@page "/audit-logs"
@using Microsoft.AspNetCore.Authorization
@using Microsoft.AspNetCore.Components.Authorization
@using TaskTrackingSystem.Shared.Models.AuditLog
@using TaskTrackingSystem.WebApp.Components.Partial
@rendermode @(new InteractiveServerRenderMode(prerender: false))
@attribute [Authorize]
@inject ApiClientService ApiClient
@inject IJSRuntime JS
@inject AuthenticationStateProvider AuthStateProvider

<PageTitle>@AppLocalization.PageTitle("auditLogs", "Audit Logs")</PageTitle>

<div class="space-y-6">
    <!-- Page Header -->
    <div class="flex items-center justify-between">
        <div>
            <h2 class="text-3xl font-bold tracking-tight text-slate-900">@AppLocalization.PageTitle("auditLogs", "Audit Logs")</h2>
            <p class="text-slate-500 mt-1">@AppLocalization.PageDescription("auditLogs", "Review system activity and changes.")</p>
        </div>
    </div>

    <!-- Search Panel -->
    <div class="rounded-xl border border-slate-200 bg-white p-4 shadow-sm mb-4">
        <div class="flex items-center gap-3">
            <div class="relative flex-1 max-w-md">
                <input @bind="searchInput" @bind:event="oninput" @onkeyup="HandleKeyUp" type="text" placeholder="@AppLocalization.Text("common.searchByUser", "Search by user, action, section, or details...")"
                       class="w-full rounded-lg border border-slate-200 px-3 py-2 text-sm text-slate-900 placeholder:text-slate-400 focus:outline-none focus:ring-2 focus:ring-violet-600 focus:border-transparent transition-all" />
            </div>
            <button @onclick="ApplySearch" class="inline-flex items-center rounded-lg bg-violet-600 px-4 py-2.5 text-sm font-medium text-white hover:bg-violet-700 transition-colors shadow-sm">
                <i data-lucide="search" class="h-4 w-4 mr-2"></i>
                @AppLocalization.Text("action.search", "Search")
            </button>
                <button @onclick="ResetSearch" title="@AppLocalization.Text("action.reset", "Reset")" aria-label="@AppLocalization.Text("action.reset", "Reset")" class="inline-flex items-center justify-center rounded-lg border border-slate-200 bg-white p-2.5 text-slate-700 hover:bg-slate-50 transition-colors shadow-sm">
                    <i data-lucide="rotate-ccw" class="h-4 w-4 text-slate-500"></i>
            </button>
        </div>
    </div>

    @if (isLoading)
    {
        <LoadingSpinner Message="@AppLocalization.Text("common.loadingAuditLogs", "Loading audit logs...")" />
    }
    else
    {
        <!-- Logs Table -->
        <div class="rounded-xl border border-slate-200 bg-white shadow-sm overflow-hidden">
            <table class="w-full">
                <thead>
                    <tr class="border-b border-slate-100 bg-slate-50/60">
                        <th class="px-6 py-3 text-left text-xs font-semibold text-slate-500 uppercase tracking-wider">@AppLocalization.Text("common.index", "No.")</th>
                        <th class="px-6 py-3 text-left text-xs font-semibold text-slate-500 uppercase tracking-wider">@AppLocalization.Text("common.date", "Timestamp")</th>
                        <th class="px-6 py-3 text-left text-xs font-semibold text-slate-500 uppercase tracking-wider">@AppLocalization.Text("common.user", "User")</th>
                        <th class="px-6 py-3 text-left text-xs font-semibold text-slate-500 uppercase tracking-wider">@AppLocalization.Text("common.module", "Module")</th>
                        <th class="px-6 py-3 text-left text-xs font-semibold text-slate-500 uppercase tracking-wider">@AppLocalization.Text("common.actions", "Action")</th>
                        <th class="px-6 py-3 text-left text-xs font-semibold text-slate-500 uppercase tracking-wider">@AppLocalization.Text("common.description", "Description")</th>
                        <th class="px-6 py-3 text-left text-xs font-semibold text-slate-500 uppercase tracking-wider">@AppLocalization.Text("field.ipAddress", "IP Address")</th>
                    </tr>
                </thead>
                <tbody class="divide-y divide-slate-100 font-sans">
                    @if (PagedLogs.Any())
                    {
                        @foreach (var entry in PagedLogs.Select((log, index) => (log, index)))
                        {
                            var log = entry.log;
                            <tr class="hover:bg-slate-50/50 transition-colors">
                                <td class="px-6 py-4 text-sm font-semibold text-slate-500 align-top">@AppLocalization.Number((currentPage - 1) * pageSize + entry.index + 1)</td>
                                <td class="px-6 py-4 text-xs font-mono text-slate-500 whitespace-nowrap align-top">
                                    @AppLocalization.LocalizeDigits(log.CreatedAt.ToString("dd-MM-yyyy HH:mm:ss", System.Globalization.CultureInfo.InvariantCulture))
                                </td>
                                <td class="px-6 py-4 align-top">
                                    <div class="flex items-center gap-2">
                                        <span class="flex h-6 w-6 items-center justify-center rounded-full bg-violet-100 text-violet-700 text-[10px] font-bold shrink-0">
                                            @(GetAuditUserName(log).Length > 0 ? GetAuditUserName(log)[0].ToString().ToUpper() : "S")
                                        </span>
                                        <div>
                                            <p class="text-xs font-semibold text-slate-800">@GetAuditUserName(log)</p>
                                            <p class="text-[10px] text-slate-400">@@@log.Username</p>
                                        </div>
                                    </div>
                                </td>
                                <td class="px-6 py-4 align-top">
                                    <span class="inline-flex items-center px-2 py-0.5 rounded-full text-[10px] font-bold bg-slate-100 text-slate-700 border border-slate-200">
                                        @AppLocalization.ModuleName(log.Module)
                                    </span>
                                </td>
                                <td class="px-6 py-4 align-top">
                                    <span class="inline-flex items-center px-2.5 py-0.5 rounded-full text-[10px] font-bold @GetActionBadge(log.Action)">
                                        @AppLocalization.ActionName(log.Action)
                                    </span>
                                </td>
                                <td class="px-6 py-4 text-xs text-slate-700 whitespace-normal break-words align-top">
                                    @AppLocalization.AuditDescription(log.Description)
                                </td>
                                <td class="px-6 py-4 text-xs font-mono text-slate-500 whitespace-nowrap align-top">
                                    @(string.IsNullOrWhiteSpace(log.IpAddress) ? AppLocalization.Text("common.na", "N/A") : AppLocalization.LocalizeDigits(log.IpAddress))
                                </td>
                            </tr>
                        }
                    }
                    else
                    {
                        <EmptyState ColSpan="7" Icon="history" Title="@AppLocalization.Text("common.noResults", "No audit logs")" Subtitle="@AppLocalization.Text("common.noResults", "No security events or administrator operations were found.")" />
                    }
                </tbody>
            </table>

            <!-- Pagination -->
            <Pagination CurrentPage="currentPage"
                        TotalPages="TotalPages"
                        PageSize="pageSize"
                        TotalCount="TotalCount"
                        OnPageChanged="HandlePageChanged"
                        OnPageSizeChanged="HandlePageSizeChanged" />
        </div>
    }
</div>

@code {
    private bool isLoading = true;
    private List<AuditLogDto> auditLogs = new();
    private string searchInput = "";

    // Pagination state
    private int currentPage = 1;
    private int pageSize = 15;
    private int totalCount = 0;
    private int totalPages = 0;
    private int TotalPages => totalPages;
    private int TotalCount => totalCount;
    private IEnumerable<AuditLogDto> PagedLogs => auditLogs;

    protected override async Task OnInitializedAsync()
    {
        await LoadLogs();
    }

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        await JS.InvokeVoidAsync("initIcons");
    }

    private async Task LoadLogs()
    {
        isLoading = true;
        var client = ApiClient.CreateClient();
        try
        {
            var url = BuildAuditLogsUrl();
            var result = await client.GetFromJsonAsync<PagedResult<AuditLogDto>>(url, Serialization.CaseInsensitive);
            auditLogs = result?.Items ?? new();
            totalCount = result?.TotalCount ?? 0;
            totalPages = result?.TotalPages ?? 0;
            currentPage = result?.Page ?? currentPage;
            pageSize = result?.PageSize ?? pageSize;
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Load audit logs error: {ex.Message}");
        }
        finally
        {
            isLoading = false;
        }
    }

    private async Task ApplySearch()
    {
        currentPage = 1;
        await LoadLogs();
    }

    private async Task ResetSearch()
    {
        searchInput = "";
        currentPage = 1;
        await LoadLogs();
    }

    private async Task HandleKeyUp(KeyboardEventArgs e)
    {
        if (e.Key == "Enter")
        {
            await ApplySearch();
        }
    }

    private string GetAuditUserName(AuditLogDto log)
    {
        if (string.Equals(log.UserFullName, "System Admin", StringComparison.OrdinalIgnoreCase))
        {
            return AppLocalization.Text("common.systemAdmin", "System Admin");
        }

        if (string.Equals(log.UserFullName, "System", StringComparison.OrdinalIgnoreCase))
        {
            return AppLocalization.Text("notification.system", "System");
        }

        return Content.GetText(log.UserFullName, log.UserFullNameMy);
    }

    private string BuildAuditLogsUrl()
    {
        var query = new List<string>
        {
            $"page={currentPage}",
            $"limit={pageSize}"
        };

        if (!string.IsNullOrWhiteSpace(searchInput))
        {
            query.Add($"search={Uri.EscapeDataString(searchInput.Trim())}");
        }

        return $"AuditLog?{string.Join("&", query)}";
    }

    private async Task HandlePageChanged(int page)
    {
        currentPage = page;
        await LoadLogs();
    }

    private async Task HandlePageSizeChanged(int size)
    {
        pageSize = size;
        currentPage = 1;
        await LoadLogs();
    }

    private string GetActionBadge(string action)
    {
        return action.ToLower() switch
        {
            "create" => "bg-emerald-50 text-emerald-700 border border-emerald-200",
            "update" => "bg-amber-50 text-amber-700 border border-amber-200",
            "delete" => "bg-rose-50 text-rose-700 border border-rose-200",
            "assignaccess" => "bg-violet-50 text-violet-700 border border-violet-200",
            _ => "bg-blue-50 text-blue-700 border border-blue-200"
        };
    }
}