#ifndef VECTOR_H
#define VECTOR_H

#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>

#ifndef DEBUG
#	define DEBUG 0
#endif
#define ERR_MEM_ALLOC 1
#define NO_COLOR      "\x1b[0m"
#define RED           "\x1b[31m"
#define GREEN         "\x1b[32m"
#define BROWN         "\x1b[33m"
#define BLUE          "\x1b[34m"
#define MAGENTA       "\x1b[35m"
#define CYAN          "\x1b[36m"
#define GRAY          "\x1b[37m"

#define UNINPLEMENTED    printf("%s:%d: Not yet implemented", __FILE__, __LINE__)
#define NONNULL          __attribute__((nonnull))
#define INITIAL_CAPACITY 4
#define PCOMMON(color, format, ...)                                            \
	fprintf(stderr,                                                              \
	        "%s%s:%d%s\t" format "\n",                                           \
	        color,                                                               \
	        __FILE__,                                                            \
	        __LINE__,                                                            \
	        NO_COLOR,                                                            \
	        __VA_ARGS__)
#define PDEB(format, ...) PCOMMON(GREEN, format, __VA_ARGS__)
#define PERR(format, ...) PCOMMON(RED, format, __VA_ARGS__)

/* Destructor typedef */
typedef void (*Destructor)(void *element);

typedef struct Vector_s {
	size_t       length;
	size_t       capacity;
	const size_t offset;
	void **      elements;
	Destructor   destroy;
} Vector;

typedef struct Result_s {
	union {
		const char *message;
		void *      value;
	} result;
	bool error;
} Result;

Result vec_new(Destructor destructor);
Result vec_with_capacity(Destructor const destructor, size_t const capacity);
Result vec_push(Vector *const self, void *const element) NONNULL;
Result vec_shrink_to_fit(Vector *const self) NONNULL;
void * vec_safe_at(Vector const *const self, size_t const index) NONNULL;
void * vec_at(Vector const *const self, size_t const index) NONNULL;
void * vec_last(Vector const *const self) NONNULL;
void   vec_pop(Vector *const self) NONNULL;
void   vec_delete(Vector *const self) NONNULL;
size_t vec_length(Vector const *const self) NONNULL;
size_t vec_capacity(Vector const *const self) NONNULL;

#endif /* VECTOR_H */