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272
Shared/Models/Stateless/Methods/Property.cs
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272
Shared/Models/Stateless/Methods/Property.cs
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namespace View_by_Distance.Shared.Models.Stateless.Methods;
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internal abstract class Property
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{
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internal static (int Season, string seasonName) GetSeason(int dayOfYear)
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{
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(int Season, string seasonName) result = dayOfYear switch
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{
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< 78 => new(0, "Winter"),
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< 171 => new(1, "Spring"),
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< 264 => new(2, "Summer"),
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< 354 => new(3, "Fall"),
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_ => new(4, "Winter")
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};
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return result;
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}
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internal static int GetDeterministicHashCode(byte[] value)
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{
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int result;
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unchecked
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{
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int hash1 = (5381 << 16) + 5381;
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int hash2 = hash1;
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for (int i = 0; i < value.Length; i += 2)
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{
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hash1 = ((hash1 << 5) + hash1) ^ value[i];
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if (i == value.Length - 1)
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break;
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hash2 = ((hash2 << 5) + hash2) ^ value[i + 1];
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}
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result = hash1 + (hash2 * 1566083941);
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}
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return result;
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}
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internal static int GetDeterministicHashCode(string value)
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{
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int result;
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unchecked
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{
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int hash1 = (5381 << 16) + 5381;
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int hash2 = hash1;
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for (int i = 0; i < value.Length; i += 2)
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{
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hash1 = ((hash1 << 5) + hash1) ^ value[i];
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if (i == value.Length - 1)
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break;
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hash2 = ((hash2 << 5) + hash2) ^ value[i + 1];
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}
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result = hash1 + (hash2 * 1566083941);
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}
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return result;
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}
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internal static (bool?, string[]) IsWrongYear(string[] segments, string year)
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{
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bool? result;
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string[] results = (
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from l
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in segments
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where l?.Length > 2
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&& (
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l[..2] is "19" or "20"
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|| (l.Length == 5 && l.Substring(1, 2) is "19" or "20" && (l[0] is '~' or '=' or '-' or '^' or '#'))
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|| (l.Length == 6 && l[..2] is "19" or "20" && l[4] == '.')
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|| (l.Length == 7 && l.Substring(1, 2) is "19" or "20" && l[5] == '.')
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)
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select l
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).ToArray();
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string[] matches = (
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from l
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in results
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where l == year
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|| (l.Length == 5 && l.Substring(1, 4) == year && (l[0] is '~' or '=' or '-' or '^' or '#'))
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|| (l.Length == 6 && l[..4] == year && l[4] == '.')
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|| (l.Length == 7 && l.Substring(1, 4) == year && l[5] == '.')
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select l
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).ToArray();
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if (!results.Any())
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result = null;
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else
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result = !matches.Any();
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return new(result, results);
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}
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internal static List<DateTime> GetDateTimes(DateTime creationTime, DateTime lastWriteTime, DateTime? dateTime, DateTime? dateTimeDigitized, DateTime? dateTimeOriginal, DateTime? gpsDateStamp)
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{
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List<DateTime> results = new()
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{
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creationTime,
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lastWriteTime
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};
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if (dateTime.HasValue)
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results.Add(dateTime.Value);
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if (dateTimeDigitized.HasValue)
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results.Add(dateTimeDigitized.Value);
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if (dateTimeOriginal.HasValue)
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results.Add(dateTimeOriginal.Value);
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if (gpsDateStamp.HasValue)
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results.Add(gpsDateStamp.Value);
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return results;
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}
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internal static DateTime GetDateTime(Models.Property? property)
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{
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DateTime result;
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if (property is null)
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result = DateTime.MinValue;
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else
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{
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List<DateTime> dateTimes = new()
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{
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property.CreationTime,
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property.LastWriteTime
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};
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if (property.DateTime.HasValue)
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dateTimes.Add(property.DateTime.Value);
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if (property.DateTimeDigitized.HasValue)
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dateTimes.Add(property.DateTimeDigitized.Value);
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if (property.DateTimeOriginal.HasValue)
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dateTimes.Add(property.DateTimeOriginal.Value);
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if (property.GPSDateStamp.HasValue)
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dateTimes.Add(property.GPSDateStamp.Value);
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result = dateTimes.Min();
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}
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return result;
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}
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internal static DateTime GetMinimumDateTime(Models.Property? property)
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{
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DateTime result;
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List<DateTime> dateTimes;
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if (property is null)
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result = DateTime.MinValue;
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else
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{
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dateTimes = IProperty.GetDateTimes(property);
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result = dateTimes.Min();
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}
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return result;
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}
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internal static string GetDiffRootDirectory(string diffPropertyDirectory)
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{
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string result = string.Empty;
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string results = " - Results";
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string? checkDirectory = diffPropertyDirectory;
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for (int i = 0; i < int.MaxValue; i++)
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{
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checkDirectory = Path.GetDirectoryName(checkDirectory);
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if (string.IsNullOrEmpty(checkDirectory))
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break;
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if (checkDirectory.EndsWith(results))
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{
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result = checkDirectory[..^results.Length];
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break;
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}
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}
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return result;
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}
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internal static double GetStandardDeviation(IEnumerable<long> values, double average)
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{
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double result = 0;
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if (!values.Any())
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throw new Exception("Collection must have at least one value!");
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double sum = values.Sum(l => (l - average) * (l - average));
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result = Math.Sqrt(sum / values.Count());
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return result;
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}
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private static long GetThreeStandardDeviationHigh(ref List<long> ticksCollection, long min)
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{
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long result;
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ticksCollection = (from l in ticksCollection select l - min).ToList();
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double sum = ticksCollection.Sum();
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double average = sum / ticksCollection.Count;
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double standardDeviation = GetStandardDeviation(ticksCollection, average);
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result = (long)Math.Ceiling(average + min + (standardDeviation * 3));
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return result;
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}
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internal static TimeSpan GetThreeStandardDeviationHigh(int minimum, Models.Container container)
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{
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TimeSpan result;
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DateTime? minimumDateTime;
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List<long> ticksCollection = new();
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foreach (Models.Item item in container.Items)
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{
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if (item.Property is null)
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continue;
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minimumDateTime = GetMinimumDateTime(item.Property);
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if (minimumDateTime is null)
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continue;
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ticksCollection.Add(minimumDateTime.Value.Ticks);
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}
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long threeStandardDeviationHigh;
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long min;
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if (!ticksCollection.Any())
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min = 0;
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else
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min = ticksCollection.Min();
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if (ticksCollection.Count < minimum)
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threeStandardDeviationHigh = long.MaxValue;
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else
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threeStandardDeviationHigh = GetThreeStandardDeviationHigh(ref ticksCollection, min);
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result = new TimeSpan(threeStandardDeviationHigh - min);
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return result;
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}
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internal static (int, List<DateTime>, List<Models.Item>) Get(Models.Container container, TimeSpan threeStandardDeviationHigh, int i)
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{
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List<Models.Item> results = new();
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int j = i;
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long? ticks;
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Models.Item item;
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TimeSpan timeSpan;
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Models.Item nextItem;
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DateTime? minimumDateTime;
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DateTime? nextMinimumDateTime;
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List<DateTime> dateTimes = new();
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for (; j < container.Items.Count; j++)
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{
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ticks = null;
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item = container.Items[j];
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if (item.Property is null)
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continue;
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minimumDateTime = GetMinimumDateTime(item.Property);
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if (minimumDateTime is null)
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continue;
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for (int k = j + 1; k < container.Items.Count; k++)
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{
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nextItem = container.Items[k];
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if (nextItem.Property is null)
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continue;
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nextMinimumDateTime = GetMinimumDateTime(nextItem.Property);
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if (nextMinimumDateTime is null)
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continue;
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ticks = nextMinimumDateTime.Value.Ticks;
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break;
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}
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results.Add(item);
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dateTimes.Add(minimumDateTime.Value);
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if (ticks.HasValue)
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{
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timeSpan = new(ticks.Value - minimumDateTime.Value.Ticks);
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if (timeSpan > threeStandardDeviationHigh)
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break;
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}
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}
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return new(j, dateTimes, results);
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}
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internal static bool Any(List<Models.Container> propertyHolderCollections)
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{
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bool result = false;
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foreach (Models.Container container in propertyHolderCollections)
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{
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if (!container.Items.Any())
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continue;
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if ((from l in container.Items where l.Any() select true).Any())
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{
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result = true;
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break;
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}
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}
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return result;
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}
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}
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