#include "game.h"

#include <time.h>
#include "display.h"
#include "asset_manager.h"
#include "ecs.h"
#include "components.h"

#include <SDL2/SDL_timer.h>

int game_init(void)
{
    game.is_running = false;

    if(display_init()) return EXIT_FAILURE;

    if(asset_manager_init(&game.asset_manager)) return EXIT_FAILURE;
    entity_manager_init(&game.entity_manager);

    entity_t *player = create_entity(0);

    entity_manager_add_entity(&game.entity_manager, player);

    frect_t player_bounds = {10.0f, 10.0f, 32.0f, 32.0f};

    if(asset_manager_load_asset(&game.asset_manager, "player_idle_sheet", ASSET_TEXTURE)) return EXIT_FAILURE;
    if(asset_manager_load_asset(&game.asset_manager, "player_walk_sheet", ASSET_TEXTURE)) return EXIT_FAILURE;

    component_t *component = create_component(TRANSFORM_COMPONENT); if(!component) return EXIT_FAILURE;
    add_component(player, component, player_bounds, PLAYER_DEFAULT_SPEED);

    component = create_component(SPRITE_COMPONENT);                 if(!component) return EXIT_FAILURE;
    add_component(player, component, "player_idle_sheet");

    component = create_component(ANIMATION_SYSTEM);                 if(!component) return EXIT_FAILURE;
    add_component(player, component, 4, 0, PLAYER_DEFAULT_IDLE_ANIMATION_SPEED, true, true, false);

    component = create_component(PLAYER_SYSTEM);                    if(!component) return EXIT_FAILURE;
    add_component(player, component);

    game.is_running = true;

    return EXIT_SUCCESS;
}

void game_handle_event(void)
{
    event_t event;

    while(pollevent(&event))
    {
        if(event.type == EVENT_KEY_DOWN)
            game.events.keys[event.key] = true;
        else if(event.type == EVENT_KEY_UP)
            game.events.keys[event.key] = false;

        if(event.type == EVENT_QUIT)
            game.is_running = false;
    }
}

void game_update(void)
{
    entity_manager_update(&game.entity_manager);
}

int game_render(void)
{
    if(display_clear())
    {
        game.is_running = false;
        return EXIT_FAILURE;
    }

    if(entity_manager_draw(&game.entity_manager))
    {
        game.is_running = false;
        return EXIT_FAILURE;
    }


    display_update();

    return EXIT_SUCCESS;
}

int game_exit(void)
{
    if(asset_manager_let_go_asset(&game.asset_manager, "player_idle_sheet")) return EXIT_FAILURE;
    if(asset_manager_let_go_asset(&game.asset_manager, "player_walk_sheet")) return EXIT_FAILURE;

    entity_manager_exit(&game.entity_manager);
    if(asset_manager_exit(&game.asset_manager)) return EXIT_FAILURE;

    display_exit();

    return EXIT_SUCCESS;
}