#include "tilemap.h"
#include <ecs/ge_render_component.h>
#include <ecs/ge_collision_component.h>

static ge_render_component_t* tilemap_render[TILEMAP_Y_HEIGHT][TILEMAP_X_WIDTH];
static ge_layers_t tilemap_layers[TILEMAP_Y_HEIGHT][TILEMAP_X_WIDTH];
static int real_map[TILEMAP_Y_HEIGHT][TILEMAP_X_WIDTH] = {
    {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}, // 第0行: 顶部边界
    {2,0,0,1,1,0,0,0,0,0,0,1,1,0,0,2}, // 第1行: 敌方出生点预留
    {2,0,0,1,1,0,0,0,0,0,0,1,1,0,0,2}, // 第2行
    {2,0,0,0,0,0,0,1,1,0,0,0,0,0,0,2},
    {2,0,0,0,0,0,0,1,1,0,0,0,0,0,0,2},
    {2,0,1,1,0,0,0,0,0,0,0,0,1,1,0,2},
    {2,0,1,1,0,0,0,0,0,0,0,0,1,1,0,2},
    {2,0,0,0,0,0,1,1,1,1,0,0,0,0,0,2}, // 中央障碍
    {2,0,0,0,0,0,1,0,0,1,0,0,0,0,0,2}, // 中央基地区域
    {2,0,1,1,0,0,1,0,0,1,0,0,1,1,0,2},
    {2,0,1,1,0,0,0,0,0,0,0,0,1,1,0,2},
    {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2},
    {2,0,0,1,1,0,0,0,0,0,0,1,1,0,0,2}, // 第12行: 玩家出生点预留
    {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2}, // 第13行: 底部边界
};

static inline void fill_render(void) {
    // FIXME you can using ecs to store the entity
    static ge_render_component_t render_wall = {
        .type = GE_RENDER_COMP_TYPE_RECT,
        .data.rect.size.x = TILEMAP_SIZE,
        .data.rect.size.y = TILEMAP_SIZE,
        .data.rect.color = GE_COLOR_GRAY,
    };
    for (int y = 0; y < TILEMAP_Y_HEIGHT; y++) {
        for (int x = 0; x < TILEMAP_X_WIDTH; x++) {
            if (real_map[y][x] == 0) {
                continue;
            }
            tilemap_render[y][x] = &render_wall;
            tilemap_layers[y][x] = LAYER_WALL;
            /**
             * the global variable default value is NULL
             * tilemap_render[y][x] = NULL;
             */
        }
    }
}

void init_tilemap(ge_ecs_t* ecs, ge_entity_t **_tilemap) {
    Assert(ecs != NULL && _tilemap != NULL);
    ge_ecs_add_entity(ecs, _tilemap);
    ge_entity_t* tilemap = *_tilemap;
    Assert(tilemap != NULL);

    tilemap->component_mask = (
        GE_COMPONENT_ACVIVE |
        GE_COMPONENT_POSITION |
        GE_COMPONENT_RENDERABLE |
        GE_COMPONENT_COLLIDER
    );
    /**
     * y = 16
     */
    tilemap->position = (ge_vector2i_t) {.x = 0, .y = 16};
    tilemap->renderable = (ge_render_component_t) {
        .type = GE_RENDER_COMP_TYPE_TILEMAP,
        .data.tilemap.tile_size = TILEMAP_SIZE,
        .data.tilemap.map_size.x = TILEMAP_X_WIDTH,
        .data.tilemap.map_size.y = TILEMAP_Y_HEIGHT,
        .data.tilemap.components = (ge_render_component_t**)tilemap_render,
    };
    tilemap->collision = (ge_collision_component_t) {
        .type = GE_COLLISION_COMP_TYPE_TILEMAP,
        .layers = LAYER_WALL,
        .collider.tilemap = {
            .tile_size = TILEMAP_SIZE,
            .map_size = { TILEMAP_X_WIDTH, TILEMAP_Y_HEIGHT },
            .layers = (ge_layers_t*)tilemap_layers,
        },
    };

    fill_render();
}