#include "app.h"
#include "app_ressources.h"
#include <SDL2/SDL.h>
#include <SDL2/SDL_blendmode.h>
#include <SDL2/SDL_error.h>
#include <SDL2/SDL_pixels.h>
#include <SDL2/SDL_render.h>
#include <SDL2/SDL_stdinc.h>
#include <SDL2/SDL_surface.h>
#include <SDL2/SDL_ttf.h>
#include <SDL2/SDL_video.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>

const Theme defaultTheme = {
    .foreground = { 0xfb, 0xf1, 0xc7, 0xff },
    .background = { 0x28, 0x28, 0x28, 0xff },
    .linenumber = { 0x7c, 0x6f, 0x64, 0xff },
};

TextSize text_size(const char* text, void* font)
{
    int w, h;
    TTF_SizeText(font, text, &w, &h);
    return (TextSize) { w, h };
}

void render_text(
    SDL_Renderer* renderer, const char* text, TTF_Font* font, int x, int y,
    SDL_Color fg, SDL_Color bg)
{

    SDL_Surface* surface = TTF_RenderUTF8_Shaded(font, text, fg, bg);

    SDL_Texture* texture = SDL_CreateTextureFromSurface(renderer, surface);

    TextSize size = text_size(text, font);
    SDL_RenderCopy(
        renderer,
        texture,
        nullptr,
        &(SDL_Rect) { x, y, size.width, size.height });

    SDL_DestroyTexture(texture);
    SDL_FreeSurface(surface);
}

int main(int argc, char** argv)
{
    App app_instance;
    App* app = &app_instance;
    app_init(app);

    for (int i = 1; i < argc; ++i) {
        app_open_file(app, argv[i]);
    }
    app_prepare(app);

    SDL_Init(SDL_INIT_VIDEO);
    TTF_Init();

    app_ressources_load(app);

    SDL_Window* window = SDL_CreateWindow(
        "fed",
        SDL_WINDOWPOS_CENTERED,
        SDL_WINDOWPOS_CENTERED,
        1000,
        1000,
        SDL_WINDOW_RESIZABLE);

    SDL_Renderer* renderer = SDL_CreateRenderer(window, 0, 0);
    // SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_ADD);

    uint64_t before = SDL_GetTicks64();

    while (true) {
        uint64_t now = SDL_GetTicks64();
        uint64_t delta = now - before;
        (void)delta;

        SDL_Event event;
        while (SDL_PollEvent(&event)) {
            switch (event.type) {
                case SDL_QUIT:
                    goto exit_game;
                case SDL_KEYDOWN: {
                    switch (event.key.keysym.sym) {
                        case SDLK_ESCAPE:
                            goto exit_game;
                    }
                }
                default:
                    app_handle_keydown(app, event.key.keysym.sym);
            }
        }

        SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0);
        SDL_RenderClear(renderer);

        app_render(app, renderer);

        SDL_RenderPresent(renderer);
        SDL_Delay(16);

        before = now;
    }

exit_game:;
    printf("exitting...\n");

    app_ressources_unload(app);

    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);

    TTF_Quit();
    SDL_Quit();

    app_deinit(app);
}