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Adding a shared library for common classes

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This commit is contained in:
Brandon Watson
2021-04-12 20:58:44 -04:00
parent 6b14d1264a
commit 4acf091511
28 changed files with 587 additions and 325 deletions
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126
aurora-cradle-sharp/AuroraCradle/Src/Cursor/Cursor.cs
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@ -1,126 +0,0 @@
using System;
using System.Collections.Generic;
using System.Linq;
#nullable enable
namespace Aurora.Cursor
{
public enum SortDirection
{
Asc,
Desc,
}
public class Cursor<T> where T : ICursorObject
{
private CursorList<T> _list;
private string? _previousPageToken;
private string? _nextPageToken;
private int _pageSize;
private Func<KeyValuePair<string, T>, string> _sortDelgate;
private SortDirection _direction;
public Cursor(ref CursorList<T> list)
{
this._list = list;
this._previousPageToken = string.Empty;
this._nextPageToken = string.Empty;
this._pageSize = 10;
this._sortDelgate = delegate (KeyValuePair<string, T> item)
{
return item.Key;
};
}
public CursorResult<T> GetNextPage()
{
if (this._pageSize < 0)
{
throw new InvalidOperationException("Page Size must be greater than zero");
}
List<KeyValuePair<string, T>> tmpList;
// Sort reference list
if (this._direction == SortDirection.Desc)
{
tmpList = this._list.OrderByDescending(this._sortDelgate).ToList();
}
else
{
tmpList = this._list.OrderBy(this._sortDelgate).ToList();
}
if (tmpList == null)
{
throw new System.NullReferenceException();
}
int startIdx = 0;
if (!string.IsNullOrEmpty(this._nextPageToken))
{
// TODO find another way to index into the list that's not a regular array search
startIdx = tmpList.FindIndex(item => item.Key == this._nextPageToken) + 1;
}
int adjustedSize = this._pageSize;
if (startIdx + this._pageSize > tmpList.Count)
{
adjustedSize = this._pageSize - ((startIdx + _pageSize) - tmpList.Count);
}
List<KeyValuePair<string, T>> selection = new List<KeyValuePair<string, T>>();
if (adjustedSize != 0)
{
selection = tmpList.GetRange(startIdx, adjustedSize);
}
return new CursorResult<T>
{
NextPageToken = this._pageSize == selection.Count ? selection[selection.Count - 1].Key : string.Empty,
PrevPageToken = string.Empty,
Count = this._list.Count,
Result = selection.ConvertAll(item => item.Value)
};
}
public CursorResult<T> GetPreviousPage()
{
throw new NotImplementedException();
}
public Cursor<T> WithNextPageToken(string nextPageToken)
{
this._nextPageToken = nextPageToken;
return this;
}
public Cursor<T> WithPreviousPageToken(string prevPageToken)
{
this._previousPageToken = prevPageToken;
return this;
}
public Cursor<T> WithSort(Func<KeyValuePair<string, T>, string> sortDelegate, SortDirection direction)
{
this._sortDelgate = sortDelegate;
this._direction = direction;
return this;
}
public Cursor<T> WithSort(string key, SortDirection direction)
{
this._sortDelgate = (item) => key;
this._direction = direction;
return this;
}
public Cursor<T> WithSize(int size)
{
this._pageSize = size;
return this;
}
}
}

37
aurora-cradle-sharp/AuroraCradle/Src/Cursor/CursorList.cs
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@ -1,37 +0,0 @@
using System.Collections.Generic;
using System.Collections;
using System;
using System.Linq;
using Aurora.Utils;
#nullable enable
namespace Aurora.Cursor
{
public class CursorList<T> : SortedList<string, T> where T : ICursorObject
{
public CursorList()
{
}
public CursorList<T> Add(T item)
{
string id = item.Id;
if (item.Id == null)
{
id = HashUtil.GetHash(new string[] { item.GetHashCode().ToString() }).ToString();
item.Id = id;
}
bool res = this.TryAdd(id, item);
if (res == false)
{
throw new System.Exception("Failed to add item to cursor list");
}
return this;
}
}
}

9
aurora-cradle-sharp/AuroraCradle/Src/Cursor/CursorObject.cs
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@ -1,9 +0,0 @@
using System.Collections.Generic;
namespace Aurora.Cursor
{
public interface ICursorObject
{
string Id { get; set; }
}
}

25
aurora-cradle-sharp/AuroraCradle/Src/Cursor/CursorResult.cs
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@ -1,25 +0,0 @@
using System.Collections.Generic;
namespace Aurora.Cursor
{
public class CursorResult<T>
{
public CursorResult()
{
Result = new List<T>();
}
public CursorResult(CursorResult<T> cpy)
{
NextPageToken = cpy.NextPageToken;
PrevPageToken = cpy.PrevPageToken;
Result = cpy.Result;
Count = cpy.Count;
}
public string NextPageToken { get; set; }
public string PrevPageToken { get; set; }
public List<T> Result { get; set; }
public int Count { get; set; }
}
}

25
aurora-cradle-sharp/AuroraCradle/Src/Utils/HashUtil.cs
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@ -1,25 +0,0 @@
using System.Security.Cryptography;
using System.Text;
using System;
namespace Aurora.Utils
{
public class HashUtil
{
public static Guid GetHash(string[] inputs)
{
string input = "";
foreach (string str in inputs)
{
input += str;
}
byte[] stringbytes = Encoding.UTF8.GetBytes(input);
byte[] hashedBytes = new System.Security.Cryptography
.SHA1CryptoServiceProvider()
.ComputeHash(stringbytes);
Array.Resize(ref hashedBytes, 16);
return new Guid(hashedBytes);
}
}
}