private void NavigateToWebBrowser(CatalogItemModel model)
{
// another hack for improving performance.
if (model is LitresTopupCatalogItemModel)
{
var catalog = CatalogRepository.Get(CatalogId);
model.HtmlUrl = string.Format(model.HtmlUrl, EncryptService.Decrypt(catalog.AuthorizationString));
}
_navigationService.UriFor<WebBrowserPageViewModel>()
.WithParam(vm => vm.WebBrowserUrl, model.HtmlUrl)
.WithParam(vm => vm.CatalogId, CatalogId)
.WithParam(vm => vm.Title, model.Title)
.Navigate();
}
private bool CheckForUnauthorizedLitresAccess(CatalogItemModel model)
{
if (model is LitresBookshelfCatalogItemModel || model is LitresTopupCatalogItemModel)
{
var catalog = CatalogRepository.Get(CatalogId);
if (string.IsNullOrEmpty(catalog.AuthorizationString))
{
return true;
}
}
return false;
}
protected bool Equals(CatalogItemModel other)
{
return string.Equals(Title, other.Title) && string.Equals(OpdsUrl, other.OpdsUrl) && string.Equals(HtmlUrl, other.HtmlUrl);
}
public void NavigateToItem(CatalogItemModel model)
{
if (IsBusy)
{
return;
}
// hack for improving performance. If we skip this thing, app will take a lot of time to generate exception and catch it.
if (CheckForUnauthorizedLitresAccess(model))
{
NavigateToAuthorizationPage("http://robot.litres.ru/pages/catalit_authorise/");
return;
}
var treeReader = CatalogReader as ITreeCatalogReader;
if (treeReader == null)
return;
if (model is CatalogBookItemModel)
{
var bookItemModel = model as CatalogBookItemModel;
_navigationService
.UriFor<BookInfoPageViewModel>()
.WithParam(vm => vm.Title, bookItemModel.Title.ToUpper())
.WithParam(vm => vm.Description, bookItemModel.Description)
.WithParam(vm => vm.ImageUrl, bookItemModel.ImageUrl)
.WithParam(vm => vm.CatalogId, treeReader.CatalogId)
.WithParam(vm => vm.CatalogBookItemKey, TransientStorage.Put(bookItemModel))
.Navigate();
return;
}
if (!string.IsNullOrEmpty(model.OpdsUrl))
{
treeReader.GoTo(model);
LoadItems();
}
else if (!string.IsNullOrEmpty(model.HtmlUrl))
{
NavigateToWebBrowser(model);
}
}
public void GoTo(CatalogItemModel catalogItem)
{
//cancel active requests
//WebClient.Cancel();
WebClient.Cancel();
NavigationStack.Push(CurrentFolder);
CurrentFolder = new CatalogFolderModel
{
Items = new List<CatalogItemModel>(),
BaseUrl = catalogItem.OpdsUrl,
CurrentRepresentationItem = catalogItem
};
}
public void GoTo(CatalogItemModel model)
{
//cancel active requests
_cancelSource.Cancel();
_navigationStack.Push(_currentFolder);
_currentFolder = new CatalogFolderModel
{
Items = new List<CatalogItemModel>(),
BaseUrl = model.OpdsUrl + "/files"
};
}
public void GoTo(CatalogItemModel model)
{
throw new NotSupportedException();
}
public static CatalogFolderModel ToFolder(this CatalogContentDto catalogContentDto, string authorityUrl, CatalogType type, int catalogId)
{
var folderModel = new CatalogFolderModel();
var folderItems = new List<CatalogItemModel>();
if (catalogContentDto.Links != null)
{
// pagination, next page
var nextPageLink = catalogContentDto.Links.SingleOrDefault(l => !string.IsNullOrEmpty(l.Rel) && l.Rel.Equals("next")
&& !string.IsNullOrEmpty(l.Type) &&
(l.Type.Contains(CATALOG_LINK_TYPE_PREFIX) || (l.Type.Contains(CATALOG_LINK_TYPE))));
if (nextPageLink != null)
{
folderModel.NextPageUrl = GetValidUrl(nextPageLink.Href, authorityUrl);
}
}
if (catalogContentDto.Entries != null)
{
foreach (var entryDto in catalogContentDto.Entries)
{
CatalogItemModel model = null;
// book or just folder
var links = entryDto.Links.Where(e =>
{
if (string.IsNullOrEmpty(e.Rel) || (!e.Rel.StartsWith(REL_ACQUISITION_PREFIX)))
{
if (string.IsNullOrEmpty(e.Type)
|| !(e.Type.StartsWith(APPLICATION_PREFIX) && FormatConstants.Any(fc => e.Type.Contains(fc)) && !ApparentlyIgnoredFormatConstants.Any(fc => e.Type.Contains(fc))))
{
return false;
}
return true;
}
return !string.IsNullOrEmpty(e.Type); // && FormatConstants.Any(formatConstant => e.Type.Contains(formatConstant));
});
if (links.Count() != 0)
{
// links with price
var priceLink = links.SingleOrDefault(l => REL_ACQUISITION_BUY_PREFIX.Equals(l.Rel) && !string.IsNullOrEmpty(l.Href)
&& l.Prices != null && l.Prices.Any(p => !p.Price.Equals("0.00")));
// download links for diff. formats
var downloadLinks = (from linkDto in links
where !string.IsNullOrEmpty(linkDto.Type) && !string.IsNullOrEmpty(linkDto.Href) && !REL_ACQUISITION_BUY_PREFIX.Equals(linkDto.Rel)
select new BookDownloadLinkModel
{
Type = linkDto.Type, Url = GetValidUrl(linkDto.Href, authorityUrl, true)
}).Where(dl => FormatConstants.Any(fc => dl.Type.Contains(fc))).ToList();
// if there are now supported formats in downloadLinks, but there were some acquisition links with another formats => skip this book.
if (!downloadLinks.Any() && priceLink == null)
{
var htmlBuyLink = links.SingleOrDefault(l => REL_ACQUISITION_BUY_PREFIX.Equals(l.Rel));
if (htmlBuyLink == null)
{
continue;
}
model = new CatalogItemModel {HtmlUrl = GetValidUrl(htmlBuyLink.Href, authorityUrl)};
}
else
{
// this is book
BookAcquisitionLinkModel acquisitionLink = null;
if (priceLink != null && priceLink.Prices.Any(p => !p.Price.Equals("0.00")))
{
acquisitionLink = new BookAcquisitionLinkModel
{
Type = !string.IsNullOrEmpty(priceLink.DcFormat) ? priceLink.DcFormat : priceLink.Type,
Prices = priceLink.Prices != null ? priceLink.Prices.Select(p => new BookPriceModel { CurrencyCode = p.CurrencyCode, Price = p.Price })
.ToList() : null,
Url = GetValidUrl(priceLink.Href, authorityUrl)
};
}
var id = string.IsNullOrEmpty(entryDto.Id) ? string.Concat(catalogId, "-", entryDto.Title) : entryDto.Id;
model = new CatalogBookItemModel
{
AcquisitionLink = acquisitionLink,
Links = downloadLinks,
Id = id,
TrialLink = type == CatalogType.Litres ? CreateTrialLink(entryDto.Id) : null
};
}
}
// check for Litres bookshelf
else if (entryDto.Links.Any(l => LITRES_REL_BOOKSHELF_PREFIX.Equals(l.Rel)))
{
model = new LitresBookshelfCatalogItemModel();
}
// check for Litres topup
else if (entryDto.Links.Any(l => LITRES_REL_TOPUP_PREFIX.Equals(l.Rel)))
{
model = new LitresTopupCatalogItemModel
{
HtmlUrl = LITRES_PUT_MONEY_LINK_FORMAT,
Title = LITRES_REL_TOPUP_TITLE
};
}
else
{
// this is default folder
if (model == null)
{
model = new CatalogItemModel();
}
}
// title
if (string.IsNullOrEmpty(model.Title))
{
if (entryDto.Title == null)
{
continue;
}
if (!string.IsNullOrEmpty(entryDto.Title.Text))
{
model.Title = entryDto.Title.Text;
}
else if (!string.IsNullOrEmpty(entryDto.Title.DivValue))
{
model.Title = entryDto.Title.DivValue;
}
else
{
continue;
}
}
// description
model.Description = entryDto.Content != null && !string.IsNullOrEmpty(entryDto.Content.Value)
? entryDto.Content.Value
: string.Empty;
// author
model.Author = entryDto.Author != null && !string.IsNullOrEmpty(entryDto.Author.Name)
? entryDto.Author.Name
: string.Empty;
// opds catalog url
if (!(model is LitresTopupCatalogItemModel) && string.IsNullOrEmpty(model.HtmlUrl))
{
var catalogLink = entryDto.Links.FirstOrDefault(l => !string.IsNullOrEmpty(l.Type) && (l.Type.Contains(CATALOG_LINK_TYPE_PREFIX) || l.Type.Contains(CATALOG_LINK_TYPE) || l.Type.Contains(LITRES_CATALOG_LINK_TYPE_)));
if (catalogLink != null)
{
model.OpdsUrl = GetValidUrl(catalogLink.Href, authorityUrl);
}
}
// html url, to open in browser
var htmlLink = entryDto.Links.FirstOrDefault(l => HTML_TEXT_LINK_TYPE.Equals(l.Type) && !string.IsNullOrEmpty(l.Href));
if (htmlLink != null)
{
if (string.IsNullOrEmpty(model.HtmlUrl))
{
model.HtmlUrl = GetValidUrl(htmlLink.Href, authorityUrl);
}
}
//image
var imageLinks = entryDto.Links.Where(l => !string.IsNullOrEmpty(l.Type) && l.Type.Equals(IMAGE_LINK_TYPE));
if (imageLinks.Any())
{
if (imageLinks.Count() > 1)
{
var imageLink = imageLinks.SingleOrDefault(l => l.Rel.Equals(REL_IMAGE_PREFIX));
if (imageLink != null)
{
model.ImageUrl = new Uri(GetValidUrl(imageLink.Href, authorityUrl, true));
}
}
else
{
model.ImageUrl = new Uri(GetValidUrl(imageLinks.First().Href, authorityUrl, true));
}
}
// decoding of description & title
model.Description = HttpUtility.HtmlDecode(model.Description);
model.Title = HttpUtility.HtmlDecode(model.Title);
model.Author = HttpUtility.HtmlDecode(model.Author);
if (model.Description.Contains("<") && model.Description.Contains(">"))
{
model.Description = HtmlToText.Convert(model.Description);
}
model.Description = model.Description.Trim();
if (model.Author.Contains("<") && model.Author.Contains(">"))
{
model.Author = HtmlToText.Convert(model.Author);
}
folderItems.Add(model);
}
}
folderModel.Items = folderItems;
return folderModel;
}
protected bool Equals(CatalogItemModel other)
{
return(string.Equals(Title, other.Title) && string.Equals(OpdsUrl, other.OpdsUrl) && string.Equals(HtmlUrl, other.HtmlUrl));
}
