#include "kubo_context.h"

struct kubo_context *kubo_context_init() {
    struct kubo_context *context = malloc(sizeof(struct kubo_context));

    context->num_walls_alloc = KUBO_CONTEXT_NUM_WALLS_ALLOC;
    context->walls =
        malloc(sizeof(struct kubo_wall) * context->num_walls_alloc);

    return context;
}

void kubo_context_cleanup(struct kubo_context *context) {
    free(context->walls);
    free(context);
}

bool kubo_context_add_wall(struct kubo_context *context,
                           struct kubo_wall *wall) {

    struct kubo_wall **new_walls;

    if (context->num_walls == context->num_walls_alloc - 1) {

        context->num_walls_alloc *= 2;

        new_walls = realloc(context->walls, sizeof(struct kubo_wall *) *
                                                context->num_walls_alloc);

        if (!new_walls)
            return false;

        context->walls = new_walls;
    }

    context->walls[context->num_walls++] = wall;

    return true;
}

struct kubo_wall *kubo_context_get_pending_wall(struct kubo_context *context) {

    if (context->num_walls > 0 &&
        (context->walls[context->num_walls - 1]->wall_state == KUBO_WALL_INIT ||
         context->walls[context->num_walls - 1]->wall_state ==
             KUBO_WALL_STARTED)) {
        return context->walls[context->num_walls - 1];
    }

    struct kubo_wall *wall = kubo_wall_init();
    kubo_context_add_wall(context, wall);

    return wall;
}