public AStringBuilder emailFromBuffer(byte[] buffer, AStringBuilder sb)
{
var domain = Domains[buffer[buffer.Length - 1]].Name;
for (int i = 0; i < buffer.Length - 1; i++)
{
sb.Append((char)(buffer[i]));
}
sb.Append('@');
sb.Append(domain);
return(sb);
}
private void composeResponse(HttpCtx ctx, List <GroupItem> groupList, int limit)
{
// find and compose the response
var sb = new AStringBuilder(ctx.Buffer, ctx.ResponseBodyStart);
sb.Append("{\"groups\":[");
bool firstGroup = true;
foreach (var g in groupList)
{
if (firstGroup)
{
firstGroup = false;
}
else
{
sb.Append(',');
}
// count - always there
sb.Append("{\"count\":").Append(g.Count);
// sex
if (g.sex > 0)
{
sb.Append(",\"sex\":\"").Append(g.ASex).Append('"');
}
if (g.status > 0)
{
sb.Append(",\"status\":\"").Append(g.AStatus).Append('"');
}
if (g.city > 0)
{
sb.Append(",\"city\":\"").Append(g.ACity).Append('"');
}
if (g.country > 0)
{
sb.Append(",\"country\":\"").Append(g.ACountry).Append('"');
}
if (g.interest > 0)
{
sb.Append(",\"interests\":\"").Append(g.AInterest).Append('"');
}
sb.Append('}');
if (--limit == 0)
{
break; // enough
}
}
sb.Append("]}");
ctx.ResponseBodyLength = sb.Count;
}
// synchronously process the request, fill up responseBuffer, and return statusCode
public int Process(HttpCtx ctx, int id)
{
var startTime = Stats.Watch.Elapsed;
var limit = 0;
if (!Mapper.ExtIdToIntId(id, out id))
{
return(404); // no mapping found
}
var acct = store.Accounts[id];
if (acct.IsEmpty())
{
return(404); // no such user
}
var flags = new SuggestQueryMask();
var cityIdx = 0;
var countryIdx = 0;
bool empty = false;
foreach (var query in ctx.Params)
{
var value = query.Value;
if (value.IsEmpty)
{
return(400);
}
if (query.Key == "query_id")
{
} // ignore
else
if (query.Key == "limit")
{
if (!value.TryToInt(out limit))
{
return(400);
}
}
else
if (query.Key == "country")
{
if (value.IsEmpty)
{
return(400);
}
if (store.Countries.TryGetValue(value, out IRange countryInd))
{
countryIdx = countryInd.Index;
}
else
{
empty = true;
}
flags |= SuggestQueryMask.Country;
}
else
if (query.Key == "city")
{
if (value.IsEmpty)
{
return(400);
}
if (store.Cities.TryGetValue(value, out var cityBm))
{
cityIdx = cityBm.Index;
}
else
{
empty = true;
}
flags |= SuggestQueryMask.City;
}
else // all other parameters are invalid
{
return(400);
}
}
if (limit <= 0)
{
return(400);
}
if (empty || acct.LikesCount == 0) // shortcut
{
return(211); // empty accounts
}
// first, create the list of suggesters and find their similarity value
var acctLikes = acct.GetLikes(store);
if (!Pool <List <(int id, double sim)> > .TryGet(out var suggesters))
{
suggesters = new List <(int id, double sim)>(4096);
}
for (int i = 0; i < acctLikes.Count; i++)
{
var q = store.Accounts[acctLikes[i].GetId()];
foreach (var suggester in q.GetLikedBy(store))
{
var a = store.Accounts[suggester];
if (suggester != id && // can't suggest to myself
a.IsMale() == acct.IsMale() && // suggester must be same gender
(cityIdx == 0 || cityIdx == a.CityIdx) && // from the specified city
(countryIdx == 0 || countryIdx == a.CountryIdx)) // from the specified country
{
#if false
long key = id < suggester ? (id + ((long)suggester << 32)) : (suggester + ((long)id << 32));
if (!store.CachedSim.TryGetValue(key, out var similarity))
{
// if it's a new suggester, calculate his similarity
similarity = calcSimilarity(acctLikes, a.GetLikes(store));
store.CachedSim.Add(key, similarity);
}
#else
// if it's a new suggester, calculate his similarity
var similarity = calcSimilarity(acctLikes, a.GetLikes(store));
//store.CachedSim.Add(key, similarity);
#endif
if (similarity > 0)
{
suggesters.Add((suggester, similarity));
}
}
}
}
// suggesters is sorted by id, now, sort it by descending similarity then by ascending ids
suggesters.Sort((x, y) => y.sim.CompareTo(x.sim));
// compose the response
var sb = new AStringBuilder(ctx.Buffer, ctx.ResponseBodyStart);
sb.Append("{\"accounts\":[");
bool firstEl = true;
// form the list of suggestions
var suggestions = new List <int>(limit);
var lastSuggester = 0;
foreach (var kv in suggesters)
{
if (kv.id == lastSuggester)
{
continue;
}
else
{
lastSuggester = kv.id;
}
var a = store.Accounts[kv.id];
var aLikes = a.GetLikes(store);
// now, add suggested likes that were not yet liked by acct
for (int k = aLikes.Count - 1; k >= 0; k--)
{
var l0 = aLikes[k];
if (l0.GetId() == id)
{
continue;
}
var j1 = Array.BinarySearch(store.Likes, acct.LikesIdx, acct.LikesCount, l0, Like.CompareById);
if (j1 < 0) // suggest only not already liked accounts
{
if (!suggestions.Contains(l0.GetId()))
{
suggestions.Add(l0.GetId());
outputAccount(l0.GetId(), sb, ref firstEl);
if (suggestions.Count == limit)
{
break;
}
}
}
}
if (suggestions.Count >= limit)
{
break;
}
}
suggesters.Clear();
Pool <List <(int, double)> > .Release(suggesters);
// finalize the output
sb.Append("]}");
ctx.ResponseBodyLength = sb.Count;
var stopTime = Stats.Watch.Elapsed;
ctx.ContextType = "GetSuggest";
return(200);
}
private void outputAccount(int i, AStringBuilder sb, ref bool firstEl)
{
var a = store.Accounts[i];
if (firstEl)
{
firstEl = false;
}
else
{
sb.Append(',');
}
// id (always present)
sb.Append("{\"id\":").Append(Mapper.IntIdToExtId(i)).Append(',');
// email
sb.Append("\"email\":");
if (a.Email == null)
{
sb.Append("null");
}
else
{
sb.Append('"');
store.emailFromBuffer(a.Email, sb);
sb.Append("\",");
}
// fname
if (a.FNameIdx > 0)
{
sb.Append("\"fname\":\"").Append(store.Fnames[a.FNameIdx].AName).Append("\",");
}
// sname
if (a.SNameIdx != 0)
{
sb.Append("\"sname\":\"").Append(store.Snames[a.SNameIdx].AName).Append("\",");
}
// status
sb.Append("\"status\":\"");
if (a.IsFree())
{
sb.Append(DtoAccount.s_Free);
}
else
if (a.IsTaken())
{
sb.Append(DtoAccount.s_Taken);
}
else
{
sb.Append(DtoAccount.s_Complicated);
}
sb.Append("\"}");
}
private void composeResults(HttpCtx ctx, List <int> ids, FilterQueryMask flags, int limit)
{
// find and compose the response
var sb = new AStringBuilder(ctx.Buffer, ctx.ResponseBodyStart);
sb.Append("{\"accounts\":[");
bool firstEl = true;
foreach (int id in ids)
{
var acct = store.Accounts[id];
if (firstEl)
{
firstEl = false;
}
else
{
sb.Append(',');
}
// id (always present)
sb.Append("{\"id\":").Append(Mapper.IntIdToExtId(id)).Append(',');
// sex
if (flags.HasFlag(FilterQueryMask.Sex_eq))
{
sb.Append(store.Male[id] ? "\"sex\":\"m\"," : "\"sex\":\"f\",");
}
// status
if (flags.HasFlag(FilterQueryMask.Status_eq))
{
sb.Append("\"status\":\"");
if (store.Free[id])
{
sb.Append(DtoAccount.s_Free);
}
else
if (store.Taken[id])
{
sb.Append(DtoAccount.s_Taken);
}
else
{
sb.Append(DtoAccount.s_Complicated);
}
sb.Append("\",");
}
// fname
if (acct.FNameIdx > 0 && (
flags.HasFlag(FilterQueryMask.Fname_eq) ||
flags.HasFlag(FilterQueryMask.Fname_any) ||
flags.HasFlag(FilterQueryMask.Fname_null)))
{
sb.Append("\"fname\":\"").Append(store.Fnames[acct.FNameIdx].AName).Append("\",");
}
// sname
if (acct.SNameIdx != 0 && (
flags.HasFlag(FilterQueryMask.Sname_eq) ||
flags.HasFlag(FilterQueryMask.Sname_starts) ||
flags.HasFlag(FilterQueryMask.Sname_null)))
{
sb.Append("\"sname\":\"").Append(store.Snames[acct.SNameIdx].AName).Append("\",");
}
// phone
if (acct.Phone != null && (
flags.HasFlag(FilterQueryMask.Phone_code) ||
flags.HasFlag(FilterQueryMask.Phone_null)))
{
sb.Append("\"phone\":\"").Append(acct.Phone).Append("\",");
}
// country
if (acct.CountryIdx > 0 && (
flags.HasFlag(FilterQueryMask.Country_eq) ||
flags.HasFlag(FilterQueryMask.Country_null)))
{
sb.Append("\"country\":\"").Append(store.Countries[acct.CountryIdx].AName).Append("\",");
}
// city
if (acct.CityIdx > 0 && (
flags.HasFlag(FilterQueryMask.City_eq) ||
flags.HasFlag(FilterQueryMask.City_any) ||
flags.HasFlag(FilterQueryMask.City_null)))
{
sb.Append("\"city\":\"").Append(store.Cities[acct.CityIdx].AName).Append("\",");
}
// birth
if (flags.HasFlag(FilterQueryMask.Birth_ltgt) ||
flags.HasFlag(FilterQueryMask.Birth_year))
{
sb.Append("\"birth\":").Append(acct.Birth).Append(',');
}
// premium
if (flags.HasFlag(FilterQueryMask.Premium_now) ||
flags.HasFlag(FilterQueryMask.Premium_null))
{
if (acct.PStart != 0 || acct.PFinish != 0)
{
sb.Append("\"premium\":{\"start\":").Append(acct.PStart).Append(",\"finish\":").Append(acct.PFinish).Append("},");
}
}
// email
sb.Append("\"email\":");
if (acct.Email == null)
{
sb.Append("null");
}
else
{
sb.Append('"');
store.emailFromBuffer(acct.Email, sb);
sb.Append('"');
}
// interests and likes are not required
sb.Append('}');
if (--limit <= 0)
{
break;
}
}
sb.Append("]}");
ctx.ResponseBodyLength = sb.Count;
}
// synchronously process the request, fill up responseBuffer, and return statusCode
public int Process(HttpCtx ctx, int id)
{
var limit = 0;
if (!Mapper.ExtIdToIntId(id, out id))
{
return(404); // no mapping exists
}
var finder = new Finder(store.All);
finder.AndBitmap(store.PremiumFreeMale); // placeholder, to be replaced for each category
var flags = new RecommendQueryMask();
var startTime = Stats.Watch.Elapsed;
foreach (var query in ctx.Params)
{
var value = query.Value;
if (value.IsEmpty)
{
return(400);
}
if (query.Key == "query_id")
{
} // ignore
else
if (query.Key == "limit")
{
if (!value.TryToInt(out limit))
{
return(400);
}
}
else
if (query.Key == "country")
{
if (value.IsEmpty)
{
return(400);
}
if (store.Countries.TryGetValue(value, out IRange countryInd))
{
finder.AndBitmap(countryInd as BitMap);
}
else
{
finder.AndBitmap(null);
}
flags |= RecommendQueryMask.Country;
}
else
if (query.Key == "city")
{
if (value.IsEmpty)
{
return(400);
}
if (store.Cities.TryGetValue(value, out var cityBm))
{
finder.AndBitmap(cityBm as BitMap);
}
else
{
finder.AndBitmap(null);
}
flags |= RecommendQueryMask.City;
}
else // all other parameters are invalid
{
return(400);
}
}
if (limit <= 0)
{
return(400);
}
var acct = store.Accounts[id];
if (acct.IsEmpty())
{
return(404); // no such user
}
if (acct.InterestMask.Count == 0)
{
return(211); // no interests => zero compatibility
}
if (finder.DefaultBitmap == null || acct.InterestMask.Count == 0) // shortcut
{
return(211); // empty accounts
}
#if false
finder.AddCondition(i => acct.InterestMask.Any(store.Accounts[i].InterestMask), 0);
#else
for (int i = 1; i < BitMap96.MAX_BITS; i++)
{
if (acct.InterestMask.IsSet(i))
{
finder.OrBitmap(0, store.Interests[i] as BitMap);
}
}
#endif
var findContext = new FindContext(store, finder, acct, limit);
for (int category = 1; category <= 6; category++)
{
if (findContext.Select(category) >= limit)
{
break;
}
}
// compose the response
var sb = new AStringBuilder(ctx.Buffer, ctx.ResponseBodyStart);
sb.Append("{\"accounts\":[");
bool firstEl = true;
// pick first limit users from selected
foreach (var kv in findContext.Selected)
{
var i = kv.Value;
var a = store.Accounts[i];
if (firstEl)
{
firstEl = false;
}
else
{
sb.Append(',');
}
// id (always present)
sb.Append("{\"id\":").Append(Mapper.IntIdToExtId(i)).Append(',');
// email
sb.Append("\"email\":");
if (a.Email == null)
{
sb.Append("null");
}
else
{
sb.Append('"');
store.emailFromBuffer(a.Email, sb);
sb.Append("\",");
}
// status
sb.Append("\"status\":\"");
if (a.IsFree())
{
sb.Append(DtoAccount.s_Free);
}
else
if (a.IsTaken())
{
sb.Append(DtoAccount.s_Taken);
}
else
{
sb.Append(DtoAccount.s_Complicated);
}
sb.Append("\",");
// fname
if (a.FNameIdx > 0)
{
sb.Append("\"fname\":\"").Append(store.Fnames[a.FNameIdx].AName).Append("\",");
}
// sname
if (a.SNameIdx > 0)
{
sb.Append("\"sname\":\"").Append(store.Snames[a.SNameIdx].AName).Append("\",");
}
// premium
if (store.PremiumYes[i])
{
sb.Append("\"premium\":{\"start\":").Append(a.PStart).Append(",\"finish\":").Append(a.PFinish).Append("},");
}
// birth
sb.Append("\"birth\":").Append(a.Birth).Append('}');
}
;
// finalize the output
sb.Append("]}");
ctx.ResponseBodyLength = sb.Count;
var stopTime = Stats.Watch.Elapsed;
ctx.ContextType = "GetRecommend";
return(200);
}