public ICollection<AppUpdate> CheckForUpdate(AppBrief newOne) {
DateTime now = DateTime.Now;
List<AppUpdate> updates = new List<AppUpdate>();
// 检查版本
if (Version != newOne.Version) {
AppUpdate update = new AppUpdate() {
App = Id,
Time = now,
NewValue = newOne.Version,
OldValue = Version,
Type = AppUpdateType.NewRelease,
};
updates.Add(update);
}
// 检查价格，价格单位有变动时涉及换算问题，不计入价格变化中
if (Price != newOne.Price && Currency == newOne.Currency) {
AppUpdate update = new AppUpdate() {
App = Id,
Time = now,
NewValue = newOne.Price.ToString(),
OldValue = Price.ToString(),
Type = newOne.Price == 0 ? AppUpdateType.PriceFree :
(newOne.Price > Price ? AppUpdateType.PriceIncrease : AppUpdateType.PriceDecrease)
};
updates.Add(update);
}
return updates;
}
public static AppBrief ToAppBrief(this IDataRecord record, string columnPrefix = "") {
AppBrief brief = new AppBrief() {
AverageUserRatingForCurrentVersion =
record.GetNullableFloat(columnPrefix + "AverageUserRatingForCurrentVersion"),
Currency = record.GetString(columnPrefix + "Currency"),
Features = record.GetStringArray(columnPrefix + "Features"),
FileSize = record.GetInt32(columnPrefix + "FileSize"),
IconUrl = record.GetString(columnPrefix + "IconUrl"),
Id = record.GetInt32(columnPrefix + "Id"),
Introduction = record.GetString(columnPrefix + "Introduction"),
LanguagePriority = record.GetInt32(columnPrefix + "LanguagePriority"),
Name = record.GetString(columnPrefix + "Name"),
Price = record.GetFloat(columnPrefix + "Price"),
PrimaryCategory = Category.Get(record.GetInt32(columnPrefix + "PrimaryCategory")),
ReleaseDate = record.GetDateTime(columnPrefix + "ReleaseDate"),
ReleaseNotes = record.GetString(columnPrefix + "ReleaseNotes"),
SupportedDevices = record.GetStringArray(columnPrefix + "SupportedDevices"),
UserRatingCountForCurrentVersion =
record.GetNullableInt32(columnPrefix + "UserRatingCountForCurrentVersion"),
Version = record.GetString(columnPrefix + "Version"),
ViewUrl = record.GetString(columnPrefix + "ViewUrl"),
LastValidUpdate = new AppUpdate() {
NewValue = record.GetString(columnPrefix + "LastValidUpdateNewValue"),
OldValue = record.GetString(columnPrefix + "LastValidUpdateOldValue"),
Time = record.GetDateTime(columnPrefix + "LastValidUpdateTime"),
Type = (AppUpdateType)record.GetInt32(columnPrefix + "LastValidUpdateType")
},
Developer = new Developer() {
Id = record.GetInt32(columnPrefix + "DeveloperId"),
Name = record.GetString(columnPrefix + "DeveloperName"),
ViewUrl = record.GetString(columnPrefix + "DeveloperViewUrl")
}
};
brief.LastValidUpdate.App = brief.Id;
return brief;
}
public RevokedApp(App source) {
Id = source.Id;
Brief = new AppBrief() { Id = source.Id };
UpdateFrom(source);
}
public TrackingApp(AppBrief app, AppTrack track) {
App = app;
Track = track;
}
public static IHtmlString AppRatingCount(this HtmlHelper helper, AppBrief app) {
string output;
if (app.AverageUserRatingForCurrentVersion.HasValue) {
output = app.AverageUserRatingForCurrentVersion + "(" + app.UserRatingCountForCurrentVersion + ")";
}
else {
output = "<span class=\"trival\">未评分</span>"; ;
}
return helper.Raw(output);
}