@page "/search"
@attribute [Authorize]
@inject IUserSessionService Session
@inject ISessionManager SessionMgr
@inject IElevationCoordinator Elevation
@inject ISearchService SearchSvc
@inject SearchCsvExportService CsvExport
@inject SearchHtmlExportService HtmlExport
@inject WebExportService WebExport
@rendermode InteractiveServer

<h1 class="page-title">File Search</h1>

@if (!Session.HasProfile) { <NoProfilePrompt /> return; }

<div class="card">
    <div class="card-title">Search Options</div>
    <SitePicker Profile="Session.CurrentProfile!" @bind-SelectedSites="_sites" />
    <div class="form-row mt-8">
        <div class="form-group">
            <label class="form-label">File Extensions (comma-separated)</label>
            <input class="form-input" @bind="_extensions" placeholder="docx, xlsx, pdf" />
        </div>
    </div>
    <div class="form-row">
        <div class="form-group">
            <label class="form-label">Regex filter (filename)</label>
            <input class="form-input" @bind="_regex" placeholder="Optional regex pattern" />
        </div>
        <div class="form-group">
            <label class="form-label">Max results</label>
            <input class="form-input" type="number" @bind="_maxResults" min="1" max="50000" style="width:120px" />
        </div>
    </div>
    <div class="form-row">
        <div class="form-group">
            <label class="form-label">Created by</label>
            <input class="form-input" @bind="_createdBy" />
        </div>
        <div class="form-group">
            <label class="form-label">Modified by</label>
            <input class="form-input" @bind="_modifiedBy" />
        </div>
        <div class="form-group">
            <label class="form-label">Library (optional)</label>
            <input class="form-input" @bind="_library" />
        </div>
    </div>
    <div class="flex-row mt-8">
        <button class="btn btn-primary" @onclick="RunSearch" disabled="@_running">
            @(_running ? "Searching…" : "Search")
        </button>
        @if (_running) { <button class="btn btn-secondary" @onclick="Cancel">Cancel</button> }
    </div>
    <ProgressPanel IsRunning="_running" StatusMessage="@_status" Current="_current" Total="_total" />
</div>

@if (!string.IsNullOrEmpty(_error)) { <div class="alert alert-error">@_error</div> }

@if (_results.Count > 0)
{
    <div class="card">
        <div class="flex-row">
            <div class="card-title">Results <span class="count-badge">@_results.Count</span></div>
            <div class="spacer"></div>
            <MergeModeSelect Value="_mergeMode" ValueChanged="v => _mergeMode = v" Visible="_bySite.Count > 1" />
            <button class="btn btn-secondary btn-sm" @onclick="ExportCsv">Export CSV</button>
            <button class="btn btn-secondary btn-sm" @onclick="ExportHtml">Export HTML</button>
        </div>
        <div class="data-table-wrap">
            <table class="data-table">
                <thead><tr><th>Name</th><th>Ext</th><th>Path</th><th>Created</th><th>Modified</th><th class="num">Size (KB)</th></tr></thead>
                <tbody>
                    @foreach (var r in _results.Take(500))
                    {
                        <tr>
                            <td>@System.IO.Path.GetFileName(r.Path)</td>
                            <td>@r.FileExtension</td>
                            <td title="@r.Path" style="max-width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap">@r.Path</td>
                            <td>@(r.Created?.ToString("yyyy-MM-dd") ?? "")</td>
                            <td>@(r.LastModified?.ToString("yyyy-MM-dd") ?? "")</td>
                            <td class="num">@((r.SizeBytes / 1024.0).ToString("F1"))</td>
                        </tr>
                    }
                </tbody>
            </table>
        </div>
        @if (_results.Count > 500) { <div class="text-muted mt-8">Showing first 500 of @_results.Count. Export for full results.</div> }
    </div>
}

@code {
    private List<SiteInfo> _sites = new();
    private string _extensions = string.Empty, _regex = string.Empty;
    private string _createdBy = string.Empty, _modifiedBy = string.Empty, _library = string.Empty;
    private int _maxResults = 5000;
    private bool _running; private string _status = string.Empty, _error = string.Empty;
    private int _current, _total;
    private List<SearchResult> _results = new();
    private List<(string Label, IReadOnlyList<SearchResult> Results)> _bySite = new();
    private ReportMergeMode _mergeMode = ReportMergeMode.SingleMerged;
    private CancellationTokenSource? _cts;

    private async Task RunSearch()
    {
        _error = string.Empty; _results = new(); _bySite = new(); _running = true;
        _cts = new CancellationTokenSource();
        if (_sites.Count == 0) { _error = "Please select at least one site."; _running = false; return; }
        var progress = new Progress<OperationProgress>(p => { _status = p.Message; _current = p.Current; _total = p.Total; InvokeAsync(StateHasChanged); });
        try
        {
            var exts = _extensions.Split(',', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
            var bySite = new List<(string, IReadOnlyList<SearchResult>)>();
            var flat = new List<SearchResult>();
            int i = 0;
            foreach (var site in _sites)
            {
                _cts.Token.ThrowIfCancellationRequested();
                _status = $"Searching {site.Title} ({++i}/{_sites.Count})…";
                await InvokeAsync(StateHasChanged);
                var opts = new SearchOptions(exts, _regex, null, null, null, null, _createdBy.TrimOrNull(), _modifiedBy.TrimOrNull(), _library.TrimOrNull(), _maxResults, site.Url);
                var found = await Elevation.RunAsync(async c =>
                {
                    var ctx = await SessionMgr.GetOrCreateContextAsync(site.Url, Session.CurrentProfile!, c);
                    return await SearchSvc.SearchFilesAsync(ctx, opts, progress, c);
                }, _cts.Token);
                bySite.Add((site.Title, found));
                flat.AddRange(found);
            }
            _bySite = bySite; _results = flat;
            _status = $"Found {_results.Count} files across {_sites.Count} site(s).";
        }
        catch (OperationCanceledException) { _status = "Cancelled."; }
        catch (Exception ex) { _error = ex.Message; }
        finally { _running = false; await InvokeAsync(StateHasChanged); }
    }

    private void Cancel() => _cts?.Cancel();
    private async Task ExportCsv()
    {
        var ts = DateTime.Now.ToString("yyyyMMdd_HHmmss");
        var output = ReportMergeHelper.Build(_bySite, _mergeMode, "search", ts, ReportFormat.Csv, rs => CsvExport.BuildCsv(rs));
        await WebExport.DownloadBytesAsync(output.Bytes, output.FileName, output.Mime);
    }
    private async Task ExportHtml()
    {
        var ts = DateTime.Now.ToString("yyyyMMdd_HHmmss");
        var output = ReportMergeHelper.Build(_bySite, _mergeMode, "search", ts, ReportFormat.Html, rs => HtmlExport.BuildHtml(rs, Session.CurrentBranding));
        await WebExport.DownloadBytesAsync(output.Bytes, output.FileName, output.Mime);
    }
}