package de.tudarmstadt.informatik.hostage.protocol.cifs;

//import org.alfresco.config.ConfigElement;
import org.alfresco.jlan.server.NetworkServer;
import org.alfresco.jlan.server.SrvSession;
import org.alfresco.jlan.server.core.DeviceContext;
import org.alfresco.jlan.server.core.DeviceContextException;
import org.alfresco.jlan.server.filesys.DiskDeviceContext;
import org.alfresco.jlan.server.filesys.DiskInterface;
import org.alfresco.jlan.server.filesys.FileAttribute;
import org.alfresco.jlan.server.filesys.FileExistsException;
import org.alfresco.jlan.server.filesys.FileInfo;
import org.alfresco.jlan.server.filesys.FileName;
import org.alfresco.jlan.server.filesys.FileOpenParams;
import org.alfresco.jlan.server.filesys.FileStatus;
import org.alfresco.jlan.server.filesys.FileSystem;
import org.alfresco.jlan.server.filesys.NetworkFile;
import org.alfresco.jlan.server.filesys.SearchContext;
import org.alfresco.jlan.server.filesys.TreeConnection;
import org.alfresco.jlan.smb.server.disk.JavaNetworkFile;
import org.springframework.extensions.config.ConfigElement;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;

public class PseudoCIFSDiskDriver implements DiskInterface {

    private TreeConnection SMBTree;

    private static class FileNode {
        public String name;
        public int type;
        public int parent;

        public FileNode(String name, int type, int parent){
            this.name = name;
            this.type = type;
            this.parent = parent;
        }
    }

    private FileNode[] filesystem = new FileNode[]{
        new FileNode("/", FileAttribute.Directory, 0),
            new FileNode("/testDir", FileAttribute.Directory, "/".hashCode()),
            new FileNode("/testDir2", FileAttribute.Directory, "/".hashCode()),
            new FileNode("/muhahaha.txt", 0, "/".hashCode())
    };

    private static class PseudoNetworkFile extends NetworkFile {
        public PseudoNetworkFile(String name){
            super(name);
            setFileSize(12);
            setModifyDate(System.currentTimeMillis());
            setCreationDate(System.currentTimeMillis());
        }

        @Override
        public void openFile(boolean createFlag) throws IOException {
            setClosed(false);
        }

        @Override
        public int readFile(byte[] buf, int len, int pos, long fileOff) throws IOException {
            return 0;
        }

        @Override
        public void writeFile(byte[] buf, int len, int pos, long fileOff) throws IOException {

        }

        @Override
        public long seekFile(long pos, int typ) throws IOException {
            return 0;
        }

        @Override
        public void flushFile() throws IOException {

        }

        @Override
        public void truncateFile(long siz) throws IOException {

        }

        @Override
        public void closeFile() throws IOException {
            setClosed(true);
        }
    }

    @Override
    public void closeFile(SrvSession srvSession, TreeConnection treeConnection, NetworkFile networkFile) throws IOException {
        networkFile.closeFile();
    }

    @Override
    public void createDirectory(SrvSession srvSession, TreeConnection treeConnection, FileOpenParams fileOpenParams) throws IOException {
    }

    @Override
    public NetworkFile createFile(SrvSession srvSession, TreeConnection treeConnection, FileOpenParams fileOpenParams) throws IOException {
        throw new FileExistsException();
    }

    @Override
    public void deleteDirectory(SrvSession srvSession, TreeConnection treeConnection, String s) throws IOException {

    }

    @Override
    public void deleteFile(SrvSession srvSession, TreeConnection treeConnection, String s) throws IOException {

    }

    @Override
    public int fileExists(SrvSession srvSession, TreeConnection treeConnection, String s) {
        DeviceContext ctx = treeConnection.getContext();
        String filename = FileName.buildPath(ctx.getDeviceName(), s, null, File.separatorChar);

        FileNode fileNode = getFileNode(filename);

        if(fileNode == null) return FileStatus.NotExist;

        if(fileNode.type == FileAttribute.Directory){
            return FileStatus.DirectoryExists;
        } else {
            return FileStatus.FileExists;
        }
    }

    @Override
    public void flushFile(SrvSession srvSession, TreeConnection treeConnection, NetworkFile networkFile) throws IOException {

    }

    private FileNode getFileNode(String name){
        for(FileNode node: this.filesystem){
            if(node.name.equals(name)) return node;
        }

        return null;
    }

    @Override
    public FileInfo getFileInformation(SrvSession srvSession, TreeConnection treeConnection, String name) throws IOException {
        //String path = FileName.buildPath(treeConnection.getContext().getDeviceName(), "/", "jlan", java.io.File.separatorChar);

        //File file = new File(treeConnection.getContext().getDeviceName(), "jlan");

        //int fattr = FileAttribute.ReadOnly;

        String path = FileName.buildPath(treeConnection.getContext().getDeviceName(), name, null, java.io.File.separatorChar);
        FileNode fileNode = getFileNode(path);

        if(fileNode == null){
            return null;
        }

        System.out.println("PATH::::"+path);
        int fattr = fileNode.type + FileAttribute.ReadOnly;

        FileInfo finfo = new FileInfo(path, 0, fattr);
        long fdate = System.currentTimeMillis();
        finfo.setModifyDateTime(fdate);
        finfo.setCreationDateTime(fdate - 1000);
        finfo.setChangeDateTime(fdate);
        finfo.setDirectoryId(fileNode.parent);
        finfo.setFileId(fileNode.name.hashCode());

        return finfo;
    }

    @Override
    public boolean isReadOnly(SrvSession srvSession, DeviceContext deviceContext) throws IOException {
        return true;
    }

    @Override
    public NetworkFile openFile(SrvSession srvSession, TreeConnection treeConnection, FileOpenParams fileOpenParams) throws IOException {
        System.out.println("openFile method::::"+srvSession + " - " + treeConnection + " - " + fileOpenParams);
        String fname = FileName.buildPath(treeConnection.getContext().getDeviceName(), fileOpenParams.getPath(), null, java.io.File.separatorChar);

        FileNode fileNode = getFileNode(fname);
        if(fileNode == null) return null;

        String[] path = fileNode.name.split("" + java.io.File.separatorChar);

        NetworkFile netFile = new PseudoNetworkFile(path.length == 0 ? "/" : path[path.length - 1]);
        netFile.setFullName(fileNode.name);
        netFile.setDirectoryId(fileNode.parent);
        netFile.setFileId(fileNode.name.hashCode());
        netFile.setAttributes(fileNode.type);
        netFile.setGrantedAccess(NetworkFile.READONLY);
        netFile.setAttributes(FileAttribute.ReadOnly);

        return netFile;
    }

    @Override
    public int readFile(SrvSession srvSession, TreeConnection treeConnection, NetworkFile networkFile, byte[] bytes, int i, int i2, long l) throws IOException {
        System.out.println("readFile method::::"+srvSession + " - " + treeConnection + " - "+networkFile);
        return 0;
    }

    @Override
    public void renameFile(SrvSession srvSession, TreeConnection treeConnection, String s, String s2) throws IOException {

    }

    @Override
    public long seekFile(SrvSession srvSession, TreeConnection treeConnection, NetworkFile networkFile, long l, int i) throws IOException {
        System.out.println("seekFile method::::"+srvSession + " - " + treeConnection + " - "+networkFile);
        return 0;
    }

    @Override
    public void setFileInformation(SrvSession srvSession, TreeConnection treeConnection, String s, FileInfo fileInfo) throws IOException {

    }

    @Override
    public SearchContext startSearch(SrvSession srvSession, TreeConnection treeConnection, String s, int i) throws FileNotFoundException {
        System.out.println("Start search!!!");
        throw new FileNotFoundException();
    }

    @Override
    public void truncateFile(SrvSession srvSession, TreeConnection treeConnection, NetworkFile networkFile, long l) throws IOException {

    }

    @Override
    public int writeFile(SrvSession srvSession, TreeConnection treeConnection, NetworkFile networkFile, byte[] bytes, int i, int i2, long l) throws IOException {
        return 0;
    }

    @Override
    public DeviceContext createContext(String s, ConfigElement configElement) throws DeviceContextException {
        DiskDeviceContext ctx = new DiskDeviceContext("/");
        ctx.setFilesystemAttributes(FileSystem.CasePreservedNames + FileSystem.UnicodeOnDisk);
        ctx.setAvailable(true);
        return ctx;
    }


    @Override
    public void treeOpened(SrvSession srvSession, TreeConnection treeConnection) {
        System.out.println("treeOpened method::::"+srvSession + " - " + treeConnection);
        System.out.println("treeOpened method::::"+treeConnection.getContext().getDeviceName());
    }

    @Override
    public void treeClosed(SrvSession srvSession, TreeConnection treeConnection) {

    }
}