/*******************************************************************************
 * Copyright 2017 The MITRE Corporation
 *   and the MIT Internet Trust Consortium
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/

var AccessTokenModel = Backbone.Model.extend({
	idAttribute: 'id',

	defaults:{
		id:null,
		value:null,
		refreshTokenId:null,
		scopes:[],
		clientId:null,
		userId:null,
		expiration:null
	},
	
	urlRoot: 'api/tokens/access'
});

var AccessTokenCollection = Backbone.Collection.extend({
	idAttribute: 'id',
	
	model: AccessTokenModel,
	
	url: 'api/tokens/access'
	
});

var AccessTokenView = Backbone.View.extend({
	
	tagName: 'tr',
	
    initialize:function (options) {
    	this.options = options;

        if (!this.template) {
            this.template = _.template($('#tmpl-access-token').html());
        }

        if (!this.scopeTemplate) {
        	this.scopeTemplate = _.template($('#tmpl-scope-list').html());
        }

        if (!this.moreInfoTemplate) {
        	this.moreInfoTemplate = _.template($('#tmpl-client-more-info-block').html());
        }

        this.model.bind('change', this.render, this);
        
    },
    
    events: {
		'click .btn-delete':'deleteToken',
		'click .token-substring':'showTokenValue',
		'click .toggleMoreInformation': 'toggleMoreInformation'
	},
	
    render:function (eventName) {
    	
		var expirationDate = this.model.get("expiration");

		if (expirationDate == null) {
			expirationDate = "Never";
		} else if (!moment(expirationDate).isValid()) {
			expirationDate = "Unknown";
		} else {
			expirationDate = moment(expirationDate).calendar();
		}
    	
		var json = {token: this.model.toJSON(), client: this.options.client.toJSON(), formattedExpiration: expirationDate};

		this.$el.html(this.template(json));

		// hide full value
    	$('.token-full', this.el).hide();
		
		// show scopes
        $('.scope-list', this.el).html(this.scopeTemplate({scopes: this.model.get('scopes'), systemScopes: this.options.systemScopeList}));	
		
        $('.client-more-info-block', this.el).html(this.moreInfoTemplate({client: this.options.client.toJSON()}));

        $(this.el).i18n();
        return this;
    },
    
    deleteToken:function (e) {
    	e.preventDefault();

        if (confirm($.t("token.token-table.confirm"))) {
        	
            var _self = this;

            this.model.destroy({
            	dataType: false, processData: false,
                success:function () {
                	
                    _self.$el.fadeTo("fast", 0.00, function () { //fade
                        $(this).slideUp("fast", function () { //slide up
                            $(this).remove(); //then remove from the DOM
                            // refresh the table in case we removed an id token, too
                            _self.parentView.refreshTable();
                        });
                    });
                },
            	error:app.errorHandlerView.handleError()
            });

            this.parentView.delegateEvents();
        }

        return false;
    },
    
	toggleMoreInformation:function(e) {
		e.preventDefault();
		if ($('.moreInformation', this.el).is(':visible')) {
			// hide it
			$('.moreInformation', this.el).hide('fast');
			$('.toggleMoreInformation i', this.el).attr('class', 'icon-chevron-right');
			$('.moreInformationContainer', this.el).removeClass('alert').removeClass('alert-info').addClass('muted');
		
		} else {
			// show it
			$('.moreInformation', this.el).show('fast');
			$('.toggleMoreInformation i', this.el).attr('class', 'icon-chevron-down');
			$('.moreInformationContainer', this.el).addClass('alert').addClass('alert-info').removeClass('muted');
		}
	},

	close:function () {
        $(this.el).unbind();
        $(this.el).empty();
    },
    
    showTokenValue:function (e) {
    	e.preventDefault();
    	$('.token-substring', this.el).hide();
    	$('.token-full', this.el).show();
    }
});

var RefreshTokenModel = Backbone.Model.extend({
	idAttribute: 'id',

	defaults:{
		id:null,
		value:null,
		scopes:[],
		clientId:null,
		userId:null,
		expiration:null
	},
	
	urlRoot: 'api/tokens/refresh'
});

var RefreshTokenCollection = Backbone.Collection.extend({
	idAttribute: 'id',
	
	model: RefreshTokenModel,
	
	url: 'api/tokens/refresh'
	
});

var RefreshTokenView = Backbone.View.extend({
	
	tagName: 'tr',
	
    initialize:function (options) {
    	this.options = options;

        if (!this.template) {
            this.template = _.template($('#tmpl-refresh-token').html());
        }

        if (!this.scopeTemplate) {
        	this.scopeTemplate = _.template($('#tmpl-scope-list').html());
        }

        if (!this.moreInfoTemplate) {
        	this.moreInfoTemplate = _.template($('#tmpl-client-more-info-block').html());
        }

        this.model.bind('change', this.render, this);
        
    },
    
    events: {
		'click .btn-delete':'deleteToken',
		'click .token-substring':'showTokenValue',
		'click .toggleMoreInformation': 'toggleMoreInformation'
	},
	
    render:function (eventName) {
    	
		var expirationDate = this.model.get("expiration");

		if (expirationDate == null) {
			expirationDate = "Never";
		} else if (!moment(expirationDate).isValid()) {
			expirationDate = "Unknown";
		} else {
			expirationDate = moment(expirationDate).calendar();
		}
    	
		var json = {token: this.model.toJSON(), client: this.options.client.toJSON(), formattedExpiration: expirationDate, accessTokenCount: this.options.accessTokenCount};

		this.$el.html(this.template(json));

		// hide full value
    	$('.token-full', this.el).hide();
		
		// show scopes
        $('.scope-list', this.el).html(this.scopeTemplate({scopes: this.model.get('scopes'), systemScopes: this.options.systemScopeList}));	
		
        $('.client-more-info-block', this.el).html(this.moreInfoTemplate({client: this.options.client.toJSON()}));
        
        $(this.el).i18n();
        return this;

    },
    
    deleteToken:function (e) {
    	e.preventDefault();

        if (confirm($.t('token.token-table.confirm-refresh'))) {
        	
            var _self = this;

            this.model.destroy({
            	dataType: false, processData: false,
                success:function () {
                	
                    _self.$el.fadeTo("fast", 0.00, function () { //fade
                        $(this).slideUp("fast", function () { //slide up
                            $(this).remove(); //then remove from the DOM
                            // refresh the table in case the access tokens have changed, too
                            _self.parentView.refreshTable();
                        });
                    });
                },
            	error:app.errorHandlerView.handleError()
            });

            _self.parentView.delegateEvents();
        }

        return false;
    },
    
	toggleMoreInformation:function(e) {
		e.preventDefault();
		if ($('.moreInformation', this.el).is(':visible')) {
			// hide it
			$('.moreInformation', this.el).hide('fast');
			$('.toggleMoreInformation i', this.el).attr('class', 'icon-chevron-right');
			$('.moreInformationContainer', this.el).removeClass('alert').removeClass('alert-info').addClass('muted');
		} else {
			// show it
			$('.moreInformation', this.el).show('fast');
			$('.toggleMoreInformation i', this.el).attr('class', 'icon-chevron-down');
			$('.moreInformationContainer', this.el).addClass('alert').addClass('alert-info').removeClass('muted');
		}

	},

	close:function () {
        $(this.el).unbind();
        $(this.el).empty();
    },
    
    showTokenValue:function (e) {
    	e.preventDefault();
    	$('.token-substring', this.el).hide();
    	$('.token-full', this.el).show();
    }
});

var TokenListView = Backbone.View.extend({
	tagName: 'span',
	
	initialize:function(options) {
    	this.options = options;
	},
	
	events:{
		"click .refresh-table":"refreshTable",
        'page .paginator-access':'changePageAccess',
        'page .paginator-refresh':'changePageRefresh'
	},

    load:function(callback) {
    	if (this.model.access.isFetched &&
    			this.model.refresh.isFetched &&
    			this.options.clientList.isFetched &&
    			this.options.systemScopeList.isFetched) {
    		callback();
    		return;
    	}

    	$('#loadingbox').sheet('show');
    	$('#loading').html(
                '<span class="label" id="loading-access">' + $.t('token.token-table.access-tokens') + '</span> ' +
    			'<span class="label" id="loading-refresh">' + $.t('token.token-table.refresh-tokens') + '</span> ' +
                '<span class="label" id="loading-clients">' + $.t('common.clients') + '</span> ' +
                '<span class="label" id="loading-scopes">' + $.t('common.scopes') + '</span> '
    			);

    	$.when(this.model.access.fetchIfNeeded({success:function(e) {$('#loading-access').addClass('label-success');}, error: app.errorHandlerView.handleError()}),
    			this.model.refresh.fetchIfNeeded({success:function(e) {$('#loading-refresh').addClass('label-success');}, error: app.errorHandlerView.handleError()}),
    			this.options.clientList.fetchIfNeeded({success:function(e) {$('#loading-clients').addClass('label-success');}, error: app.errorHandlerView.handleError()}),
    			this.options.systemScopeList.fetchIfNeeded({success:function(e) {$('#loading-scopes').addClass('label-success');}, error: app.errorHandlerView.handleError()}))
    			.done(function() {
    	    		$('#loadingbox').sheet('hide');
    	    		callback();
    	    	});
    	
    },

	changePageAccess:function(event, num) {
		$('.paginator-access', this.el).bootpag({page: num});
		$('#access-token-table tbody tr', this.el).each(function(index, element) {
			if (Math.ceil((index + 1) / 10) != num) {
            	$(element).hide();
            } else {
            	$(element).show();
            }
		});
	},
	
	changePageRefresh:function(event, num) {
		$('.paginator-refresh', this.el).bootpag({page: num});
		$('#refresh-token-table tbody tr', this.el).each(function(index, element) {
			if (Math.ceil((index + 1) / 10) != num) {
            	$(element).hide();
            } else {
            	$(element).show();
            }
		});
	},
	
    refreshTable:function(e) {
    	$('#loadingbox').sheet('show');
    	$('#loading').html(
                '<span class="label" id="loading-access">' + $.t('token.token-table.access-tokens') + '</span> ' +
                '<span class="label" id="loading-refresh">' + $.t('token.token-table.refresh-tokens') + '</span> ' +
                '<span class="label" id="loading-clients">' + $.t('common.clients') + '</span> ' +
                '<span class="label" id="loading-scopes">' + $.t('common.scopes') + '</span> '
    			);
    	var _self = this;
    	$.when(this.model.access.fetch({success:function(e) {$('#loading-access').addClass('label-success');}, error: app.errorHandlerView.handleError()}),
    			this.model.refresh.fetch({success:function(e) {$('#loading-refresh').addClass('label-success');}, error: app.errorHandlerView.handleError()}),
    			this.options.clientList.fetch({success:function(e) {$('#loading-clients').addClass('label-success');}, error: app.errorHandlerView.handleError()}),
    			this.options.systemScopeList.fetch({success:function(e) {$('#loading-scopes').addClass('label-success');}, error: app.errorHandlerView.handleError()}))
    			.done(function(){
    				_self.render();
    	    		$('#loadingbox').sheet('hide');
    			});
	},
	
	togglePlaceholder:function() {
		if (this.model.access.length > 0) {
			$('#access-token-table', this.el).show();
			$('#access-token-table-empty', this.el).hide();
		} else {
			$('#access-token-table', this.el).hide();
			$('#access-token-table-empty', this.el).show();
		}
		if (this.model.refresh.length > 0) {
			$('#refresh-token-table', this.el).show();
			$('#refresh-token-table-empty', this.el).hide();
		} else {
			$('#refresh-token-table', this.el).hide();
			$('#refresh-token-table-empty', this.el).show();
		}
		
		$('#access-token-count', this.el).html(this.model.access.length);
		$('#refresh-token-count', this.el).html(this.model.refresh.length);
	},
	
	render: function (eventName) {
		
		// append and render the table structure
		$(this.el).html($('#tmpl-token-table').html());
		
		var _self = this;
		
        // set up pagination
        var numPagesAccess = Math.ceil(this.model.access.length / 10);
        if (numPagesAccess > 1) {
        	$('.paginator-access', this.el).show();
        	$('.paginator-access', this.el).bootpag({
        		total: numPagesAccess,
        		page: 1
        	});        	
        } else {
        	$('.paginator-access', this.el).hide();
        }

        // count up refresh tokens
        var refreshCount = {};
        
        _.each(this.model.access.models, function (token, index) {
			// look up client
			var client = _self.options.clientList.getByClientId(token.get('clientId'));
			var view = new AccessTokenView({model: token, client: client, systemScopeList: _self.options.systemScopeList});
			view.parentView = _self;
			var element = view.render().el;
			$('#access-token-table', _self.el).append(element);
            if (Math.ceil((index + 1) / 10) != 1) {
            	$(element).hide();
            }
            
            //console.log(token.get('refreshTokenId'));
            var refId = token.get('refreshTokenId');
            if (refId != null) {
            	if (refreshCount[refId]) {
            		refreshCount[refId] += 1;
            	} else {
            		refreshCount[refId] = 1;
            	}
            	
            }

		});

        //console.log(refreshCount);
        
        // set up pagination
        var numPagesRefresh = Math.ceil(this.model.refresh.length / 10);
        if (numPagesRefresh > 1) {
        	$('.paginator-refresh', this.el).show();
        	$('.paginator-refresh', this.el).bootpag({
        		total: numPagesRefresh,
        		page: 1
        	});        	
        } else {
        	$('.paginator-refresh', this.el).hide();
        }

        _.each(this.model.refresh.models, function (token, index) {
			// look up client
			var client = _self.options.clientList.getByClientId(token.get('clientId'));
			var view = new RefreshTokenView({model: token, client: client, systemScopeList: _self.options.systemScopeList, accessTokenCount: refreshCount[token.get('id')]});
			view.parentView = _self;
			var element = view.render().el;
			$('#refresh-token-table', _self.el).append(element);
            if (Math.ceil((index + 1) / 10) != 1) {
            	$(element).hide();
            }

		});
		
/*
		_.each(this.model.models, function (scope) {
			$("#scope-table", this.el).append(new SystemScopeView({model: scope}).render().el);
		}, this);
*/
		
		this.togglePlaceholder();
        $(this.el).i18n();
		return this;
	}
});


ui.routes.push({path: "user/tokens", name: "tokens", callback:
	function() {
		this.breadCrumbView.collection.reset();
	    this.breadCrumbView.collection.add([
	        {text:$.t('admin.home'), href:""},
	        {text:$.t('token.manage'), href:"manage/#user/tokens"}
	    ]);
	    
	    this.updateSidebar('user/tokens');
	
	    var view = new TokenListView({model: {access: this.accessTokensList, refresh: this.refreshTokensList}, clientList: this.clientList, systemScopeList: this.systemScopeList});
	    
	    view.load(
			function(collection, response, options) {
				$('#content').html(view.render().el);
		    	setPageTitle($.t('token.manage'));
			}
	    );
	    
	}
});

ui.templates.push('resources/template/token.html');