/*jslint indent: 2, nomen: true, maxlen: 100, sloppy: true, vars: true, white: true, plusplus: true */
/*global require, exports, window, Backbone, arangoDocument, _, $*/

window.arangoDocuments = Backbone.Collection.extend({
      currentPage: 1,
      collectionID: 1,
      totalPages: 1,
      documentsPerPage: 10,
      documentsCount: 1,
      offset: 0,

      url: '/_api/documents',
      model: arangoDocument,
      getFirstDocuments: function () {
        if (this.currentPage !== 1) {
          var link = window.location.hash.split("/");
          window.location.hash = link[0] + "/" + link[1] + "/" + link[2] + "/1";
        }
      },
      getLastDocuments: function () {
        if (this.currentPage !== this.totalPages) {
          var link = window.location.hash.split("/");
          window.location.hash = link[0] + "/" + link[1] + "/" + link[2] + "/" + this.totalPages;
        }
      },
      getPrevDocuments: function () {
        if (this.currentPage !== 1) {
          var link = window.location.hash.split("/");
          var page = parseInt(this.currentPage, null) - 1;
          window.location.hash = link[0] + "/" + link[1] + "/" + link[2] + "/" + page;
        }
      },
      getNextDocuments: function () {
        if (this.currentPage !== this.totalPages) {
          var link = window.location.hash.split("/");
          var page = parseInt(this.currentPage, null) + 1;
          window.location.hash = link[0] + "/" + link[1] + "/" + link[2] + "/" + page;
        }
      },
      getDocuments: function (colid, currpage) {
        var self = this;
        this.collectionID = colid;
        this.currentPage = currpage;

        $.ajax({
          cache: false,
          type: "GET",
          url: "/_api/collection/" + this.collectionID + "/count",
          contentType: "application/json",
          processData: false,
          async: false,
          success: function(data) {
            self.totalPages = Math.ceil(data.count / self.documentsPerPage);
            self.documentsCount = data.count;
          },
          error: function(data) {
          }
        });


        if (isNaN(this.currentPage) || this.currentPage === undefined || this.currentPage < 1) {
          this.currentPage = 1;
        }
        if (this.totalPages === 0) {
          this.totalPages = 1;
        }

        this.offset = (this.currentPage - 1) * this.documentsPerPage;

        $.ajax({
          cache: false,
          type: 'PUT',
          async: false,
          url: '/_api/simple/all/',
          data:
            '{"collection":"' + this.collectionID + '","skip":'+
            this.offset + ',"limit":' + String(this.documentsPerPage) + '}',
          contentType: "application/json",
          success: function(data) {
            self.clearDocuments();
            if (self.documentsCount !== 0) {
              $.each(data.result, function(k, v) {
                window.arangoDocumentsStore.add({
                  "id": v._id,
                  "rev": v._rev,
                  "key": v._key,
                  "content": v
                });
              });
              window.documentsView.drawTable();
              window.documentsView.renderPagination(self.totalPages);
            }
            else {
              window.documentsView.initTable();
              window.documentsView.drawTable();
            }
          },
          error: function(data) {
          }
        });
      },

      getFilteredDocuments: function (colid, currpage, filter, bindValues) {
        var self = this;
        this.collectionID = colid;
        this.currentPage = currpage;
        var filterString;
        if(filter.length === 0){
           filterString ="";
        } else {
          filterString = ' FILTER' + filter.join(' && ');
        }
        var body = {
          //temp solution, waiting for api with paging possibility
          query: "FOR u IN " + this.collectionID + 
                 filterString + 
                 " LIMIT 0," + self.documentsPerPage + 
                 " RETURN u",
          bindVars: bindValues,
          options: { 
            fullCount: true
          } 
        };
        $.ajax({
          cache: false,
          type: 'POST',
          async: false,
          url: '/_api/cursor',
          data: JSON.stringify(body),
          contentType: "application/json",
          success: function(data) {
            self.clearDocuments();
            self.documentsCount = data.extra.fullCount; 
            self.totalPages = Math.ceil(self.documentsCount / self.documentsPerPage);
            if (isNaN(this.currentPage) || this.currentPage === undefined || this.currentPage < 1) {
              this.currentPage = 1;
            }
            if (this.totalPages === 0) {
              this.totalPages = 1;
            }

            this.offset = (this.currentPage - 1) * this.documentsPerPage;
            if (self.documentsCount !== 0) {
              $.each(data.result, function(k, v) {
                window.arangoDocumentsStore.add({
                  "id": v._id,
                  "rev": v._rev,
                  "key": v._key,
                  "content": v
                });
              });
              window.documentsView.drawTable();
              window.documentsView.renderPagination(self.totalPages);
            }
            else {
              window.documentsView.initTable();
              window.documentsView.drawTable();
            }
          },
          error: function(data) {
            "use strict";
          }
        });
      },
      clearDocuments: function () {
        window.arangoDocumentsStore.reset();
      }
});