public async Task <IActionResult> PostProperty([FromBody] AddProperty addProperty)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
var userCp = HttpContext.User;
string landlord = TokenVerifier.GetLandlord(userCp);
//Generate property
Property property = _mapper.Map <AddProperty, Property>(addProperty);
property.PropertyStatus = Property.VerificationStatus.Pending;
property.AppUserRef = landlord;
//Validate property
if (!TryValidateModel(property))
{
return(BadRequest());
}
List <BasicImage> images = new List <BasicImage>();
int imgCount = 0;
foreach (string imageStr in addProperty.Images)
{
BasicImage bi = WriteImage(imageStr, imgCount);
if (bi != null)
{
images.Add(bi);
imgCount++;
}
else
{
CleanImages(images);
return(BadRequest());
}
}
//All Images are valid and added
_context.Property.Add(property);
foreach (BasicImage bi in images)
{
bi.PropertyRef = property.ID;
Image im = _mapper.Map <BasicImage, Image>(bi);
_context.Image.Add(im);
}
await _context.SaveChangesAsync();
return(Ok());
}
// Update specified image
// Update for an image would just be a combination of insert/delete
// Process:
// Extract first half method of Insert to reuse (where system file name / bytes are formed)
// Use that to convert image and upload to drive
// Having passed previous system file name, use that to delete the old image from drive
// Update systemFileName in model and send that to update with update stored proc
// When creating this service, do not forget to add the same method signature to the interface
// Delete specified image
public void Delete(BasicImage model)
{
// Deletes image from drive
DeleteFromDrive(model.SystemFileName);
// Deletes image from database
this.DataProvider.ExecuteNonQuery(
"ImageFiles_Delete",
inputParamMapper : delegate(SqlParameterCollection paramCol)
{
paramCol.AddWithValue("@id", model.Id);
}
);
}
private static BasicImage BasicImageMapper(IDataReader reader)
{
BasicImage model = new BasicImage();
int index = 0;
model.Id = reader.GetSafeInt32(index++);
model.ImageFileName = reader.GetSafeString(index++);
model.SystemFileName = reader.GetSafeString(index++);
model.ImageFileType = reader.GetSafeInt32(index++);
model.Location = reader.GetSafeString(index++);
model.CreatedDate = reader.GetSafeDateTime(index++);
model.ModifiedDate = reader.GetSafeDateTime(index++);
model.ModifiedBy = reader.GetSafeString(index++);
return(model);
}
// Selecting all images
public List <BasicImage> SelectAll()
{
List <BasicImage> result = new List <BasicImage>();
this.DataProvider.ExecuteCmd(
"ImageFiles_SelectAll",
inputParamMapper : null,
singleRecordMapper : delegate(IDataReader reader, short set)
{
BasicImage model = BasicImageMapper(reader);
result.Add(model);
}
);
return(result);
}
// Select image by id
public BasicImage SelectById(int id)
{
BasicImage model = new BasicImage();
this.DataProvider.ExecuteCmd(
"ImageFiles_SelectById",
inputParamMapper : delegate(SqlParameterCollection paramCol)
{
paramCol.AddWithValue("@id", id);
},
singleRecordMapper : delegate(IDataReader reader, short set)
{
model = BasicImageMapper(reader);
}
);
return(model);
}
private static BasicImage WriteImage(string imageStr, int imgCount)
{
//Block injection attempt
if (imageStr.IndexOf("data:image/") != 0)
{
return(null);
}
int pStart = imageStr.IndexOf("data:image/") + "data:image/".Length;
int pEnd = imageStr.IndexOf(";");
string mime = imageStr.Substring(pStart, pEnd - pStart);
//Only allowing these types of files to be uploaded
//otherwise completely reject
//image/jpeg
//image/png
if (mime == "jpeg" || mime == "png")
{
string b64Content = imageStr.Substring(pStart + mime.Length + ";base64,".Length);
byte[] imageBytes = Convert.FromBase64String(b64Content);
string fileext = "." + mime;
string guid = Guid.NewGuid().ToString();
string pathUID = guid + fileext;
System.IO.File.WriteAllBytes("c:\\temp\\" + pathUID, imageBytes);
BasicImage bi = new BasicImage
{
//Initialise as -1 prior to autogeneration of PropertyID image is bound to
PropertyRef = -1,
Position = ++imgCount,
Path = pathUID
};
return(bi);
}
else
{
return(null);
}
}
static async Task SendImage(Stream stream, BasicImage image, int size)
{
stream.WriteByte(Core.Code.Success);
await stream.WriteAsync(image.Data, 0, size);
}
public static async Task <(FormValueProvider fvp, List <BasicImage> bi)> StreamFile(this HttpRequest request)
{
if (!MultipartRequestHelper.IsMultipartContentType(request.ContentType))
{
throw new Exception($"Expected a multipart request, but got {request.ContentType}");
}
// Used to accumulate all the form url encoded key value pairs in the
// request.
var formAccumulator = new KeyValueAccumulator();
int positionCounter = 1;
var boundary = MultipartRequestHelper.GetBoundary(
MediaTypeHeaderValue.Parse(request.ContentType),
_defaultFormOptions.MultipartBoundaryLengthLimit);
var reader = new MultipartReader(boundary, request.Body);
List <BasicImage> images = new List <BasicImage>();
var section = await reader.ReadNextSectionAsync();
while (section != null)
{
ContentDispositionHeaderValue contentDisposition;
var hasContentDispositionHeader = ContentDispositionHeaderValue.TryParse(section.ContentDisposition, out contentDisposition);
if (hasContentDispositionHeader)
{
if (MultipartRequestHelper.HasFileContentDisposition(contentDisposition))
{
string fileext = System.IO.Path.GetExtension(contentDisposition.FileName.ToString());
string guid = Guid.NewGuid().ToString();
string pathUID = guid + fileext;
using (var stream = System.IO.File.Create("c:\\temp\\" + pathUID))
{
await section.Body.CopyToAsync(stream);
BasicImage bi = new BasicImage
{
//Initialise as -1 prior to autogeneration of PropertyID image is bound to
PropertyRef = -1,
Position = positionCounter++,
Path = pathUID
};
images.Add(bi);
}
}
else if (MultipartRequestHelper.HasFormDataContentDisposition(contentDisposition))
{
// Content-Disposition: form-data; name="key"
//
// value
// Do not limit the key name length here because the
// multipart headers length limit is already in effect.
var key = HeaderUtilities.RemoveQuotes(contentDisposition.Name);
var encoding = GetEncoding(section);
using (var streamReader = new System.IO.StreamReader(
section.Body,
encoding,
detectEncodingFromByteOrderMarks: true,
bufferSize: 1024,
leaveOpen: true))
{
// The value length limit is enforced by MultipartBodyLengthLimit
var value = await streamReader.ReadToEndAsync();
if (String.Equals(value, "undefined", StringComparison.OrdinalIgnoreCase))
{
value = String.Empty;
}
formAccumulator.Append(key.Value, value); // For .NET Core <2.0 remove ".Value" from key
if (formAccumulator.ValueCount > _defaultFormOptions.ValueCountLimit)
{
throw new System.IO.InvalidDataException($"Form key count limit {_defaultFormOptions.ValueCountLimit} exceeded.");
}
}
}
}
// Drains any remaining section body that has not been consumed and
// reads the headers for the next section.
section = await reader.ReadNextSectionAsync();
}
// Bind form data to a model
var formValueProvider = new FormValueProvider(
BindingSource.Form,
new FormCollection(formAccumulator.GetResults()),
CultureInfo.CurrentCulture);
return(formValueProvider, images);
}
public async Task <IActionResult> UpdateProperty([FromRoute] int id, [FromBody] AddProperty addProperty)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
var userCp = HttpContext.User;
string landlord = TokenVerifier.GetLandlord(userCp);
Property currentProperty = await _context.Property.FindAsync(id);
if (currentProperty == null)
{
return(NotFound());
}
if (landlord == null || landlord != currentProperty.AppUserRef)
{
return(Unauthorized());
}
//Generate property
Property newproperty = _mapper.Map <AddProperty, Property>(addProperty);
newproperty.PropertyStatus = Property.VerificationStatus.Pending;
newproperty.AppUserRef = landlord;
//Validate new property
if (!TryValidateModel(newproperty))
{
return(BadRequest());
}
List <BasicImage> images = new List <BasicImage>();
int imgCount = 0;
foreach (string imageStr in addProperty.Images)
{
BasicImage bi = WriteImage(imageStr, imgCount);
if (bi != null)
{
images.Add(bi);
imgCount++;
}
else
{
CleanImages(images);
return(BadRequest());
}
}
List <Image> oldImages = _context.Image.Where(i => i.PropertyRef == id).ToList();
List <BasicImage> oldBasicImages = _mapper.Map <List <Image>, List <BasicImage> >(oldImages);
//From DB
foreach (Image i in oldImages)
{
_context.Image.Remove(i);
}
//From disk
CleanImages(oldBasicImages);
currentProperty.AddressLine1 = addProperty.AddressLine1;
currentProperty.AddressLine2 = addProperty.AddressLine2;
currentProperty.City = addProperty.City;
currentProperty.County = addProperty.County;
currentProperty.Postcode = addProperty.Postcode;
currentProperty.Longitude = addProperty.Longitude;
currentProperty.Latitude = addProperty.Latitude;
currentProperty.PropertyDescription = addProperty.PropertyDescription;
currentProperty.PropertyStatus = Property.VerificationStatus.Pending;
foreach (BasicImage bi in images)
{
bi.PropertyRef = currentProperty.ID;
Image im = _mapper.Map <BasicImage, Image>(bi);
_context.Image.Add(im);
}
await _context.SaveChangesAsync();
return(Ok());
}
