#pragma once

#if __cplusplus
extern "C" {
#endif

#include "../base/base.h"
#include "hash.h"
#include "KeyValuePair.h"

typedef struct Hashtable{
    uint8 hein;  // height=HT_HEIGHTS[hein] 
    Autoarr(KVPair)** rows; // Autoarr[height]
} Hashtable;

Hashtable* Hashtable_create();
void Hashtable_free(Hashtable* ht);

// amount of rows
uint16 Hashtable_height(Hashtable* ht);

// adds charptr and value to new KVPair
// use cptr_copy() to create new string if needed
#define KVPair(key,value) (KVPair){key,value}

// 
// don't add pairs with the same keys,
// or something weird will happen
// 
void Hashtable_add_pair(Hashtable* ht, KVPair p);
void Hashtable_add(Hashtable* ht, char* key, Unitype u);

// returns null or pointer to value in hashtable
Unitype* Hashtable_getptr(Hashtable* ht, char* key);

Unitype Hashtable_get(Hashtable* ht, char* key);
KVPair Hashtable_get_pair(Hashtable* ht, char* key);
bool Hashtable_try_get(Hashtable* ht, char* key, Unitype* output);

// not implemented yet
void Hashtable_set_pair(Hashtable* ht, KVPair p);
void Hashtable_set(Hashtable* ht, char* key, Unitype u);

#define Hashtable_foreach(HT, EL, codeblock)({\
    uint16 hmax=Hashtable_height(HT);\
    for(uint16 h=0; h<hmax; h++){\
        Autoarr(KVPair)* AR=HT->rows[h];\
        Autoarr_foreach(AR, EL, codeblock);\
    }\
})

#if __cplusplus
}
#endif