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99 lines
3.2 KiB
99 lines
3.2 KiB
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Threading.Tasks;
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using TrustedUninstaller.Shared.Exceptions;
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using TrustedUninstaller.Shared.Tasks;
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using YamlDotNet.Serialization;
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namespace TrustedUninstaller.Shared.Actions
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{
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internal enum LineInFileOperation
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{
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Delete = 0,
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Add = 1
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}
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internal class LineInFileAction : TaskAction, ITaskAction
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{
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public void RunTaskOnMainThread() { throw new NotImplementedException(); }
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[YamlMember(Alias = "path")]
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public string RawPath { get; set; }
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[YamlMember(Alias = "line")]
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public string RawLines { get; set; }
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[YamlMember(Alias = "operation")]
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public LineInFileOperation Operation { get; set; } = LineInFileOperation.Delete;
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[YamlMember(typeof(string), Alias = "weight")]
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public int ProgressWeight { get; set; } = 1;
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public int GetProgressWeight() => ProgressWeight;
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private bool InProgress { get; set; } = false;
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public void ResetProgress() => InProgress = false;
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public string ErrorString() => $"LineInFileAction failed to {Operation.ToString().ToLower()} lines to file '{RawPath}'.";
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public UninstallTaskStatus GetStatus()
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{
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if (InProgress)
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{
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return UninstallTaskStatus.InProgress;
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}
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var realPath = this.GetRealPath();
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if (!File.Exists(realPath))
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{
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// If the file doesn't exist it can't contain the lines either, can it?
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return Operation == LineInFileOperation.Delete ?
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UninstallTaskStatus.Completed : UninstallTaskStatus.ToDo;
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}
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var isDone = !GetMissingLines().Any();
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return isDone ? UninstallTaskStatus.Completed : UninstallTaskStatus.ToDo;
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}
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private IEnumerable<string> GetLines() =>
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RawLines.Split(
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new[] { "\r\n", "\r", "\n" },
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StringSplitOptions.None
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);
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private IEnumerable<string> GetMissingLines()
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{
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var realPath = this.GetRealPath();
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var fileLines = File.ReadAllLines(realPath);
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var targetLines = GetLines();
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return targetLines.Where(line => !fileLines.Contains(line));
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}
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private string GetRealPath()
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{
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return Environment.ExpandEnvironmentVariables(RawPath);
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}
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public async Task<bool> RunTask()
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{
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if (InProgress) throw new TaskInProgressException("Another LineInFile action was called while one was in progress.");
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InProgress = true;
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//Wording should be improved here
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Console.WriteLine($"{Operation.ToString().TrimEnd('e')}ing text lines in file '{RawPath}'...");
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var realPath = this.GetRealPath();
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var missingLines = GetMissingLines();
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using var sw = File.AppendText(realPath);
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foreach (var missingLine in missingLines)
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{
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await sw.WriteLineAsync(missingLine);
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}
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InProgress = false;
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return true;
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}
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}
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}
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