initial version

2021-01-13 22:49:31 +01:00
commit 568e577173
8 changed files with 533 additions and 0 deletions
@@ -0,0 +1,184 @@
+package downloader;
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+import org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream;
+import org.apache.commons.compress.utils.IOUtils;
+
+import com.google.gson.Gson;
+
+import downloader.forgeSvc.ForgeSvcEntry;
+import downloader.forgeSvc.ForgeSvcFile;
+
+public class Database {
+
+	String version;
+	DBConnector connector;
+	Gson gson;
+
+	public Database() {
+
+		// Todo save ver
+		this.version = "";
+		gson = new Gson();
+		
+	}
+
+	public void updateDatabase() {
+		try {
+			String dbVersion = HttpHelper.readStringFromUrl("http://files.mcdex.net/data/latest.v5");
+			if (dbVersion.equals(version)) {
+				println("alredy up to date");
+				return;
+			}
+			if (dbVersion.equals("error")) {
+				println("an error ocured");
+				return;
+			}
+
+			println("newer version found");
+			if (!this.version.isEmpty()) {
+				println("current=" + this.version + " remote=" + dbVersion);
+			} else {
+				println("new=" + dbVersion);
+			}
+
+			println("fetching=" + "http://files.mcdex.net/data/mcdex-v5-" + dbVersion + ".dat.bz2");
+			File archive = HttpHelper.readFileFromUrl(null,"http://files.mcdex.net/data/mcdex-v5-" + dbVersion + ".dat.bz2");
+			println("download finished");
+			println("decompressing db");
+			File decompressedDatabase;
+			try {
+				decompressedDatabase = decompressBz2(archive, "database.dat");
+			} catch (IOException e) {
+				println("cannot extract database");
+				return;
+			}
+			println("done");
+			println("loading the database");
+			connector = new DBConnector();
+			try {
+				connector.connect(decompressedDatabase.getAbsolutePath());
+			} catch (SQLException e) {
+				return;
+			}
+			println("database loaded");
+			this.version = dbVersion;
+
+		} catch (MalformedURLException e) {
+			println("database link is dead");
+			System.exit(1);
+		}
+	}
+
+	private void print(String message) {
+		System.out.print("db : " + message);
+	}
+
+	private void println(String message) {
+		print(message + "\n");
+	}
+
+	private File decompressBz2(File inputFile, String outputFile) throws IOException {
+		BZip2CompressorInputStream input = new BZip2CompressorInputStream(
+				new BufferedInputStream(new FileInputStream(inputFile)));
+		File decompressedFile = new File(outputFile);
+		FileOutputStream output = new FileOutputStream(decompressedFile);
+		IOUtils.copy(input, output);
+		return decompressedFile;
+	}
+
+	private int findProjectBySlug(String slug, int ptype) {
+		int modID = -1;
+		ResultSet rs = connector.executeRequest("select projectid from projects where type =" + ptype + " and slug =\""
+				+ slug.trim().toLowerCase() + "\"");
+		try {
+			if (rs.next()) {
+				modID = rs.getInt("projectid");
+				System.out.println("modid:" + modID);
+			} else {
+				System.out.println("not found " + slug);
+				return -1;
+			}
+		} catch (SQLException e) {
+			e.printStackTrace();
+			return -1;
+		}
+		return modID;
+	}
+
+	private int findModBySlug(String slug) {
+		return findProjectBySlug(slug, 0);
+	}
+
+	private ProjectInfo getProjectInfo(int projectId) {
+		System.out.println(
+				"select slug, name, description from projects where projectid = " + projectId + " and type = 0");
+		ResultSet rs = connector.executeRequest(
+				"select slug, name, description from projects where projectid = " + projectId + " and type = 0");
+		try {
+			if (rs.next()) {
+				return new ProjectInfo(rs.getString("slug"), rs.getString("name"), rs.getString("description"));
+			}
+		} catch (SQLException e) {
+		}
+		return null;
+	}
+
+	public boolean fetchMod(String string) {
+		String name = string.split("/")[5];
+		int modID = findModBySlug(name);
+		if (modID == -1)
+			return false;
+		ProjectInfo pj = getProjectInfo(modID);
+		if (pj == null)
+			return false;
+		CurseForgeModFile modfile = new CurseForgeModFile(pj, modID, -1, false);
+		ForgeSvcFile file = getLastestFile("1.12.2", modfile);
+		if (file != null) {
+			try {
+				print("downloading  " + pj.getName());
+				HttpHelper.readFileFromUrlToFolder(pj.getSlug(),file.getDownloadUrl(modID), "mods");
+				println("download finished");
+				return true;
+			} catch (MalformedURLException e) {
+				e.printStackTrace();
+			}
+		} else {
+			System.out.println("no file in server");
+		}
+		return false;
+	}
+
+	public ForgeSvcFile getLastestFile(String minecraftVer, CurseForgeModFile mod) {
+		String projectUrl = "https://addons-ecs.forgesvc.net/api/v2/addon/" + mod.getProjectID();
+		String jsonProject;
+		try {
+			jsonProject = HttpHelper.readStringFromUrl(projectUrl);
+			if(jsonProject.equals("error"))return null;
+		} catch (MalformedURLException e) {
+			e.printStackTrace();
+			return null;
+		}
+	
+		ForgeSvcEntry entry = gson.fromJson(jsonProject, ForgeSvcEntry.class);
+
+		for (ForgeSvcFile f : entry.getFiles()) {
+				if (f.getGameVersion().equals(minecraftVer)) {
+					return f;
+			}
+		}
+		return null;
+	}
+	
+	
+	
+
+}