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<?PHP //$Id$
//This php script contains all the stuff to backup/restore
//dialogue mods
//This is the "graphical" structure of the dialogue mod:
//
// dialogue
// (CL,pk->id)
// |
// |
// |
// dialogue_conversations
// (UL,pk->id, fk->dialogueid)
// |
// |
// |
// dialogue_entries
// (UL,pk->id, fk->dialogueid,conversationid)
//
// Meaning: pk->primary key field of the table
// fk->foreign key to link with parent
// nt->nested field (recursive data)
// CL->course level info
// UL->user level info
// files->table may have files)
//
//-----------------------------------------------------------
function dialogue_backup_mods($bf,$preferences) {
global $CFG;
$status = true;
//Iterate over dialogue table
$dialogues = get_records ("dialogue","course",$preferences->backup_course,"id");
if ($dialogues) {
foreach ($dialogues as $dialogue) {
//Start mod
fwrite ($bf,start_tag("MOD",3,true));
//Print dialogue data
fwrite ($bf,full_tag("ID",4,false,$dialogue->id));
fwrite ($bf,full_tag("MODTYPE",4,false,"dialogue"));
fwrite ($bf,full_tag("NAME",4,false,$dialogue->name));
fwrite ($bf,full_tag("INTRO",4,false,$dialogue->intro));
fwrite ($bf,full_tag("DELETEAFTER",4,false,$dialogue->deleteafter));
fwrite ($bf,full_tag("DIALOGUETYPE",4,false,$dialogue->dialoguetype));
fwrite ($bf,full_tag("MULTIPLECONVERSATIONS",4,false,$dialogue->multipleconversations));
fwrite ($bf,full_tag("MAILDEFAULT",4,false,$dialogue->maildefault));
fwrite ($bf,full_tag("TIMEMODIFIED",4,false,$dialogue->timemodified));
//if we've selected to backup users info, then execute backup_dialogue_conversations
if ($preferences->mods["dialogue"]->userinfo) {
$status = backup_dialogue_conversations($bf,$preferences,$dialogue->id);
}
//End mod
$status =fwrite ($bf,end_tag("MOD",3,true));
}
}
return $status;
}
//Backup dialogue_conversations contents (executed from dialogue_backup_mods)
function backup_dialogue_conversations ($bf,$preferences,$dialogue) {
global $CFG;
$status = true;
$dialogue_conversations = get_records("dialogue_conversations","dialogue",$dialogue,"id");
//If there is conversationss
if ($dialogue_conversations) {
//Write start tag
$status =fwrite ($bf,start_tag("CONVERSATIONS",4,true));
//Iterate over each entry
foreach ($dialogue_conversations as $conversation) {
//Start entry
$status =fwrite ($bf,start_tag("CONVERSATION",5,true));
//Print dialogue_entries contents
fwrite ($bf,full_tag("ID",6,false,$conversation->id));
fwrite ($bf,full_tag("USERID",6,false,$conversation->userid));
fwrite ($bf,full_tag("RECIPIENTID",6,false,$conversation->recipientid));
fwrite ($bf,full_tag("LASTID",6,false,$conversation->lastid));
fwrite ($bf,full_tag("TIMEMODIFIED",6,false,$conversation->timemodified));
fwrite ($bf,full_tag("CLOSED",6,false,$conversation->closed));
fwrite ($bf,full_tag("SEENON",6,false,$conversation->seenon));
fwrite ($bf,full_tag("CTYPE",6,false,$conversation->ctype));
fwrite ($bf,full_tag("FORMAT",6,false,$conversation->format));
fwrite ($bf,full_tag("SUBJECT",6,false,$conversation->subject));
//End entry
$status =fwrite ($bf,end_tag("CONVERSATION",5,true));
}
//if we've selected to backup users info, then execute backup_dialogue_entries
if ($preferences->mods["dialogue"]->userinfo) {
$status = backup_dialogue_entries($bf,$preferences,$conversation->id);
}
//Write end tag
$status =fwrite ($bf,end_tag("CONVERSATIONS",4,true));
}
return $status;
}
//Backup dialogue_entries contents (executed from dialogue_backup_mods)
function backup_dialogue_entries ($bf,$preferences,$conversationid) {
global $CFG;
$status = true;
$dialogue_entries = get_records("dialogue_entries","conversationid",$conservationid,"id");
//If there is entries
if ($dialogue_entries) {
//Write start tag
$status =fwrite ($bf,start_tag("ENTRIES",4,true));
//Iterate over each entry
foreach ($dialogue_entries as $entry) {
//Start entry
$status =fwrite ($bf,start_tag("ENTRY",5,true));
//Print dialogue_entries contents
fwrite ($bf,full_tag("ID",6,false,$entry->id));
fwrite ($bf,full_tag("USERID",6,false,$entry->userid));
fwrite ($bf,full_tag("TIMECREATED",6,false,$entry->modified));
fwrite ($bf,full_tag("MAILED",6,false,$entry->text));
fwrite ($bf,full_tag("TEXT",6,false,$entry->format));
//End entry
$status =fwrite ($bf,end_tag("ENTRY",5,true));
}
//Write end tag
$status =fwrite ($bf,end_tag("ENTRIES",4,true));
}
return $status;
}
////Return an array of info (name,value)
function dialogue_check_backup_mods($course,$user_data=false,$backup_unique_code) {
//First the course data
$info[0][0] = get_string("modulenameplural","dialogue");
if ($ids = dialogue_ids ($course)) {
$info[0][1] = count($ids);
} else {
$info[0][1] = 0;
}
//Now, if requested, the user_data
if ($user_data) {
$info[1][0] = get_string("entries","dialogue");
if ($ids = dialogue_entry_ids_by_course ($course)) {
$info[1][1] = count($ids);
} else {
$info[1][1] = 0;
}
}
return $info;
}
// INTERNAL FUNCTIONS. BASED IN THE MOD STRUCTURE
//Returns an array of dialogues id
function dialogue_ids ($course) {
global $CFG;
return get_records_sql ("SELECT a.id, a.course
FROM {$CFG->prefix}dialogue a
WHERE a.course = '$course'");
}
//Returns an array of dialogue entries id
function dialogue_entry_ids_by_course ($course) {
global $CFG;
return get_records_sql ("SELECT s.id , s.dialogue
FROM {$CFG->prefix}dialogue_entries s,
{$CFG->prefix}dialogue a
WHERE a.course = '$course' AND
s.dialogue = a.id");
}
?>
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