| | | 1 | | using Fluorite.Extensions; |
| | | 2 | | using Fluorite.Strainer.Models.Sorting; |
| | | 3 | | |
| | | 4 | | namespace Fluorite.Strainer.Services.Sorting; |
| | | 5 | | |
| | | 6 | | /// <summary> |
| | | 7 | | /// Provides sorting way formatter based on presence of descending prefix. |
| | | 8 | | /// </summary> |
| | | 9 | | public class DescendingPrefixSortingWayFormatter : ISortingWayFormatter |
| | | 10 | | { |
| | | 11 | | /// <summary> |
| | | 12 | | /// The prefix used to mark a descending sorting term by this formatter. |
| | | 13 | | /// <para/> |
| | | 14 | | /// This field is readonly. |
| | | 15 | | /// </summary> |
| | | 16 | | public const string DescendingPrefix = "-"; |
| | | 17 | | |
| | | 18 | | /// <summary> |
| | | 19 | | /// Initializes a new instance of the <see cref="DescendingPrefixSortingWayFormatter"/> |
| | | 20 | | /// class. |
| | | 21 | | /// </summary> |
| | 19 | 22 | | public DescendingPrefixSortingWayFormatter() |
| | | 23 | | { |
| | | 24 | | |
| | 19 | 25 | | } |
| | | 26 | | |
| | | 27 | | /// <inheritdoc/> |
| | | 28 | | /// <exception cref="ArgumentNullException"> |
| | | 29 | | /// <paramref name="input"/> is <see langword="null" />. |
| | | 30 | | /// </exception> |
| | | 31 | | public string Format(string input, SortingWay sortingWay) |
| | | 32 | | { |
| | 7 | 33 | | Guard.Against.Null(input); |
| | | 34 | | |
| | 6 | 35 | | if (string.IsNullOrWhiteSpace(input)) |
| | | 36 | | { |
| | 4 | 37 | | return input; |
| | | 38 | | } |
| | | 39 | | |
| | 2 | 40 | | return sortingWay == SortingWay.Descending |
| | 2 | 41 | | ? DescendingPrefix + input |
| | 2 | 42 | | : input; |
| | | 43 | | } |
| | | 44 | | |
| | | 45 | | /// <inheritdoc/> |
| | | 46 | | /// <exception cref="ArgumentNullException"> |
| | | 47 | | /// <paramref name="input"/> is <see langword="null" />. |
| | | 48 | | /// </exception> |
| | | 49 | | public SortingWay? GetSortingWay(string input) |
| | | 50 | | { |
| | 5 | 51 | | Guard.Against.Null(input); |
| | | 52 | | |
| | 4 | 53 | | if (string.IsNullOrWhiteSpace(input)) |
| | | 54 | | { |
| | 2 | 55 | | return null; |
| | | 56 | | } |
| | | 57 | | |
| | 2 | 58 | | if (input.StartsWith(DescendingPrefix)) |
| | | 59 | | { |
| | 1 | 60 | | return SortingWay.Descending; |
| | | 61 | | } |
| | | 62 | | |
| | 1 | 63 | | return SortingWay.Ascending; |
| | | 64 | | } |
| | | 65 | | |
| | | 66 | | /// <inheritdoc/> |
| | | 67 | | /// <exception cref="ArgumentNullException"> |
| | | 68 | | /// <paramref name="input"/> is <see langword="null"/>. |
| | | 69 | | /// </exception> |
| | | 70 | | public string Unformat(string input, SortingWay sortingWay) |
| | | 71 | | { |
| | 6 | 72 | | Guard.Against.Null(input); |
| | | 73 | | |
| | 5 | 74 | | if (string.IsNullOrEmpty(input)) |
| | | 75 | | { |
| | 1 | 76 | | return input; |
| | | 77 | | } |
| | | 78 | | |
| | 4 | 79 | | return input.TrimStartOnce(DescendingPrefix); |
| | | 80 | | } |
| | | 81 | | } |