thompson697
cf0b1faded
Remove the responsibility for loging the application of the course start date offset, from activity modules to the backup module. Merged from stable branch
329 lines
14 KiB
PHP
329 lines
14 KiB
PHP
<?php //$Id$
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//This php script contains all the stuff to backup/restore
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//chat mods
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//This is the "graphical" structure of the chat mod:
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//
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// chat
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// (CL,pk->id)
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// |
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// |
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// |
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// chat_messages
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// (UL,pk->id, fk->chatid)
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//
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// Meaning: pk->primary key field of the table
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// fk->foreign key to link with parent
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// nt->nested field (recursive data)
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// CL->course level info
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// UL->user level info
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// files->table may have files)
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//
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//-----------------------------------------------------------
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//This function executes all the restore procedure about this mod
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function chat_restore_mods($mod,$restore) {
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global $CFG;
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$status = true;
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//Get record from backup_ids
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$data = backup_getid($restore->backup_unique_code,$mod->modtype,$mod->id);
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if ($data) {
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//Now get completed xmlized object
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$info = $data->info;
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//traverse_xmlize($info); //Debug
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//print_object ($GLOBALS['traverse_array']); //Debug
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//$GLOBALS['traverse_array']=""; //Debug
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// if necessary, write to restorelog and adjust date/time fields
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if ($restore->course_startdateoffset) {
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restore_log_date_changes('Chat', $restore, $info['MOD']['#'], array('CHATTIME'));
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}
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//Now, build the CHAT record structure
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$chat->course = $restore->course_id;
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$chat->name = backup_todb($info['MOD']['#']['NAME']['0']['#']);
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$chat->intro = backup_todb($info['MOD']['#']['INTRO']['0']['#']);
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$chat->keepdays = backup_todb($info['MOD']['#']['KEEPDAYS']['0']['#']);
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$chat->studentlogs = backup_todb($info['MOD']['#']['STUDENTLOGS']['0']['#']);
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$chat->schedule = backup_todb($info['MOD']['#']['SCHEDULE']['0']['#']);
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$chat->chattime = backup_todb($info['MOD']['#']['CHATTIME']['0']['#']);
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$chat->timemodified = backup_todb($info['MOD']['#']['TIMEMODIFIED']['0']['#']);
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//The structure is equal to the db, so insert the chat
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$newid = insert_record ("chat",$chat);
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//Do some output
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if (!defined('RESTORE_SILENTLY')) {
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echo "<li>".get_string("modulename","chat")." \"".format_string(stripslashes($chat->name),true)."\"</li>";
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}
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backup_flush(300);
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if ($newid) {
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//We have the newid, update backup_ids
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backup_putid($restore->backup_unique_code,$mod->modtype,
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$mod->id, $newid);
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//Now check if want to restore user data and do it.
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if (restore_userdata_selected($restore,'chat',$mod->id)) {
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//Restore chat_messages
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$status = chat_messages_restore_mods ($mod->id, $newid,$info,$restore);
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}
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} else {
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$status = false;
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}
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} else {
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$status = false;
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}
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return $status;
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}
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//This function restores the chat_messages
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function chat_messages_restore_mods($old_chat_id, $new_chat_id,$info,$restore) {
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global $CFG;
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$status = true;
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//Get the messages array
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$messages = $info['MOD']['#']['MESSAGES']['0']['#']['MESSAGE'];
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//Iterate over messages
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for($i = 0; $i < sizeof($messages); $i++) {
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$mes_info = $messages[$i];
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//traverse_xmlize($mes_info); //Debug
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//print_object ($GLOBALS['traverse_array']); //Debug
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//$GLOBALS['traverse_array']=""; //Debug
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//We'll need this later!!
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$oldid = backup_todb($mes_info['#']['ID']['0']['#']);
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$olduserid = backup_todb($mes_info['#']['USERID']['0']['#']);
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//Now, build the CHAT_MESSAGES record structure
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$message->chatid = $new_chat_id;
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$message->userid = backup_todb($mes_info['#']['USERID']['0']['#']);
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$message->groupid = backup_todb($mes_info['#']['GROUPID']['0']['#']);
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$message->system = backup_todb($mes_info['#']['SYSTEM']['0']['#']);
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$message->message = backup_todb($mes_info['#']['MESSAGE_TEXT']['0']['#']);
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$message->timestamp = backup_todb($mes_info['#']['TIMESTAMP']['0']['#']);
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//We have to recode the userid field
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$user = backup_getid($restore->backup_unique_code,"user",$message->userid);
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if ($user) {
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$message->userid = $user->new_id;
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}
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//We have to recode the groupid field
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$group = backup_getid($restore->backup_unique_code, 'groups' , $message->groupid);
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if ($group) {
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$message->groupid = $group->new_id;
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}
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//The structure is equal to the db, so insert the chat_message
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$newid = insert_record ("chat_messages",$message);
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//Do some output
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if (($i+1) % 50 == 0) {
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if (!defined('RESTORE_SILENTLY')) {
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echo ".";
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if (($i+1) % 1000 == 0) {
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echo "<br />";
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}
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}
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backup_flush(300);
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}
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}
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return $status;
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}
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//Return a content decoded to support interactivities linking. Every module
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//should have its own. They are called automatically from
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//chat_decode_content_links_caller() function in each module
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//in the restore process
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function chat_decode_content_links ($content,$restore) {
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global $CFG;
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$result = $content;
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//Link to the list of chats
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$searchstring='/\$@(CHATINDEX)\*([0-9]+)@\$/';
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//We look for it
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preg_match_all($searchstring,$content,$foundset);
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//If found, then we are going to look for its new id (in backup tables)
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if ($foundset[0]) {
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//print_object($foundset); //Debug
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//Iterate over foundset[2]. They are the old_ids
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foreach($foundset[2] as $old_id) {
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//We get the needed variables here (course id)
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$rec = backup_getid($restore->backup_unique_code,"course",$old_id);
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//Personalize the searchstring
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$searchstring='/\$@(CHATINDEX)\*('.$old_id.')@\$/';
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//If it is a link to this course, update the link to its new location
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if($rec->new_id) {
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//Now replace it
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$result= preg_replace($searchstring,$CFG->wwwroot.'/mod/chat/index.php?id='.$rec->new_id,$result);
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} else {
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//It's a foreign link so leave it as original
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$result= preg_replace($searchstring,$restore->original_wwwroot.'/mod/chat/index.php?id='.$old_id,$result);
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}
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}
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}
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//Link to chat view by moduleid
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$searchstring='/\$@(CHATVIEWBYID)\*([0-9]+)@\$/';
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//We look for it
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preg_match_all($searchstring,$result,$foundset);
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//If found, then we are going to look for its new id (in backup tables)
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if ($foundset[0]) {
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//print_object($foundset); //Debug
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//Iterate over foundset[2]. They are the old_ids
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foreach($foundset[2] as $old_id) {
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//We get the needed variables here (course_modules id)
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$rec = backup_getid($restore->backup_unique_code,"course_modules",$old_id);
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//Personalize the searchstring
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$searchstring='/\$@(CHATVIEWBYID)\*('.$old_id.')@\$/';
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//If it is a link to this course, update the link to its new location
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if($rec->new_id) {
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//Now replace it
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$result= preg_replace($searchstring,$CFG->wwwroot.'/mod/chat/view.php?id='.$rec->new_id,$result);
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} else {
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//It's a foreign link so leave it as original
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$result= preg_replace($searchstring,$restore->original_wwwroot.'/mod/chat/view.php?id='.$old_id,$result);
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}
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}
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}
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return $result;
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}
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//This function makes all the necessary calls to xxxx_decode_content_links()
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//function in each module, passing them the desired contents to be decoded
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//from backup format to destination site/course in order to mantain inter-activities
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//working in the backup/restore process. It's called from restore_decode_content_links()
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//function in restore process
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function chat_decode_content_links_caller($restore) {
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global $CFG;
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$status = true;
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if ($chats = get_records_sql ("SELECT c.id, c.intro
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FROM {$CFG->prefix}chat c
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WHERE c.course = $restore->course_id")) {
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//Iterate over each chat->intro
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$i = 0; //Counter to send some output to the browser to avoid timeouts
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foreach ($chats as $chat) {
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//Increment counter
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$i++;
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$content = $chat->intro;
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$result = restore_decode_content_links_worker($content,$restore);
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if ($result != $content) {
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//Update record
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$chat->intro = addslashes($result);
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$status = update_record("chat",$chat);
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if (debugging()) {
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if (!defined('RESTORE_SILENTLY')) {
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echo '<br /><hr />'.s($content).'<br />changed to<br />'.s($result).'<hr /><br />';
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}
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}
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}
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//Do some output
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if (($i+1) % 5 == 0) {
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if (!defined('RESTORE_SILENTLY')) {
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echo ".";
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if (($i+1) % 100 == 0) {
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echo "<br />";
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}
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}
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backup_flush(300);
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}
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}
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}
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return $status;
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}
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//This function returns a log record with all the necessay transformations
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//done. It's used by restore_log_module() to restore modules log.
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function chat_restore_logs($restore,$log) {
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$status = false;
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//Depending of the action, we recode different things
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switch ($log->action) {
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case "add":
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if ($log->cmid) {
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//Get the new_id of the module (to recode the info field)
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$mod = backup_getid($restore->backup_unique_code,$log->module,$log->info);
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if ($mod) {
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$log->url = "view.php?id=".$log->cmid;
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$log->info = $mod->new_id;
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$status = true;
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}
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}
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break;
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case "update":
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if ($log->cmid) {
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//Get the new_id of the module (to recode the info field)
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$mod = backup_getid($restore->backup_unique_code,$log->module,$log->info);
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if ($mod) {
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$log->url = "view.php?id=".$log->cmid;
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$log->info = $mod->new_id;
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$status = true;
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}
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}
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break;
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case "talk":
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if ($log->cmid) {
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//Get the new_id of the module (to recode the info field)
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$mod = backup_getid($restore->backup_unique_code,$log->module,$log->info);
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if ($mod) {
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$log->url = "view.php?id=".$log->cmid;
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$log->info = $mod->new_id;
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$status = true;
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}
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}
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break;
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case "view":
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if ($log->cmid) {
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//Get the new_id of the module (to recode the info field)
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$mod = backup_getid($restore->backup_unique_code,$log->module,$log->info);
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if ($mod) {
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$log->url = "view.php?id=".$log->cmid;
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$log->info = $mod->new_id;
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$status = true;
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}
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}
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break;
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case "view all":
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$log->url = "index.php?id=".$log->course;
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$status = true;
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break;
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case "report":
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if ($log->cmid) {
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//Get the new_id of the module (to recode the info field)
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$mod = backup_getid($restore->backup_unique_code,$log->module,$log->info);
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if ($mod) {
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$log->url = "report.php?id=".$log->cmid;
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$log->info = $mod->new_id;
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$status = true;
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}
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}
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break;
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default:
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if (!defined('RESTORE_SILENTLY')) {
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echo "action (".$log->module."-".$log->action.") unknown. Not restored<br />"; //Debug
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}
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break;
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}
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if ($status) {
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$status = $log;
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}
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return $status;
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}
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?>
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