Basic form

Change-Id: I7ee858b208730b110b355d3f72037f0975aaa356
diff --git a/src/app/core/form/form-helpers.ts b/src/app/core/form/form-helpers.ts
new file mode 100644
index 0000000..0677cbd
--- /dev/null
+++ b/src/app/core/form/form-helpers.ts
@@ -0,0 +1,106 @@
+import * as _ from 'lodash';
+import {IXosConfigHelpersService} from '../services/helpers/config.helpers';
+
+export interface IXosFormHelpersService {
+  _getFieldFormat(value: any): string;
+  parseModelField(fields: any): any[];
+  buildFormStructure(modelField: any[], customField: any[], model: any, order: string[]): any;
+}
+
+export class XosFormHelpers {
+  static $inject = ['ConfigHelpers'];
+
+  constructor (
+    private ConfigHelpers: IXosConfigHelpersService
+  ) {
+
+  }
+
+  public _isEmail = (text) => {
+    const re = /(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))/;
+    return re.test(text);
+  };
+
+  public  _getFieldFormat = (value) => {
+    if (angular.isArray(value)) {
+      return 'array';
+    }
+
+    // check if is date
+    if (
+      angular.isDate(value) ||
+      (
+        !Number.isNaN(Date.parse(value)) && // Date.parse is a number
+        /^\d+-\d+-\d+\D\d+:\d+:\d+\.\d+\D/.test(value) // the format match ISO dates
+      )) {
+      return 'date';
+    }
+
+    // check if is boolean
+    // isNaN(false) = false, false is a number (0), true is a number (1)
+    if (typeof value  === 'boolean') {
+      return 'boolean';
+    }
+
+    // check if a string is an email
+    if (this._isEmail(value)) {
+      return 'email';
+    }
+
+    // if null return string
+    if (angular.isString(value) || value === null) {
+      return 'text';
+    }
+
+    return typeof value;
+  };
+
+  public buildFormStructure = (modelField, customField, model, order) => {
+    // TODO take an array as input
+    // NOTE do we want to support auto-generated forms??
+    // We can take that out of this component and autogenerate the config somewhere else
+    const orderedForm = {};
+
+    modelField = angular.extend(modelField, customField);
+    customField = customField || {};
+
+    if (order) {
+      _.each(order, function (key: string) {
+        orderedForm[key] = {};
+      });
+    }
+
+    _.each(Object.keys(modelField), (f) => {
+
+      orderedForm[f] = {
+        label: (customField[f] && customField[f].label) ? `${customField[f].label}:` : this.ConfigHelpers.toLabel(f),
+        type: (customField[f] && customField[f].type) ? customField[f].type : this._getFieldFormat(model[f]),
+        validators: (customField[f] && customField[f].validators) ? customField[f].validators : {},
+        hint: (customField[f] && customField[f].hint) ? customField[f].hint : '',
+      };
+
+      if (customField[f] && customField[f].options) {
+        orderedForm[f].options = customField[f].options;
+      }
+      if (customField[f] && customField[f].properties) {
+        orderedForm[f].properties = customField[f].properties;
+      }
+      if (orderedForm[f].type === 'date') {
+        model[f] = new Date(model[f]);
+      }
+
+      if (orderedForm[f].type === 'number') {
+        model[f] = parseInt(model[f], 10);
+      }
+    });
+
+    return orderedForm;
+  };
+
+  public parseModelField = (fields) => {
+  return _.reduce(fields, (form, f) => {
+    form[f] = {};
+    return form;
+  }, {});
+}
+}