calendar due date

prisma/migrations/20261012120000_issue_project_due_date_index/migration.sql

@@ -0,0 +1,2 @@
+-- CreateIndex
+CREATE INDEX "issue_projectId_dueDate_idx" ON "issue"("projectId", "dueDate");

prisma/schema.prisma

@@ -108,6 +108,7 @@ model Issue {
   @@index([createdAt])
   @@index([projectId, createdAt])
   @@index([dueDate])
+  @@index([projectId, dueDate])
   @@map("issue")
 }
 

src/common/decorators/validators.ts

@@ -1,5 +1,5 @@
 import { Transform, TransformFnParams } from 'class-transformer';
-import { IsInt, IsNotEmpty, IsOptional, IsString, Max, MaxLength, Min } from 'class-validator';
+import { IsBoolean, IsInt, IsNotEmpty, IsOptional, IsString, Max, Min } from 'class-validator';
 import { applyDecorators } from '@nestjs/common';
 
 interface ToStringOptions {
@@ -11,6 +11,7 @@ interface BaseDecoratorParams {
 }
 
 export interface StringDecoratorParams extends BaseDecoratorParams {}
+export interface BooleanDecoratorParams extends BaseDecoratorParams {}
 export interface IntDecoratorParams extends BaseDecoratorParams {
   min?: number;
   max?: number;
@@ -24,6 +25,15 @@ const ToNumber = () =>
     return Number.isNaN(parsed) ? undefined : parsed;
   });
 
+/** Query-параметры приходят строками: 'true'/'false' → boolean, остальное оставляем как есть для IsBoolean */
+const ToBoolean = () =>
+  Transform(({ value }) => {
+    if (value === undefined || value === null || value === '') return undefined;
+    if (value === 'true') return true;
+    if (value === 'false') return false;
+    return value;
+  });
+
 const ToString = (options?: ToStringOptions) =>
   Transform(({ value }: TransformFnParams) => {
     if (value === undefined || value === null) return undefined;
@@ -52,3 +62,11 @@ export function IntDecorator(params?: IntDecoratorParams) {
 
   return applyDecorators(...args);
 }
+
+export function BooleanDecorator(params?: BooleanDecoratorParams) {
+  const args = [IsBoolean(), ToBoolean()];
+
+  if (params?.isOptional) args.push(IsOptional());
+
+  return applyDecorators(...args);
+}

src/modules/comment/application/use-cases/test-helpers.ts

@@ -50,6 +50,7 @@ export const mockIssueRepository = (): IIssueRepository => ({
   findById: vi.fn(),
   findByCKey: vi.fn(),
   findAll: vi.fn(),
+  findByDueDateRange: vi.fn(),
   countByStatus: vi.fn(),
   create: vi.fn(),
   update: vi.fn(),

src/modules/history/application/use-cases/get-issue-history/get-issue-history.use-case.spec.ts

@@ -54,6 +54,7 @@ describe('GetIssueHistoryUseCase', () => {
       findById: vi.fn(),
       findByCKey: vi.fn(),
       findAll: vi.fn(),
+      findByDueDateRange: vi.fn(),
       countByStatus: vi.fn(),
       create: vi.fn(),
       update: vi.fn(),

src/modules/issue/application/dto/calendar-issues.dto.ts

@@ -0,0 +1,7 @@
+import { IssueWithUsersDto } from './issue-with-users.dto.js';
+
+export class CalendarIssuesDto {
+  list: IssueWithUsersDto[];
+  /** В диапазоне задач больше, чем вернули — клиенту стоит сузить фильтр */
+  truncated: boolean;
+}

src/modules/issue/application/use-cases/create-issue/create-issue.use-case.spec.ts

@@ -20,6 +20,7 @@ describe('CreateIssueUseCase', () => {
       findById: vi.fn(),
       findByCKey: vi.fn(),
       findAll: vi.fn(),
+      findByDueDateRange: vi.fn(),
       countByStatus: vi.fn(),
       create: vi.fn(),
       update: vi.fn(),

src/modules/issue/application/use-cases/delete-issue/delete-issue.use-case.spec.ts

@@ -32,6 +32,7 @@ describe('DeleteIssueUseCase', () => {
       findById: vi.fn(),
       findByCKey: vi.fn(),
       findAll: vi.fn(),
+      findByDueDateRange: vi.fn(),
       countByStatus: vi.fn(),
       create: vi.fn(),
       update: vi.fn(),

src/modules/issue/application/use-cases/get-issue-by-ckey/get-issue-by-ckey.use-case.spec.ts

@@ -33,6 +33,7 @@ describe('GetIssueByCkeyUseCase', () => {
       findById: vi.fn(),
       findByCKey: vi.fn(),
       findAll: vi.fn(),
+      findByDueDateRange: vi.fn(),
       countByStatus: vi.fn(),
       create: vi.fn(),
       update: vi.fn(),

src/modules/issue/application/use-cases/get-issue-stats/get-issue-stats.use-case.spec.ts

@@ -11,6 +11,7 @@ describe('GetIssueStatsUseCase', () => {
       findById: vi.fn(),
       findByCKey: vi.fn(),
       findAll: vi.fn(),
+      findByDueDateRange: vi.fn(),
       countByStatus: vi.fn(),
       create: vi.fn(),
       update: vi.fn(),

src/modules/issue/application/use-cases/get-issue/get-issue.use-case.spec.ts

@@ -33,6 +33,7 @@ describe('GetIssueUseCase', () => {
       findById: vi.fn(),
       findByCKey: vi.fn(),
       findAll: vi.fn(),
+      findByDueDateRange: vi.fn(),
       countByStatus: vi.fn(),
       create: vi.fn(),
       update: vi.fn(),

src/modules/issue/application/use-cases/list-calendar-issues/list-calendar-issues.query.ts

@@ -0,0 +1,10 @@
+export class ListCalendarIssuesQuery {
+  constructor(
+    public readonly userId: string,
+    public readonly from: Date,
+    public readonly to: Date,
+    public readonly projectId?: string,
+    public readonly status?: string[],
+    public readonly assigneeId?: string,
+  ) {}
+}

src/modules/issue/application/use-cases/list-calendar-issues/list-calendar-issues.use-case.spec.ts

@@ -0,0 +1,88 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+import type { IIssueRepository } from '../../../domain/repositories/issue.repository.interface.js';
+import { Issue } from '../../../domain/entities/issue.entity.js';
+import { InvalidCalendarRangeException } from '../../../domain/exceptions/invalid-calendar-range.exception.js';
+import { ListCalendarIssuesUseCase } from './list-calendar-issues.use-case.js';
+import { ListCalendarIssuesQuery } from './list-calendar-issues.query.js';
+import type { IssueUserExpanderService } from '../../services/issue-user-expander.service.js';
+import type { IssueWithUsersDto } from '../../dto/issue-with-users.dto.js';
+
+const FROM = new Date('2026-09-28T00:00:00+03:00');
+const TO = new Date('2026-11-09T00:00:00+03:00');
+
+const buildIssue = (id: number) =>
+  Issue.reconstitute({
+    id,
+    key: `ISSUE-${id}`,
+    title: `Issue ${id}`,
+    content: null,
+    status: 'OPEN',
+    priority: 0,
+    assignee: null,
+    reporter: 'user-1',
+    projectId: 'project-1',
+    dueDate: new Date('2026-10-15T12:00:00Z'),
+    createdAt: new Date(),
+    updatedAt: new Date(),
+  });
+
+describe('ListCalendarIssuesUseCase', () => {
+  let repository: IIssueRepository;
+  let issueUserExpander: IssueUserExpanderService;
+  let useCase: ListCalendarIssuesUseCase;
+
+  beforeEach(() => {
+    repository = {
+      findById: vi.fn(),
+      findByCKey: vi.fn(),
+      findAll: vi.fn(),
+      findByDueDateRange: vi.fn(),
+      countByStatus: vi.fn(),
+      create: vi.fn(),
+      update: vi.fn(),
+      delete: vi.fn(),
+    };
+    issueUserExpander = {
+      expandAll: vi.fn(async (issues: Issue[]) => issues.map((issue) => ({ id: issue.id }) as IssueWithUsersDto)),
+    } as unknown as IssueUserExpanderService;
+    useCase = new ListCalendarIssuesUseCase(repository, issueUserExpander);
+  });
+
+  it('forwards the range and filters, asking for one issue more than the limit', async () => {
+    vi.mocked(repository.findByDueDateRange).mockResolvedValue([buildIssue(1), buildIssue(2)]);
+
+    const result = await useCase.execute(
+      new ListCalendarIssuesQuery('user-1', FROM, TO, 'project-1', ['OPEN'], 'user-2'),
+    );
+
+    expect(repository.findByDueDateRange).toHaveBeenCalledWith({
+      from: FROM,
+      to: TO,
+      limit: ListCalendarIssuesUseCase.MAX_ISSUES + 1,
+      userId: 'user-1',
+      projectId: 'project-1',
+      status: ['OPEN'],
+      assigneeId: 'user-2',
+    });
+    expect(result).toEqual({ list: [{ id: 1 }, { id: 2 }], truncated: false });
+  });
+
+  it('cuts the list to the limit and marks it as truncated', async () => {
+    const issues = Array.from({ length: ListCalendarIssuesUseCase.MAX_ISSUES + 1 }, (_, index) =>
+      buildIssue(index + 1),
+    );
+    vi.mocked(repository.findByDueDateRange).mockResolvedValue(issues);
+
+    const result = await useCase.execute(new ListCalendarIssuesQuery('user-1', FROM, TO));
+
+    expect(result.truncated).toBe(true);
+    expect(result.list).toHaveLength(ListCalendarIssuesUseCase.MAX_ISSUES);
+  });
+
+  it('rejects an invalid range without querying the repository', async () => {
+    await expect(useCase.execute(new ListCalendarIssuesQuery('user-1', TO, FROM))).rejects.toThrow(
+      InvalidCalendarRangeException,
+    );
+    expect(repository.findByDueDateRange).not.toHaveBeenCalled();
+  });
+});

src/modules/issue/application/use-cases/list-calendar-issues/list-calendar-issues.use-case.ts

@@ -0,0 +1,42 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { ISSUE_REPOSITORY, type IIssueRepository } from '../../../domain/repositories/issue.repository.interface.js';
+import { CalendarRange } from '../../../domain/value-objects/calendar-range.vo.js';
+import { CalendarIssuesDto } from '../../dto/calendar-issues.dto.js';
+import { IssueUserExpanderService } from '../../services/issue-user-expander.service.js';
+import { ListCalendarIssuesQuery } from './list-calendar-issues.query.js';
+
+/**
+ * Задачи для календаря: все задачи с dueDate в [from, to) без пагинации,
+ * но не больше MAX_ISSUES — иначе ответ помечается как truncated.
+ * Задачи без dueDate в календарь не попадают.
+ */
+@Injectable()
+export class ListCalendarIssuesUseCase {
+  static readonly MAX_ISSUES = 500;
+
+  constructor(
+    @Inject(ISSUE_REPOSITORY)
+    private readonly issueRepository: IIssueRepository,
+    private readonly issueUserExpander: IssueUserExpanderService,
+  ) {}
+
+  async execute(query: ListCalendarIssuesQuery): Promise<CalendarIssuesDto> {
+    const range = CalendarRange.create({ from: query.from, to: query.to });
+
+    // Берём на одну больше лимита, чтобы узнать, есть ли что-то за ним
+    const issues = await this.issueRepository.findByDueDateRange({
+      from: range.from,
+      to: range.to,
+      limit: ListCalendarIssuesUseCase.MAX_ISSUES + 1,
+      userId: query.userId,
+      projectId: query.projectId,
+      status: query.status,
+      assigneeId: query.assigneeId,
+    });
+
+    const truncated = issues.length > ListCalendarIssuesUseCase.MAX_ISSUES;
+    const list = truncated ? issues.slice(0, ListCalendarIssuesUseCase.MAX_ISSUES) : issues;
+
+    return { list: await this.issueUserExpander.expandAll(list), truncated };
+  }
+}

src/modules/issue/application/use-cases/list-issues/list-issues.query.ts

@@ -7,5 +7,6 @@ export class ListIssuesQuery {
     public readonly status?: string[],
     public readonly text?: string,
     public readonly assigneeId?: string,
+    public readonly hasDueDate?: boolean,
   ) {}
 }

src/modules/issue/application/use-cases/list-issues/list-issues.use-case.spec.ts

@@ -32,6 +32,7 @@ describe('ListIssuesUseCase', () => {
       findById: vi.fn(),
       findByCKey: vi.fn(),
       findAll: vi.fn(),
+      findByDueDateRange: vi.fn(),
       countByStatus: vi.fn(),
       create: vi.fn(),
       update: vi.fn(),
@@ -61,6 +62,20 @@ describe('ListIssuesUseCase', () => {
     expect(result.meta).toEqual({ totalCount: 2, page: 1, totalPages: 1 });
   });
 
+  it('forwards the hasDueDate filter', async () => {
+    vi.mocked(repository.findAll).mockResolvedValue({
+      list: [],
+      meta: { totalCount: 0, page: 1, totalPages: 0 },
+    });
+    vi.mocked(issueUserExpander.expandAll).mockResolvedValue([]);
+
+    await useCase.execute(new ListIssuesQuery(20, 1, 'user-1', 'project-1', undefined, undefined, undefined, false));
+
+    expect(repository.findAll).toHaveBeenCalledWith(
+      expect.objectContaining({ projectId: 'project-1', hasDueDate: false }),
+    );
+  });
+
   it('returns an empty array when there are no issues', async () => {
     vi.mocked(repository.findAll).mockResolvedValue({
       list: [],

src/modules/issue/application/use-cases/list-issues/list-issues.use-case.ts

@@ -22,6 +22,7 @@ export class ListIssuesUseCase {
       status: query.status,
       text: query.text,
       assigneeId: query.assigneeId,
+      hasDueDate: query.hasDueDate,
     });
 
     return { list: await this.issueUserExpander.expandAll(list), meta };

src/modules/issue/application/use-cases/update-issue/update-issue.use-case.spec.ts

@@ -37,6 +37,7 @@ describe('UpdateIssueUseCase', () => {
       findById: vi.fn(),
       findByCKey: vi.fn(),
       findAll: vi.fn(),
+      findByDueDateRange: vi.fn(),
       countByStatus: vi.fn(),
       create: vi.fn(),
       update: vi.fn(),

src/modules/issue/domain/exceptions/invalid-calendar-range.exception.ts

@@ -0,0 +1,6 @@
+export class InvalidCalendarRangeException extends Error {
+  constructor(message: string) {
+    super(message);
+    this.name = 'InvalidCalendarRangeException';
+  }
+}

src/modules/issue/domain/repositories/issue.repository.interface.ts

@@ -16,7 +16,18 @@ export interface IIssueRepository {
     text?: string;
     assigneeId?: string;
     projectId?: string;
+    hasDueDate?: boolean;
   }): Promise<{ list: Issue[]; meta: PaginationMeta }>;
+  /** Задачи с dueDate в [from, to), по возрастанию dueDate, не больше limit */
+  findByDueDateRange(params: {
+    from: Date;
+    to: Date;
+    limit: number;
+    userId: string;
+    status?: string[];
+    assigneeId?: string;
+    projectId?: string;
+  }): Promise<Issue[]>;
   countByStatus(userId: string, projectId?: string): Promise<Array<{ status: string; count: number }>>;
   /** Сохраняет задачу и записи о её создании в историю (автор — reporter) */
   create(issue: Issue): Promise<Issue>;

src/modules/issue/domain/value-objects/calendar-range.vo.spec.ts

@@ -0,0 +1,37 @@
+import { describe, expect, it } from 'vitest';
+import { CalendarRange } from './calendar-range.vo.js';
+import { InvalidCalendarRangeException } from '../exceptions/invalid-calendar-range.exception.js';
+
+describe('CalendarRange', () => {
+  it('accepts a 6-week month grid', () => {
+    const from = new Date('2026-09-28T00:00:00+03:00');
+    const to = new Date('2026-11-09T00:00:00+03:00');
+
+    const range = CalendarRange.create({ from, to });
+
+    expect(range.from).toBe(from);
+    expect(range.to).toBe(to);
+  });
+
+  it('rejects an invalid date', () => {
+    expect(() => CalendarRange.create({ from: new Date('nope'), to: new Date() })).toThrow(
+      InvalidCalendarRangeException,
+    );
+  });
+
+  it('rejects from equal to or after to', () => {
+    const date = new Date('2026-10-01T00:00:00Z');
+
+    expect(() => CalendarRange.create({ from: date, to: date })).toThrow(InvalidCalendarRangeException);
+    expect(() => CalendarRange.create({ from: new Date('2026-10-02T00:00:00Z'), to: date })).toThrow(
+      InvalidCalendarRangeException,
+    );
+  });
+
+  it(`rejects a range longer than ${CalendarRange.MAX_DAYS} days`, () => {
+    const from = new Date('2026-10-01T00:00:00Z');
+    const to = new Date(from.getTime() + (CalendarRange.MAX_DAYS * 24 * 60 * 60 * 1000 + 1));
+
+    expect(() => CalendarRange.create({ from, to })).toThrow(InvalidCalendarRangeException);
+  });
+});

src/modules/issue/domain/value-objects/calendar-range.vo.ts

@@ -0,0 +1,33 @@
+import { InvalidCalendarRangeException } from '../exceptions/invalid-calendar-range.exception.js';
+
+const DAY_MS = 24 * 60 * 60 * 1000;
+
+/**
+ * Диапазон календаря по dueDate — полуоткрытый интервал [from, to).
+ * Границы — моменты времени: клиент сам считает начало/конец видимой сетки
+ * в своём часовом поясе, сервер про месяцы и часовые пояса не знает.
+ */
+export class CalendarRange {
+  /** Сетка месяца — 6 недель (42 дня), плюс запас на переход на летнее/зимнее время */
+  static readonly MAX_DAYS = 45;
+
+  private constructor(
+    public readonly from: Date,
+    public readonly to: Date,
+  ) {}
+
+  static create(params: { from: Date; to: Date }): CalendarRange {
+    const { from, to } = params;
+    if (Number.isNaN(from.getTime()) || Number.isNaN(to.getTime())) {
+      throw new InvalidCalendarRangeException('Некорректная дата from или to');
+    }
+    if (from >= to) {
+      throw new InvalidCalendarRangeException('Дата from должна быть раньше даты to');
+    }
+    if (to.getTime() - from.getTime() > CalendarRange.MAX_DAYS * DAY_MS) {
+      throw new InvalidCalendarRangeException(`Диапазон больше ${CalendarRange.MAX_DAYS} дней`);
+    }
+
+    return new CalendarRange(from, to);
+  }
+}

src/modules/issue/infrastructure/persistence/prisma/repositories/issue.prisma-repository.ts

@@ -18,6 +18,21 @@ function ownedByUser(userId: string) {
   return [{ assigneeId: userId }, { reporterId: userId }];
 }
 
+/** Видимость и фильтры, общие для списка и календаря */
+function commonFilters(params: {
+  userId: string;
+  status?: string[];
+  assigneeId?: string;
+  projectId?: string;
+}): Prisma.IssueWhereInput[] {
+  return [
+    { OR: ownedByUser(params.userId) },
+    ...(params.status?.length ? [{ status: { in: params.status } }] : []),
+    ...(params.assigneeId ? [{ assigneeId: params.assigneeId }] : []),
+    ...(params.projectId ? [{ projectId: params.projectId }] : []),
+  ];
+}
+
 /** Строки истории одного сохранения задачи — с общим changeId */
 function toChangeRows(
   issueId: number,
@@ -57,6 +72,7 @@ export class IssuePrismaRepository implements IIssueRepository {
     text?: string;
     assigneeId?: string;
     projectId?: string;
+    hasDueDate?: boolean;
   }): Promise<{ list: Issue[]; meta: PaginationMeta }> {
     const page = Math.max(1, params?.page);
     const limit = Math.max(1, params?.limit);
@@ -64,10 +80,8 @@ export class IssuePrismaRepository implements IIssueRepository {
     const queryArgs: IssueFindManyArgs = {
       where: {
         AND: [
-          { OR: ownedByUser(params.userId) },
+          ...commonFilters(params),
-          ...(params.status?.length ? [{ status: { in: params.status } }] : []),
+          ...(params.hasDueDate !== undefined ? [{ dueDate: params.hasDueDate ? { not: null } : null }] : []),
-          ...(params.assigneeId ? [{ assigneeId: params.assigneeId }] : []),
-          ...(params.projectId ? [{ projectId: params.projectId }] : []),
           ...(params.text
             ? [
                 {
@@ -98,6 +112,26 @@ export class IssuePrismaRepository implements IIssueRepository {
     };
   }
 
+  async findByDueDateRange(params: {
+    from: Date;
+    to: Date;
+    limit: number;
+    userId: string;
+    status?: string[];
+    assigneeId?: string;
+    projectId?: string;
+  }): Promise<Issue[]> {
+    const records = await this.prisma.issue.findMany({
+      where: {
+        AND: [...commonFilters(params), { dueDate: { gte: params.from, lt: params.to } }],
+      },
+      take: Math.max(1, params.limit),
+      orderBy: [{ dueDate: 'asc' }, { id: 'asc' }],
+    });
+
+    return records.map(IssuePrismaMapper.toDomain);
+  }
+
   async countByStatus(userId: string, projectId?: string): Promise<Array<{ status: string; count: number }>> {
     const groups = await this.prisma.issue.groupBy({
       by: ['status'],

src/modules/issue/issue.module.ts

@@ -15,6 +15,7 @@ import { GetIssueByCkeyUseCase } from './application/use-cases/get-issue-by-ckey
 import { IssueEventsService } from './application/services/issue-events.service.js';
 import { IssueUserExpanderService } from './application/services/issue-user-expander.service.js';
 import { GetIssueStatsUseCase } from './application/use-cases/get-issue-stats/get-issue-stats.use-case.js';
+import { ListCalendarIssuesUseCase } from './application/use-cases/list-calendar-issues/list-calendar-issues.use-case.js';
 
 @Module({
   imports: [PrismaModule, ProjectModule, UserModule],
@@ -27,6 +28,7 @@ import { GetIssueStatsUseCase } from './application/use-cases/get-issue-stats/ge
     UpdateIssueUseCase,
     DeleteIssueUseCase,
     GetIssueStatsUseCase,
+    ListCalendarIssuesUseCase,
     IssueResolver,
     IssueEventsService,
     IssueUserExpanderService,

src/modules/issue/presentation/controllers/issue.controller.ts

@@ -1,4 +1,5 @@
 import {
+  BadRequestException,
   Body,
   Controller,
   Delete,
@@ -37,6 +38,10 @@ import { GetIssueByCkeyUseCase } from '../../application/use-cases/get-issue-by-
 import { GetIssueByCkeyQuery } from '../../application/use-cases/get-issue-by-ckey/get-issue-by-ckey.query.js';
 import { IssueEventsService } from '../../application/services/issue-events.service.js';
 import { GetIssueStatsUseCase } from '../../application/use-cases/get-issue-stats/get-issue-stats.use-case.js';
+import { ListCalendarIssuesUseCase } from '../../application/use-cases/list-calendar-issues/list-calendar-issues.use-case.js';
+import { ListCalendarIssuesQuery } from '../../application/use-cases/list-calendar-issues/list-calendar-issues.query.js';
+import { CalendarIssuesQueryDto } from '../dto/calendar-issues-query.dto.js';
+import { InvalidCalendarRangeException } from '../../domain/exceptions/invalid-calendar-range.exception.js';
 
 @Controller('issues')
 export class IssueController {
@@ -48,6 +53,7 @@ export class IssueController {
     private readonly updateIssueUseCase: UpdateIssueUseCase,
     private readonly deleteIssueUseCase: DeleteIssueUseCase,
     private readonly getIssueStatsUseCase: GetIssueStatsUseCase,
+    private readonly listCalendarIssuesUseCase: ListCalendarIssuesUseCase,
     private readonly issueEventsService: IssueEventsService,
   ) {}
 
@@ -80,6 +86,24 @@ export class IssueController {
         query.status,
         query.text,
         query.assigneeId,
+        query.hasDueDate,
+      ),
+    );
+  }
+
+  /** Задачи с dueDate в [from, to) — для календаря, без пагинации */
+  @Get('calendar')
+  calendar(@Query() query: CalendarIssuesQueryDto, @Session() session: UserSession) {
+    return this.handleErrors(() =>
+      this.listCalendarIssuesUseCase.execute(
+        new ListCalendarIssuesQuery(
+          session.user.id,
+          new Date(query.from),
+          new Date(query.to),
+          query.projectId,
+          query.status,
+          query.assigneeId,
+        ),
       ),
     );
   }
@@ -162,6 +186,9 @@ export class IssueController {
       if (error instanceof IssueNotFoundException || error instanceof IssueProjectNotFoundException) {
         throw new NotFoundException(error.message);
       }
+      if (error instanceof InvalidCalendarRangeException) {
+        throw new BadRequestException(error.message);
+      }
       throw error;
     }
   }

src/modules/issue/presentation/dto/calendar-issues-query.dto.spec.ts

@@ -0,0 +1,46 @@
+import { describe, expect, it } from 'vitest';
+import { plainToInstance } from 'class-transformer';
+import { validateSync } from 'class-validator';
+import { CalendarIssuesQueryDto } from './calendar-issues-query.dto.js';
+
+const parse = (query: Record<string, unknown>) => {
+  const dto = plainToInstance(CalendarIssuesQueryDto, query);
+  return { dto, errors: validateSync(dto) };
+};
+
+describe('CalendarIssuesQueryDto', () => {
+  it('accepts moments with an offset or Z', () => {
+    const { errors } = parse({ from: '2026-09-28T00:00:00+03:00', to: '2026-11-09T00:00:00.000Z' });
+
+    expect(errors).toHaveLength(0);
+  });
+
+  it('requires from and to', () => {
+    const { errors } = parse({});
+
+    expect(errors.map((el) => el.property)).toEqual(['from', 'to']);
+  });
+
+  it('rejects a moment without an offset', () => {
+    const { errors } = parse({ from: '2026-09-28T00:00:00', to: '2026-11-09T00:00:00Z' });
+
+    expect(errors.map((el) => el.property)).toEqual(['from']);
+  });
+
+  it('rejects a plain date', () => {
+    const { errors } = parse({ from: '2026-09-28', to: '2026-11-09T00:00:00Z' });
+
+    expect(errors.map((el) => el.property)).toEqual(['from']);
+  });
+
+  it('parses the status list', () => {
+    const { dto, errors } = parse({
+      from: '2026-09-28T00:00:00Z',
+      to: '2026-11-09T00:00:00Z',
+      status: 'OPEN,IN_PROGRESS',
+    });
+
+    expect(dto.status).toEqual(['OPEN', 'IN_PROGRESS']);
+    expect(errors).toHaveLength(0);
+  });
+});

src/modules/issue/presentation/dto/calendar-issues-query.dto.ts

@@ -0,0 +1,28 @@
+import { IsISO8601, Matches } from 'class-validator';
+import { StringDecorator } from '../../../../common/decorators/validators.js';
+import { IssueStatusListDecorator } from './issue-status-list.decorator.js';
+
+/** Без смещения дата трактовалась бы в часовом поясе сервера */
+const WITH_OFFSET = /(Z|[+-]\d{2}:\d{2})$/;
+const MOMENT_MESSAGE = '$property: ожидается ISO 8601 со смещением, например 2026-10-01T00:00:00+03:00';
+
+export class CalendarIssuesQueryDto {
+  /** Начало видимой сетки календаря, включительно */
+  @IsISO8601({ strict: true }, { message: MOMENT_MESSAGE })
+  @Matches(WITH_OFFSET, { message: MOMENT_MESSAGE })
+  from: string;
+
+  /** Конец видимой сетки календаря, не включительно */
+  @IsISO8601({ strict: true }, { message: MOMENT_MESSAGE })
+  @Matches(WITH_OFFSET, { message: MOMENT_MESSAGE })
+  to: string;
+
+  @StringDecorator({ isOptional: true })
+  projectId?: string;
+
+  @StringDecorator({ isOptional: true })
+  assigneeId?: string;
+
+  @IssueStatusListDecorator()
+  status?: string[];
+}

src/modules/issue/presentation/dto/filter-issue.dto.spec.ts

@@ -49,3 +49,28 @@ describe('FilterIssueDto.status', () => {
     expect(errors.map((el) => el.property)).toEqual(['status']);
   });
 });
+
+describe('FilterIssueDto.hasDueDate', () => {
+  it('leaves hasDueDate undefined when absent', () => {
+    const { dto, errors } = parse({});
+
+    expect(dto.hasDueDate).toBeUndefined();
+    expect(errors).toHaveLength(0);
+  });
+
+  it.each([
+    ['true', true],
+    ['false', false],
+  ])('parses "%s"', (value, expected) => {
+    const { dto, errors } = parse({ hasDueDate: value });
+
+    expect(dto.hasDueDate).toBe(expected);
+    expect(errors).toHaveLength(0);
+  });
+
+  it('rejects a non-boolean value', () => {
+    const { errors } = parse({ hasDueDate: 'yes' });
+
+    expect(errors.map((el) => el.property)).toEqual(['hasDueDate']);
+  });
+});

src/modules/issue/presentation/dto/filter-issue.dto.ts

@@ -1,7 +1,5 @@
-import { Transform } from 'class-transformer';
+import { BooleanDecorator, IntDecorator, StringDecorator } from '../../../../common/decorators/validators.js';
-import { ArrayNotEmpty, IsArray, IsIn, IsOptional } from 'class-validator';
+import { IssueStatusListDecorator } from './issue-status-list.decorator.js';
-import { IntDecorator, StringDecorator } from '../../../../common/decorators/validators.js';
-import { ISSUE_STATUSES } from '../../domain/value-objects/issue-status.vo.js';
 
 export class FilterIssueDto {
   @IntDecorator({ isOptional: true })
@@ -16,22 +14,13 @@ export class FilterIssueDto {
   @StringDecorator({ isOptional: true })
   assigneeId?: string;
 
-  /** Comma-separated (`?status=OPEN,IN_PROGRESS`) or repeated (`?status=OPEN&status=IN_PROGRESS`) */
+  @IssueStatusListDecorator()
-  @IsOptional()
-  @Transform(({ value }) =>
-    value === undefined || value === null
-      ? undefined
-      : ([] as unknown[])
-          .concat(value)
-          .flatMap((el) => String(el).split(','))
-          .map((el) => el.trim())
-          .filter(Boolean),
-  )
-  @IsArray()
-  @ArrayNotEmpty()
-  @IsIn(ISSUE_STATUSES.map((status) => status.alias), { each: true })
   status?: string[];
 
   @StringDecorator({ isOptional: true })
   projectId?: string;
+
+  /** false — только задачи без срока (панель «без срока» рядом с календарём), true — только со сроком */
+  @BooleanDecorator({ isOptional: true })
+  hasDueDate?: boolean;
 }

src/modules/issue/presentation/dto/issue-status-list.decorator.ts

@@ -0,0 +1,26 @@
+import { applyDecorators } from '@nestjs/common';
+import { Transform } from 'class-transformer';
+import { ArrayNotEmpty, IsArray, IsIn, IsOptional } from 'class-validator';
+import { ISSUE_STATUSES } from '../../domain/value-objects/issue-status.vo.js';
+
+/** Comma-separated (`?status=OPEN,IN_PROGRESS`) or repeated (`?status=OPEN&status=IN_PROGRESS`) */
+export function IssueStatusListDecorator() {
+  return applyDecorators(
+    IsOptional(),
+    Transform(({ value }) =>
+      value === undefined || value === null
+        ? undefined
+        : ([] as unknown[])
+            .concat(value)
+            .flatMap((el) => String(el).split(','))
+            .map((el) => el.trim())
+            .filter(Boolean),
+    ),
+    IsArray(),
+    ArrayNotEmpty(),
+    IsIn(
+      ISSUE_STATUSES.map((status) => status.alias),
+      { each: true },
+    ),
+  );
+}

src/modules/issue/presentation/graphql/calendar-issues.type.ts

@@ -0,0 +1,12 @@
+import { Field, ObjectType } from '@nestjs/graphql';
+import { IssueDetailType } from './issue-detail.type.js';
+
+@ObjectType('CalendarIssues')
+export class CalendarIssuesType {
+  @Field(() => [IssueDetailType])
+  list: IssueDetailType[];
+
+  /** В диапазоне задач больше, чем вернули — клиенту стоит сузить фильтр */
+  @Field()
+  truncated: boolean;
+}

src/modules/issue/presentation/resolvers/issue.resolver.ts

@@ -1,4 +1,4 @@
-import { NotFoundException } from '@nestjs/common';
+import { BadRequestException, NotFoundException } from '@nestjs/common';
 import { Args, Int, Mutation, Query, Resolver } from '@nestjs/graphql';
 import { Session, type UserSession } from '@thallesp/nestjs-better-auth';
 import { CreateIssueUseCase } from '../../application/use-cases/create-issue/create-issue.use-case.js';
@@ -21,6 +21,11 @@ import { IssueDetailType } from '../graphql/issue-detail.type.js';
 import { IssuePageType } from '../graphql/issue-page.type.js';
 import { CreateIssueInput } from '../graphql/create-issue.input.js';
 import { UpdateIssueInput } from '../graphql/update-issue.input.js';
+import { CalendarIssuesType } from '../graphql/calendar-issues.type.js';
+import { ListCalendarIssuesUseCase } from '../../application/use-cases/list-calendar-issues/list-calendar-issues.use-case.js';
+import { ListCalendarIssuesQuery } from '../../application/use-cases/list-calendar-issues/list-calendar-issues.query.js';
+import { CalendarIssuesDto } from '../../application/dto/calendar-issues.dto.js';
+import { InvalidCalendarRangeException } from '../../domain/exceptions/invalid-calendar-range.exception.js';
 import { PaginationMeta } from '../../../../common/interfaces/pagination-meta.interface.js';
 
 @Resolver(() => IssueType)
@@ -32,6 +37,7 @@ export class IssueResolver {
     private readonly listIssuesUseCase: ListIssuesUseCase,
     private readonly updateIssueUseCase: UpdateIssueUseCase,
     private readonly deleteIssueUseCase: DeleteIssueUseCase,
+    private readonly listCalendarIssuesUseCase: ListCalendarIssuesUseCase,
   ) {}
 
   @Query(() => IssueDetailType, { name: 'issue' })
@@ -50,8 +56,37 @@ export class IssueResolver {
     @Args('page', { type: () => Int, defaultValue: 0 }) page: number,
     @Session() session: UserSession,
     @Args('projectId', { type: () => String, nullable: true }) projectId?: string,
+    @Args('hasDueDate', { type: () => Boolean, nullable: true }) hasDueDate?: boolean,
   ): Promise<{ list: IssueWithUsersDto[]; meta: PaginationMeta }> {
-    return this.listIssuesUseCase.execute(new ListIssuesQuery(limit, page, session.user.id, projectId));
+    return this.listIssuesUseCase.execute(
+      new ListIssuesQuery(
+        limit,
+        page,
+        session.user.id,
+        projectId,
+        undefined,
+        undefined,
+        undefined,
+        hasDueDate ?? undefined,
+      ),
+    );
+  }
+
+  /** Задачи с dueDate в [from, to) — для календаря, без пагинации */
+  @Query(() => CalendarIssuesType, { name: 'calendarIssues' })
+  calendar(
+    @Args('from', { type: () => Date }) from: Date,
+    @Args('to', { type: () => Date }) to: Date,
+    @Session() session: UserSession,
+    @Args('projectId', { type: () => String, nullable: true }) projectId?: string,
+    @Args('status', { type: () => [String], nullable: true }) status?: string[],
+    @Args('assigneeId', { type: () => String, nullable: true }) assigneeId?: string,
+  ): Promise<CalendarIssuesDto> {
+    return this.handleErrors(() =>
+      this.listCalendarIssuesUseCase.execute(
+        new ListCalendarIssuesQuery(session.user.id, from, to, projectId, status, assigneeId),
+      ),
+    );
   }
 
   @Mutation(() => IssueType, { name: 'createIssue' })
@@ -108,6 +143,9 @@ export class IssueResolver {
       if (error instanceof IssueNotFoundException || error instanceof IssueProjectNotFoundException) {
         throw new NotFoundException(error.message);
       }
+      if (error instanceof InvalidCalendarRangeException) {
+        throw new BadRequestException(error.message);
+      }
       throw error;
     }
   }