#include "outbox_envelope.h"

#include "json/layout.h"
#include "ffdb/fs_list.h"

#include <stdlib.h>
#include <stdio.h>
#include <stddef.h>
#include <string.h>

static struct json_object_field layout[] = {
	{ "account",	offsetof( struct outbox_envelope, account_id ),		true,  &json_field_integer },
	{ "activity",	offsetof( struct outbox_envelope, activity_id ),		true,  &json_field_integer },
	{ NULL },
};

struct outbox_envelope* outbox_envelope_new()
{
	struct outbox_envelope* env;

	env = malloc(sizeof(*env));
	if( !env ) { return NULL; }
	memset(env,0,sizeof(*env));
}
void outbox_envelope_free( struct outbox_envelope* env )
{
	free(env);
}

void outbox_envelope_save( struct outbox_envelope* env )
{
	int id = fs_list_get( "data/outbox/HEAD" ) + 1;
	fs_list_set( "data/outbox/HEAD", id );

	char filename[512];
	snprintf( filename, sizeof(filename), "data/outbox/%d.json", id );

	json_write_object_layout_to_file( filename, "\t", layout, env );
}

struct outbox_envelope* outbox_envelope_load_next()
{
	struct outbox_envelope* env;

	if( !( env = outbox_envelope_new()) ) { return NULL; }

	int id = fs_list_get( "data/outbox/TAIL" ) + 1;
	env->id = id;

	char filename[512];
	snprintf( filename, sizeof(filename), "data/outbox/%d.json", id );

	if( !json_read_object_layout_from_file( filename, layout, env ) ) {
		outbox_envelope_free( env );
		return NULL;
	}

	return env;
}

void outbox_envelope_delete( struct outbox_envelope* env )
{
	char filename[512];
	snprintf( filename, sizeof(filename), "data/outbox/%d.json", env->id );

	remove(filename);

	outbox_envelope_free(env);
}