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feat(admin): implement live log viewer and searcher in log files page

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Rhefew
2026-07-13 16:29:21 +02:00
committed by Acentech Dev
parent 790a101f23
commit 31a5e64f40
1 changed files with 295 additions and 32 deletions
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327
src/Web/AdminPanel/Pages/LogFiles.razor
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@@ -1,57 +1,320 @@
@page "/logfiles"
@page "/logfiles"
@using System.IO
@using MUnique.OpenMU.Web.AdminPanel.Properties
@implements IDisposable
@inject IJSRuntime JSRuntime
<PageTitle>OpenMU: @Resources.LogFiles</PageTitle>
<Breadcrumb IsFirstFromRoot="true" Caption="@Resources.LogFiles"/>
<div>
<table class="table table-striped table-hover">
<thead>
<tr>
<th>@Resources.FileName</th>
<th>@Resources.LastUpdate</th>
<th>@Resources.Size</th>
</tr>
</thead>
<tbody>
@foreach (var entry in this._files.OrderByDescending(f => f.LastWriteTime))
{
<tr>
<td>
<a href="logs/@entry.Name">@entry.Name</a>
</td>
<td>@entry.LastWriteTime</td>
<td>@FormatFileSize(entry.Length)</td>
</tr>
}
</tbody>
</table>
<div class="row">
<div class="col-12">
<div class="card shadow-sm border-0 mb-4">
<div class="card-body p-0">
<table class="table table-striped table-hover mb-0">
<thead class="table-light">
<tr>
<th>@Resources.FileName</th>
<th>@Resources.LastUpdate</th>
<th>@Resources.Size</th>
<th class="text-end px-4">Actions</th>
</tr>
</thead>
<tbody>
@foreach (var entry in this._files.OrderByDescending(f => f.LastWriteTime))
{
var isSelected = this._selectedFile?.FullName == entry.FullName;
<tr class="@(isSelected ? "table-info" : "")">
<td>
<button type="button" class="btn btn-link p-0 text-start font-monospace text-decoration-none fw-bold" @onclick="() => SelectFile(entry)">
<span class="oi oi-terminal me-2 @(isSelected ? "text-primary" : "text-muted")"></span>@entry.Name
</button>
</td>
<td>@entry.LastWriteTime</td>
<td>@FormatFileSize(entry.Length)</td>
<td class="text-end px-4">
<a href="logs/@entry.Name" download class="btn btn-sm btn-outline-secondary py-0 px-2" title="Download File">
<span class="oi oi-data-transfer-download" aria-hidden="true"></span>
</a>
</td>
</tr>
}
</tbody>
</table>
</div>
</div>
</div>
</div>
@if (this._selectedFile != null)
{
<div class="card border-secondary shadow-lg mb-4">
<div class="card-header bg-dark text-white d-flex justify-content-between align-items-center py-2 px-3">
<div class="d-flex align-items-center">
<span class="oi oi-terminal text-info me-2" aria-hidden="true"></span>
<span class="me-2">Log Viewer:</span>
<span class="badge bg-secondary font-monospace">@this._selectedFile.Name</span>
<span class="badge bg-dark border border-secondary ms-2 text-muted" style="font-size: 11px;">@FormatFileSize(this._selectedFile.Length)</span>
</div>
<div class="d-flex align-items-center gap-3">
<div class="form-check form-switch m-0 d-flex align-items-center gap-2">
<input class="form-check-input cursor-pointer" type="checkbox" id="liveUpdateSwitch" @onchange="ToggleLiveUpdate" checked="@this._liveUpdate">
<label class="form-check-label text-light select-none cursor-pointer" for="liveUpdateSwitch" style="font-size: 13px;">Live Update</label>
</div>
<button class="btn btn-sm btn-outline-info d-flex align-items-center gap-1 py-1" @onclick="RefreshLogLines">
<span class="oi oi-reload" style="font-size: 11px;"></span> Refresh
</button>
<button class="btn btn-sm btn-outline-danger d-flex align-items-center gap-1 py-1" @onclick="CloseViewer">
<span class="oi oi-x" style="font-size: 11px;"></span> Close
</button>
</div>
</div>
<div class="card-body bg-dark p-3" style="background-color: #121214 !important;">
<div class="row g-2 mb-3">
<div class="col">
<div class="input-group">
<span class="input-group-text bg-secondary text-white border-0"><span class="oi oi-magnifying-glass" aria-hidden="true"></span></span>
<input type="text" class="form-control bg-secondary text-white border-0" placeholder="Filter log entries..." @bind="this._searchText" @bind:event="oninput" style="background-color: #2b2b30 !important; color: #fff !important;" />
@if (!string.IsNullOrEmpty(this._searchText))
{
<button class="btn btn-secondary border-0" @onclick="ClearSearch"><span class="oi oi-x" aria-hidden="true"></span></button>
}
</div>
</div>
</div>
<div id="log-terminal" class="p-3 rounded" style="height: 450px; overflow-y: auto; font-family: 'Consolas', 'Liberation Mono', Menlo, Courier, monospace; font-size: 13px; line-height: 1.5; white-space: pre-wrap; background-color: #0c0c0d !important; border: 1px solid #2d2d30;">
@if (this._logLines.Count == 0)
{
<div class="text-muted text-center py-5">No log entries found.</div>
}
else
{
var filteredLines = GetFilteredLines();
@if (filteredLines.Count == 0)
{
<div class="text-muted text-center py-5">No log entries match your filter.</div>
}
else
{
@foreach (var line in filteredLines)
{
<div style="@GetLineColorStyle(line)">@line</div>
}
}
}
</div>
<div class="d-flex justify-content-between align-items-center mt-2 text-muted" style="font-size: 12px;">
<div>
Showing @GetFilteredLines().Count of @this._logLines.Count lines (Last 300 lines loaded).
</div>
<button class="btn btn-sm btn-outline-secondary py-1 px-2" style="font-size: 12px; color: #a0a0a8;" @onclick="ScrollToBottom">
<span class="oi oi-arrow-bottom" aria-hidden="true"></span> Scroll to Bottom
</button>
</div>
</div>
</div>
}
@code {
private readonly List<FileInfo> _files = new ();
private FileInfo? _selectedFile;
private List<string> _logLines = new ();
private string _searchText = string.Empty;
private bool _liveUpdate = false;
private System.Threading.Timer? _timer;
private bool _shouldScrollToBottom = false;
/// <summary>
/// Initializes a new instance of class <see cref="LogFiles"/>.
/// </summary>
public LogFiles()
/// <inheritdoc />
protected override void OnInitialized()
{
var files = Directory.GetFiles(Path.Combine(Directory.GetCurrentDirectory(), "logs"));
foreach (var filePath in files)
this.RefreshFileList();
}
private void RefreshFileList()
{
this._files.Clear();
var logsPath = Path.Combine(Directory.GetCurrentDirectory(), "logs");
if (Directory.Exists(logsPath))
{
this._files.Add(new FileInfo(filePath));
var files = Directory.GetFiles(logsPath);
foreach (var filePath in files)
{
this._files.Add(new FileInfo(filePath));
}
}
}
private void SelectFile(FileInfo file)
{
this._selectedFile = file;
this._searchText = string.Empty;
this.RefreshLogLines();
this._shouldScrollToBottom = true;
this.SetupTimer();
}
private void CloseViewer()
{
this._selectedFile = null;
this._searchText = string.Empty;
this._logLines.Clear();
this._liveUpdate = false;
this.SetupTimer();
}
private void ClearSearch()
{
this._searchText = string.Empty;
}
private void ToggleLiveUpdate(ChangeEventArgs e)
{
this._liveUpdate = (bool)(e.Value ?? false);
this.SetupTimer();
}
private void SetupTimer()
{
if (this._liveUpdate && this._selectedFile != null)
{
this._timer ??= new System.Threading.Timer(_ =>
{
InvokeAsync(() =>
{
this.RefreshLogLines();
this.StateHasChanged();
});
}, null, 0, 2000);
}
else
{
this._timer?.Dispose();
this._timer = null;
}
}
private void RefreshLogLines()
{
if (this._selectedFile == null)
{
return;
}
this._selectedFile = new FileInfo(this._selectedFile.FullName);
this._logLines = this.ReadLastLines(this._selectedFile.FullName, 300);
}
private List<string> ReadLastLines(string path, int maxLines)
{
var lines = new List<string>();
try
{
using var fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
long offset = Math.Max(0, fs.Length - 102400); // Read last 100 KB
fs.Seek(offset, SeekOrigin.Begin);
using var reader = new StreamReader(fs, System.Text.Encoding.UTF8);
if (offset > 0)
{
// Discard partial line
reader.ReadLine();
}
string? line;
while ((line = reader.ReadLine()) != null)
{
lines.Add(line);
}
if (lines.Count > maxLines)
{
lines = lines.Skip(lines.Count - maxLines).ToList();
}
}
catch (Exception ex)
{
lines.Add($"Error reading log file: {ex.Message}");
}
return lines;
}
private List<string> GetFilteredLines()
{
if (string.IsNullOrWhiteSpace(this._searchText))
{
return this._logLines;
}
return this._logLines
.Where(line => line.Contains(this._searchText, StringComparison.OrdinalIgnoreCase))
.ToList();
}
private string GetLineColorStyle(string line)
{
if (line.Contains("[Error]", StringComparison.OrdinalIgnoreCase) || line.Contains("[Critical]", StringComparison.OrdinalIgnoreCase))
{
return "color: #ff6b6b; font-weight: bold;";
}
if (line.Contains("[Warning]", StringComparison.OrdinalIgnoreCase))
{
return "color: #feca57;";
}
if (line.Contains("[Debug]", StringComparison.OrdinalIgnoreCase))
{
return "color: #8a8d93; font-style: italic;";
}
if (line.Contains("[Information]", StringComparison.OrdinalIgnoreCase))
{
return "color: #1dd1a1;";
}
return "color: #d1d2d6;";
}
private async Task ScrollToBottom()
{
try
{
await JSRuntime.InvokeVoidAsync("eval", "var el = document.getElementById('log-terminal'); if (el) { el.scrollTop = el.scrollHeight; }");
}
catch
{
// Ignore error
}
}
/// <inheritdoc />
protected override async Task OnAfterRenderAsync(bool firstRender)
{
if (this._shouldScrollToBottom)
{
this._shouldScrollToBottom = false;
await this.ScrollToBottom();
}
}
/// <inheritdoc />
public void Dispose()
{
this._timer?.Dispose();
}
private string FormatFileSize(long size)
{
return size switch
{
(< 1024 << 10) => $"{Math.Round(size / 1024D, 2)} KiB",
(< 1024 << 10) => $"{Math.Round(size / 1024D, 2)} KiB",
(< 1024 << 20) => $"{Math.Round(size * 1D / (1024 << 10), 2)} MiB",
(< 1024L << 30) => $"{Math.Round(size * 1D / (1024L << 20), 2)} GiB",
_ => $"{size} bytes"
};
};
}
}