/*****************************************************************************
 *
 * $Id$
 * Purpose ...............: Add TIC file to the BBS
 *
 *****************************************************************************
 * Copyright (C) 1997-2002
 *   
 * Michiel Broek		FIDO:		2:280/2802
 * Beekmansbos 10
 * 1971 BV IJmuiden
 * the Netherlands
 *
 * This file is part of MBSE BBS.
 *
 * This BBS is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * MBSE BBS 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
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with MBSE BBS; see the file COPYING.  If not, write to the Free
 * Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *****************************************************************************/

#include "../config.h"
#include "../lib/libs.h"
#include "../lib/memwatch.h"
#include "../lib/structs.h"
#include "../lib/users.h"
#include "../lib/records.h"
#include "../lib/common.h"
#include "../lib/clcomm.h"
#include "tic.h"
#include "fsort.h"
#include "addbbs.h"


extern	int	tic_imp;


/*
 *  Add file to the BBS file database and place it in the download
 *  directory. If it is replacing a file, a file with a matching name
 *  will be deleted. If there is a limit on the number of files with
 *  the  same name pattern, the oldest files will be deleted. The
 *  files database will be packed if necessary. All modifications are
 *  done on temp files first.
 */
int Add_BBS()
{
	struct FILERecord	frec;
	int			rc, i, Insert, Done = FALSE, Found = FALSE;
	char			fdbname[PATH_MAX], fdbtemp[PATH_MAX];
	char			temp1[PATH_MAX], temp2[PATH_MAX], *fname;
	FILE			*fdb, *fdt;
	int			Keep = 0, DidDelete = FALSE;
	fd_list			*fdl = NULL;

	/*
	 * Create filedatabase record.
	 */
	memset(&frec, 0, sizeof(frec));
	sprintf(temp1, "%s", TIC.NewName);
	name_mangle(temp1);
	strcpy(frec.Name, temp1);
	strcpy(frec.LName, TIC.NewName);
	frec.TicAreaCRC =  StringCRC32(TIC.TicIn.Area);
	frec.Size = TIC.FileSize;
	frec.Crc32 = TIC.Crc_Int;
	frec.Announced = TRUE;
	sprintf(frec.Uploader, "Filemgr");
	frec.UploadDate = time(NULL);
	frec.FileDate = TIC.FileDate;
	for (i = 0; i <= TIC.File_Id_Ct; i++) {
		strcpy(frec.Desc[i], TIC.File_Id[i]);
		if (i == 24)
			break;
	}
	if (strlen(TIC.TicIn.Magic))
		sprintf(frec.Desc[i], "Magic Request: %s", TIC.TicIn.Magic);

	sprintf(temp1, "%s/%s", TIC.Inbound, TIC.NewName);
	sprintf(temp2, "%s/%s", TIC.BBSpath, TIC.NewName);
	mkdirs(temp2, 0755);

	if ((rc = file_cp(temp1, temp2))) {
		WriteError("Copy to %s failed: %s", temp2, strerror(rc));
		return FALSE;
	}
	chmod(temp2, 0644);

	sprintf(fdbname, "%s/fdb/fdb%ld.data", getenv("MBSE_ROOT"), tic.FileArea);
	sprintf(fdbtemp, "%s/fdb/fdb%ld.temp", getenv("MBSE_ROOT"), tic.FileArea);

	if ((fdb = fopen(fdbname, "r+")) == NULL) {
		Syslog('+', "Fdb %s doesn't exist, creating", fdbname);
		if ((fdb = fopen(fdbname, "a+")) == NULL) {
			WriteError("$Can't create %s", fdbname);
			return FALSE;
		}
		chmod(fdbname, 0660);
	}

	/*
	 * If there are no files in this area, we append the first
	 * one and leave immediatly, keepnum and replace have no
	 * use at this point.
	 */
	fseek(fdb, 0, SEEK_END);
	if (ftell(fdb) == 0) {
		fwrite(&frec, sizeof(frec), 1, fdb);
		fclose(fdb);
		file_rm(temp1);
		tic_imp++;
		return TRUE;
	}

	/*
	 * There are already files in the area. We must now see at
	 * which position to insert the new file, replace or
	 * remove the old entry.
	 */
	fseek(fdb, 0, SEEK_SET);

	Insert = 0;
	do {
		if (fread(&file, sizeof(file), 1, fdb) != 1)
			Done = TRUE;
		if (!Done) {
			if (strcmp(frec.LName, file.LName) == 0) {
				Found = TRUE;
				Insert++;
			} else
				if (strcmp(frec.LName, file.LName) < 0)
					Found = TRUE;
				else
					Insert++;
		}
	} while ((!Found) && (!Done));

	if (Found) {
		if ((fdt = fopen(fdbtemp, "a+")) == NULL) {
			WriteError("$Can't create %s", fdbtemp);
			fclose(fdb);
			return FALSE;
		}

		fseek(fdb, 0, SEEK_SET);
		/*
		 * Copy entries till the insert point.
		 */
		for (i = 0; i < Insert; i++) {
			fread(&file, sizeof(file), 1, fdb);
			/*
			 * Check if we are importing a file with the same
			 * name, if so, don't copy the original database
			 * record. The file is also overwritten.
			 */
			if (strcmp(file.LName, frec.LName) != 0)
				fwrite(&file, sizeof(file), 1, fdt);
		}

		if (area.AddAlpha) {
			/*
			 * Insert the new entry
			 */
			fwrite(&frec, sizeof(frec), 1, fdt);
		}

		/*
		 * Append the rest of the entries.
		 */
		while (fread(&file, sizeof(file), 1, fdb) == 1) {
			/*
			 * Check if we find a file with the same name,
			 * then we skip the record what was origionaly
			 * in the database record.
			 */
			if (strcmp(file.LName, frec.LName) != 0)
				fwrite(&file, sizeof(file), 1, fdt);
		}

		if (!area.AddAlpha) {
			/*
			 * Append the new entry
			 */
			fwrite(&frec, sizeof(frec), 1, fdt);
		}
		fclose(fdt);
		fclose(fdb);

		/*
		 * Now make the changes for real.
		 */
		if (unlink(fdbname) == 0) {
			rename(fdbtemp, fdbname);
		} else {
			WriteError("$Can't unlink %s", fdbname);
			unlink(fdbtemp);
			return FALSE;
		}

	} else {
		/*
		 * Append the new entry
		 */
		fseek(fdb, 0, SEEK_END);
		fwrite(&frec, sizeof(frec), 1, fdb);
		fclose(fdb);
	}

	/*
	 * Delete file from the inbound
	 */
	if ((i = file_rm(temp1)))
		WriteError("$ %d = file_rm(%s)", i, temp1);

	/*
	 * Handle the replace option.
	 */
	if ((strlen(TIC.TicIn.Replace)) && (tic.Replace)) {
		Syslog('f', "Must Replace: %s", TIC.TicIn.Replace);

		if ((fdb = fopen(fdbname, "r+")) != NULL) {

			while (fread(&file, sizeof(file), 1, fdb) == 1) {
				if (strlen(file.LName) == strlen(TIC.NewName)) {
					if (strcasecmp(file.LName, TIC.NewName) != 0) {
						Found = TRUE;
						for (i = 0; i < strlen(TIC.NewName); i++) {
							if ((TIC.TicIn.Replace[i] != '?') &&
							    (toupper(TIC.TicIn.Replace[i]) != toupper(file.LName[i])))
								Found = FALSE;
						}
						if (Found) {
							Syslog('+', "Replace: Deleting: %s", file.LName);
							file.Deleted = TRUE;
							fseek(fdb, - sizeof(file), SEEK_CUR);
							fwrite(&file, sizeof(file), 1, fdb);
							DidDelete = TRUE;
						}
					}
				}
			}
			fclose(fdb);
		}
	}

	/*
	 * Handle the Keep number of files option
	 */
	if (TIC.KeepNum) {
		if ((fdb = fopen(fdbname, "r")) != NULL) {

			while (fread(&file, sizeof(file), 1, fdb) == 1) {

				if ((strlen(file.LName) == strlen(TIC.NewName)) && (!file.Deleted)) {
					Found = TRUE;

					for (i = 0; i < strlen(file.LName); i++) {
						if ((TIC.NewName[i] < '0') || (TIC.NewName[i] > '9')) {
							if (TIC.NewName[i] != file.LName[i]) {
								Found = FALSE;
							}
						}
					}
					if (Found) {
						Keep++;
						fill_fdlist(&fdl, file.LName, file.UploadDate);
					}
				}
			}
			fclose(fdb);
		}

		/*
		 * If there are files to delete, mark them.
		 */
		if (Keep > TIC.KeepNum) {
			sort_fdlist(&fdl);

			if ((fdb = fopen(fdbname, "r+")) != NULL) {
				for (i = 0; i < (Keep - TIC.KeepNum); i++) {
					fname = pull_fdlist(&fdl);
					fseek(fdb, 0, SEEK_SET);

					while (fread(&file, sizeof(file), 1, fdb) == 1) {
						if (strcmp(file.LName, fname) == 0) {
							Syslog('+', "Keep %d files, deleting: %s", TIC.KeepNum, file.LName);
							file.Deleted = TRUE;
							fseek(fdb, - sizeof(file), SEEK_CUR);
							fwrite(&file, sizeof(file), 1, fdb);
							DidDelete = TRUE;
						}
					}
				}
				fclose(fdb);
			}
		}
		tidy_fdlist(&fdl);
	}

	/*
	 *  Now realy delete the marked files and clean the file
	 *  database.
	 */
	if (DidDelete) {
		if ((fdb = fopen(fdbname, "r")) != NULL) {
			if ((fdt = fopen(fdbtemp, "a+")) != NULL) {
				while (fread(&file, sizeof(file), 1, fdb) == 1)
					if (!file.Deleted)
						fwrite(&file, sizeof(file), 1, fdt);
					else {
						sprintf(temp2, "%s/%s", area.Path, file.LName);
						if (unlink(temp2) != 0)
							WriteError("$Can't unlink file %s", temp2);
					}
				fclose(fdb);
				fclose(fdt);
				if (unlink(fdbname) == 0) {
					rename(fdbtemp, fdbname);
				} else {
					WriteError("$Can't unlink %s", fdbname);
					unlink(fdbtemp);
				}
			} else {
				fclose(fdb);
			}
			DidDelete = FALSE;
		}
	}

	tic_imp++;
	return TRUE;
}