ren_res, *surf_res;
    SDL_Renderer *renderer;
    SDL_Surface *surface;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "rr", &ren_res, &surf_res) == FAILURE) {
        RETURN_THROWS();
    }

    renderer = (SDL_Renderer *)zend_fetch_resource(Z_RES_P(ren_res), "SDL_Renderer", le_sdl_renderer);
    if (!renderer) {
        RETURN_FALSE;
    }

    surface = (SDL_Surface *)zend_fetch_resource(Z_RES_P(surf_res), "SDL_Surface", le_sdl_surface);
    if (!surface) {
        RETURN_FALSE;
    }

    SDL_Texture *texture = SDL_CreateTextureFromSurface(renderer, surface);
    if (!texture) {
        php_error_docref(NULL, E_WARNING, "Failed to create texture: %s", SDL_GetError());
        RETURN_FALSE;
    }

    RETURN_RES(zend_register_resource(texture, le_sdl_texture));
}

PHP_FUNCTION(sdl_render_texture) {
    zval *ren_res, *tex_res;
    SDL_Renderer *renderer;
    SDL_Texture *texture;
    zval *dst_arr = NULL;
    HashTable *dst_ht;
    zval *data;
    zend_long x, y, w, h;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "rr|a", &ren_res, &tex_res, &dst_arr) == FAILURE) {
        RETURN_THROWS();
    }

    renderer = (SDL_Renderer *)zend_fetch_resource(Z_RES_P(ren_res), "SDL_Renderer", le_sdl_renderer);
    if (!renderer) {
        RETURN_FALSE;
    }

    texture = (SDL_Texture *)zend_fetch_resource(Z_RES_P(tex_res), "SDL_Texture", le_sdl_texture);
    if (!texture) {
        RETURN_FALSE;
    }

    if (dst_arr != NULL) {
        // Mit Zielrechteck
        dst_ht = Z_ARRVAL_P(dst_arr);
        if (((data = zend_hash_str_find(dst_ht, "x", 1)) != NULL && (x = zval_get_long(data), true)) &&
            ((data = zend_hash_str_find(dst_ht, "y", 1)) != NULL && (y = zval_get_long(data), true)) &&
            ((data = zend_hash_str_find(dst_ht, "w", 1)) != NULL && (w = zval_get_long(data), true)) &&
            ((data = zend_hash_str_find(dst_ht, "h", 1)) != NULL && (h = zval_get_long(data), true))) {

            SDL_FRect dstrect = {(float)x, (float)y, (float)w, (float)h};
            SDL_RenderTexture(renderer, texture, NULL, &dstrect);
            RETURN_TRUE;
        }

        zend_throw_error(NULL, "Invalid destination rectangle. Expected ['x'=>int, 'y'=>int, 'w'=>int, 'h'=>int]");
        RETURN_THROWS();
    } else {
        // Ohne Zielrechteck - volle Größe
        SDL_RenderTexture(renderer, texture, NULL, NULL);
        RETURN_TRUE;
    }
}

PHP_FUNCTION(sdl_create_texture) {
    zval *ren_res;
    SDL_Renderer *renderer;
    zend_long format, access, width, height;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "rllll", &ren_res, &format, &access, &width, &height) == FAILURE) {
        RETURN_THROWS();
    }

    renderer = (SDL_Renderer *)zend_fetch_resource(Z_RES_P(ren_res), "SDL_Renderer", le_sdl_renderer);
    if (!renderer) {
        RETURN_FALSE;
    }

    SDL_Texture *texture = SDL_CreateTexture(renderer, (Uint32)format, (int)access, (int)width, (int)height);
    if (!texture) {
        php_error_docref(NULL, E_WARNING, "Failed to create texture: %s", SDL_GetError());
        RETURN_FALSE;
    }

    RETURN_RES(zend_register_resource(texture, le_sdl_texture));
}

PHP_FUNCTION(sdl_destroy_texture) {
    zval *tex_res;
    SDL_Texture *texture;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &tex_res) == FAILURE) {
        RETURN_THROWS();
    }

    texture = (SDL_Texture *)zend_fetch_resource(Z_RES_P(tex_res), "SDL_Texture", le_sdl_texture);
    if (!texture) {
        RETURN_FALSE;
    }

    // Delete the resource to trigger the destructor
    zend_list_close(Z_RES_P(tex_res));
    RETURN_TRUE;
}

PHP_FUNCTION(sdl_set_texture_blend_mode) {
    zval *tex_res;
    SDL_Texture *texture;
    zend_long blend_mode;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "rl", &tex_res, &blend_mode) == FAILURE) {
        RETURN_THROWS();
    }

    texture = (SDL_Texture *)zend_fetch_resource(Z_RES_P(tex_res), "SDL_Texture", le_sdl_texture);
    if (!texture) {
        RETURN_FALSE;
    }

    if (SDL_SetTextureBlendMode(texture, (SDL_BlendMode)blend_mode) < 0) {
        php_error_docref(NULL, E_WARNING, "Failed to set texture blend mode: %s", SDL_GetError());
        RETURN_FALSE;
    }

    RETURN_TRUE;
}

PHP_FUNCTION(sdl_set_texture_alpha_mod) {
    zval *tex_res;
    SDL_Texture *texture;
    zend_long alpha;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "rl", &tex_res, &alpha) == FAILURE) {
        RETURN_THROWS();
    }

    texture = (SDL_Texture *)zend_fetch_resource(Z_RES_P(tex_res), "SDL_Texture", le_sdl_texture);
    if (!texture) {
        RETURN_FALSE;
    }

    if (SDL_SetTextureAlphaMod(texture, (Uint8)alpha) < 0) {
        php_error_docref(NULL, E_WARNING, "Failed to set texture alpha mod: %s", SDL_GetError());
        RETURN_FALSE;
    }

    RETURN_TRUE;
}

PHP_FUNCTION(sdl_get_render_target) {
    zval *ren_res;
    SDL_Renderer *renderer;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &ren_res) == FAILURE) {
        RETURN_THROWS();
    }

    renderer = (SDL_Renderer *)zend_fetch_resource(Z_RES_P(ren_res), "SDL_Renderer", le_sdl_renderer);
    if (!renderer) {
        RETURN_FALSE;
    }

    SDL_Texture *texture = SDL_GetRenderTarget(renderer);
    if (!texture) {
        // NULL is valid - means rendering to the screen
        RETURN_NULL();
    }

    // Return the existing texture resource (don't register a new one)
    // We just return the texture pointer as a resource
    RETURN_RES(zend_register_resource(texture, le_sdl_texture));
}

PHP_FUNCTION(sdl_set_render_target) {
    zval *ren_res;
    zval *tex_res = NULL;
    SDL_Renderer *renderer;
    SDL_Texture *texture = NULL;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "r|r!", &ren_res, &tex_res) == FAILURE) {
        RETURN_THROWS();
    }

    renderer = (SDL_Renderer *)zend_fetch_resource(Z_RES_P(ren_res), "SDL_Renderer", le_sdl_renderer);
    if (!renderer) {
        RETURN_FALSE;
    }

    if (tex_res != NULL && Z_TYPE_P(tex_res) == IS_RESOURCE) {
        texture = (SDL_Texture *)zend_fetch_resource(Z_RES_P(tex_res), "SDL_Texture", le_sdl_texture);
        if (!texture) {
            RETURN_FALSE;
        }
    }

    if (SDL_SetRenderTarget(renderer, texture) < 0) {
        php_error_docref(NULL, E_WARNING, "Failed to set render target: %s", SDL_GetError());
        RETURN_FALSE;
    }

    RETURN_TRUE;
}

PHP_FUNCTION(sdl_rounded_box)
{
    zval *ren_res;
    SDL_Renderer *ren;
    zend_long x1, y1, x2, y2, rad;
    zend_long r, g, b, a;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "rlllllllll", &ren_res, &x1, &y1, &x2, &y2, &rad, &r, &g, &b, &a) == FAILURE) {
        RETURN_THROWS();
    }

    ren = (SDL_Renderer *)zend_fetch_resource(Z_RES_P(ren_res), "SDL_Renderer", le_sdl_renderer);
    if (!ren) {
        RETURN_FALSE;
    }

    if (roundedBoxRGBA(ren, (Sint16)x1, (Sint16)y1, (Sint16)x2, (Sint16)y2, (Sint16)rad, (Uint8)r, (Uint8)g, (Uint8)b, (Uint8)a) == 0) {
        RETURN_TRUE;
    }
    RETURN_FALSE;
}

#include <math.h>

PHP_FUNCTION(sdl_rounded_box_ex)
{
    zval *ren_res;
    SDL_Renderer *ren;
    zend_long x1, y1, x2, y2;
    zend_long rad_tl, rad_tr, rad_br, rad_bl;
    zend_long r, g, b, a;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "rllllllllllll", &ren_res, &x1, &y1, &x2, &y2, &rad_tl, &rad_tr, &rad_br, &rad_bl, &r, &g, &b, &a) == FAILURE) {
        RETURN_THROWS();
    }

    ren = (SDL_Renderer *)zend_fetch_resource(Z_RES_P(ren_res), "SDL_Renderer", le_sdl_renderer);
    if (!ren) RETURN_FALSE;

    SDL_SetRenderDrawColor(ren, r, g, b, a);

    int halfw = ((Sint16)x2-(Sint16)x1) / 2;
    int halfh = ((Sint16)y2-(Sint16)y1) / 2;
    if (rad_tl > halfw) rad_tl = halfw; if (rad_tl > halfh) rad_tl = halfh;
    if (rad_tr > halfw) rad_tr = halfw; if (rad_tr > halfh) rad_tr = halfh;
    if (rad_br > halfw) rad_br = halfw; if (rad_br > halfh) rad_br = halfh;
    if (rad_bl > halfw) rad_bl = halfw; if (rad_bl > halfh) rad_bl = halfh;

    int r_left  = (rad_tl > rad_bl) ? rad_tl : rad_bl;
    int r_right = (rad_tr > rad_br) ? rad_tr : rad_br;

    // 1) center vertical band (zwischen links und rechts Radien), ganze Höhe
    SDL_FRect center = { x1 + r_left, y1, x2 - x1-r_left-r_right, y2-y1 };
    if (center.w > 0 && center.h > 0) SDL_RenderFillRect(ren, &center);

    // 2) left vertical rectangle (zwischen oberen und unteren Ecken links)
    SDL_FRect leftRect = { x1, y1 + rad_tl, r_left, y2 - y1 - rad_tl - rad_bl };
    if (leftRect.w > 0 && leftRect.h > 0) SDL_RenderFillRect(ren, &leftRect);

    // 3) right vertical rectangle (zwischen oberen und unteren Ecken rechts)
    SDL_FRect rightRect = { x2 - r_right, y1 + rad_tr, r_right, y2 - y1 - rad_tr - rad_br };
    if (rightRect.w > 0 && rightRect.h > 0) SDL_RenderFillRect(ren, &rightRect);

    // 4) Horizontale Füllrechtecke für Lücken zwischen Ecken und vertikalen Rechtecken
    // Oben links: wenn rad_tl < r_left
    if (rad_tl < r_left) {
        SDL_FRect topLeft = { x1 + rad_tl, y1, r_left - rad_tl, rad_tl };
        if (topLeft.w > 0 && topLeft.h > 0) SDL_RenderFillRect(ren, &topLeft);
    }
    // Oben rechts: wenn rad_tr < r_right
    if (rad_tr < r_right) {
        SDL_FRect topRight = { x2 - r_right, y1, r_right - rad_tr, rad_tr };
        if (topRight.w > 0 && topRight.h > 0) SDL_RenderFillRect(ren, &topRight);
    }
    // Unten rechts: wenn rad_br < r_right
    if (rad_br < r_right) {
        SDL_FRect bottomRight = { x2 - r_right, y2 - rad_br, r_right - rad_br, rad_br };
        if (bottomRight.w > 0 && bottomRight.h > 0) SDL_RenderFillRect(ren, &bottomRight);
    }
    // Unten links: wenn rad_bl < r_left
    if (rad_bl < r_left) {
        SDL_FRect bottomLeft = { x1 + rad_bl, y2 - rad_bl, r_left - rad_bl, rad_bl };
        if (bottomLeft.w > 0 && bottomLeft.h > 0) SDL_RenderFillRect(ren, &bottomLeft);
    }

    // 5) vier gefüllte Viertel-Kreise in den Ecken
    if (rad_tl > 0) filled_quarter_circle(ren, x1 + rad_tl, y1 + rad_tl, rad_tl, 0);
    if (rad_tr > 0) filled_quarter_circle(ren, x2 - rad_tr, y1 + rad_tr, rad_tr, 1);
    if (rad_br > 0) filled_quarter_circle(ren, x2 - rad_br, y2- rad_br, rad_br, 2);
    if (rad_bl > 0) filled_quarter_circle(ren, x1 + rad_bl, y2 - rad_bl, rad_bl, 3); 

    RETURN_TRUE;
}

PHP_FUNCTION(sdl_set_render_clip_rect) {
    zval *ren_res;
    SDL_Renderer *ren;
    zval *rect_arr = NULL;
    HashTable *rect_ht;
    zval *data;
    zend_long x, y, w, h;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "r|a!", &ren_res, &rect_arr) == FAILURE) {
        RETURN_THROWS();
    }

    ren = (SDL_Renderer *)zend_fetch_resource(Z_RES_P(ren_res), "SDL_Renderer", le_sdl_renderer);
    if (!ren) {
        RETURN_FALSE;
    }

    if (rect_arr == NULL || Z_TYPE_P(rect_arr) == IS_NULL) {
        // Disable clipping
        SDL_SetRenderClipRect(ren, NULL);
        RETURN_TRUE;
    }

    rect_ht = Z_ARRVAL_P(rect_arr);
    if (((data = zend_hash_str_find(rect_ht, "x", 1)) != NULL && (x = zval_get_long(data), true)) &&
        ((data = zend_hash_str_find(rect_ht, "y", 1)) != NULL && (y = zval_get_long(data), true)) &&
        ((data = zend_hash_str_find(rect_ht, "w", 1)) != NULL && (w = zval_get_long(data), true)) &&
        ((data = zend_hash_str_find(rect_ht, "h", 1)) != NULL && (h = zval_get_long(data), true))) {

        SDL_Rect rect = {(int)x, (int)y, (int)w, (int)h};
        SDL_SetRenderClipRect(ren, &rect);
        RETURN_TRUE;
    }

    zend_throw_error(NULL, "Invalid rectangle array passed to sdl_set_render_clip_rect. Expected ['x'=>int, 'y'=>int, 'w'=>int, 'h'=>int] or null");
    RETURN_THROWS();
}

PHP_FUNCTION(sdl_get_window_size) {
    zval *win_res;
    SDL_Window *win;
    int w, h;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &win_res) == FAILURE) {
        RETURN_THROWS();
    }

    win = (SDL_Window *)zend_fetch_resource(Z_RES_P(win_res), "SDL_Window", le_sdl_window);
    if (!win) {
        RETURN_FALSE;
    }

    SDL_GetWindowSize(win, &w, &h);

    array_init(return_value);
    add_index_long(return_value, 0, w);
    add_index_long(return_value, 1, h);
}

PHP_FUNCTION(sdl_start_text_input) {
    zval *win_res;
    SDL_Window *win;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &win_res) == FAILURE) {
        RETURN_THROWS();
    }

    win = (SDL_Window *)zend_fetch_resource(Z_RES_P(win_res), "SDL_Window", le_sdl_window);
    if (!win) {
        RETURN_FALSE;
    }

    SDL_StartTextInput(win);
    RETURN_TRUE;
}

PHP_FUNCTION(sdl_stop_text_input) {
    zval *win_res;
    SDL_Window *win;

    if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &win_res) == FAILURE) {
        RETURN_THROWS();
    }

    win = (SDL_Window *)zend_fetch_resource(Z_RES_P(win_res), "SDL_Window", le_sdl_window);
    if (!win) {
        RETURN_FALSE;
    }

    SDL_StopTextInput(win);
    RETURN_TRUE;
}

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_init, 0, 0, 1)
    ZEND_ARG_INFO(0, flags)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_quit, 0, 0, 0)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_create_window, 0, 0, 3)
    ZEND_ARG_INFO(0, title)
    ZEND_ARG_INFO(0, w)
    ZEND_ARG_INFO(0, h)
    ZEND_ARG_INFO(0, flags)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_destroy_window, 0, 0, 1)
    ZEND_ARG_INFO(0, window)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_destroy_renderer, 0, 0, 1)
    ZEND_ARG_INFO(0, renderer)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_get_window_id, 0, 0, 1)
    ZEND_ARG_INFO(0, window)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_create_renderer, 0, 0, 1)
    ZEND_ARG_INFO(0, window)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_set_render_draw_color, 0, 0, 5)
    ZEND_ARG_INFO(0, renderer)
    ZEND_ARG_INFO(0, r)
    ZEND_ARG_INFO(0, g)
    ZEND_ARG_INFO(0, b)
    ZEND_ARG_INFO(0, a)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_render_clear, 0, 0, 1)
    ZEND_ARG_INFO(0, renderer)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_render_fill_rect, 0, 0, 2)
    ZEND_ARG_INFO(0, renderer)
    ZEND_ARG_INFO(0, rect)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_render_rect, 0, 0, 2)
    ZEND_ARG_INFO(0, renderer)
    ZEND_ARG_INFO(0, rect)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_render_present, 0, 0, 1)
    ZEND_ARG_INFO(0, renderer)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_delay, 0, 0, 1)
    ZEND_ARG_INFO(0, ms)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_get_error, 0, 0, 0)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_create_texture_from_surface, 0, 0, 2)
    ZEND_ARG_INFO(0, renderer)
    ZEND_ARG_INFO(0, surface)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_render_texture, 0, 0, 2)
    ZEND_ARG_INFO(0, renderer)
    ZEND_ARG_INFO(0, texture)
    ZEND_ARG_INFO(0, dstrect)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_create_texture, 0, 0, 5)
    ZEND_ARG_INFO(0, renderer)
    ZEND_ARG_INFO(0, format)
    ZEND_ARG_INFO(0, access)
    ZEND_ARG_INFO(0, width)
    ZEND_ARG_INFO(0, height)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_destroy_texture, 0, 0, 1)
    ZEND_ARG_INFO(0, texture)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_set_texture_blend_mode, 0, 0, 2)
    ZEND_ARG_INFO(0, texture)
    ZEND_ARG_INFO(0, blend_mode)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_set_texture_alpha_mod, 0, 0, 2)
    ZEND_ARG_INFO(0, texture)
    ZEND_ARG_INFO(0, alpha)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_get_render_target, 0, 0, 1)
    ZEND_ARG_INFO(0, renderer)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_set_render_target, 0, 0, 1)
    ZEND_ARG_INFO(0, renderer)
    ZEND_ARG_INFO(0, texture)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_rounded_box, 0, 0, 10)
    ZEND_ARG_INFO(0, renderer)
    ZEND_ARG_INFO(0, x1)
    ZEND_ARG_INFO(0, y1)
    ZEND_ARG_INFO(0, x2)
    ZEND_ARG_INFO(0, y2)
    ZEND_ARG_INFO(0, radius)
    ZEND_ARG_INFO(0, r)
    ZEND_ARG_INFO(0, g)
    ZEND_ARG_INFO(0, b)
    ZEND_ARG_INFO(0, a)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_rounded_box_ex, 0, 0, 13)
    ZEND_ARG_INFO(0, renderer)
    ZEND_ARG_INFO(0, x1)
    ZEND_ARG_INFO(0, y1)
    ZEND_ARG_INFO(0, x2)
    ZEND_ARG_INFO(0, y2)
    ZEND_ARG_INFO(0, rad_tl)
    ZEND_ARG_INFO(0, rad_tr)
    ZEND_ARG_INFO(0, rad_br)
    ZEND_ARG_INFO(0, rad_bl)
    ZEND_ARG_INFO(0, r)
    ZEND_ARG_INFO(0, g)
    ZEND_ARG_INFO(0, b)
    ZEND_ARG_INFO(0, a)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_set_render_clip_rect, 0, 0, 1)
    ZEND_ARG_INFO(0, renderer)
    ZEND_ARG_INFO(0, rect)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_get_window_size, 0, 0, 1)
    ZEND_ARG_INFO(0, window)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_start_text_input, 0, 0, 1)
    ZEND_ARG_INFO(0, window)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_sdl_stop_text_input, 0, 0, 1)
    ZEND_ARG_INFO(0, window)
ZEND_END_ARG_INFO()

const zend_function_entry sdl3_functions[] = {
    // SDL3 Core
    PHP_FE(sdl_init, arginfo_sdl_init)
    PHP_FE(sdl_quit, arginfo_sdl_quit)
    PHP_FE(sdl_create_window, arginfo_sdl_create_window)
    PHP_FE(sdl_destroy_window, arginfo_sdl_destroy_window)
    PHP_FE(sdl_destroy_renderer, arginfo_sdl_destroy_renderer)
    PHP_FE(sdl_get_window_id, arginfo_sdl_get_window_id)
    PHP_FE(sdl_create_renderer, arginfo_sdl_create_renderer)
    PHP_FE(sdl_set_render_draw_color, arginfo_sdl_set_render_draw_color)
    PHP_FE(sdl_render_clear, arginfo_sdl_render_clear)
    PHP_FE(sdl_render_fill_rect, arginfo_sdl_render_fill_rect)
    PHP_FE(sdl_render_rect, arginfo_sdl_render_rect)
    PHP_FE(sdl_render_present, arginfo_sdl_render_present)
    PHP_FE(sdl_delay, arginfo_sdl_delay)
    PHP_FE(sdl_get_error, arginfo_sdl_get_error)
    PHP_FE(sdl_create_texture_from_surface, arginfo_sdl_create_texture_from_surface)
    PHP_FE(sdl_render_texture, arginfo_sdl_render_texture)
   PHP_FE(sdl_create_texture, arginfo_sdl_create_texture)
    PHP_FE(sdl_destroy_texture, arginfo_sdl_destroy_texture)
    PHP_FE(sdl_set_texture_blend_mode, arginfo_sdl_set_texture_blend_mode)
    PHP_FE(sdl_set_texture_alpha_mod, arginfo_sdl_set_texture_alpha_mod)
    PHP_FE(sdl_get_render_target, arginfo_sdl_get_render_target)
    PHP_FE(sdl_set_render_target, arginfo_sdl_set_render_target)
    PHP_FE(sdl_rounded_box, arginfo_sdl_rounded_box)
    PHP_FE(sdl_rounded_box_ex, arginfo_sdl_rounded_box_ex)
    PHP_FE(sdl_set_render_clip_rect, arginfo_sdl_set_render_clip_rect)
    PHP_FE(sdl_get_window_size, arginfo_sdl_get_window_size)
    PHP_FE(sdl_start_text_input, arginfo_sdl_start_text_input)
    PHP_FE(sdl_stop_text_input, arginfo_sdl_stop_text_input)

    // SDL3_image
    PHP_FE(img_load, arginfo_img_load)
    PHP_FE(img_load_texture, arginfo_img_load_texture)

    // SDL3_ttf
    PHP_FE(ttf_init, arginfo_ttf_init)
    PHP_FE(ttf_open_font, arginfo_ttf_open_font)
    PHP_FE(ttf_close_font, arginfo_ttf_close_font)
    PHP_FE(ttf_render_text_solid, arginfo_ttf_render_text_solid)
    PHP_FE(ttf_render_text_blended, arginfo_ttf_render_text_blended)
    PHP_FE(ttf_render_text_shaded, arginfo_ttf_render_text_shaded)
    PHP_FE(ttf_size_text, arginfo_ttf_size_text)

    // SDL3 Events
    PHP_FE(sdl_poll_event, arginfo_sdl_poll_event)
    PHP_FE(sdl_wait_event, arginfo_sdl_wait_event)
    PHP_FE(sdl_wait_event_timeout, arginfo_sdl_wait_event_timeout)

    PHP_FE_END
};

zend_module_entry sdl3_module_entry = {
    STANDARD_MODULE_HEADER,
    "sdl3",
    sdl3_functions,
    PHP_MINIT(sdl3),
    NULL, // MSHUTDOWN
    NULL, // RINIT
    NULL, // RSHUTDOWN
    NULL, // MINFO
    PHP_SDL3_VERSION,
    STANDARD_MODULE_PROPERTIES
};

#ifdef COMPILE_DL_SDL3
#ifdef ZTS
ZEND_TSRMLS_CACHE_DEFINE()
#endif
ZEND_GET_MODULE(sdl3)
#endif