/*
 *                 Sun Public License Notice
 *
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 *
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2000 Sun
 * Microsystems, Inc. All Rights Reserved.
 */

package org.netbeans.modules.javacvs.caching;
import java.io.*;
import java.util.*;
import java.beans.*;
import java.text.*;

import org.netbeans.lib.cvsclient.file.FileStatus;
import org.netbeans.modules.vcscore.cache.*;
import org.netbeans.modules.javacvs.commands.JavaCvsStatusManager;

/** File.
 *
 * @author Milos Kleint
 */
//-------------------------------------------
public class CvsCacheFile extends CacheFile {
    
    
    //-------------------------------------------
    public CvsCacheFile(String memberOfCache){
        super(memberOfCache, new CvsCacheFile.CvsPersistentData(false));
        setStatusNonModifying(JavaCvsStatusManager.LOCAL);
    }
    
    //-------------------------------------------
    public CvsCacheFile(String memberOfCache, String name){
        super(memberOfCache, name, new CvsCacheFile.CvsPersistentData(false));
        setStatusNonModifying(JavaCvsStatusManager.LOCAL);
    }
    
    CvsCacheFile(String memberOfCache, CacheFile.PersistentData data) {
        super(memberOfCache, data);
    }
    
    public void setLocal (boolean local) {
        ((CvsCacheFile.CvsPersistentData) getPersistentData()).setLocal(local);
    }

    public boolean isLocal () {
        return ((CvsCacheFile.CvsPersistentData) getPersistentData()).isLocal();
    }
    
    public static final CacheFile readFileCache(String line, String cacheName, java.io.File parent) {
        // need to know because the refreshing cache should not modify states and should add the file eveytime..
        boolean isJavaCvsCache = cacheName.equals(JavaCvsCache.JAVA_CACHE_NAME);
        
        StringTokenizer token = new StringTokenizer(line,"/", false); // NOI18N
        boolean newBehaviour = false;
        if (token.countTokens() >= 9) {
            newBehaviour = true;
            // NEW BEHAVIOUR.. NEW NUMBER OF TOKENS...
        }
        if (!line.startsWith("/")) { // NOI18N
            System.out.println("ERROR : Bad cache disk format (CvsCacheFile)"); // NOI18N
            return null;
        }
        if (token.countTokens() < 2) return null;
        String name = token.nextToken();
        CvsCacheFile newFile = new CvsCacheFile(cacheName, name);
        String status = token.nextToken().intern();
        boolean isNew = false;
        if (!new File(parent, name).exists()) { // not found == it's not on the local disk -> it's a shadow file
            isNew = true;
            // status AI - for all but removed and local change status to  NEEDS_CHECKOUT.
            // only to those that are in the JAVACVS cache.. thus the rela ones..
            // those that are created in the CacheUpdatingCommand don't count..
            if (isJavaCvsCache) {
                if (cacheName.equals(JavaCvsCache.JAVA_CACHE_NAME)) {
                    if (status.equals(JavaCvsStatusManager.LOCALLY_REMOVED)
                    || status.equals(JavaCvsStatusManager.LOCAL)
                    || status.equals(JavaCvsStatusManager.UNKNOWN)) {
                        newFile.setStatusNonModifying(status);
                    } else {
                        newFile.setStatusNonModifying(JavaCvsStatusManager.NEEDS_CHECKOUT);
                    }
                } else {
                    newFile.setStatusNonModifying(status);
                }
            } else {
                newFile.setStatusNonModifying(status);
            }
            
        } else {
            newFile.setStatusNonModifying(status);
        }
        if (newBehaviour) {
            String tokenStr = token.nextToken();
            newFile.setLocker(tokenStr.equals(" ") ? null : tokenStr.intern()); // NOI18N
            tokenStr = token.nextToken();
            newFile.setRevision(tokenStr.equals(" ") ? null : tokenStr.intern()); // NOI18N
            tokenStr = token.nextToken();
            newFile.setSticky(tokenStr.equals(" ") ? null : tokenStr.intern()); // NOI18N
            tokenStr = token.nextToken();
            newFile.setAttr(tokenStr.equals(" ") ? null : new String(tokenStr)); // NOI18N
            tokenStr = token.nextToken();
            int size = 0;
            try {
                size = Integer.parseInt(tokenStr);
            } catch (NumberFormatException exc) {
                size = 0;
            }
            newFile.setSize(size);
            tokenStr = token.nextToken();
            newFile.setDate(tokenStr.equals(" ") ? null : new String(tokenStr)); // NOI18N
            tokenStr = token.nextToken();
            newFile.setTime(tokenStr.equals(" ") ? null : new String(tokenStr)); // NOI18N
        } else {
            //OLD BEHAVIOUR...
            if (token.hasMoreTokens()) {
                String tokenStr = token.nextToken();
                newFile.setRevision(tokenStr.equals("") ? null : tokenStr.intern()); // NOI18N
            }
        }
        return newFile;
    }
    
    public static final CacheFile readFileCache(java.lang.String line, CvsCacheDir par) {
        // need to know because the refreshing cache should not modify states and should add the file eveytime..
        boolean isJavaCvsCache = par.getCacheName().equals(JavaCvsCache.JAVA_CACHE_NAME);
        
        StringTokenizer token = new StringTokenizer(line,"/", false); // NOI18N
        boolean newBehaviour = false;
        if (token.countTokens() >= 9) {
            newBehaviour = true;
            // NEW BEHAVIOUR.. NEW NUMBER OF TOKENS...
        }
        if (line.startsWith("D")) { // NOI18N
            String name = token.nextToken();
            name = token.nextToken();
            CvsCacheDir newFile = (CvsCacheDir)par.getSubDir(name);
            if (newFile == null) { // not found == it's not on the local disk -> it's a shadow file
                //                par.setStatus(JavaCvsStatusManager.NOT_IN_SYNCH);
                return newFile;
            }
            if (!token.hasMoreTokens()) return newFile;
            String stat = token.nextToken();
            newFile.setStatus(stat.intern());
            if (newBehaviour) {
                String tokenStr = token.nextToken();
                newFile.setLocker(tokenStr.equals(" ") ? null : tokenStr.intern()); // NOI18N
                tokenStr = token.nextToken();
                newFile.setRevision(tokenStr.equals(" ") ? null : tokenStr.intern()); // NOI18N
                tokenStr = token.nextToken();
                newFile.setSticky(tokenStr.equals(" ") ? null : tokenStr.intern()); // NOI18N
                tokenStr = token.nextToken();
                newFile.setAttr(tokenStr.equals(" ") ? null : new String(tokenStr)); // NOI18N
                tokenStr = token.nextToken();
                int size = 0;
                try {
                    size = Integer.parseInt(tokenStr);
                } catch (NumberFormatException exc) {
                    size = 0;
                }
                newFile.setSize(size);
                if (token.hasMoreTokens()) {
                    tokenStr = token.nextToken();
                    newFile.setDate(tokenStr.equals(" ") ? null : new String(tokenStr)); // NOI18N
                }
                if (token.hasMoreTokens()) {
                    tokenStr = token.nextToken();
                    newFile.setTime(tokenStr.equals(" ") ? null : new String(tokenStr)); // NOI18N
                }
                
            }
            return newFile;
        }
        if (!line.startsWith("/")) { // NOI18N
            System.out.println("ERROR : Bad cache disk format (CvsCacheFile)"); // NOI18N
            return null;
        }
        if (token.countTokens() < 2) return null;
        String name = token.nextToken();
        CvsCacheFile newFile = (CvsCacheFile)par.getFile(name);
        String status = token.nextToken().intern();
        boolean isNew = false;
        if (newFile == null) { // not found == it's not on the local disk -> it's a shadow file
            CvsCacheFile file = new CvsCacheFile(par.getCacheName(), name);
            isNew = true;
            newFile = file;
            // status AI - for all but removed and local change status to  NEEDS_CHECKOUT.
            // only to those that are in the JAVACVS cache.. thus the rela ones..
            // those that are created in the CacheUpdatingCommand don't count..
            if (isJavaCvsCache) {
                if (par.getCacheName().equals(JavaCvsCache.JAVA_CACHE_NAME)) {
                    if (status.equals(JavaCvsStatusManager.LOCALLY_REMOVED)
                    || status.equals(JavaCvsStatusManager.LOCAL)
                    || status.equals(JavaCvsStatusManager.UNKNOWN)) {
                        newFile.setStatusNonModifying(status);
                    } else {
                        newFile.setStatusNonModifying(JavaCvsStatusManager.NEEDS_CHECKOUT);
                    }
                } else {
                    newFile.setStatusNonModifying(status);
                }
            } else {
                newFile.setStatusNonModifying(status);
            }
            
        } else {
            newFile.setStatusNonModifying(status);
        }
        if (newBehaviour) {
            String tokenStr = token.nextToken();
            newFile.setLocker(tokenStr.equals(" ") ? null : tokenStr.intern()); // NOI18N
            tokenStr = token.nextToken();
            newFile.setRevision(tokenStr.equals(" ") ? null : tokenStr.intern()); // NOI18N
            tokenStr = token.nextToken();
            newFile.setSticky(tokenStr.equals(" ") ? null : tokenStr.intern()); // NOI18N
            tokenStr = token.nextToken();
            newFile.setAttr(tokenStr.equals(" ") ? null : new String(tokenStr)); // NOI18N
            tokenStr = token.nextToken();
            int size = 0;
            try {
                size = Integer.parseInt(tokenStr);
            } catch (NumberFormatException exc) {
                size = 0;
            }
            newFile.setSize(size);
            tokenStr = token.nextToken();
            newFile.setDate(tokenStr.equals(" ") ? null : new String(tokenStr)); // NOI18N
            tokenStr = token.nextToken();
            newFile.setTime(tokenStr.equals(" ") ? null : new String(tokenStr)); // NOI18N
        } else {
            //OLD BEHAVIOUR...
            if (token.hasMoreTokens()) {
                String tokenStr = token.nextToken();
                newFile.setRevision(tokenStr.equals("") ? null : tokenStr.intern()); // NOI18N
            }
        }
        if (!isJavaCvsCache || (isNew && 
            (newFile.getStatus().equals(JavaCvsStatusManager.NEEDS_CHECKOUT)
             || newFile.getStatus().equals(JavaCvsStatusManager.LOCALLY_REMOVED)))) {
//            if (par.getCacheName().equals(JavaCvsCache.JAVA_CACHE_NAME)) {
//                System.out.println("adding non-existent=" + newFile.getName());
            par.addFile(newFile, false);
            //par.setFirstTimer(true);
//            }
        }
        return newFile;
    }
    
    
    /** set the status..
     * @param stat any of the status constants in this class
     */
    public void setStatus (String stat) {
        String status = getStatus();
        //TODO the status changing logic move someplace else.
        //        if (status.equals(LOCAL)) return; // local files don't change status
        if (JavaCvsStatusManager.LOCALLY_ADDED.equals(status) && 
            JavaCvsStatusManager.LOCALLY_MODIFIED.equals(stat)) return; // for loc added files, ignore modified updates
        if (JavaCvsStatusManager.NEEDS_PATCH.equals(status) && 
            JavaCvsStatusManager.LOCALLY_MODIFIED.equals(stat)) {
            status = JavaCvsStatusManager.NEEDS_MERGE;
        } else {
            // TODO? other status logic to be added
            status = stat;
        }
        super.setStatus(status);
        //getParent().setModified(true);
    }
    
    /** does not set the setModified flag on the directory.. should be called
     * only when reading from disk cache
     * not modified -> read from disk, populated from local disk.
     */
    public void setStatusNonModifying(String stat) {
        setStatus(stat);
    }
    
    
    //-------------------------------------------
    public String toString(){
        return "CvsCacheFile["+ // NOI18N
        "name='"+getName()+"'"+ // NOI18N
        "]"; // NOI18N
    }
    
    protected static class CvsPersistentData extends PersistentData {
        
        public CvsPersistentData(boolean directory) {
            super(directory);
            this.setLocal(true);
            this.setStatus(null);
            setLocker(null);
            setRevision(null);
            setSticky(null);
            setAttr(null);
            setDate(null);
            setTime(null);
        }
        
        public String writeLineToDisk() {
            StringBuffer buff = new StringBuffer("/"); // NOI18N
            buff.append(getName());
            buff.append("/"); // NOI18N
            buff.append(getStatus());
            buff.append("/"); // NOI18N
            buff.append((getLocker() == null) ? " " : getLocker()); // NOI18N
            buff.append("/"); // NOI18N
            buff.append((getRevision() == null) ? " " : getRevision()); // NOI18N
            buff.append("/");  // NOI18N
            buff.append((getSticky() == null) ? " " : getSticky()); // NOI18N
            buff.append("/");  // NOI18N
            buff.append((getAttr() == null) ? " " : getAttr()); // NOI18N
            buff.append("/");  // NOI18N
            buff.append(getSize());
            buff.append("/");  // NOI18N
            buff.append((getDate() == null) ? " " : getDate()); // NOI18N
            buff.append("/");  // NOI18N
            buff.append((getTime() == null) ? " " : getTime()); // NOI18N
            
            //TODO
            return buff.toString();
        }
        
        /**
         * Subclasses need to implement this to store the data into disk cache.
         */
        protected void doWriteToDisk() throws IOException {
        }
        
    }
    
}