#ifndef SIM_CLIENT_H
#define SIM_CLIENT_H

struct client_handle {
    b32 valid;
    u32 idx;
    u32 gen;
};

struct sim_client {
    b32 valid;
    struct client_handle handle;

    struct host_channel_id channel_id;
    u64 channel_hash;

    struct sim_client *next_free;
    struct sim_client *next_hash;
    struct sim_client *prev_hash;

    struct sim_ent_handle ent;
};

struct channel_lookup_bucket {
    struct sim_client *first;
    struct sim_client *last;
};

struct sim_client_store {
    b32 valid;
    struct arena arena;

    struct channel_lookup_bucket *channel_lookup_buckets;
    u64 num_channel_lookup_buckets;

    struct sim_client *clients;
    struct sim_client *first_free_client;
    u64 clients_reserved;
};

INLINE struct sim_client *client_nil(void)
{
    extern READONLY struct sim_client _g_sim_client_nil;
    return &_g_sim_client_nil;
}

INLINE struct sim_client_store *client_store_nil(void)
{
    extern READONLY struct sim_client_store _g_sim_client_store_nil;
    return &_g_sim_client_store_nil;
}

struct sim_client_store *client_store_alloc(void);
void client_store_release(struct sim_client_store *store);
struct sim_client_store *client_store_from_client(struct sim_client *client);
struct sim_client *client_from_handle(struct sim_client_store *store, struct client_handle handle);
struct sim_client *client_from_channel_id(struct sim_client_store *store, struct host_channel_id channel_id);
struct sim_client *client_alloc(struct sim_client_store *store, struct host_channel_id channel_id);
void client_release(struct sim_client *client);

#endif