/// <summary>
/// A special intermediate function for converting string chaining into real chaining.
/// </summary>
/// <param name="chainDataString"></param>
/// <param name="search"></param>
/// <param name="previousChains"></param>
/// <typeparam name="S"></typeparam>
/// <typeparam name="V"></typeparam>
/// <returns></returns>
protected Task ChainStringAsync <S, V>(ChainRequestString chainDataString, Func <S, Task <List <V> > > search, List <List <IIdView> > previousChains)
where S : IConstrainedSearcher where V : IIdView
{
var t = timer.StartTimer($"{chainDataString.endpoint} {string.Join(".", chainDataString.chains)}");
try
{
var chainData = new ChainRequest <S, V>(chainDataString)
{
retriever = search
};
try
{
chainData.baseSearch = JsonSerializer.Deserialize <S>(chainDataString.search, config.JsonOptions);
}
catch (Exception ex)
{
//I don't care too much about json deseralize errors, just the message. I don't even log it.
throw new BadRequestException(ex.Message + " (CHAIN REMINDER: json search comes last AFTER all . chaining in a request)");
}
return(ChainAsync(chainData, previousChains));
}
finally
{
timer.EndTimer(t);
}
}
/// <summary>
/// The major "string request" based chaining. Repeatedly call this function for every chain request
/// </summary>
/// <param name="request"></param>
/// <param name="requester"></param>
/// <param name="results"></param>
/// <param name="previousResults"></param>
/// <param name="fields"></param>
/// <returns></returns>
public Task ChainAsync(ChainRequestString data, Requester requester, List <List <IIdView> > previousResults)
{
if (data.endpoint == "file")
{
return(ChainStringAsync(data, services.file, requester, previousResults));
}
else if (data.endpoint == "user")
{
return(ChainStringAsync(data, services.user, requester, previousResults));
}
else if (data.endpoint == "content")
{
return(ChainStringAsync(data, services.content, requester, previousResults));
}
else if (data.endpoint == "category")
{
return(ChainStringAsync(data, services.category, requester, previousResults));
}
else if (data.endpoint == "module")
{
return(ChainStringAsync(data, services.module, requester, previousResults));
}
else if (data.endpoint == "modulemessage")
{
return(ChainStringAsync(data, services.modulemessage, requester, previousResults));
}
else if (data.endpoint == "comment")
{
return(ChainStringAsync(data, services.comment, requester, previousResults));
}
else if (data.endpoint == "commentaggregate")
{
return(ChainStringAsync <CommentSearch, CommentAggregateView>(data, (s) => services.comment.SearchAggregateAsync(s, requester), previousResults));
}
else if (data.endpoint == "activity")
{
return(ChainStringAsync(data, services.activity, requester, previousResults));
}
else if (data.endpoint == "activityaggregate")
{
return(ChainStringAsync <ActivitySearch, ActivityAggregateView>(data, (s) => services.activity.SearchAggregateAsync(s, requester), previousResults));
}
else if (data.endpoint == "systemaggregate")
{
return(ChainStringAsync <BaseSearch, SystemAggregate>(data, (s) => GetSystemAggregate(s), previousResults));
}
else if (data.endpoint == "watch")
{
return(ChainStringAsync(data, services.watch, requester, previousResults));
}
else if (data.endpoint == "vote")
{
return(ChainStringAsync(data, services.vote, requester, previousResults));
}
else
{
throw new BadRequestException($"Unknown request: {data.endpoint}");
}
}
/// <summary>
/// Parse a specially-formatted request into a temporary chain container. The container is not complete
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
public ChainRequestString ParseInitialChainString(string request)
{
var match = Regex.Match(request, config.RequestRegex, RegexOptions.IgnoreCase);
var result = new ChainRequestString()
{
viewableIdentifier = request,
search = match.Groups["search"].Value,
endpoint = match.Groups["endpoint"].Value,
name = match.Groups["name"].Value
};
//Convert chaining strings into proper chaining objects.
result.chains = match.Groups["chain"].Captures.Select(x =>
{
var c = x.Value;
var match = Regex.Match(c, config.ChainRegex, RegexOptions.IgnoreCase);
var chaining = new Chaining()
{
viewableIdentifier = c,
getFieldPath = match.Groups["field"].Value.Split("_".ToCharArray(), StringSplitOptions.RemoveEmptyEntries).ToList(),
searchFieldPath = match.Groups["searchfield"].Value.Split("_".ToCharArray(), StringSplitOptions.RemoveEmptyEntries).ToList()
};
int tempIndex = 0;
if (!int.TryParse(match.Groups["index"].Value, out tempIndex))
{
throw new BadRequestException($"Can't parse chain index: {match.Groups["index"]}");
}
chaining.index = tempIndex;
return(chaining);
});
if (string.IsNullOrWhiteSpace(result.search))
{
result.search = "{}";
}
return(result);
}
/// <summary>
/// A special intermediate function for converting string chaining into real chaining. One extra step as shortcut:
/// convert view service and requester to proper Func
/// </summary>
/// <param name="chainData"></param>
/// <param name="service"></param>
/// <param name="requester"></param>
/// <param name="previousChains"></param>
/// <typeparam name="S"></typeparam>
/// <typeparam name="V"></typeparam>
/// <returns></returns>
protected Task ChainStringAsync <S, V>(ChainRequestString chainData, IViewReadService <V, S> service, Requester requester, List <List <IIdView> > previousChains)
where S : IConstrainedSearcher where V : IIdView
{
return(ChainStringAsync <S, V>(chainData, (s) => service.SearchAsync(s, requester), previousChains));
}
/// <summary>
/// The major "string request" based chaining. Repeatedly call this function for every chain request
/// </summary>
/// <param name="request"></param>
/// <param name="requester"></param>
/// <param name="results"></param>
/// <param name="previousResults"></param>
/// <param name="fields"></param>
/// <returns></returns>
public Task ChainAsync(ChainRequestString data, Requester requester, List <List <IIdView> > previousResults)
{
//This HAS to be this stupid because of the generics: referencing the service directly gives us the typing information
//Don't know how to do that with reflection yet
if (data.endpoint == "file")
{
return(ChainStringAsync(data, services.file, requester, previousResults));
}
else if (data.endpoint == "user")
{
return(ChainStringAsync(data, services.user, requester, previousResults));
}
else if (data.endpoint == "content")
{
return(ChainStringAsync(data, services.content, requester, previousResults));
}
else if (data.endpoint == "category")
{
return(ChainStringAsync(data, services.category, requester, previousResults));
}
else if (data.endpoint == "module")
{
return(ChainStringAsync(data, services.module, requester, previousResults));
}
else if (data.endpoint == "modulemessage")
{
return(ChainStringAsync(data, services.modulemessage, requester, previousResults));
}
else if (data.endpoint == "comment")
{
return(ChainStringAsync(data, services.comment, requester, previousResults));
}
else if (data.endpoint == "activity")
{
return(ChainStringAsync(data, services.activity, requester, previousResults));
}
else if (data.endpoint == "commentaggregate")
{
return(ChainStringAsync <CommentSearch, CommentAggregateView>(data, (s) => services.comment.SearchAggregateAsync(s, requester), previousResults));
}
else if (data.endpoint == "activityaggregate")
{
return(ChainStringAsync <ActivitySearch, ActivityAggregateView>(data, (s) => services.activity.SearchAggregateAsync(s, requester), previousResults));
}
else if (data.endpoint == "systemaggregate")
{
return(ChainStringAsync <BaseSearch, SystemAggregate>(data, (s) => GetSystemAggregate(s), previousResults));
}
else if (data.endpoint == "watch")
{
return(ChainStringAsync(data, services.watch, requester, previousResults));
}
else if (data.endpoint == "vote")
{
return(ChainStringAsync(data, services.vote, requester, previousResults));
}
else if (data.endpoint == "ban")
{
return(ChainStringAsync(data, services.ban, requester, previousResults));
}
else
{
throw new BadRequestException($"Unknown request: {data.endpoint}");
}
}
