forked from adam/discord-bot-shtik
unit nicknames function
need to add them all to the conversion.json list see #28
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e0283e87f5
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@ -16,24 +16,36 @@ namespace vassago.Conversion
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{
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public static class Converter
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{
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public static string DebugInfo(){
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var convertibles = knownConversions.Select(kc => kc.Item1).Union(knownConversions.Select(kc => kc.Item2)).Union(
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knownAliases.Keys.SelectMany(k => k)).Distinct();
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return $"{convertibles.Count()} convertibles; {string.Join(", ", convertibles)}";
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}
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private delegate decimal Convert1Way(decimal input);
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private static string currencyPath;
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private static ExchangePairs currencyConf = null;
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private static DateTime lastUpdatedCurrency = DateTime.UnixEpoch;
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private static List<Tuple<string, string, Convert1Way, Convert1Way>> knownConversions = new List<Tuple<string, string, Convert1Way, Convert1Way>>()
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{
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new Tuple<string, string, Convert1Way, Convert1Way>("℉", "°C", (f => {return(f- 32.0m) / 1.8m;}), (c => {return 1.8m*c + 32.0m;})),
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};
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private static List<Tuple<string, string, Convert1Way, Convert1Way>> knownConversions = new List<Tuple<string, string, Convert1Way, Convert1Way>>();
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private static Dictionary<List<string>, string> knownAliases = new Dictionary<List<string>, string>(new List<KeyValuePair<List<string>, string>>());
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public static string DebugInfo()
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{
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var convertibles = knownConversions.Select(kc => kc.Item1).Union(knownConversions.Select(kc => kc.Item2)).Union(
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knownAliases.Keys.SelectMany(k => k)).Distinct();
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return $"{convertibles.Count()} convertibles; {string.Join(", ", convertibles)}";
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}
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public static void Load(string currencyPath)
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{
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Converter.currencyPath = currencyPath;
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loadStatic();
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Task.Run(async () =>
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{
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while (true)
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{
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await Task.Delay(TimeSpan.FromHours(8));
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loadCurrency();
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}
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});
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}
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private static void loadStatic()
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{
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knownConversions = new List<Tuple<string, string, Convert1Way, Convert1Way>>();
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knownAliases = new Dictionary<List<string>, string>(new List<KeyValuePair<List<string>, string>>());
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var convConf = JsonConvert.DeserializeObject<ConversionConfig>(File.ReadAllText("assets/conversion.json"));
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foreach (var unit in convConf.Units)
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{
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@ -43,18 +55,12 @@ namespace vassago.Conversion
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{
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AddLinearPair(lp.item1, lp.item2, lp.factor);
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}
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Task.Run(async () => {
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while(true)
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{
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loadCurrency();
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await Task.Delay(TimeSpan.FromHours(8));
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}
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});
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loadCurrency();
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}
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private static void loadCurrency()
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{
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Console.WriteLine("loading currency exchange data.");
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if(currencyConf != null)
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if (currencyConf != null)
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{
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knownConversions.RemoveAll(kc => kc.Item1 == currencyConf.Base);
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}
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@ -62,38 +68,41 @@ namespace vassago.Conversion
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{
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currencyConf = JsonConvert.DeserializeObject<ExchangePairs>(File.ReadAllText(currencyPath));
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if(!knownAliases.ContainsValue(currencyConf.Base))
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if (!knownAliases.ContainsValue(currencyConf.Base))
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{
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knownAliases.Add(new List<string>() { currencyConf.Base.ToLower() }, currencyConf.Base);
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}
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foreach (var rate in currencyConf.rates)
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{
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if(!knownAliases.ContainsValue(rate.Key))
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if (!knownAliases.ContainsValue(rate.Key))
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{
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knownAliases.Add(new List<string>() { rate.Key.ToLower() }, rate.Key);
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}
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AddLinearPair(currencyConf.Base, rate.Key, rate.Value);
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Console.WriteLine($"{rate.Key.ToLower()} alias of {rate.Key}");
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}
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}
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}
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public static string Convert(decimal numericTerm, string sourceunit, string destinationUnit)
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{
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var normalizedSourceUnit = NormalizeUnit(sourceunit);
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if (string.IsNullOrWhiteSpace(normalizedSourceUnit))
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var normalizationAttempt = NormalizeUnit(sourceunit);
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if (normalizationAttempt.Item2 != null)
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{
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return $"parse failure: what's {sourceunit}?";
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return $"problem with {sourceunit}: {normalizationAttempt.Item2}";
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}
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var normalizedDestUnit = NormalizeUnit(destinationUnit);
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if (string.IsNullOrWhiteSpace(normalizedDestUnit))
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var normalizedSourceUnit = normalizationAttempt.Item1;
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normalizationAttempt = NormalizeUnit(destinationUnit);
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if (normalizationAttempt.Item2 != null)
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{
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return $"parse failure: what's {destinationUnit}?";
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return $"problem with {destinationUnit}: {normalizationAttempt.Item2}";
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}
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var normalizedDestUnit = normalizationAttempt.Item1;
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if (normalizedSourceUnit == normalizedDestUnit)
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{
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return $"source and dest are the same, so... {numericTerm} {normalizedDestUnit}?";
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}
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var foundPath = exhaustiveBreadthFirst(normalizedDestUnit, new List<string>() { normalizedSourceUnit })?.ToList();
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if (foundPath != null)
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@ -118,7 +127,7 @@ namespace vassago.Conversion
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}
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else
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{
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if(String.Format("{0:G3}", accumulator).Contains("E-"))
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if (String.Format("{0:G3}", accumulator).Contains("E-"))
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{
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return $"{accumulator} {normalizedDestUnit}";
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}
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@ -130,21 +139,34 @@ namespace vassago.Conversion
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}
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return "dimensional analysis failure - I know those units but can't find a path between them.";
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}
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private static string NormalizeUnit(string unit)
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private static Tuple<string, string> NormalizeUnit(string unit)
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{
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if(string.IsNullOrWhiteSpace(unit))
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return null;
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if (string.IsNullOrWhiteSpace(unit))
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return new(null, "no unit provided");
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var normalizedUnit = unit.ToLower();
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if (knownConversions.FirstOrDefault(c => c.Item1 == normalizedUnit || c.Item2 == normalizedUnit) != null)
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{
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return normalizedUnit;
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return new(normalizedUnit, null);
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}
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//if "unit" isn't a canonical name...
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if (!knownAliases.ContainsValue(normalizedUnit))
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{
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var key = knownAliases.Keys.FirstOrDefault(listkey => listkey.Contains(normalizedUnit));
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if (key != null)
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//then we look through aliases...
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var keys = knownAliases.Keys.Where(listkey => listkey.Contains(normalizedUnit));
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if (keys?.Count() > 1)
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{
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return knownAliases[key];
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var sb = new StringBuilder();
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sb.Append($"{normalizedUnit} could refer to any of");
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foreach (var key in keys)
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{
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sb.Append($" {knownAliases[key]}");
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}
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return new(null, sb.ToString());
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}
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else if (keys.Count() == 1)
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{
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//for the canonical name.
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return new(knownAliases[keys.First()], null);
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}
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}
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if (normalizedUnit.EndsWith("es"))
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@ -155,7 +177,7 @@ namespace vassago.Conversion
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{
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return NormalizeUnit(normalizedUnit.Substring(0, normalizedUnit.Length - 1));
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}
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return null;
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return new(null, "couldn't find unit");
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}
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private static IEnumerable<string> exhaustiveBreadthFirst(string dest, IEnumerable<string> currentPath)
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{
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@ -170,9 +192,9 @@ namespace vassago.Conversion
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{
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if (conv.Item1 == last && currentPath.Contains(conv.Item2) == false && conv.Item3 != null)
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{
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var test = exhaustiveBreadthFirst(dest, currentPath.Append(conv.Item2));
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if (test != null)
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return test;
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var test = exhaustiveBreadthFirst(dest, currentPath.Append(conv.Item2));
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if (test != null)
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return test;
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}
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if (conv.Item2 == last && currentPath.Contains(conv.Item1) == false && conv.Item4 != null)
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{
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@ -191,4 +213,4 @@ namespace vassago.Conversion
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));
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}
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}
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}
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}
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@ -245,6 +245,21 @@
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"aliases":[
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"uj"
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]
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},
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{
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"canonical":"USD",
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"aliases":[
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"american dollars",
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"dollar"
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]
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},
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{
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"canonical": "CAD",
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"aliases": [
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"canadian dollars",
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"dollar",
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"maple syrup money"
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]
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}
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],
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"linearPairs":[
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@ -304,4 +319,4 @@
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{"item1":"atm", "item2":"Pa", "factor":101325},
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{"item1":"bar", "item2":"psi", "factor":14.5038}
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]
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}
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}
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