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FulcrumCore.cs
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FulcrumCore.cs
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using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.IO;
using System.Collections;
using System.Web.Script.Serialization;
using System.Drawing;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Carto;
namespace fulcrum
{
static class FulcrumCore
{
//Per v2 documentation these are the field types
//Not implementing, just documenting for now
enum FulcrumFieldTypes
{
Section,
ClassificationField,
ChoiceField,
TextField,
PhotoField,
DateTimeField,
Label
}
public static bool FireUp(fulcrumform form, System.Windows.Controls.ProgressBar progBar, System.Windows.Controls.Label statusLabel)
{
try
{
statusLabel.Content = "Retrieving records...";
fulcrumrecords records = FulcrumCore.GetRecords(form.id);
statusLabel.Content = "Processing records...";
FulcrumCore.ParseRecords(form, records, progBar);
statusLabel.Content = "Creating layer...";
ArcStuff.DoArcStuff(form, records);
statusLabel.Content = "Complete!";
return true;
}
catch (Exception e)
{
string ouch = e.Message;
return false;
}
}
public static fulcrumforms GetForms()
{
try
{
string reqString = FulcrumTools.apiBase + "/forms";
HttpWebRequest req = WebRequest.Create(new Uri(reqString)) as HttpWebRequest;
req.Method = "GET";
req.Headers.Add("X-ApiToken:" + Properties.Settings.Default.fulcrumApiKey);
//This is critical to authentication!!!
req.Accept = "application/json";
string result = null;
using (HttpWebResponse resp = req.GetResponse() as HttpWebResponse)
{
StreamReader reader = new StreamReader(resp.GetResponseStream());
result = reader.ReadToEnd();
//Console.WriteLine(result.ToString());
//A good explanation of what the serializer returns
//http://www.tomasvera.com/programming/using-javascriptserializer-to-parse-json-objects/
JavaScriptSerializer ser = new JavaScriptSerializer();
fulcrumforms fulcrumForms = ser.Deserialize<fulcrumforms>(result);
return fulcrumForms;
}
/** A POST for writing back to fulcrum via api *
// Encode the parameters as form data:
byte[] formData = UTF8Encoding.UTF8.GetBytes(reqString);
// Send the request:
using (Stream post = req.GetRequestStream())
{
post.Write(formData, 0, formData.Length);
}
* */
}
catch (Exception ex)
{
string ouch = ex.Message;
return null;
}
}
//Not used but you could use this to return a single form
public static fulcrumform GetForm(string formId)
{
try
{
string reqString = FulcrumTools.apiBase + "/forms/" + formId;
HttpWebRequest req = WebRequest.Create(new Uri(reqString)) as HttpWebRequest;
req.Method = "GET";
req.Headers.Add("X-ApiToken:" + Properties.Settings.Default.fulcrumApiKey);
//This is critical to authentication!!!
req.Accept = "application/json";
string result = null;
using (HttpWebResponse resp = req.GetResponse() as HttpWebResponse)
{
StreamReader reader =
new StreamReader(resp.GetResponseStream());
result = reader.ReadToEnd();
JavaScriptSerializer ser = new JavaScriptSerializer();
fulcrumform fulcrumForm = ser.Deserialize<fulcrumform>(result);
return fulcrumForm;
}
}
catch (Exception ex)
{
string ouch = ex.Message;
return null;
}
}
public static fulcrumrecords GetRecords(string formId)
{
try
{
//if no form id is passed all records are returned
string reqString;
if (formId == string.Empty)
{
reqString = FulcrumTools.apiBase + "/records";
}
else
{
reqString = FulcrumTools.apiBase + "/records?form_id=" + formId;
}
HttpWebRequest req = WebRequest.Create(new Uri(reqString)) as HttpWebRequest;
req.Method = "GET";
req.Headers.Add("X-ApiToken:" + Properties.Settings.Default.fulcrumApiKey);
//This is critical to authentication!!!
req.Accept = "application/json";
string result = null;
using (HttpWebResponse resp = req.GetResponse() as HttpWebResponse)
{
StreamReader reader =
new StreamReader(resp.GetResponseStream());
result = reader.ReadToEnd();
//Console.WriteLine(result.ToString());
JavaScriptSerializer ser = new JavaScriptSerializer();
fulcrumrecords orecords = ser.Deserialize<fulcrumrecords>(result);
return orecords;
}
}
catch (Exception ex)
{
string ouch = ex.Message;
return null;
}
}
public static bool ParseRecords(fulcrumform form, fulcrumrecords fulcrumRecords, System.Windows.Controls.ProgressBar progBar)
{
try
{
progBar.Maximum = fulcrumRecords.records.Count;
//WPF Prog Bar, WTF?!
//System.Windows.Media.Duration duration = new Duration(TimeSpan.FromSeconds(10));
//System.Windows.Media.Animation.DoubleAnimation doubleanimation = new System.Windows.Media.Animation.DoubleAnimation(100.0, duration);
//progBar.BeginAnimation(System.Windows.Controls.ProgressBar.ValueProperty, doubleanimation);
int count = 1;
foreach (fulcrumrecord record in fulcrumRecords.records)
{
progBar.Value = count;
string recordId = record.id;
foreach (string key in record.form_values.Keys)
{
fulcrumattribute recordAttribute = new fulcrumattribute();
recordAttribute.recordID = recordId;
string fieldname;
string fieldType;
if (GetFieldNameAndTypeFromFormDefinition(form, key, out fieldname, out fieldType))
{
//if the value is a set of sub objects, we'll get another dictionary
//if the value is a javascript array, we'll get an arraylist
//otherwise we'll get the string value
object o = record.form_values[key];
if (o is Dictionary<string, object>)
{
//I think!!! the only time this will happen is when the value comes from a choice list
//so grab the value from the choice_values item
Dictionary<string, object> d = ((Dictionary<string, object>)o);
//ToDo: if this is a value\label pair we're always going to ge the coded value
//is there a way to determine if it is a coded value???
//e.g. coded value = 002, label = Krazy Kool
ArrayList a = (ArrayList)d["choice_values"];
recordAttribute.fieldName = fieldname;
recordAttribute.fieldValue = a[0].ToString();
}
else if (o is ArrayList)
{
foreach (object child in ((ArrayList)o))
{
if (child is string)
{
recordAttribute.fieldName = fieldname;
recordAttribute.fieldValue = child.ToString();
//Console.WriteLine(fieldname + ": " + child.ToString());
}
else if (child is Dictionary<string, object>)
{
Dictionary<string, object> childDict = (Dictionary<string, object>)child;
foreach (string childKey in childDict.Keys)
{
//ToDo: we are writing the link to the photo as well as
//grabbing the photo thumb as an image and adding it to the records' photo collection
//and saving it to disk
//you will likely want to choose from these options, downloading is expensive
if (fieldType == "PhotoField")
{
string photoId = childDict["photo_id"].ToString();
string thumbUrl = childDict["thumbnail"].ToString();
string url = childDict["url"].ToString();
Image img = GetFulcrumImage(thumbUrl);
record.photos.Add(img);
string pathToPhoto = Properties.Settings.Default.pathToPhotoFolder + "\\" + photoId + ".jpg";
string linkToThumb = "http://web.fulcrumapp.com/photos/" + photoId + "/thumbnail";
string linkToPhoto = " http://web.fulcrumapp.com/photos/" + photoId;
img.Save(pathToPhoto, System.Drawing.Imaging.ImageFormat.Jpeg);
record.photolinks.Add(linkToPhoto);
}
else
{
//assuming all values are now strings
recordAttribute.fieldName = childKey.ToString();
recordAttribute.fieldValue = childDict[childKey].ToString();
//Console.WriteLine(childKey.ToString() + ": " + childDict[childKey].ToString());
}
}
}
}
}
else
{
recordAttribute.fieldName = fieldname;
recordAttribute.fieldValue = o.ToString();
//Console.WriteLine(fieldname + ": " + o.ToString());
}
record.attributes.Add(recordAttribute);
}
else
{
//couldnt get the field name or type
}
}
count++;
}
return true;
}
catch (Exception e)
{
string ouch = e.Message;
return false;
}
}
private static Image GetFulcrumImage(string urlToImage)
{
try
{
WebClient webClient = new WebClient();
webClient.Headers.Add("X-ApiToken:" + Properties.Settings.Default.fulcrumApiKey);
byte[] imageBytes = webClient.DownloadData(urlToImage);
MemoryStream mem = new MemoryStream(imageBytes);
return Image.FromStream(mem);
}
catch
{
return null;
}
}
private static bool GetFieldNameAndTypeFromFormDefinition(fulcrumform form, string fieldId, out string fieldName, out string fieldType)
{
try
{
foreach (fulcrumelement element in form.elements)
{
if (element.elements == null)
{
if (element.key == fieldId)
{
fieldName = element.data_name;
fieldType = element.type;
return true;
}
}
else
{
//we have nested elements
//ToDo: implement recursion to get all, we are only going one level here
foreach (fulcrumelement childElement in element.elements)
{
if (childElement.key == fieldId)
{
fieldName = childElement.data_name;
fieldType = childElement.type;
return true;
}
}
}
}
fieldName = "";
fieldType = "";
return false;
}
catch (Exception e)
{
string ouch = e.Message;
fieldName = "";
fieldType = "";
return false;
}
}
}
}