#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "vars.h"

/**
 * Version: 0.2
 * 
 * adds var to hashmap if its not already set
 * else it will update the var with provided values.
 * @return null
 * @param string for var name
 * 
 */
void add_var(char *p_name, variable_values *p_values, map_void_t* p_var_map) 
{
    //if variable map is null
    if(!p_var_map)
    {
        p_var_map = malloc(sizeof(map_void_t));
        map_init(&*((map_void_t *) p_var_map));
    }
    map_set(&*((map_void_t* ) p_var_map), p_name, &*p_values);
}

/**
 * returns variables values from hashmap
 * 
 * @see [variable_values]
 * @see [char *string]
 * @return [variable_values] containing variables data
 * @param [char *string] Variable name.
 * 
 */
variable_values *get_value(char *p_name, map_void_t* p_var_map) 
{
    return *map_get(&*((map_void_t* ) p_var_map), p_name);
}

/**
 * 
 * This makes an integer varible and adds it to the linked list of
 * vars.
 * @return the head of the linked list which just points to all of the vars
 * 
 */
variable* make_variable_int(char *p_name, int value) 
{    
    variable *p = malloc(sizeof(variable));
    variable_values *int_value = malloc(sizeof(variable_values));
    int_value->type = VAR_INT;
    int_value->_int = value;
    p->name = p_name;
    p->value = int_value;
    return p;
}


/**
 * makes a variable of type double.
 * @param name of the varible.
 * @param double data to be stored in the variable.
 */
variable* make_variable_double(char *p_name, double value) 
{    
    variable *new_var = malloc(sizeof(variable));
    variable_values *double_value = malloc(sizeof(variable_values));
    double_value->type = VAR_DOUBLE;
    double_value->_double = value;
    new_var->name = p_name;
    new_var->value = double_value;
    return new_var;
}

/**
 * makes a char variable.
 * 
 * @param name of the variable.
 * @param char value to be stored.
 */
variable* make_variable_char(char *p_name, char value) 
{    
    variable *p = malloc(sizeof(variable));
    variable_values *char_value = malloc(sizeof(variable_values));
    char_value->type = VAR_CHAR;
    char_value->_char = value;
    p->name = p_name;
    p->value = char_value;
    return p;   
}

/**
 * makes a variable of type string.
 * 
 * @param name of the variable.
 * @param value to be stored.
 */
variable* make_variable_string(char *p_name, char *value) 
{    
    variable *p = malloc(sizeof(variable));
    variable_values *string_value = malloc(sizeof(variable_values));
    string_value->type = VAR_STRING;
    string_value->_string = value;
    p->name = p_name;
    p->value = string_value;
    return p;
}