/*
 * Tuxánci 2 - A first person shooter
 * Copyright (C) 2025-2026  Connor Thomson
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#include <stdbool.h>
#include <stdlib.h>
#include "ta_sdl.h"
#include "logging.h"
#include "main.h"

static void ta_sdl_handle_error(void) {
    const char *error = SDL_GetError();
    SDL_Log("SDL: %s\n", error);

    ta_main_exit(1);
}

void ta_sdl_init(SDL_InitFlags flags) {
    // TODO: Make it log what subsystem
    ta_log("Initializing a SDL subsystem");
    bool success = SDL_Init(flags);
    if (!success) {
        ta_sdl_handle_error();
    }
}

void ta_sdl_shutdown(void) {
    ta_log("Exiting SDL");
    SDL_Quit();
}

SDL_Window *ta_sdl_create_window(const char *title, int width, int height) {
    SDL_WindowFlags flags = { 0 };

    ta_log("Initializing SDL window");
    SDL_Window *window = SDL_CreateWindow(title, width, height, flags);
    if (window) {
        return window;
    } else {
        ta_sdl_handle_error();
        return NULL;
    }
}

SDL_IOStream *ta_sdl_io_from_file(const char *file, const char *mode) {
    ta_log("Opening %s as %s", file, mode);

    SDL_IOStream *io = SDL_IOFromFile(file, mode);
    if (io) {
        return io;
    } else {
        ta_sdl_handle_error();
        return NULL;
    }
}

SDL_IOStream *ta_sdl_io_from_mem(void *mem, size_t size) {
    ta_log("Loading IO from memory");
    SDL_IOStream *io = SDL_IOFromMem(mem, size);
    if (io) {
        return io;
    } else {
        ta_sdl_handle_error();
        return NULL;
    }
}

void ta_sdl_get_window_size(SDL_Window *window, int *width, int *height) {
    bool success = SDL_GetWindowSize(window, width, height);
    if (!success) {
        ta_sdl_handle_error();
    }
}

SDL_GPUDevice *ta_sdl_create_gpu_device(void) {
    ta_log("Creating SDL_gpu device");
    SDL_GPUDevice *device = SDL_CreateGPUDevice(SDL_GPU_SHADERFORMAT_SPIRV, true, NULL);
    if (device) {
        return device;
    } else {
        ta_sdl_handle_error();
        return NULL;
    }
}

void ta_sdl_claim_window_for_gpu_device(SDL_GPUDevice *device, SDL_Window *window) {
    ta_log("Claiming SDL window for SDL_gpu device");
    bool success = SDL_ClaimWindowForGPUDevice(device, window);
    if (!success) {
        ta_sdl_handle_error();
    }
}

SDL_GPUShader *ta_sdl_create_gpu_shader(SDL_GPUDevice *device, const SDL_GPUShaderCreateInfo *createinfo) {
    ta_log("Creating a SDL_gpu shader");
    SDL_GPUShader *shader = SDL_CreateGPUShader(device, createinfo);
    if (shader) {
        return shader;
    } else {
        ta_sdl_handle_error();
        return NULL;
    }
}

SDL_GPUGraphicsPipeline *ta_sdl_create_gpu_graphics_pipeline(SDL_GPUDevice *device, const SDL_GPUGraphicsPipelineCreateInfo *createinfo) {
    ta_log("Creating a SDL_gpu graphics pipeline");
    SDL_GPUGraphicsPipeline *graphics_pipeline = SDL_CreateGPUGraphicsPipeline(device, createinfo);
    if (graphics_pipeline) {
        return graphics_pipeline;
    } else {
        ta_sdl_handle_error();
        return NULL;
    }
}

SDL_GPUTexture *ta_sdl_create_gpu_texture(SDL_GPUDevice *device, const SDL_GPUTextureCreateInfo *createinfo) {
    SDL_GPUTexture *texture = SDL_CreateGPUTexture(device, createinfo);
    if (texture) {
        return texture;
    } else {
        ta_sdl_handle_error();
        return NULL;
    }
}

SDL_GPUSampler *ta_sdl_create_gpu_sampler(SDL_GPUDevice *device, const SDL_GPUSamplerCreateInfo *createinfo) {
    SDL_GPUSampler *sampler = SDL_CreateGPUSampler(device, createinfo);
    if (sampler) {
        return sampler;
    } else {
        ta_sdl_handle_error();
        return NULL;
    }
}

SDL_GPUTransferBuffer *ta_sdl_create_gpu_transfer_buffer(SDL_GPUDevice *device, const SDL_GPUTransferBufferCreateInfo *createinfo) {
    SDL_GPUTransferBuffer *transfer_buffer = SDL_CreateGPUTransferBuffer(device, createinfo);
    if (transfer_buffer) {
        return transfer_buffer;
    } else {
        ta_sdl_handle_error();
        return NULL;
    }
}

void *ta_sdl_map_gpu_transfer_buffer(SDL_GPUDevice *device, SDL_GPUTransferBuffer *transfer_buffer, bool cycle) {
    void *mapped = SDL_MapGPUTransferBuffer(device, transfer_buffer, cycle);
    if (mapped) {
        return mapped;
    } else {
        ta_sdl_handle_error();
        return NULL;
    }
}

SDL_GPUCommandBuffer *ta_sdl_acquire_gpu_command_buffer(SDL_GPUDevice *device) {
    SDL_GPUCommandBuffer *command_buffer = SDL_AcquireGPUCommandBuffer(device);
    if (command_buffer) {
        return command_buffer;
    } else {
        ta_sdl_handle_error();
        return NULL;
    }
}

SDL_GPUCopyPass *ta_sdl_begin_gpu_copy_pass(SDL_GPUCommandBuffer *command_buffer) {
    SDL_GPUCopyPass *copy_pass = SDL_BeginGPUCopyPass(command_buffer);
    if (copy_pass) {
        return copy_pass;
    } else {
        ta_sdl_handle_error();
        return NULL;
    }
}

SDL_GPURenderPass *ta_sdl_begin_gpu_render_pass(SDL_GPUCommandBuffer *command_buffer, const SDL_GPUColorTargetInfo *color_target_infos, Uint32 num_color_targets, const SDL_GPUDepthStencilTargetInfo *depth_stencil_target_info) {
    SDL_GPURenderPass *render_pass = SDL_BeginGPURenderPass(command_buffer, color_target_infos, num_color_targets, depth_stencil_target_info);
    if (render_pass) {
        return render_pass;
    } else {
        ta_sdl_handle_error();
        return NULL;
    }
}

void ta_sdl_wait_and_acquire_gpu_swapchain_texture(SDL_GPUCommandBuffer *commandbuffer, SDL_Window *window, SDL_GPUTexture **swapchain_texture) {
    Uint32 *swapchain_texture_width  = NULL;
    Uint32 *swapchain_texture_height = NULL;
    
    bool success = SDL_WaitAndAcquireGPUSwapchainTexture(commandbuffer, window, swapchain_texture, swapchain_texture_width, swapchain_texture_height);
    if (!success) {
        ta_sdl_handle_error();
    }
}

void ta_sdl_submit_gpu_command_buffer(SDL_GPUCommandBuffer *command_buffer) {
    bool success = SDL_SubmitGPUCommandBuffer(command_buffer);
    if (!success) {
        ta_sdl_handle_error();
    }
}

SDL_Surface *ta_sdl_convert_surface(SDL_Surface *surface, SDL_PixelFormat format) {
    SDL_Surface *converted_surface = SDL_ConvertSurface(surface, format);
    if (converted_surface) {
        return converted_surface;
    } else {
        ta_sdl_handle_error();
        return NULL;
    }
}

void ta_sdl_set_window_fullscreen(SDL_Window *window, bool fullscreen) {
    bool success = SDL_SetWindowFullscreen(window, fullscreen);
    if (!success) {
        ta_sdl_handle_error();
    }
}