#include "timeline.h"

#include "json/json.h"
#include "json/layout.h"
#include "ffdb/trie.h"
#include "util/format.h"

#include "model/status.h"

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

struct timeline* timeline_from_id( int id )
{
	struct timeline* tl;
	tl = malloc(sizeof(*tl));
	memset(tl,0,sizeof(*tl));
	tl->id = id;

	return tl;
}
struct timeline* timeline_new()
{
	struct timeline* tl;
	tl = malloc(sizeof(*tl));
	memset(tl,0,sizeof(*tl));
	return tl;
}
void timeline_free( struct timeline* tl )
{
	if( !tl ) { return; }

	free(tl);
}

int timeline_load_statuses( struct timeline* tl, int offset_from_head, int count, struct status** result )
{
	struct {
		char** items;
		int count;
	} values;
	memset(&values,0,sizeof(values));

	char filename[512];
	snprintf( filename, sizeof(filename), "data/accounts/%d/timeline", tl->id );

	ffdb_trie_list( filename, offset_from_head, count, NULL, &values );
	int result_count = 0;
	for( int i = 0; i < values.count && result_count < count; ++i ) {
		char* id_str = values.items[i];
		struct status* s = status_from_id( atoi(id_str) );
		free( id_str );

		if( s ) {
			result[result_count] = s;
			result_count += 1;
		}
	}
	free(values.items);
	return result_count;
}
static void key_for_post( struct status* s, char* key, int sizeof_key )
{
	struct tm gmtime_data;
	gmtime_r( &s->published, &gmtime_data );
	snprintf( key, sizeof_key, "%04d-%02d-%02dT%02d:%02d:%02dZ",
		gmtime_data.tm_year + 1900,
		gmtime_data.tm_mon + 1,
		gmtime_data.tm_mday,
		gmtime_data.tm_hour,
		gmtime_data.tm_min,
		gmtime_data.tm_sec
	);
}
void timeline_add_post( struct timeline* tl, struct status* s )
{
	char filename[512];
	snprintf( filename, sizeof(filename), "data/accounts/%d/timeline", tl->id );

	char key[512];
	key_for_post(s,key,sizeof(key));

	char value[32];
	ffdb_trie_set( filename, key, format( value, sizeof(value), "%d", s->id ) );
}
void timeline_remove_post( struct timeline* tl, struct status* s )
{
	char filename[512];
	snprintf( filename, sizeof(filename), "data/accounts/%d/timeline", tl->id );

	char key[512];
	key_for_post(s,key,sizeof(key));

	ffdb_trie_remove( filename, key );
}