feat: add campaign templates and recurring schedules

src/GmRelay.Web/Components/Pages/GroupDetails.razor

@@ -85,6 +85,83 @@
         </div>
     }
 
+    @if (campaignTemplates is not null)
+    {
+        <div class="glass-card campaign-template-panel animate-slide-up">
+            <div class="batch-bulk-header">
+                <div>
+                    <h3>Шаблоны кампаний</h3>
+                    <p>@campaignTemplateModels.Count сохранённых</p>
+                </div>
+                <span class="status-badge status-info">Template</span>
+            </div>
+
+            <EditForm Model="@campaignTemplateModel" OnValidSubmit="CreateCampaignTemplate">
+                <div class="campaign-template-fields">
+                    <div class="gm-form-group">
+                        <label class="gm-form-label">Название шаблона</label>
+                        <InputText @bind-Value="campaignTemplateModel.Name" class="gm-form-control" />
+                    </div>
+                    <div class="gm-form-group">
+                        <label class="gm-form-label">Название кампании</label>
+                        <InputText @bind-Value="campaignTemplateModel.Title" class="gm-form-control" />
+                    </div>
+                    <div class="gm-form-group">
+                        <label class="gm-form-label">Ссылка</label>
+                        <InputText @bind-Value="campaignTemplateModel.JoinLink" class="gm-form-control" />
+                    </div>
+                    <div class="gm-form-group">
+                        <label class="gm-form-label">Игр</label>
+                        <InputNumber @bind-Value="campaignTemplateModel.SessionCount" class="gm-form-control" min="1" max="52" />
+                    </div>
+                    <div class="gm-form-group">
+                        <label class="gm-form-label">Интервал, дней</label>
+                        <InputNumber @bind-Value="campaignTemplateModel.IntervalDays" class="gm-form-control" min="1" max="365" />
+                    </div>
+                    <div class="gm-form-group">
+                        <label class="gm-form-label">Мест</label>
+                        <InputNumber @bind-Value="campaignTemplateModel.MaxPlayers" class="gm-form-control" min="1" />
+                    </div>
+                    <div class="gm-form-group">
+                        <label class="gm-form-label">Уведомления</label>
+                        <select @bind="campaignTemplateModel.NotificationMode" class="gm-form-control">
+                            <option value="@SessionNotificationModeExtensions.GroupAndDirectValue">В группе и в личку</option>
+                            <option value="@SessionNotificationModeExtensions.GroupOnlyValue">Только в группе</option>
+                        </select>
+                    </div>
+                </div>
+
+                <button type="submit" class="btn-gm btn-gm-primary" disabled="@isCreatingTemplate">
+                    @(isCreatingTemplate ? "⏳ Сохраняем..." : "💾 Сохранить шаблон")
+                </button>
+            </EditForm>
+
+            @if (campaignTemplateModels.Count > 0)
+            {
+                <div class="campaign-template-list">
+                    @foreach (var template in campaignTemplateModels)
+                    {
+                        <div class="campaign-template-row">
+                            <div class="campaign-template-info">
+                                <h3>@template.Name</h3>
+                                <p>@FormatTemplateSummary(template)</p>
+                            </div>
+                            <div class="campaign-template-actions">
+                                <input type="datetime-local" @bind="template.FirstScheduledAtLocal" class="gm-form-control" />
+                                <button type="button" class="btn-gm btn-gm-success" disabled="@IsTemplateBusy(template)" @onclick="() => CreateBatchFromTemplate(template)">
+                                    @(processingTemplateId == template.Id ? "⏳ Создаём..." : "📅 Создать batch")
+                                </button>
+                                <button type="button" class="btn-gm btn-gm-danger" disabled="@IsTemplateBusy(template)" @onclick="() => DeleteCampaignTemplate(template)">
+                                    @(deletingTemplateId == template.Id ? "⏳ Удаляем..." : "Удалить")
+                                </button>
+                            </div>
+                        </div>
+                    }
+                </div>
+            }
+        </div>
+    }
+
     @if (sessions == null)
     {
         <div class="glass-card" style="padding: 2rem;">
@@ -263,16 +340,22 @@
 @code {
     [Parameter] public Guid GroupId { get; set; }
     private List<WebSession>? sessions;
+    private List<WebCampaignTemplate>? campaignTemplates;
     private WebGroupManagement? groupManagement;
     private List<BatchBulkEditModel> batchModels = [];
+    private List<CampaignTemplateUsageModel> campaignTemplateModels = [];
     private Guid? promotingSessionId;
     private Guid? processingBatchId;
+    private Guid? processingTemplateId;
+    private Guid? deletingTemplateId;
     private long? removingCoGmId;
     private bool isAddingCoGm;
+    private bool isCreatingTemplate;
     private long telegramId;
     private string? errorMessage;
     private string? successMessage;
     private CoGmEditModel coGmModel = new();
+    private CampaignTemplateEditModel campaignTemplateModel = new();
 
     protected override async Task OnInitializedAsync()
     {
@@ -302,7 +385,15 @@
             return;
         }
 
+        campaignTemplates = await SessionService.GetCampaignTemplatesForGmAsync(GroupId, telegramId);
+        if (campaignTemplates is null)
+        {
+            Navigation.NavigateTo("/access-denied");
+            return;
+        }
+
         RebuildBatchModels();
+        RebuildCampaignTemplateModels();
     }
 
     private async Task AddCoGm()
@@ -497,6 +588,110 @@
         }
     }
 
+    private async Task CreateCampaignTemplate()
+    {
+        errorMessage = null;
+        successMessage = null;
+
+        if (!ValidateCampaignTemplate(campaignTemplateModel))
+        {
+            errorMessage = "Шаблон должен иметь название, ссылку, 1-52 игр, шаг 1-365 дней и положительный лимит мест, если он указан.";
+            return;
+        }
+
+        isCreatingTemplate = true;
+
+        try
+        {
+            await SessionService.CreateCampaignTemplateForGmAsync(
+                GroupId,
+                telegramId,
+                new CreateCampaignTemplateRequest(
+                    campaignTemplateModel.Name,
+                    campaignTemplateModel.Title,
+                    campaignTemplateModel.JoinLink,
+                    campaignTemplateModel.SessionCount,
+                    campaignTemplateModel.IntervalDays,
+                    campaignTemplateModel.MaxPlayers,
+                    SessionNotificationModeExtensions.FromDatabaseValue(campaignTemplateModel.NotificationMode)));
+
+            campaignTemplateModel = new();
+            successMessage = "Шаблон кампании сохранён.";
+            await LoadSessions();
+        }
+        catch (SessionAccessDeniedException)
+        {
+            Navigation.NavigateTo("/access-denied");
+        }
+        catch (Exception ex)
+        {
+            errorMessage = "Не удалось сохранить шаблон: " + ex.Message;
+        }
+        finally
+        {
+            isCreatingTemplate = false;
+        }
+    }
+
+    private async Task CreateBatchFromTemplate(CampaignTemplateUsageModel template)
+    {
+        errorMessage = null;
+        successMessage = null;
+        processingTemplateId = template.Id;
+
+        try
+        {
+            var utcTime = new DateTimeOffset(template.FirstScheduledAtLocal, TimeSpan.FromHours(3)).ToUniversalTime().UtcDateTime;
+            if (utcTime <= DateTime.UtcNow)
+            {
+                errorMessage = "Первая дата batch должна быть в будущем.";
+                return;
+            }
+
+            var createdBatch = await SessionService.CreateBatchFromCampaignTemplateForGmAsync(template.Id, telegramId, utcTime);
+            successMessage = $"Batch создан из шаблона: {createdBatch.SessionCount} игр.";
+            await LoadSessions();
+        }
+        catch (SessionAccessDeniedException)
+        {
+            Navigation.NavigateTo("/access-denied");
+        }
+        catch (Exception ex)
+        {
+            errorMessage = "Не удалось создать batch из шаблона: " + ex.Message;
+        }
+        finally
+        {
+            processingTemplateId = null;
+        }
+    }
+
+    private async Task DeleteCampaignTemplate(CampaignTemplateUsageModel template)
+    {
+        errorMessage = null;
+        successMessage = null;
+        deletingTemplateId = template.Id;
+
+        try
+        {
+            await SessionService.DeleteCampaignTemplateForGmAsync(template.Id, telegramId);
+            successMessage = "Шаблон кампании удалён.";
+            await LoadSessions();
+        }
+        catch (SessionAccessDeniedException)
+        {
+            Navigation.NavigateTo("/access-denied");
+        }
+        catch (Exception ex)
+        {
+            errorMessage = "Не удалось удалить шаблон: " + ex.Message;
+        }
+        finally
+        {
+            deletingTemplateId = null;
+        }
+    }
+
     private void RebuildBatchModels()
     {
         batchModels = sessions?
@@ -523,6 +718,27 @@
             .ToList() ?? [];
     }
 
+    private void RebuildCampaignTemplateModels()
+    {
+        var defaultStart = DateTime.UtcNow.AddDays(7).ToMoscow();
+        campaignTemplateModels = campaignTemplates?
+            .OrderByDescending(template => template.UpdatedAt)
+            .ThenBy(template => template.Name)
+            .Select(template => new CampaignTemplateUsageModel
+            {
+                Id = template.Id,
+                Name = template.Name,
+                Title = template.Title,
+                JoinLink = template.JoinLink,
+                SessionCount = template.SessionCount,
+                IntervalDays = template.IntervalDays,
+                MaxPlayers = template.MaxPlayers,
+                NotificationMode = template.NotificationMode,
+                FirstScheduledAtLocal = defaultStart
+            })
+            .ToList() ?? [];
+    }
+
     private static bool ValidateBatchDetails(BatchBulkEditModel batch)
     {
         batch.Title = batch.Title.Trim();
@@ -530,8 +746,29 @@
         return batch.Title.Length > 0 && batch.JoinLink.Length > 0;
     }
 
+    private static bool ValidateCampaignTemplate(CampaignTemplateEditModel template)
+    {
+        template.Name = template.Name.Trim();
+        template.Title = template.Title.Trim();
+        template.JoinLink = template.JoinLink.Trim();
+
+        if (template.MaxPlayers.HasValue && template.MaxPlayers.Value <= 0)
+        {
+            return false;
+        }
+
+        return template.Name.Length > 0 &&
+               template.Title.Length > 0 &&
+               template.JoinLink.Length > 0 &&
+               template.SessionCount is >= 1 and <= 52 &&
+               template.IntervalDays is >= 1 and <= 365;
+    }
+
     private bool IsBatchBusy(BatchBulkEditModel batch) => processingBatchId == batch.BatchId;
 
+    private bool IsTemplateBusy(CampaignTemplateUsageModel template) =>
+        processingTemplateId == template.Id || deletingTemplateId == template.Id;
+
     private string CurrentUserRole =>
         groupManagement?.Managers.FirstOrDefault(manager => manager.TelegramId == telegramId)?.Role
         ?? GroupManagerRoleExtensions.CoGmValue;
@@ -577,6 +814,22 @@
     private static string FormatBatchSummary(BatchBulkEditModel batch) =>
         $"{batch.SessionCount} игр · {FormatLocalMoscow(batch.FirstScheduledAtLocal)} — {FormatLocalMoscow(batch.LastScheduledAtLocal)}";
 
+    private static string FormatTemplateSummary(CampaignTemplateUsageModel template)
+    {
+        var seats = template.MaxPlayers.HasValue
+            ? $"{template.MaxPlayers.Value.ToString(System.Globalization.CultureInfo.InvariantCulture)} мест"
+            : "без лимита";
+
+        return $"{template.Title} · {template.SessionCount} игр · каждые {template.IntervalDays} дн. · {seats} · {FormatNotificationMode(template.NotificationMode)}";
+    }
+
+    private static string FormatNotificationMode(string notificationMode) =>
+        SessionNotificationModeExtensions.FromDatabaseValue(notificationMode) switch
+        {
+            SessionNotificationMode.GroupOnly => "только группа",
+            _ => "группа и личка"
+        };
+
     private static string FormatLocalMoscow(DateTime localMoscow) =>
         localMoscow.ToString("d MMMM yyyy, HH:mm", System.Globalization.CultureInfo.GetCultureInfo("ru-RU"));
 
@@ -611,6 +864,30 @@
         public string CloneInterval { get; set; } = "week";
     }
 
+    private sealed class CampaignTemplateEditModel
+    {
+        public string Name { get; set; } = "";
+        public string Title { get; set; } = "";
+        public string JoinLink { get; set; } = "";
+        public int SessionCount { get; set; } = 6;
+        public int IntervalDays { get; set; } = 7;
+        public int? MaxPlayers { get; set; }
+        public string NotificationMode { get; set; } = SessionNotificationModeExtensions.GroupAndDirectValue;
+    }
+
+    private sealed class CampaignTemplateUsageModel
+    {
+        public Guid Id { get; init; }
+        public string Name { get; init; } = "";
+        public string Title { get; init; } = "";
+        public string JoinLink { get; init; } = "";
+        public int SessionCount { get; init; }
+        public int IntervalDays { get; init; }
+        public int? MaxPlayers { get; init; }
+        public string NotificationMode { get; init; } = SessionNotificationModeExtensions.GroupAndDirectValue;
+        public DateTime FirstScheduledAtLocal { get; set; } = DateTime.Now;
+    }
+
     private sealed class CoGmEditModel
     {
         public long? TelegramId { get; set; }