#include <voxula/internals/ecs/head.h>
#include <voxula/internals/ecs/tag.h>
#include <stdlib.h>
#include <string.h>

vecs_tag_name_resolver_s vecs_create_tag_name_resolver(vx_uuid_table_s *uuid_table)
{
    vecs_tag_name_resolver_s resolver;
    resolver.names_capacity = 1024;
    resolver.num_names = 0;
    resolver.names = malloc(resolver.names_capacity * sizeof(vecs_tag_name_s));
    resolver.string_arena = vx_new_arena(16384);
    resolver.uuid_table = uuid_table;
    return resolver;
}

void vecs_delete_tag_name_resolver(vecs_tag_name_resolver_s *resolver)
{
    vx_free_arena(resolver->string_arena);
    free(resolver->names);
}

vecs_tag_name_s * vecs_force_create_tag_name(vecs_tag_name_resolver_s *resolver, const char *name)
{
    uint32_t len_name = strlen(name);
    vecs_tag_name_s *tag_name = &resolver->names[resolver->num_names];
    ++resolver->num_names;
    tag_name->length = len_name;
    tag_name->string = vx_arena_dupe_string(resolver->string_arena, name);
    tag_name->uuid = vx_new_uuid(resolver->uuid_table);
    tag_name->first_user = NULL;
    return tag_name;
}

vecs_tag_name_s * vecs_make_tag_name(vecs_tag_name_resolver_s *resolver, const char *name)
{
    vecs_tag_name_s *tag_name = vecs_search_tag_name(resolver, name);
    if(tag_name)
    {
        return tag_name;
    }
    return vecs_force_create_tag_name(resolver, name);
}

vecs_tag_name_s * vecs_search_tag_name(vecs_tag_name_resolver_s *resolver, const char *string)
{
    uint32_t len_string = strlen(string);
    uint32_t name_index = 0;
    while(name_index < resolver->num_names)
    {
        vecs_tag_name_s *name = &resolver->names[name_index];
        if(name->length != len_string)
        {
            ++name_index;
            continue;
        }
        if( ! memcmp(name->string, string, name->length))
        {
            return name;
        }
        ++name_index;
    }
    return NULL;
}