/*

Copyright 2008-2011 Clipperz Srl

This file is part of Clipperz's Javascript Crypto Library.
Javascript Crypto Library provides web developers with an extensive
and efficient set of cryptographic functions. The library aims to
obtain maximum execution speed while preserving modularity and
reusability.
For further information about its features and functionalities please
refer to http://www.clipperz.com

* Javascript Crypto Library is free software: you can redistribute
  it and/or modify it under the terms of the GNU Affero General Public
  License as published by the Free Software Foundation, either version
  3 of the License, or (at your option) any later version.

* Javascript Crypto Library is distributed in the hope that it will
  be useful, but WITHOUT ANY WARRANTY; without even the implied
  warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the GNU Affero General Public License for more details.

* You should have received a copy of the GNU Affero General Public
  License along with Javascript Crypto Library.  If not, see
  <http://www.gnu.org/licenses/>.

*/

if (typeof(Clipperz) == 'undefined') { Clipperz = {}; }
if (typeof(Clipperz.PM) == 'undefined') { Clipperz.PM = {}; }
if (typeof(Clipperz.PM.DataModel) == 'undefined') { Clipperz.PM.DataModel = {}; }


//#############################################################################

Clipperz.PM.DataModel.RecordVersion = function(aRecord, args) {
	args = args || {};

	this._record = aRecord;

	this._reference = args.reference || Clipperz.PM.Crypto.randomKey();
	this._version = args.version || Clipperz.PM.Crypto.encryptingFunctions.currentVersion;
	this._key = args.key || Clipperz.PM.Crypto.randomKey();;

	this._previousVersion = args.previousVersion || null;
	this._previousVersionKey = args.previousVersionKey || null;

	this.setIsBrandNew(args.reference == null);

	if (this.isBrandNew()) {
		this._fields = {};

		this.setShouldLoadData(false);
		this.setShouldDecryptData(false);
		this.setShouldProcessData(false);
	} else {
		if (typeof(args.fields) != 'undefined') {
			this.processFieldData(args.fields);
			
			this.setShouldLoadData(false);
			this.setShouldDecryptData(false);
			this.setShouldProcessData(false);
		} else {
			 if (typeof(args.data) != 'undefined') {
				this.setShouldLoadData(false);
			} else {
				this.setShouldLoadData(true);
			}
			this.setShouldDecryptData(true);
			this.setShouldProcessData(true);
		}
	}

	this._serverData = args.data;
	this._decryptedData = null;

	return this;
}

Clipperz.PM.DataModel.RecordVersion.prototype = MochiKit.Base.update(null, {

	'toString': function() {
		return "RecordVersion";
	},

	//-------------------------------------------------------------------------

	'record': function() {
		return this._record;
	},
	
	//-------------------------------------------------------------------------

	'reference': function() {
		return this._reference;
	},
	
	'setReference': function(aValue) {
		this._reference = aValue;
	},
	
	//-------------------------------------------------------------------------

	'key': function() {
//MochiKit.Logging.logDebug(">>> RecordVersion.key");
//MochiKit.Logging.logDebug("--- RecordVersion.key - " + this._key);
		return this._key;
	},
	
	'setKey': function(aValue) {
		this._key = aValue;
	},
	
	//-------------------------------------------------------------------------

	'serverData': function() {
		return this._serverData;
	},
	
	'setServerData': function(aValue) {
		this._serverData = aValue;
		this.setShouldLoadData(false);
		return aValue;
	},
	
	//-------------------------------------------------------------------------

	'decryptedData': function() {
//MochiKit.Logging.logDebug(">>> RecordVersion.decryptedData: " + (this._decryptedData ? Clipperz.Base.serializeJSON(aValue) : "null"));
		return this._decryptedData;
	},
	
	'setDecryptedData': function(aValue) {
//MochiKit.Logging.logDebug(">>> RecordVersion.setDecryptedData: " + Clipperz.Base.serializeJSON(aValue));
		this._decryptedData = aValue;
		this.setShouldDecryptData(false);
		return aValue;
	},
	
	//-------------------------------------------------------------------------

	'version': function() {
		return this._version;
	},

	//-------------------------------------------------------------------------

	'isBrandNew': function() {
		return this._isBrandNew;
	},

	'setIsBrandNew': function(aValue) {
		this._isBrandNew = aValue;
	},
	
	//-------------------------------------------------------------------------

	'fields': function() {
		return this._fields;
	},

	'addField': function(aField) {
		this.fields()[aField.key()] = aField;
	},

	'addNewField': function() {
		var	newRecordField;
		
		newRecordField = new Clipperz.PM.DataModel.RecordField({recordVersion:this});
		this.addField(newRecordField);
		
		return newRecordField;
	},
	
	'fieldWithName': function(aValue) {
		var	result;
		var fieldValues;
		var i,c;
		
		result = null;
		fieldValues = MochiKit.Base.values(this.fields());
		c = fieldValues.length;
		for (i=0; (i<c) && (result == null); i++) {
			var	currentField;
			
			currentField = fieldValues[i];
			if (currentField.label() == aValue) {
				result = currentField;
			}
		}

		return result;
	},
	
	//-------------------------------------------------------------------------

	'shouldLoadData': function() {
		return this._shouldLoadData;
	},

	'setShouldLoadData': function(aValue) {
		this._shouldLoadData = aValue;
	},
	
	//-------------------------------------------------------------------------

	'shouldDecryptData': function() {
		return this._shouldDecryptData;
	},

	'setShouldDecryptData': function(aValue) {
		this._shouldDecryptData = aValue;
	},
	
	//-------------------------------------------------------------------------

	'shouldProcessData': function() {
		return this._shouldProcessData;
	},
	
	'setShouldProcessData': function(aValue) {
		this._shouldProcessData = aValue;
	},
	
	//-------------------------------------------------------------------------

	'deferredData': function() {
		var deferredResult;
		
//MochiKit.Logging.logDebug(">>> RecordVersion.deferredData - this: " + this);
		deferredResult = new MochiKit.Async.Deferred();
		deferredResult.addCallback(MochiKit.Base.method(this, 'loadData'));
		deferredResult.addCallback(MochiKit.Base.method(this, 'decryptData'));
		deferredResult.addCallback(MochiKit.Base.method(this, 'processData'));
		deferredResult.callback();
//MochiKit.Logging.logDebug("<<< RecordVersion.deferredData");
		
		return deferredResult;
	},
	
	//-------------------------------------------------------------------------
	
	'loadData': function() {
		var result;
		
//MochiKit.Logging.logDebug(">>> RecordVersion.loadData - this: " + this);
		if (this.shouldLoadData()) {
			var deferredResult;

			alert("ERROR: this should have not happened yet!");
//MochiKit.Logging.logDebug("--- RecordVersion.loadData - 1");
			deferredResult = new MochiKit.Async.Deferred();
//MochiKit.Logging.logDebug("--- RecordVersion.loadData - 2");
			deferredResult.addCallback(MochiKit.Base.method(this, 'notify'), 'loadingRecordVersionData');
//MochiKit.Logging.logDebug("--- RecordVersion.loadData - 3");
			deferredResult.addCallback(MochiKit.Base.method(this.user().connection(), 'message'), 'getRecordVersionDetail', {reference: this.reference()});
//MochiKit.Logging.logDebug("--- RecordVersion.loadData - 4");
			deferredResult.addCallback(MochiKit.Base.method(this, 'setServerData'));
//MochiKit.Logging.logDebug("--- RecordVersion.loadData - 5");
			deferredResult.callback();
//MochiKit.Logging.logDebug("--- RecordVersion.loadData - 6");
			result = deferredResult;
//MochiKit.Logging.logDebug("--- RecordVersion.loadData - 7");
		} else {
//MochiKit.Logging.logDebug("--- RecordVersion.loadData - 8");
			result = MochiKit.Async.succeed(this.serverData());
//MochiKit.Logging.logDebug("--- RecordVersion.loadData - 9");
		}
//MochiKit.Logging.logDebug("<<< RecordVersion.loadData");

		return result;
	},

	//-------------------------------------------------------------------------

	'decryptData': function(anEncryptedData) {
		var result;
		
//MochiKit.Logging.logDebug(">>> RecordVersion.decryptData - this: " + this + " (" + anEncryptedData + ")");
		if (this.shouldDecryptData()) {
			var deferredResult;
			
//MochiKit.Logging.logDebug("--- RecordVersion.decryptData - 1");
			deferredResult = new MochiKit.Async.Deferred();
//MochiKit.Logging.logDebug("--- RecordVersion.decryptData - 2");
//deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("RecordVersion.decryptData 1: " + res); return res;});
			deferredResult.addCallback(MochiKit.Base.method(this, 'notify'), 'decryptingRecordVersionData');
//MochiKit.Logging.logDebug("--- RecordVersion.decryptData - 3");
//deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("RecordVersion.decryptData 2: " + res); return res;});
			deferredResult.addCallback(Clipperz.PM.Crypto.deferredDecrypt, this.key(), anEncryptedData, this.version());
//MochiKit.Logging.logDebug("--- RecordVersion.decryptData - 4");
//deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("RecordVersion.decryptData 3: " + res); return res;});
//MochiKit.Logging.logDebug("--- RecordVersion.decryptData - 5");
//deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("RecordVersion.decryptData 4: " + res); return res;});
			deferredResult.addCallback(MochiKit.Base.method(this, 'setDecryptedData'));
//MochiKit.Logging.logDebug("--- RecordVersion.decryptData - 6");
//deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("RecordVersion.decryptData 5: " + res); return res;});
			deferredResult.callback();
//MochiKit.Logging.logDebug("--- RecordVersion.decryptData - 7");
			result = deferredResult;
//MochiKit.Logging.logDebug("--- RecordVersion.decryptData - 8");
		} else {
//MochiKit.Logging.logDebug("--- RecordVersion.decryptData - 9");
			result = MochiKit.Async.succeed(this.decryptedData());
//MochiKit.Logging.logDebug("--- RecordVersion.decryptData - 10");
		}
//MochiKit.Logging.logDebug("<<< RecordVersion.decryptData");

		return result;
	},

	//-------------------------------------------------------------------------

	'processFieldData': function(someValues) {
		var fieldValues;
		
		this._fields = {};

		if (typeof(someValues) == 'undefined') {
			fieldValues = {};
		} else {
			fieldValues = someValues;
		}

		if (fieldValues.constructor == Array) {
			var i, c;
			c = fieldValues.length;
			for (i=0; i<c; i++) {
				var newRecordField;
				var currentFieldValues;
		
				currentFieldValues = fieldValues[i];
				currentFieldValues['recordVersion'] = this;
				newRecordField = new Clipperz.PM.DataModel.RecordField(currentFieldValues);
				this._fields[newRecordField.key()] = newRecordField;
			}
			
		} else {
			var fieldKey;
			
			for (fieldKey in fieldValues) {
				var newRecordField;
				var currentFieldValues;
		
				currentFieldValues = fieldValues[fieldKey];
				currentFieldValues['key'] = fieldKey;
				currentFieldValues['recordVersion'] = this;
				newRecordField = new Clipperz.PM.DataModel.RecordField(currentFieldValues);
				this._fields[fieldKey] = newRecordField;
			}
		}
		
	},
	
	'processData': function(someValues) {
		if (this.shouldProcessData()) {
			this.processFieldData(someValues.fields);
			this.setShouldProcessData(false);
		}
		
		this.notify('recordVersionDataReady');
		
		return this;
	},

	//-------------------------------------------------------------------------

	'notify': function(aValue) {
		Clipperz.NotificationCenter.notify(this, aValue);
	},
	
	//-------------------------------------------------------------------------

	'removeField': function(aField) {
		delete this.fields()[aField.key()];
	},

	//-------------------------------------------------------------------------

	'previousVersion': function() {
		return this._previousVersion;
	},

	'setPreviousVersion': function(aValue) {
		this._previousVersion = aValue;
	},
	
	//-------------------------------------------------------------------------
	
	'previousVersionKey': function() {
		return this._previousVersionKey;
	},
	
	'setPreviousVersionKey': function(aValue) {
		this._previousVersionKey = aValue;
	},
	
	//-------------------------------------------------------------------------

	'serializedData': function() {
		var result;
		var	fieldKey;

//MochiKit.Logging.logDebug(">>> RecordVersion.serializedData");
		result = {
			fields: {}
		};
//MochiKit.Logging.logDebug("--- RecordVersion.serializedData - 1");
		
		for (fieldKey in this.fields()) {
//MochiKit.Logging.logDebug("--- RecordVersion.serializedData - 2");
			result.fields[fieldKey] = this.fields()[fieldKey].serializeData();
//MochiKit.Logging.logDebug("--- RecordVersion.serializedData - 3");
		}
//MochiKit.Logging.logDebug("--- RecordVersion.serializedData - 4");
//MochiKit.Logging.logDebug("<<< RecordVersion.serializedData: " + Clipperz.Base.serializeJSON(result));

		return result;
	},

	'currentDataSnapshot': function() {
		var result;

		result = this.serializedData();
		result['version'] = this.version();
		result['reference'] = this.reference();
		result['previousVersionKey'] = this.previousVersionKey();
		
		return result;
	},
	
	//-------------------------------------------------------------------------

	'encryptedData': function() {
		var deferredResult;
		var result;
		
//MochiKit.Logging.logDebug(">>> RecordVersion.encryptedData - " + this);
		result = {};
		deferredResult = new MochiKit.Async.Deferred();
//MochiKit.Logging.logDebug("--- RecordVersion.encryptedData - 1");
//deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("RecordVersion.encryptedData - 1: " + res); return res;});
		deferredResult.addCallback(function(aResult, aRecordVersion) {
			aResult['reference'] = aRecordVersion.reference();
			aResult['recordReference'] = aRecordVersion.record().reference();	// TODO - this seems to be completely useless
			return aResult;
		}, result, this);
//MochiKit.Logging.logDebug("--- RecordVersion.encryptedData - 2");
//deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("RecordVersion.encryptedData - 2: " + res); return res;});
		deferredResult.addCallback(Clipperz.PM.Crypto.deferredEncryptWithCurrentVersion, this.key(), this.serializedData());
//deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("RecordVersion.encryptedData - 3: " + res); return res;});
		deferredResult.addCallback(function(aResult, res) {
			aResult['data'] = res;
			return aResult;
		}, result);
//MochiKit.Logging.logDebug("--- RecordVersion.encryptedData - 3");
//deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("RecordVersion.encryptedData - 4: " + res); return res;});
		deferredResult.addCallback(function(aResult) {
			aResult['version'] = Clipperz.PM.Crypto.encryptingFunctions.currentVersion;
			return aResult;
		}, result);
//MochiKit.Logging.logDebug("--- RecordVersion.encryptedData - 4");
		if (this.previousVersion() != null) {
//MochiKit.Logging.logDebug("--- RecordVersion.encryptedData - 5");
//deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("RecordVersion.encryptedData - 5: " + res); return res;});
			deferredResult.addCallback(function(aResult, aRecordVersion) {
				aResult['previousVersion'] = aRecordVersion.previousVersion();
				return aResult;
			}, result, this);
//MochiKit.Logging.logDebug("--- RecordVersion.encryptedData - 6");
//deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("RecordVersion.encryptedData - 6: " + res); return res;});
			deferredResult.addCallback(Clipperz.PM.Crypto.deferredEncryptWithCurrentVersion, this.key(), this.previousVersionKey());
//deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("RecordVersion.encryptedData - 7: " + res); return res;});
			deferredResult.addCallback(function(aResult, res) {
				aResult['previousVersionKey'] = res;
				return aResult;
			}, result);
//deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("RecordVersion.encryptedData - 8: " + res); return res;});
//MochiKit.Logging.logDebug("--- RecordVersion.encryptedData - 7");
		} else {
//MochiKit.Logging.logDebug("--- RecordVersion.encryptedData - 8");
//deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("RecordVersion.encryptedData - 9: " + res); return res;});
			deferredResult.addCallback(function(aResult) {
				aResult['previousVersionKey'] = Clipperz.PM.Crypto.nullValue;
				return aResult;
			}, result);
//MochiKit.Logging.logDebug("--- RecordVersion.encryptedData - 9");
//deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("RecordVersion.encryptedData - 10: " + res); return res;});
		};
//deferredResult.addBoth(function(res) {MochiKit.Logging.logDebug("RecordVersion.encryptedData - 11: " + res); return res;});
		deferredResult.callback();
//MochiKit.Logging.logDebug("<<< RecordVersion.encryptedData");
		
		return deferredResult;
	},

	//-------------------------------------------------------------------------

	'createNewVersion': function() {
		if (this.record().isBrandNew() == false) {
			this.setPreviousVersion(this.reference());
			this.setPreviousVersionKey(this.key());

			this.setReference(Clipperz.PM.Crypto.randomKey());
			this.setKey(Clipperz.PM.Crypto.randomKey());
		}
	},
	
	//-------------------------------------------------------------------------
/*
	'shouldLoadData': function() {
		return ((this.data() == null) && (this.isBrandNew() === false));
	},
	
	'loadData': function() {
//MochiKit.Logging.logDebug(">>> Record.loadData (" + this.label() + ")");
//		if (this.shouldLoadData()) {
//			this.user().connection().message(	'getRecordDetail',
//												{recordReference: this.reference()},
//												{	callback:MochiKit.Base.bind(this.loadDataCallback, this),
//													errorHandler:Clipperz.PM.defaultErrorHandler	});		
//		} else {
//			this.notify('loadDataDone');
//		}
	},

	'loadDataCallback': function() {
MochiKit.Logging.logDebug("RecordVersion.loadDataCallback: " + Clipperz.Base.serializeJSON(arguments));
	},
*/
	//-------------------------------------------------------------------------
	__syntaxFix__: "syntax fix"
	
});