Добавлен playlist shared

PlaylistShared/Components/Pages/PlaylistDetails.razor

@@ -0,0 +1,92 @@
+@page "/playlist/{slug}"
+@using System.Security.Claims
+@using Microsoft.AspNetCore.Components.Authorization
+@using Microsoft.EntityFrameworkCore
+@using PlaylistShared.Data.Entities
+@inject AuthenticationStateProvider AuthenticationStateProvider
+@inject AppDbContext Db
+@inject IYandexMusicService YandexService
+@inject IJSRuntime Js
+@inject HttpClient Http
+
+<h3>@playlist?.Title</h3>
+<p>Владелец: @playlist?.Owner?.UserName</p>
+<p>Описание: @playlist?.Description</p>
+
+@if (canAdd)
+{
+    <div class="mb-3">
+        <input type="text" id="trackId" placeholder="ID трека Яндекс.Музыки" class="form-control" />
+        <input type="text" id="trackTitle" placeholder="Название трека" class="form-control mt-1" />
+        <input type="text" id="artistName" placeholder="Исполнитель" class="form-control mt-1" />
+        <button class="btn btn-primary mt-2" id="addTrackBtn">Добавить</button>
+    </div>
+}
+
+<ul id="trackList" class="list-group">
+    @foreach (var track in tracks)
+    {
+        <li class="list-group-item d-flex justify-content-between align-items-center" data-track-id="@track.YandexTrackId">
+            <div>
+                <strong>@track.Title</strong> - @track.Artist
+            </div>
+            @if (canDelete(track))
+            {
+                <button class="btn btn-sm btn-danger deleteTrackBtn" data-track-id="@track.YandexTrackId">Удалить</button>
+            }
+        </li>
+    }
+</ul>
+
+@code {
+    [Parameter] public string slug { get; set; } = "";
+
+    private SharedPlaylist? playlist;
+    private List<PlaylistTrack> tracks = new();
+    private bool canAdd;
+    private string? currentUserId;
+
+    protected override async Task OnInitializedAsync()
+    {
+        var authState = await AuthenticationStateProvider.GetAuthenticationStateAsync();
+        currentUserId = authState.User.FindFirst(ClaimTypes.NameIdentifier)?.Value;
+
+        playlist = await Db.SharedPlaylists
+            .Include(p => p.Owner)
+            .Include(p => p.Tracks)
+            .FirstOrDefaultAsync(p => p.ShareSlug == slug);
+        if (playlist == null) return;
+
+        canAdd = playlist.Permissions.Add switch
+        {
+            AccessLevel.All => true,
+            AccessLevel.Authorized => currentUserId != null,
+            _ => false
+        };
+
+        // Здесь можно при желании синхронизировать с Яндекс API, но пока используем локальный кеш
+        // var yandexTracks = await YandexService.GetPlaylistTracksAsync(playlist.OwnerUserId, playlist.YandexPlaylistId);
+        tracks = playlist.Tracks.OrderBy(t => t.AddedAt).ToList();
+    }
+
+    private bool canDelete(PlaylistTrack track)
+    {
+        if (currentUserId == playlist?.OwnerUserId) return true;
+        return playlist?.Permissions.Delete switch
+        {
+            DeleteAccessLevel.All => true,
+            DeleteAccessLevel.Authorized => currentUserId != null,
+            DeleteAccessLevel.AdderOnly => currentUserId != null && currentUserId == track.AddedByUserId,
+            DeleteAccessLevel.OwnerOnly => false,
+            _ => false
+        };
+    }
+
+    protected override async Task OnAfterRenderAsync(bool firstRender)
+    {
+        if (firstRender && playlist != null)
+        {
+            await Js.InvokeVoidAsync("initPlaylistInteractions", playlist.Id);
+        }
+    }
+}