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#include "schema_gateway.h"
#include <yql/essentials/sql/v1/complete/text/case.h>
#include <util/charset/utf8.h>
namespace NSQLComplete {
namespace {
class TSchemaGateway: public ISchemaGateway {
static constexpr size_t MaxLimit = 4 * 1024;
public:
explicit TSchemaGateway(THashMap<TString, TVector<TFolderEntry>> data)
: Data_(std::move(data))
{
for (const auto& [k, _] : Data_) {
Y_ENSURE(k.StartsWith("/"), k << " must start with the '/'");
Y_ENSURE(k.EndsWith("/"), k << " must end with the '/'");
}
}
NThreading::TFuture<TListResponse> List(const TListRequest& request) const override {
auto [path, prefix] = ParsePath(request.Path);
TVector<TFolderEntry> entries;
if (const auto* data = Data_.FindPtr(path)) {
entries = *data;
}
EraseIf(entries, [prefix = ToLowerUTF8(prefix)](const TFolderEntry& entry) {
return !entry.Name.StartsWith(prefix);
});
EraseIf(entries, [types = std::move(request.Filter.Types)](const TFolderEntry& entry) {
return types && !types->contains(entry.Type);
});
Y_ENSURE(request.Limit <= MaxLimit);
entries.crop(request.Limit);
TListResponse response = {
.NameHintLength = prefix.size(),
.Entries = std::move(entries),
};
return NThreading::MakeFuture(std::move(response));
}
private:
static std::tuple<TStringBuf, TStringBuf> ParsePath(TString path Y_LIFETIME_BOUND) {
size_t pos = path.find_last_of('/');
if (pos == TString::npos) {
return {"", path};
}
TStringBuf head, tail;
TStringBuf(path).SplitAt(pos + 1, head, tail);
return {head, tail};
}
THashMap<TString, TVector<TFolderEntry>> Data_;
};
} // namespace
ISchemaGateway::TPtr MakeStaticSchemaGateway(THashMap<TString, TVector<TFolderEntry>> fs) {
return MakeIntrusive<TSchemaGateway>(std::move(fs));
}
} // namespace NSQLComplete
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