import com.mongodb.MongoClient;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.BasicDBObject;
import com.mongodb.DBObject;
import com.mongodb.DBCursor;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.sql.*;
public class edx_to_moodle_video_transfer {
static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
static final String DB_URL = "jdbc:mysql://localhost/moodle";
static final String USER = "root";
static final String PASS = "root";
public static void main(String[] args) throws ClassNotFoundException, IOException, SQLException, NoSuchAlgorithmException {
Class.forName("com.mysql.jdbc.Driver");
Connection conn = null;
conn = DriverManager.getConnection(DB_URL, USER, PASS);
Statement stmt = conn.createStatement(); //mysql statement
//To connect to mongodb server
MongoClient mongoClient = new MongoClient("localhost", 27017);
//Now connect to your databases
DB db = mongoClient.getDB("xmodule");
DBCollection coll = db.getCollection("modulestore");
String video_to_be_sent = "";
BasicDBObject query = new BasicDBObject("_id.category", "video");
DBCursor cursor = coll.find(query);
String result = "", resultcopy = "";
int subsection_it_was_added = 0;
int section_it_was_added = 0;
while (cursor.hasNext()) {
DBObject tobj = cursor.next();
result = tobj.get("_id").toString();
resultcopy = result;
video_to_be_sent = tobj.get("metadata").toString();
}
String[] temp1 = result.split(":");
String resa = temp1[3];
String[] resb = resa.split(",");
String resc = resb[0];
String courseid = resc.substring(2, resc.length() - 2);
System.out.println(courseid);
video_to_be_sent = video_to_be_sent.replace("{", "");
String temp10[] = video_to_be_sent.split(",");
String temp11[] = temp10[0].split(":");
temp11[1] = temp11[1].replace("\"", "");
video_to_be_sent = "https://www.youtube.com/watch?v=" + temp11[1].substring(1, temp11[1].length());
String temp12[] = temp10[1].split(",");
String temp13[] = temp12[0].split(":");
temp13[1] = temp13[1].replace("\"", "");
String video_name_to_be_sent = temp13[1];
video_to_be_sent = video_to_be_sent.substring(0, video_to_be_sent.length() - 1);
System.out.println(video_to_be_sent);
video_name_to_be_sent = video_name_to_be_sent.substring(1, video_name_to_be_sent.length() - 1);
System.out.println(video_name_to_be_sent);
String sql = "select * from mdl_course where idnumber=" + "'" + courseid + "'";
System.out.println(sql);
ResultSet rs = stmt.executeQuery(sql);
int id = 0;
while (rs.next()) {
id = rs.getInt("id");
}
System.out.println(id);
sql = "select * from mdl_url where course=" + id + " and externalurl=" + "'" + video_to_be_sent + "'";
rs = stmt.executeQuery(sql);
int flag = 1;
while (rs.next()) {
flag = 0;
}
if (flag == 1) {
String[] temp2 = resultcopy.split(":");
String rese = temp2[5];
String[] resf = rese.split(",");
String resg = resf[0];
String problemid_edx = resg.substring(2, resg.length() - 2);
System.out.println(problemid_edx);
//System.out.println();
String subsectioname = "";
String subsection_name_to_be_sent = "";
// courseid and problemid fetched
BasicDBObject query1 = new BasicDBObject("_id.category", "course");
cursor = coll.find(query1);
while (cursor.hasNext()) {
DBObject tobj = cursor.next();
result = tobj.get("definition").toString();
resultcopy = result;
String[] temp3 = result.split("]");
String resd = temp3[0];
String resi = resd.substring(17, resd.length());
if (resi.compareTo("") != 0) {
String[] temp4 = result.split("/");
if (temp4[3].compareTo(courseid) == 0) {
String[] temp5 = resi.replace(" ", "").replace("\"", "").split(","); // ids of all section
String[] chapterids = new String[temp5.length];
for (int i = 0; i < temp5.length; i++) {
chapterids[i] = temp5[i].substring(temp5[i].length() - 32, temp5[i].length());
//System.out.println(chapterids[i]+": Section");
BasicDBObject query3 = new BasicDBObject("_id.category", "chapter");
cursor = coll.find(query3);
while (cursor.hasNext()) {
tobj = cursor.next();
result = tobj.get("_id").toString();
resultcopy = tobj.get("definition").toString();
//System.out.println(" "+result);
String[] temp1ch = result.split(":");
String resach = temp1ch[5];
String[] resbch = resach.split(",");
String rescch = resbch[0];
String courseidch = rescch.substring(2, rescch.length() - 2);
if (chapterids[i].compareTo(courseidch) == 0) // enter the section
{
//System.out.println(resultcopy);
String[] tempaach = resultcopy.split("]");
//System.out.println(tempaach[0]);
String resiich = tempaach[0].substring(17, tempaach[0].length());
String resiiich = resiich.replace(" ", "").replace("\"", "");
//System.out.println(resiiich);
String[] temp7 = resiiich.split(",");
String[] sequenceids = new String[temp7.length];
for (int l = 0; l < temp7.length; l++) {
sequenceids[l] = temp7[l].substring(temp7[l].length() - 32, temp7[l].length());
//System.out.println(" "+sequenceids[l]+": SubSection"); // ids of all subsections
BasicDBObject query4 = new BasicDBObject("_id.category", "sequential");
cursor = coll.find(query4);
while (cursor.hasNext()) {
tobj = cursor.next();
result = tobj.get("_id").toString();
resultcopy = tobj.get("definition").toString();
//System.out.println(" "+result);
subsectioname = tobj.get("metadata").toString();
String[] temp1sq = result.split(":");
String resasq = temp1sq[5];
String[] resbsq = resasq.split(",");
String rescsq = resbsq[0];
String courseidsq = rescsq.substring(2, rescsq.length() - 2);
//System.out.println(courseidsq);
if (sequenceids[l].compareTo(courseidsq) == 0) {
//System.out.println(resultcopy);
String[] tempaasq = resultcopy.split("]");
//System.out.println(tempaach[0]);
String resiisq = tempaasq[0].substring(17, tempaasq[0].length());
String resiiisq = resiisq.replace(" ", "").replace("\"", "");
//System.out.println(resiiisq);
String[] temp8 = resiiisq.split(",");
String[] verticalids = new String[temp8.length];
for (int m = 0; m < temp8.length; m++) {
verticalids[m] = temp8[m].substring(temp8[m].length() - 32, temp8[m].length());
//System.out.println(" "+verticalids[m]+": Unit"); // ids of all units
BasicDBObject query5 = new BasicDBObject("_id.category", "vertical");
cursor = coll.find(query5);
while (cursor.hasNext()) {
tobj = cursor.next();
result = tobj.get("_id").toString();
resultcopy = tobj.get("definition").toString();
//System.out.println(" "+result);
String[] temp1vr = result.split(":");
String resavr = temp1vr[5];
String[] resbvr = resavr.split(",");
String rescvr = resbvr[0];
String courseidvr = rescvr.substring(2, rescvr.length() - 2);
//System.out.println(courseidvr);
if (verticalids[m].compareTo(courseidvr) == 0) {
//System.out.println(resultcopy);
String[] tempaavr = resultcopy.split("]");
//System.out.println(tempaach[0]);
String resiivr = tempaavr[0].substring(17, tempaavr[0].length());
String resiiivr = resiivr.replace(" ", "").replace("\"", "");
//System.out.println(resiiivr);
String[] temp9 = resiiivr.split(",");
String[] problemids = new String[temp9.length];
for (int n = 0; n < temp9.length; n++) {
problemids[n] = temp9[n].substring(temp9[n].length() - 32, temp9[n].length());
//System.out.println(" "+problemids[n]+": Problem or Video"); // ids of all problems
if (problemids[n].compareTo(problemid_edx) == 0) {
//System.out.println("\nProblem is in Section "+(i+1));
//System.out.println("\nProblem is in Section "+(i+1));
section_it_was_added = i + 1;
subsection_it_was_added = l + 1;
subsection_name_to_be_sent = subsectioname;
//System.out.println("Question:\n"+video_to_be_sent);
break;
}
}
}
}
}
}
}
}
}
}
}
}
}
}
subsection_name_to_be_sent = subsection_name_to_be_sent.substring(20, subsection_name_to_be_sent.length() - 2);
System.out.print("Problem/Video is in Section: " + section_it_was_added + ", Problem/Video is in SubSection: " + subsection_it_was_added);
System.out.print(", Subsection Name: " + subsection_name_to_be_sent);
System.out.println();
//video_to_be_sent = video_to_be_sent.replace(" ", "");
cursor.close();
//for mdl_context.................................
String test1 = "select * from mdl_context where instanceid=" + id + " and contextlevel=50";
int idagainstinstanceid = 0;
rs = stmt.executeQuery(test1);
while (rs.next()) {
idagainstinstanceid = rs.getInt("id");
}
System.out.println(idagainstinstanceid);
int instanceidcontent = 0;
test1 = "select * from mdl_context where contextlevel=70";
rs = stmt.executeQuery(test1);
while (rs.next()) {
instanceidcontent = rs.getInt("instanceid");
}
instanceidcontent++;
String path_for_mdl_context = "/1/3/" + Integer.toString(idagainstinstanceid) + "/";
test1 = "insert into mdl_context (contextlevel, instanceid, path, depth)" + " values(70,'" + instanceidcontent + "','" + path_for_mdl_context + "',4)";
//System.out.println(test1);
stmt.execute(test1);
rs = stmt.executeQuery("select * from mdl_context where id =(select max(id) from mdl_context)");
int idforpath = 0;
while (rs.next()) {
idforpath = rs.getInt("id");
}
path_for_mdl_context = "'/1/3/" + Integer.toString(idagainstinstanceid) + "/" + Integer.toString(idforpath) + "'";
//System.out.println(path_for_mdl_context);
rs = stmt.executeQuery("select * from mdl_context");
int lastidfromcontexttable = 0;
while (rs.next()) {
lastidfromcontexttable = rs.getInt("id");
}
test1 = "update mdl_context set path =" + path_for_mdl_context + " where id =" + Integer.toString(lastidfromcontexttable);
//System.out.println(test1);
stmt.execute(test1);
//end of mdl_context.....................
//for mdl_course_sections
int idforsequence = 0;
sql = "select * from mdl_context where contextlevel=70 and id=(select max(id) from mdl_context)";
rs = stmt.executeQuery(sql);
while (rs.next()) {
idforsequence = rs.getInt("instanceid");
}
int section = 0;
String sequence = "";
sql = "select * from mdl_course_sections where course=" + id + " and section=" + section_it_was_added;
rs = stmt.executeQuery(sql);
while (rs.next()) {
section = rs.getInt("id");
sequence = rs.getString("sequence");
}
//System.out.println(section);
String temptocompare = "";
if (sequence.compareTo(temptocompare) == 0) {
sequence = Integer.toString(idforsequence);
} else {
sequence = sequence + "," + Integer.toString(idforsequence);
}
sql = "update mdl_course_sections set sequence=" + "'" + sequence + "'" + " where id=" + section;
System.out.println(sql);
stmt.execute(sql);
//end of mdl_course_sections................................................
//start of mdl_course_modules...............................................
int instanceid = 0;
sql = "select * from mdl_course_modules where module=20";
rs = stmt.executeQuery(sql);
while (rs.next()) {
instanceid = rs.getInt("instance");
}
instanceid++;
System.out.println(instanceid);
sql = "insert into mdl_course_modules(course,module,instance,section,added,score,indent,visible,visibleold,groupmode,groupingid,groupmembersonly,completion,completionview,completionexpected,availablefrom,availableuntil,showavailability,showdescription)" + " values('" + id + "',20,'" + instanceid + "','" + section + "',0,0,0,1,1,0,0,0,0,0,0,0,0,0,0)";
//System.out.println(sql);
stmt.execute(sql);
//end of mdl_course_modules.............................................................
//for mdl_url to fill
String displayoption = "a:2:{s:12:" + "\"printheading\";i:0;s:10:" + "\"printintro\";i:1;}";
//System.out.println(displayoption);
sql = "insert into mdl_url (course,name,intro,introformat,externalurl,display,displayoptions,parameters,timemodified)" + " values('" + id + "','" + video_name_to_be_sent + "','<p>No Description Available</p>',1,'" + video_to_be_sent + "',1,'" + displayoption + "','a:0:{}',0)";
System.out.println(sql);
stmt.execute(sql);
}
}
}