/*
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 * This library is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library. If not, see <http://www.gnu.org/licenses/>.
 *
 * Authors: Sankar P <psankar@novell.com>
 *          Srinivasa Ragavan <sragavan@novell.com>
 */

#if !defined (__CAMEL_H_INSIDE__) && !defined (CAMEL_COMPILATION)
#error "Only <camel/camel.h> can be included directly."
#endif

#ifndef CAMEL_DB_H
#define CAMEL_DB_H

#include <sqlite3.h>
#include <glib.h>

G_BEGIN_DECLS

/**
 * CAMEL_DB_FILE:
 *
 * Since: 2.24
 **/
#define CAMEL_DB_FILE "folders.db"

/* Hopefully no one will create a folder named EVO_IN_meM_hAnDlE */

/**
 * CAMEL_DB_IN_MEMORY_TABLE:
 *
 * Since: 2.26
 **/
#define CAMEL_DB_IN_MEMORY_TABLE "EVO_IN_meM_hAnDlE.temp"

/**
 * CAMEL_DB_IN_MEMORY_DB:
 *
 * Since: 2.26
 **/
#define CAMEL_DB_IN_MEMORY_DB "EVO_IN_meM_hAnDlE"

/**
 * CAMEL_DB_IN_MEMORY_TABLE_LIMIT:
 *
 * Since: 2.26
 **/
#define CAMEL_DB_IN_MEMORY_TABLE_LIMIT 100000

typedef struct _CamelDBPrivate CamelDBPrivate;

/**
 * CamelDBCollate:
 *
 * Since: 2.24
 **/
typedef gint (*CamelDBCollate)(gpointer, gint, gconstpointer, gint, gconstpointer );

/**
 * CamelDB:
 *
 * Since: 2.24
 **/
struct _CamelDB {
	sqlite3 *db;
	/* this lock has been replaced with a rw lock which sits inside priv. 
	 * This is currently unused. Keeping it, not to break the ABI */
	GMutex *lock;
	CamelDBPrivate *priv;
};

/**
 * CAMEL_DB_FREE_CACHE_SIZE:
 *
 * Since: 2.24
 **/
#define CAMEL_DB_FREE_CACHE_SIZE 2 * 1024 * 1024

/**
 * CAMEL_DB_SLEEP_INTERVAL:
 *
 * Since: 2.24
 **/
#define CAMEL_DB_SLEEP_INTERVAL 1*10*10

/**
 * CAMEL_DB_RELEASE_SQLITE_MEMORY:
 *
 * Since: 2.24
 **/
#define CAMEL_DB_RELEASE_SQLITE_MEMORY if(!g_getenv("CAMEL_SQLITE_FREE_CACHE")) sqlite3_release_memory(CAMEL_DB_FREE_CACHE_SIZE);

/**
 * CAMEL_DB_USE_SHARED_CACHE:
 *
 * Since: 2.24
 **/
#define CAMEL_DB_USE_SHARED_CACHE if(g_getenv("CAMEL_SQLITE_SHARED_CACHE")) sqlite3_enable_shared_cache(TRUE);

/**
 * CamelMIRecord:
 * @uid:
 *	Message UID
 * @flags:
 *	Camel Message info flags
 * @msg_type:
 * @dirty:
 * @read:
 *	boolean read status
 * @deleted:
 *	boolean deleted status
 * @replied:
 *	boolean replied status
 * @important:
 *	boolean important status
 * @junk:
 *	boolean junk status
 * @attachment:
 *	boolean attachment status
 * @size:
 *	size of the mail
 * @dsent:
 *	date sent
 * @dreceived:
 *	date received
 * @subject:
 *	subject of the mail
 * @from:
 *	sender
 * @to:
 *	recipient
 * @cc:
 *	CC members
 * @mlist:
 *	message list headers
 * @followup_flag:
 *	followup flag / also can be queried to see for followup or not
 * @followup_completed_on:
 *	completed date, can be used to see if completed
 * @followup_due_by:
 *	to see the due by date
 * @part:
 *	part / references / thread id
 * @labels:
 *	labels of mails also called as userflags
 * @usertags:
 *	composite string of user tags
 * @cinfo:
 *	content info string - composite string
 * @bdata:
 *	provider specific data
 * @bodystructure:
 *
 * The extensive DB format, supporting basic searching and sorting.
 *
 * Since: 2.24
 **/
typedef struct _CamelMIRecord {
	gchar *uid;
	guint32 flags;
	guint32 msg_type;
	guint32 dirty;
	gboolean read;
	gboolean deleted;
	gboolean replied;
	gboolean important;
	gboolean junk;
	gboolean attachment;
	guint32 size;
	time_t dsent;
	time_t dreceived;
	gchar *subject;
	gchar *from;
	gchar *to;
	gchar *cc;
	gchar *mlist;
	gchar *followup_flag;
	gchar *followup_completed_on;
	gchar *followup_due_by;
	gchar *part;
	gchar *labels;
	gchar *usertags;
	gchar *cinfo;
	gchar *bdata;
	gchar *bodystructure;
} CamelMIRecord;

/**
 * CamelFIRecord:
 *
 * Since: 2.24
 **/
typedef struct _CamelFIRecord {
	gchar *folder_name;
	guint32 version;
	guint32 flags;
	guint32 nextuid;
	time_t time;
	guint32 saved_count;
	guint32 unread_count;
	guint32 deleted_count;
	guint32 junk_count;
	guint32 visible_count;
	guint32 jnd_count;  /* Junked not deleted */
	gchar *bdata;
} CamelFIRecord;

typedef struct _CamelDB CamelDB;

/**
 * CamelDBKnownColumnNames:
 *
 * Since: 3.4
 **/
typedef enum {
	CAMEL_DB_COLUMN_UNKNOWN = -1,
	CAMEL_DB_COLUMN_ATTACHMENT,
	CAMEL_DB_COLUMN_BDATA,
	CAMEL_DB_COLUMN_BODYSTRUCTURE,
	CAMEL_DB_COLUMN_CINFO,
	CAMEL_DB_COLUMN_DELETED,
	CAMEL_DB_COLUMN_DELETED_COUNT,
	CAMEL_DB_COLUMN_DRECEIVED,
	CAMEL_DB_COLUMN_DSENT,
	CAMEL_DB_COLUMN_FLAGS,
	CAMEL_DB_COLUMN_FOLDER_NAME,
	CAMEL_DB_COLUMN_FOLLOWUP_COMPLETED_ON,
	CAMEL_DB_COLUMN_FOLLOWUP_DUE_BY,
	CAMEL_DB_COLUMN_FOLLOWUP_FLAG,
	CAMEL_DB_COLUMN_IMPORTANT,
	CAMEL_DB_COLUMN_JND_COUNT,
	CAMEL_DB_COLUMN_JUNK,
	CAMEL_DB_COLUMN_JUNK_COUNT,
	CAMEL_DB_COLUMN_LABELS,
	CAMEL_DB_COLUMN_MAIL_CC,
	CAMEL_DB_COLUMN_MAIL_FROM,
	CAMEL_DB_COLUMN_MAIL_TO,
	CAMEL_DB_COLUMN_MLIST,
	CAMEL_DB_COLUMN_NEXTUID,
	CAMEL_DB_COLUMN_PART,
	CAMEL_DB_COLUMN_PREVIEW,
	CAMEL_DB_COLUMN_READ,
	CAMEL_DB_COLUMN_REPLIED,
	CAMEL_DB_COLUMN_SAVED_COUNT,
	CAMEL_DB_COLUMN_SIZE,
	CAMEL_DB_COLUMN_SUBJECT,
	CAMEL_DB_COLUMN_TIME,
	CAMEL_DB_COLUMN_UID,
	CAMEL_DB_COLUMN_UNREAD_COUNT,
	CAMEL_DB_COLUMN_USERTAGS,
	CAMEL_DB_COLUMN_VERSION,
	CAMEL_DB_COLUMN_VISIBLE_COUNT,
	CAMEL_DB_COLUMN_VUID
} CamelDBKnownColumnNames;

CamelDBKnownColumnNames camel_db_get_column_ident (GHashTable **hash, gint index, gint ncols, gchar **col_names);

/**
 * CamelDBSelectCB:
 *
 * Since: 2.24
 **/
typedef gint (*CamelDBSelectCB) (gpointer data, gint ncol, gchar **colvalues, gchar **colnames);

CamelDB * camel_db_open (const gchar *path, GError **error);
CamelDB * camel_db_clone (CamelDB *cdb, GError **error);
void camel_db_close (CamelDB *cdb);
gint camel_db_command (CamelDB *cdb, const gchar *stmt, GError **error);

gint camel_db_transaction_command (CamelDB *cdb, GList *qry_list, GError **error);

gint camel_db_begin_transaction (CamelDB *cdb, GError **error);
gint camel_db_add_to_transaction (CamelDB *cdb, const gchar *query, GError **error);
gint camel_db_end_transaction (CamelDB *cdb, GError **error);
gint camel_db_abort_transaction (CamelDB *cdb, GError **error);
gint camel_db_clear_folder_summary (CamelDB *cdb, const gchar *folder, GError **error);
gint camel_db_rename_folder (CamelDB *cdb, const gchar *old_folder, const gchar *new_folder, GError **error);

gint camel_db_delete_folder (CamelDB *cdb, const gchar *folder, GError **error);
gint camel_db_delete_uid (CamelDB *cdb, const gchar *folder, const gchar *uid, GError **error);
/*int camel_db_delete_uids (CamelDB *cdb, GError **error, gint nargs, ... );*/
gint camel_db_delete_uids (CamelDB *cdb, const gchar * folder_name, GList *uids, GError **error);

gint camel_db_create_folders_table (CamelDB *cdb, GError **error);
gint camel_db_select (CamelDB *cdb, const gchar * stmt, CamelDBSelectCB callback, gpointer data, GError **error);

gint camel_db_write_folder_info_record (CamelDB *cdb, CamelFIRecord *record, GError **error);
gint camel_db_read_folder_info_record (CamelDB *cdb, const gchar *folder_name, CamelFIRecord *record, GError **error);

gint camel_db_prepare_message_info_table (CamelDB *cdb, const gchar *folder_name, GError **error);

gint camel_db_write_message_info_record (CamelDB *cdb, const gchar *folder_name, CamelMIRecord *record, GError **error);
gint camel_db_write_fresh_message_info_record (CamelDB *cdb, const gchar *folder_name, CamelMIRecord *record, GError **error);
gint camel_db_read_message_info_records (CamelDB *cdb, const gchar *folder_name, gpointer p, CamelDBSelectCB read_mir_callback, GError **error);
gint camel_db_read_message_info_record_with_uid (CamelDB *cdb, const gchar *folder_name, const gchar *uid, gpointer p, CamelDBSelectCB read_mir_callback, GError **error);

gint camel_db_count_junk_message_info (CamelDB *cdb, const gchar *table_name, guint32 *count, GError **error);
gint camel_db_count_unread_message_info (CamelDB *cdb, const gchar *table_name, guint32 *count, GError **error);
gint camel_db_count_deleted_message_info (CamelDB *cdb, const gchar *table_name, guint32 *count, GError **error);
gint camel_db_count_total_message_info (CamelDB *cdb, const gchar *table_name, guint32 *count, GError **error);

gint camel_db_count_visible_message_info (CamelDB *cdb, const gchar *table_name, guint32 *count, GError **error);
gint camel_db_count_visible_unread_message_info (CamelDB *cdb, const gchar *table_name, guint32 *count, GError **error);

gint camel_db_count_junk_not_deleted_message_info (CamelDB *cdb, const gchar *table_name, guint32 *count, GError **error);
gint camel_db_count_message_info (CamelDB *cdb, const gchar *query, guint32 *count, GError **error);
void camel_db_camel_mir_free (CamelMIRecord *record);

gint camel_db_get_folder_uids (CamelDB *db, const gchar *folder_name, const gchar *sort_by, const gchar *collate, GHashTable *hash, GError **error);

GPtrArray * camel_db_get_folder_junk_uids (CamelDB *db, gchar *folder_name, GError **error);
GPtrArray * camel_db_get_folder_deleted_uids (CamelDB *db, const gchar *folder_name, GError **error);

gchar * camel_db_sqlize_string (const gchar *string);
void camel_db_free_sqlized_string (gchar *string);

gchar * camel_db_get_column_name (const gchar *raw_name);
gint camel_db_set_collate (CamelDB *cdb, const gchar *col, const gchar *collate, CamelDBCollate func);

gint camel_db_start_in_memory_transactions (CamelDB *cdb, GError **error);
gint camel_db_flush_in_memory_transactions (CamelDB *cdb, const gchar * folder_name, GError **error);

GHashTable *
camel_db_get_folder_preview (CamelDB *db, const gchar *folder_name, GError **error);
gint camel_db_write_preview_record (CamelDB *db, const gchar *folder_name, const gchar *uid, const gchar *msg, GError **error);

gint
camel_db_reset_folder_version (CamelDB *cdb, const gchar *folder_name, gint reset_version, GError **error);

gboolean camel_db_maybe_run_maintenance (CamelDB *cdb, GError **error);

G_END_DECLS

#endif