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| 1 | +using Microsoft.AspNetCore.Components; |
| 2 | +using Microsoft.AspNetCore.Components.Forms; |
| 3 | +using MudBlazor; |
| 4 | +using MudBlazor.Utilities; |
| 5 | +using MudExtensions.Utilities; |
| 6 | +using System.Text; |
| 7 | +using System.Text.RegularExpressions; |
| 8 | + |
| 9 | +namespace MudExtensions |
| 10 | +{ |
| 11 | + //Default fields in your database |
| 12 | + public class MudFieldHeader |
| 13 | + { |
| 14 | + public string Name { get; set; } = ""; |
| 15 | + public bool Required { get; set; } = false; |
| 16 | + public int FieldCount { get; set; } = 0; |
| 17 | + |
| 18 | + public MudFieldHeader(string name) |
| 19 | + { |
| 20 | + Name = name; |
| 21 | + Required = false; |
| 22 | + } |
| 23 | + |
| 24 | + public MudFieldHeader(string name, bool required = false) |
| 25 | + { |
| 26 | + Name = name; |
| 27 | + Required = required; |
| 28 | + } |
| 29 | + } |
| 30 | + |
| 31 | + //Header fields in your CSV File |
| 32 | + public class MudCsvHeader |
| 33 | + { |
| 34 | + public string Name { get; set; } = ""; |
| 35 | + public string MappedField { get; set; } = "File"; |
| 36 | + |
| 37 | + public MudCsvHeader(string name, string mappedField = "File") |
| 38 | + { |
| 39 | + Name = name; |
| 40 | + MappedField = mappedField; |
| 41 | + } |
| 42 | + } |
| 43 | + |
| 44 | + public partial class MudCsvMapper : MudComponentBase |
| 45 | + { |
| 46 | + protected string Classname => |
| 47 | + new CssBuilder("mud-csv-mapper") |
| 48 | + .AddClass(Class) |
| 49 | + .Build(); |
| 50 | + |
| 51 | + /// <summary> |
| 52 | + /// A class for provide all local strings at once. |
| 53 | + /// </summary> |
| 54 | + [Parameter] |
| 55 | + public CsvMapperLocalizedStrings LocalizedStrings { get; set; } = new(); |
| 56 | + |
| 57 | + /// <summary> |
| 58 | + /// Choose Table Column Headers |
| 59 | + /// </summary> |
| 60 | + [Parameter] |
| 61 | + public List<MudFieldHeader> MudFieldHeaders { get; set; } = new(); |
| 62 | + |
| 63 | + private bool _valid = false; |
| 64 | + |
| 65 | + [Parameter] |
| 66 | + public IBrowserFile CsvFile { get; set; } = null; |
| 67 | + |
| 68 | + [Parameter] |
| 69 | + public byte[] FileContentByte { get; set; } |
| 70 | + |
| 71 | + //if you want to see what was mapped use this dictionary |
| 72 | + [Parameter] |
| 73 | + public Dictionary<string, string> CsvMapping { get; set; } = new(); |
| 74 | + |
| 75 | + [Parameter] |
| 76 | + public EventCallback<bool> OnUpload { get; set; } |
| 77 | + |
| 78 | + private static string DefaultDragClass = "relative rounded-lg border-2 border-dashed pa-4 mt-4 mud-width-full mud-height-full z-10"; |
| 79 | + private string DragClass = DefaultDragClass; |
| 80 | + private MudDropContainer<MudCsvHeader> DropContainer; |
| 81 | + private List<string> FileNames = new List<string>(); |
| 82 | + private string HeaderLine = ""; |
| 83 | + List<MudCsvHeader> MudCsvHeaders = new(); |
| 84 | + string FileContentStr; |
| 85 | + |
| 86 | + protected override void OnInitialized() |
| 87 | + { |
| 88 | + base.OnInitialized(); |
| 89 | + } |
| 90 | + |
| 91 | + //TODO SearchFunc |
| 92 | + /// <summary> |
| 93 | + /// The SearchFunc returns a list of items matching the typed text |
| 94 | + /// </summary> |
| 95 | + //[Parameter] |
| 96 | + //public Func<string, string> SearchFunc { get; set; } |
| 97 | + |
| 98 | + private async Task OnInputFileChanged(InputFileChangeEventArgs args) |
| 99 | + { |
| 100 | + ClearDragClass(); |
| 101 | + var files = args.GetMultipleFiles(); |
| 102 | + foreach (var file in files) |
| 103 | + { |
| 104 | + FileNames.Add(file.Name); |
| 105 | + } |
| 106 | + if (files.Count > 0) |
| 107 | + { |
| 108 | + |
| 109 | + long maxFileSize = 1024 * 1024 * 15; |
| 110 | + using var stream = new MemoryStream(); |
| 111 | + var buffer = new byte[files[0].Size]; |
| 112 | + |
| 113 | + using var newFileStream = files[0].OpenReadStream(maxFileSize); |
| 114 | + |
| 115 | + int bytesRead; |
| 116 | + double totalRead = 0; |
| 117 | + |
| 118 | + while ((bytesRead = await newFileStream.ReadAsync(buffer)) != 0) |
| 119 | + { |
| 120 | + totalRead += bytesRead; |
| 121 | + await stream.WriteAsync(buffer, 0, bytesRead); |
| 122 | + } |
| 123 | + |
| 124 | + FileContentByte = stream.GetBuffer(); |
| 125 | + var reader = new StreamReader(new MemoryStream(FileContentByte), Encoding.Default); |
| 126 | + HeaderLine = reader.ReadLine(); |
| 127 | + ReadCSVHeaders(HeaderLine); |
| 128 | + CsvFile = files[0]; |
| 129 | + FileContentStr = reader.ReadToEnd(); |
| 130 | + } |
| 131 | + } |
| 132 | + |
| 133 | + public async Task Upload() |
| 134 | + { |
| 135 | + string NewHeader = HeaderLine; |
| 136 | + for (int i = 0; i < MudCsvHeaders.Count; i++) |
| 137 | + { |
| 138 | + if (MudCsvHeaders[i].MappedField != "File") |
| 139 | + { |
| 140 | + NewHeader = Regex.Replace(NewHeader, String.Format(@"\b{0}\b", MudCsvHeaders[i].Name), MudCsvHeaders[i].MappedField); |
| 141 | + CsvMapping.Add(MudCsvHeaders[i].MappedField, MudCsvHeaders[i].Name); |
| 142 | + } |
| 143 | + } |
| 144 | + |
| 145 | + FileContentStr = NewHeader + "\r\n" + FileContentStr; |
| 146 | + FileContentByte = System.Text.Encoding.UTF8.GetBytes(FileContentStr); |
| 147 | + |
| 148 | + await OnUpload.InvokeAsync(); |
| 149 | + } |
| 150 | + |
| 151 | + public void ReadCSVHeaders(string input) |
| 152 | + { |
| 153 | + Regex csvSplit = new Regex("(?:^|,)(\"(?:[^\"]+|\"\")*\"|[^,]*)", RegexOptions.Compiled); |
| 154 | + |
| 155 | + foreach (Match match in csvSplit.Matches(input)) |
| 156 | + { |
| 157 | + string csvField = match.Value.TrimStart(','); |
| 158 | + bool matchedField = false; |
| 159 | + for (int i = 0; i < MudFieldHeaders.Count; i++) |
| 160 | + { |
| 161 | + //Do an exact match on the fields first |
| 162 | + if (String.Compare(MudFieldHeaders[i].Name, csvField, StringComparison.CurrentCultureIgnoreCase) == 0) |
| 163 | + { |
| 164 | + if (MudFieldHeaders[i].FieldCount == 0) //only match if it hasn't already been matched |
| 165 | + { |
| 166 | + MudCsvHeaders.Add(new MudCsvHeader(csvField, MudFieldHeaders[i].Name)); |
| 167 | + MudFieldHeaders[i].FieldCount++; |
| 168 | + matchedField = true; |
| 169 | + break; |
| 170 | + } |
| 171 | + } |
| 172 | + |
| 173 | + //Then do a Fuzzy match if possible. This works best because sometimes you have fields that are substrings of another field |
| 174 | + //Todo Create an optional Parent Method for Comparison so someone could use a fuzzy name matcher: https://github.com/JakeBayer/FuzzySharp |
| 175 | + //if (FuzzySharp.Fuzz.Ratio(MudFieldHeaders[i].Name.ToLower(), csvField.ToLower()) > 90) |
| 176 | + } |
| 177 | + |
| 178 | + if (matchedField) continue; |
| 179 | + MudCsvHeaders.Add(new MudCsvHeader(csvField)); |
| 180 | + } |
| 181 | + |
| 182 | + IsValid(); |
| 183 | + } |
| 184 | + |
| 185 | + private void SetDragClass() |
| 186 | + { |
| 187 | + DragClass = $"{DefaultDragClass} mud-border-primary"; |
| 188 | + } |
| 189 | + |
| 190 | + private void ClearDragClass() |
| 191 | + { |
| 192 | + DragClass = DefaultDragClass; |
| 193 | + } |
| 194 | + |
| 195 | + /* handling board events */ |
| 196 | + private void TaskUpdated(MudItemDropInfo<MudCsvHeader> mudCSVField) |
| 197 | + { |
| 198 | + string oldMappedField = mudCSVField.Item.MappedField; |
| 199 | + mudCSVField.Item.MappedField = mudCSVField.DropzoneIdentifier; |
| 200 | + |
| 201 | + for (int i = 0; i < MudFieldHeaders.Count; i++) |
| 202 | + { |
| 203 | + if (MudFieldHeaders[i].Name == oldMappedField) |
| 204 | + { |
| 205 | + MudFieldHeaders[i].FieldCount--; |
| 206 | + } |
| 207 | + } |
| 208 | + |
| 209 | + for (int i = 0; i < MudFieldHeaders.Count; i++) |
| 210 | + { |
| 211 | + if (MudFieldHeaders[i].Name == mudCSVField.DropzoneIdentifier) |
| 212 | + { |
| 213 | + MudFieldHeaders[i].FieldCount++; |
| 214 | + } |
| 215 | + } |
| 216 | + IsValid(); |
| 217 | + } |
| 218 | + |
| 219 | + private void IsValid() |
| 220 | + { |
| 221 | + foreach (MudFieldHeader mudFieldHeader in MudFieldHeaders.Where(i => i.Required)) |
| 222 | + { |
| 223 | + if (!MudCsvHeaders.Where(i => i.MappedField == mudFieldHeader.Name).Any()) |
| 224 | + { |
| 225 | + _valid = false; |
| 226 | + return; |
| 227 | + } |
| 228 | + } |
| 229 | + _valid = true; |
| 230 | + } |
| 231 | + } |
| 232 | +} |
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