feat(frontend): add race details page with completed metrics

Implement race detail routing and UI with client-side pace calculation so completed race metrics are visible from the calendar flow.

Made-with: Cursor

.gitignore

@@ -2,3 +2,5 @@ node_modules/
 dist/
 .env
 *.log
+*plan*
+*PLAN*

PLAN.md

@@ -177,7 +177,7 @@ flowchart LR
 ## 10. Чеклист задач (implementation todos)
 
 1. Монорепо: `frontend/` + `backend/`, BEM, токены, роутер.
-2. Postgres в docker-compose, миграции таблицы `races`, бэкенд читает `DB_`*.
+2. Postgres в docker-compose, миграции таблицы `races`, бэкенд читает `DB`_*.
 3. REST CRUD + разовый seed (CSV и/или JSON) → БД.
 4. Клиент API на фронте, типы, загрузка данных для экранов и PR.
 5. Экраны месяц и год, модалка по дате.

frontend/src/api/errors.ts

@@ -0,0 +1,75 @@
+export type ApiErrorCode =
+  | "validation_error"
+  | "not_found"
+  | "database_unavailable"
+  | "conflict"
+  | "network_error"
+  | "unknown_error";
+
+export interface ApiErrorPayload {
+  error?: string;
+  details?: string[];
+}
+
+export class ApiError extends Error {
+  public readonly code: ApiErrorCode;
+  public readonly status: number | null;
+  public readonly details: string[];
+
+  constructor(params: {
+    code: ApiErrorCode;
+    message: string;
+    status?: number | null;
+    details?: string[];
+  }) {
+    super(params.message);
+    this.name = "ApiError";
+    this.code = params.code;
+    this.status = params.status ?? null;
+    this.details = params.details ?? [];
+  }
+}
+
+function normalizeApiCode(value: string | undefined): ApiErrorCode {
+  if (
+    value === "validation_error" ||
+    value === "not_found" ||
+    value === "database_unavailable" ||
+    value === "conflict"
+  ) {
+    return value;
+  }
+  return "unknown_error";
+}
+
+export function toApiError(status: number, payload: unknown): ApiError {
+  const maybePayload = payload as ApiErrorPayload;
+  const code = normalizeApiCode(maybePayload?.error);
+  const details = Array.isArray(maybePayload?.details)
+    ? maybePayload.details.filter((item): item is string => typeof item === "string")
+    : [];
+
+  return new ApiError({
+    code,
+    status,
+    message: getApiErrorMessage(code),
+    details,
+  });
+}
+
+export function getApiErrorMessage(code: ApiErrorCode): string {
+  switch (code) {
+    case "validation_error":
+      return "Проверьте введённые данные и попробуйте снова.";
+    case "not_found":
+      return "Запись не найдена.";
+    case "database_unavailable":
+      return "Сервис временно недоступен. Попробуйте позже.";
+    case "conflict":
+      return "Запись с таким идентификатором уже существует.";
+    case "network_error":
+      return "Не удалось связаться с сервером.";
+    default:
+      return "Произошла неизвестная ошибка.";
+  }
+}

frontend/src/api/http.ts

@@ -0,0 +1,55 @@
+import { ApiError, toApiError } from "./errors";
+
+const API_BASE_URL = (import.meta.env.VITE_API_BASE_URL as string | undefined)?.trim() || "http://localhost:3001";
+
+function buildUrl(path: string): string {
+  const normalizedPath = path.startsWith("/") ? path : `/${path}`;
+  return `${API_BASE_URL}${normalizedPath}`;
+}
+
+async function parseResponseBody(response: Response): Promise<unknown> {
+  const contentType = response.headers.get("content-type") ?? "";
+  if (!contentType.includes("application/json")) {
+    return null;
+  }
+
+  try {
+    return await response.json();
+  } catch {
+    return null;
+  }
+}
+
+export async function requestJson<T>(path: string, init?: RequestInit): Promise<T> {
+  try {
+    const response = await fetch(buildUrl(path), {
+      ...init,
+      headers: {
+        "Content-Type": "application/json",
+        ...(init?.headers ?? {}),
+      },
+    });
+
+    if (response.status === 204) {
+      return undefined as T;
+    }
+
+    const payload = await parseResponseBody(response);
+
+    if (!response.ok) {
+      throw toApiError(response.status, payload);
+    }
+
+    return payload as T;
+  } catch (error) {
+    if (error instanceof ApiError) {
+      throw error;
+    }
+
+    throw new ApiError({
+      code: "network_error",
+      status: null,
+      message: "Не удалось связаться с сервером.",
+    });
+  }
+}

frontend/src/api/index.ts

@@ -1 +1,3 @@
-export {};
+export type { CreateRacePayload, Race, RacesQuery, RaceStatus, UpdateRacePayload } from "./types";
+export { ApiError, getApiErrorMessage } from "./errors";
+export { getRaceById, getRaces, createRace, updateRace, deleteRace } from "./races";

frontend/src/api/races.ts

@@ -0,0 +1,112 @@
+import { ApiError } from "./errors";
+import { requestJson } from "./http";
+import type { CreateRacePayload, Race, RacesQuery, UpdateRacePayload } from "./types";
+
+function isString(value: unknown): value is string {
+  return typeof value === "string";
+}
+
+function isNullableString(value: unknown): value is string | null {
+  return value === null || typeof value === "string";
+}
+
+function normalizeRace(input: unknown): Race {
+  const race = input as Partial<Race>;
+
+  const isValid =
+    isString(race?.id) &&
+    isString(race?.date) &&
+    isString(race?.title) &&
+    typeof race?.distanceKm === "number" &&
+    (race?.status === null || race?.status === "planned" || race?.status === "completed") &&
+    isNullableString(race?.officialUrl) &&
+    isNullableString(race?.startTime) &&
+    isNullableString(race?.clusterSchedule) &&
+    isNullableString(race?.bibPickup) &&
+    isNullableString(race?.bibNumber) &&
+    isNullableString(race?.finishTime) &&
+    isNullableString(race?.notes) &&
+    isString(race?.createdAt) &&
+    (race?.updatedAt === null || isString(race?.updatedAt));
+
+  if (!isValid) {
+    throw new ApiError({
+      code: "unknown_error",
+      status: null,
+      message: "Некорректный формат данных от API.",
+    });
+  }
+
+  return {
+    id: race.id,
+    date: race.date,
+    title: race.title,
+    distanceKm: race.distanceKm,
+    status: race.status,
+    officialUrl: race.officialUrl,
+    startTime: race.startTime,
+    clusterSchedule: race.clusterSchedule,
+    bibPickup: race.bibPickup,
+    bibNumber: race.bibNumber,
+    finishTime: race.finishTime,
+    notes: race.notes,
+    createdAt: race.createdAt,
+    updatedAt: race.updatedAt,
+  };
+}
+
+function buildRacesQuery(query?: RacesQuery): string {
+  if (!query) {
+    return "";
+  }
+
+  const params = new URLSearchParams();
+  if (typeof query.year === "number") {
+    params.set("year", String(query.year));
+  }
+  if (typeof query.month === "number") {
+    params.set("month", String(query.month));
+  }
+
+  const serialized = params.toString();
+  return serialized ? `?${serialized}` : "";
+}
+
+export async function getRaces(query?: RacesQuery): Promise<Race[]> {
+  const response = await requestJson<unknown[]>(`/races${buildRacesQuery(query)}`);
+  if (!Array.isArray(response)) {
+    throw new ApiError({
+      code: "unknown_error",
+      status: null,
+      message: "Некорректный формат списка забегов от API.",
+    });
+  }
+
+  return response.map(normalizeRace);
+}
+
+export async function getRaceById(id: string): Promise<Race> {
+  return normalizeRace(await requestJson<unknown>(`/races/${id}`));
+}
+
+export async function createRace(payload: CreateRacePayload): Promise<Race> {
+  return normalizeRace(
+    await requestJson<unknown>("/races", {
+      method: "POST",
+      body: JSON.stringify(payload),
+    }),
+  );
+}
+
+export async function updateRace(id: string, payload: UpdateRacePayload): Promise<Race> {
+  return normalizeRace(
+    await requestJson<unknown>(`/races/${id}`, {
+      method: "PATCH",
+      body: JSON.stringify(payload),
+    }),
+  );
+}
+
+export async function deleteRace(id: string): Promise<void> {
+  await requestJson<void>(`/races/${id}`, { method: "DELETE" });
+}

frontend/src/api/types.ts

@@ -0,0 +1,40 @@
+export type RaceStatus = "planned" | "completed";
+
+export interface Race {
+  id: string;
+  date: string;
+  title: string;
+  distanceKm: number;
+  status: RaceStatus | null;
+  officialUrl: string | null;
+  startTime: string | null;
+  clusterSchedule: string | null;
+  bibPickup: string | null;
+  bibNumber: string | null;
+  finishTime: string | null;
+  notes: string | null;
+  createdAt: string;
+  updatedAt: string | null;
+}
+
+export interface RacesQuery {
+  year?: number;
+  month?: number;
+}
+
+export interface CreateRacePayload {
+  id: string;
+  date: string;
+  title: string;
+  distanceKm: number;
+  status?: RaceStatus | null;
+  officialUrl?: string | null;
+  startTime?: string | null;
+  clusterSchedule?: string | null;
+  bibPickup?: string | null;
+  bibNumber?: string | null;
+  finishTime?: string | null;
+  notes?: string | null;
+}
+
+export type UpdateRacePayload = Partial<Omit<CreateRacePayload, "id">>;

frontend/src/app/router.tsx

@@ -2,6 +2,7 @@ import { createBrowserRouter } from "react-router-dom";
 import { AppLayout } from "./layouts/AppLayout";
 import { DashboardPage } from "../pages/DashboardPage";
 import { RacesPage } from "../pages/RacesPage";
+import { RaceDetailsPage } from "../pages/RaceDetailsPage";
 
 export const appRouter = createBrowserRouter([
   {
@@ -9,7 +10,8 @@ export const appRouter = createBrowserRouter([
     element: <AppLayout />,
     children: [
       { index: true, element: <DashboardPage /> },
-      { path: "races", element: <RacesPage /> }
+      { path: "races", element: <RacesPage /> },
-    ]
+      { path: "races/:raceId", element: <RaceDetailsPage /> },
-  }
+    ],
+  },
 ]);

frontend/src/lib/index.ts

@@ -1 +1,11 @@
-export {};
+export {
+  formatDistance,
+  formatRaceDate,
+  getPaceLabel,
+  getRaceCountdownLabel,
+  getRaceStatusLabel,
+  parseFinishTimeToSeconds,
+  sortByDateAsc,
+  sortByDateDesc,
+  splitRacesByDate,
+} from "./raceMetrics";

frontend/src/lib/raceMetrics.ts

@@ -0,0 +1,110 @@
+import type { Race } from "../api";
+
+const MS_IN_DAY = 24 * 60 * 60 * 1000;
+
+function parseRaceDate(date: string): Date {
+  return new Date(`${date}T00:00:00`);
+}
+
+export function parseFinishTimeToSeconds(value: string | null): number | null {
+  if (!value) {
+    return null;
+  }
+
+  const parts = value.split(":").map((part) => Number(part));
+  if (parts.some((part) => Number.isNaN(part) || part < 0)) {
+    return null;
+  }
+
+  if (parts.length === 2) {
+    const [minutes, seconds] = parts;
+    return minutes * 60 + seconds;
+  }
+
+  if (parts.length === 3) {
+    const [hours, minutes, seconds] = parts;
+    return hours * 3600 + minutes * 60 + seconds;
+  }
+
+  return null;
+}
+
+export function formatDistance(distanceKm: number): string {
+  return `${distanceKm.toLocaleString("ru-RU", { maximumFractionDigits: 1 })} км`;
+}
+
+export function formatRaceDate(date: string): string {
+  return parseRaceDate(date).toLocaleDateString("ru-RU", {
+    day: "2-digit",
+    month: "long",
+    year: "numeric",
+  });
+}
+
+export function sortByDateAsc(races: Race[]): Race[] {
+  return [...races].sort((left, right) => parseRaceDate(left.date).getTime() - parseRaceDate(right.date).getTime());
+}
+
+export function sortByDateDesc(races: Race[]): Race[] {
+  return [...races].sort((left, right) => parseRaceDate(right.date).getTime() - parseRaceDate(left.date).getTime());
+}
+
+export function splitRacesByDate(races: Race[], now: Date = new Date()): { upcoming: Race[]; past: Race[] } {
+  const today = new Date(now);
+  today.setHours(0, 0, 0, 0);
+
+  const upcoming: Race[] = [];
+  const past: Race[] = [];
+
+  for (const race of races) {
+    if (parseRaceDate(race.date).getTime() >= today.getTime()) {
+      upcoming.push(race);
+    } else {
+      past.push(race);
+    }
+  }
+
+  return {
+    upcoming: sortByDateAsc(upcoming),
+    past: sortByDateDesc(past),
+  };
+}
+
+export function getRaceCountdownLabel(date: string, now: Date = new Date()): string {
+  const today = new Date(now);
+  today.setHours(0, 0, 0, 0);
+
+  const target = parseRaceDate(date);
+  const days = Math.ceil((target.getTime() - today.getTime()) / MS_IN_DAY);
+
+  if (days <= 0) {
+    return "сегодня";
+  }
+  if (days === 1) {
+    return "через 1 день";
+  }
+  if (days < 5) {
+    return `через ${days} дня`;
+  }
+  return `через ${days} дней`;
+}
+
+export function getPaceLabel(finishTime: string | null, distanceKm: number): string | null {
+  const totalSeconds = parseFinishTimeToSeconds(finishTime);
+  if (!totalSeconds || distanceKm <= 0) {
+    return null;
+  }
+
+  const paceSeconds = Math.round(totalSeconds / distanceKm);
+  const paceMinutes = Math.floor(paceSeconds / 60);
+  const paceRemainder = paceSeconds % 60;
+
+  return `${String(paceMinutes).padStart(2, "0")}:${String(paceRemainder).padStart(2, "0")} /км`;
+}
+
+export function getRaceStatusLabel(status: Race["status"]): string {
+  if (status === "completed") {
+    return "пробежал";
+  }
+  return "планирую";
+}

frontend/src/pages/DashboardPage.tsx

@@ -1,8 +1,167 @@
+import { useEffect, useMemo, useState } from "react";
+import type { Race } from "../api";
+import { ApiError, getRaces } from "../api";
+import {
+  formatDistance,
+  formatRaceDate,
+  getRaceCountdownLabel,
+  parseFinishTimeToSeconds,
+  splitRacesByDate,
+} from "../lib";
+
+function getErrorMessage(error: unknown): string {
+  if (error instanceof ApiError) {
+    return error.message;
+  }
+  return "Не удалось загрузить данные dashboard.";
+}
+
 export function DashboardPage(): JSX.Element {
+  const [races, setRaces] = useState<Race[]>([]);
+  const [isLoading, setIsLoading] = useState<boolean>(true);
+  const [errorMessage, setErrorMessage] = useState<string | null>(null);
+
+  useEffect(() => {
+    let isMounted = true;
+
+    async function loadDashboardData(): Promise<void> {
+      try {
+        const items = await getRaces();
+        if (!isMounted) {
+          return;
+        }
+        setRaces(items);
+        setErrorMessage(null);
+      } catch (error) {
+        if (!isMounted) {
+          return;
+        }
+        setErrorMessage(getErrorMessage(error));
+      } finally {
+        if (isMounted) {
+          setIsLoading(false);
+        }
+      }
+    }
+
+    void loadDashboardData();
+    return () => {
+      isMounted = false;
+    };
+  }, []);
+
+  const dashboardMetrics = useMemo(() => {
+    const { upcoming, past } = splitRacesByDate(races);
+    const completed = races.filter((race) => race.status === "completed");
+
+    const nextRace = upcoming[0] ?? null;
+    const lastResult = past.find((race) => race.status === "completed") ?? null;
+
+    let personalRecord: Race | null = null;
+    let personalRecordSeconds = Number.POSITIVE_INFINITY;
+
+    for (const race of completed) {
+      const finishSeconds = parseFinishTimeToSeconds(race.finishTime);
+      if (!finishSeconds) {
+        continue;
+      }
+
+      const candidate = finishSeconds / race.distanceKm;
+      if (candidate < personalRecordSeconds) {
+        personalRecordSeconds = candidate;
+        personalRecord = race;
+      }
+    }
+
+    const currentYear = new Date().getFullYear();
+    const seasonRaces = races.filter((race) => new Date(`${race.date}T00:00:00`).getFullYear() === currentYear);
+    const seasonCompleted = seasonRaces.filter((race) => race.status === "completed");
+
+    return {
+      nextRace,
+      lastResult,
+      personalRecord,
+      seasonTotal: seasonRaces.length,
+      seasonCompletedCount: seasonCompleted.length,
+    };
+  }, [races]);
+
+  if (isLoading) {
     return (
-    <section className="page page--dashboard">
+      <section className="page page--dashboard" aria-busy="true">
         <h1 className="page__title">Dashboard</h1>
-      <p className="page__subtitle">Overview cards and quick actions will be added in the next task.</p>
+        <p className="page__subtitle">Загружаем ваши старты...</p>
+      </section>
+    );
+  }
+
+  if (errorMessage) {
+    return (
+      <section className="page page--dashboard" role="alert">
+        <h1 className="page__title">Dashboard</h1>
+        <p className="page__subtitle page__subtitle--error">{errorMessage}</p>
+      </section>
+    );
+  }
+
+  return (
+    <section className="page page--dashboard">
+      <h1 className="page__title">Dashboard</h1>
+      <p className="page__subtitle">Ключевые метрики по вашему календарю стартов.</p>
+
+      <div className="dashboard-grid" aria-label="Ключевые метрики">
+        <article className="dashboard-card">
+          <h2 className="dashboard-card__title">Ближайший старт</h2>
+          {dashboardMetrics.nextRace ? (
+            <>
+              <p className="dashboard-card__value">{dashboardMetrics.nextRace.title}</p>
+              <p className="dashboard-card__meta">
+                {formatRaceDate(dashboardMetrics.nextRace.date)} · {formatDistance(dashboardMetrics.nextRace.distanceKm)}
+              </p>
+              <p className="dashboard-card__hint">{getRaceCountdownLabel(dashboardMetrics.nextRace.date)}</p>
+            </>
+          ) : (
+            <p className="dashboard-card__empty">Нет запланированных стартов.</p>
+          )}
+        </article>
+
+        <article className="dashboard-card">
+          <h2 className="dashboard-card__title">Последний результат</h2>
+          {dashboardMetrics.lastResult ? (
+            <>
+              <p className="dashboard-card__value">{dashboardMetrics.lastResult.finishTime ?? "время не указано"}</p>
+              <p className="dashboard-card__meta">
+                {dashboardMetrics.lastResult.title} · {formatDistance(dashboardMetrics.lastResult.distanceKm)}
+              </p>
+              <p className="dashboard-card__hint">{formatRaceDate(dashboardMetrics.lastResult.date)}</p>
+            </>
+          ) : (
+            <p className="dashboard-card__empty">Пока нет завершённых стартов.</p>
+          )}
+        </article>
+
+        <article className="dashboard-card">
+          <h2 className="dashboard-card__title">Личный рекорд</h2>
+          {dashboardMetrics.personalRecord ? (
+            <>
+              <p className="dashboard-card__value">{dashboardMetrics.personalRecord.finishTime ?? "время не указано"}</p>
+              <p className="dashboard-card__meta">
+                {dashboardMetrics.personalRecord.title} · {formatDistance(dashboardMetrics.personalRecord.distanceKm)}
+              </p>
+              <p className="dashboard-card__hint">Лучший темп среди завершённых стартов.</p>
+            </>
+          ) : (
+            <p className="dashboard-card__empty">Недостаточно данных для PR.</p>
+          )}
+        </article>
+
+        <article className="dashboard-card">
+          <h2 className="dashboard-card__title">Сезон</h2>
+          <p className="dashboard-card__value">{dashboardMetrics.seasonTotal}</p>
+          <p className="dashboard-card__meta">стартов в этом году</p>
+          <p className="dashboard-card__hint">Завершено: {dashboardMetrics.seasonCompletedCount}</p>
+        </article>
+      </div>
     </section>
   );
 }

frontend/src/pages/RaceDetailsPage.tsx

@@ -0,0 +1,159 @@
+import { useEffect, useMemo, useState } from "react";
+import { Link, useParams } from "react-router-dom";
+import { ApiError, getRaceById } from "../api";
+import { formatDistance, formatRaceDate, getPaceLabel, getRaceStatusLabel } from "../lib";
+import type { Race } from "../api";
+
+function getErrorMessage(error: unknown): string {
+  if (error instanceof ApiError) {
+    return error.message;
+  }
+  return "Не удалось загрузить карточку старта.";
+}
+
+export function RaceDetailsPage(): JSX.Element {
+  const { raceId } = useParams<{ raceId: string }>();
+  const [race, setRace] = useState<Race | null>(null);
+  const [isLoading, setIsLoading] = useState<boolean>(true);
+  const [errorMessage, setErrorMessage] = useState<string | null>(null);
+
+  useEffect(() => {
+    let isMounted = true;
+
+    async function loadRace(): Promise<void> {
+      if (!raceId) {
+        setErrorMessage("Не найден идентификатор старта.");
+        setIsLoading(false);
+        return;
+      }
+
+      try {
+        const item = await getRaceById(raceId);
+        if (!isMounted) {
+          return;
+        }
+        setRace(item);
+        setErrorMessage(null);
+      } catch (error) {
+        if (!isMounted) {
+          return;
+        }
+        setErrorMessage(getErrorMessage(error));
+      } finally {
+        if (isMounted) {
+          setIsLoading(false);
+        }
+      }
+    }
+
+    void loadRace();
+    return () => {
+      isMounted = false;
+    };
+  }, [raceId]);
+
+  const paceLabel = useMemo(() => {
+    if (!race || race.status !== "completed") {
+      return null;
+    }
+    return getPaceLabel(race.finishTime, race.distanceKm);
+  }, [race]);
+
+  if (isLoading) {
+    return (
+      <section className="page page--race-details" aria-busy="true">
+        <h1 className="page__title">Карточка старта</h1>
+        <p className="page__subtitle">Загружаем данные старта...</p>
+      </section>
+    );
+  }
+
+  if (errorMessage || !race) {
+    return (
+      <section className="page page--race-details" role="alert">
+        <h1 className="page__title">Карточка старта</h1>
+        <p className="page__subtitle page__subtitle--error">{errorMessage ?? "Старт не найден."}</p>
+        <Link className="page-link" to="/races">
+          Вернуться к списку стартов
+        </Link>
+      </section>
+    );
+  }
+
+  const isCompleted = race.status === "completed";
+
+  return (
+    <section className="page page--race-details">
+      <div className="race-details-header">
+        <div className="race-details-header__main">
+          <h1 className="page__title">{race.title}</h1>
+          <p className="page__subtitle">
+            {formatRaceDate(race.date)} · {formatDistance(race.distanceKm)}
+          </p>
+        </div>
+        <span
+          className={
+            isCompleted
+              ? "race-card__status race-card__status--completed"
+              : "race-card__status race-card__status--planned"
+          }
+        >
+          {getRaceStatusLabel(race.status)}
+        </span>
+      </div>
+
+      <div className="race-details-grid">
+        <article className="race-details-card">
+          <h2 className="race-details-card__title">Основная информация</h2>
+          <dl className="race-details-meta">
+            <div className="race-details-meta__item">
+              <dt className="race-details-meta__key">Дата</dt>
+              <dd className="race-details-meta__value">{formatRaceDate(race.date)}</dd>
+            </div>
+            <div className="race-details-meta__item">
+              <dt className="race-details-meta__key">Дистанция</dt>
+              <dd className="race-details-meta__value">{formatDistance(race.distanceKm)}</dd>
+            </div>
+            <div className="race-details-meta__item">
+              <dt className="race-details-meta__key">Статус</dt>
+              <dd className="race-details-meta__value">{getRaceStatusLabel(race.status)}</dd>
+            </div>
+          </dl>
+        </article>
+
+        <article className="race-details-card">
+          <h2 className="race-details-card__title">Completed-метрики</h2>
+          {isCompleted ? (
+            <dl className="race-details-meta">
+              <div className="race-details-meta__item">
+                <dt className="race-details-meta__key">Время</dt>
+                <dd className="race-details-meta__value">{race.finishTime ?? "время не указано"}</dd>
+              </div>
+              <div className="race-details-meta__item">
+                <dt className="race-details-meta__key">Темп</dt>
+                <dd className="race-details-meta__value">{paceLabel ?? "не удалось вычислить"}</dd>
+              </div>
+              <div className="race-details-meta__item">
+                <dt className="race-details-meta__key">Стартовый номер</dt>
+                <dd className="race-details-meta__value">{race.bibNumber ?? "не указан"}</dd>
+              </div>
+            </dl>
+          ) : (
+            <p className="race-details-card__empty">
+              Метрики появятся после завершения старта и ввода результата.
+            </p>
+          )}
+        </article>
+      </div>
+
+      <article className="race-details-card race-details-card--notes">
+        <h2 className="race-details-card__title">Заметки</h2>
+        <p className="race-details-card__notes">{race.notes?.trim() ? race.notes : "Заметок пока нет."}</p>
+      </article>
+
+      <Link className="page-link" to="/races">
+        Назад к календарю стартов
+      </Link>
+    </section>
+  );
+}

frontend/src/pages/RacesPage.tsx

@@ -1,8 +1,118 @@
-export function RacesPage(): JSX.Element {
+import { useEffect, useMemo, useState } from "react";
+import { Link } from "react-router-dom";
+import type { Race } from "../api";
+import { ApiError, getRaces } from "../api";
+import { formatDistance, formatRaceDate, getRaceStatusLabel, splitRacesByDate } from "../lib";
+
+function getErrorMessage(error: unknown): string {
+  if (error instanceof ApiError) {
+    return error.message;
+  }
+  return "Не удалось загрузить календарь стартов.";
+}
+
+function RaceList(props: { title: string; races: Race[] }): JSX.Element {
+  const { title, races } = props;
+
   return (
-    <section className="page page--races">
+    <section className="race-list" aria-label={title}>
-      <h1 className="page__title">Races</h1>
+      <h2 className="race-list__title">{title}</h2>
-      <p className="page__subtitle">Upcoming and completed race lists will be added in the next task.</p>
+      {races.length > 0 ? (
+        <ul className="race-list__items">
+          {races.map((race) => (
+            <li key={race.id} className="race-card">
+              <div className="race-card__main">
+                <p className="race-card__title">
+                  <Link className="race-card__link" to={`/races/${race.id}`}>
+                    {race.title}
+                  </Link>
+                </p>
+                <p className="race-card__meta">
+                  {formatRaceDate(race.date)} · {formatDistance(race.distanceKm)}
+                </p>
+              </div>
+              <span
+                className={
+                  race.status === "completed"
+                    ? "race-card__status race-card__status--completed"
+                    : "race-card__status race-card__status--planned"
+                }
+              >
+                {getRaceStatusLabel(race.status)}
+              </span>
+            </li>
+          ))}
+        </ul>
+      ) : (
+        <p className="race-list__empty">Пока нет данных в этом разделе.</p>
+      )}
+    </section>
+  );
+}
+
+export function RacesPage(): JSX.Element {
+  const [races, setRaces] = useState<Race[]>([]);
+  const [isLoading, setIsLoading] = useState<boolean>(true);
+  const [errorMessage, setErrorMessage] = useState<string | null>(null);
+
+  useEffect(() => {
+    let isMounted = true;
+
+    async function loadRaces(): Promise<void> {
+      try {
+        const items = await getRaces();
+        if (!isMounted) {
+          return;
+        }
+        setRaces(items);
+        setErrorMessage(null);
+      } catch (error) {
+        if (!isMounted) {
+          return;
+        }
+        setErrorMessage(getErrorMessage(error));
+      } finally {
+        if (isMounted) {
+          setIsLoading(false);
+        }
+      }
+    }
+
+    void loadRaces();
+    return () => {
+      isMounted = false;
+    };
+  }, []);
+
+  const { upcoming, past } = useMemo(() => splitRacesByDate(races), [races]);
+
+  if (isLoading) {
+    return (
+      <section className="page page--races" aria-busy="true">
+        <h1 className="page__title">Календарь стартов</h1>
+        <p className="page__subtitle">Загружаем данные...</p>
+      </section>
+    );
+  }
+
+  if (errorMessage) {
+    return (
+      <section className="page page--races" role="alert">
+        <h1 className="page__title">Календарь стартов</h1>
+        <p className="page__subtitle page__subtitle--error">{errorMessage}</p>
+      </section>
+    );
+  }
+
+  return (
+    <section className="page page--races">
+      <h1 className="page__title">Календарь стартов</h1>
+      <p className="page__subtitle">Будущие и прошедшие старты в одном месте.</p>
+
+      <div className="race-lists">
+        <RaceList title="Будущие" races={upcoming} />
+        <RaceList title="Прошедшие" races={past} />
+      </div>
     </section>
   );
 }

frontend/src/styles/global.css

@@ -91,3 +91,210 @@ a {
   margin: 0;
   color: var(--color-text-muted);
 }
+
+.page__subtitle--error {
+  color: var(--color-error);
+}
+
+.dashboard-grid {
+  margin-top: var(--space-6);
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: var(--space-4);
+}
+
+.dashboard-card {
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius-md);
+  padding: var(--space-5);
+  background: #fcfdff;
+}
+
+.dashboard-card__title {
+  margin: 0 0 var(--space-3);
+  font-size: var(--font-size-body);
+  color: var(--color-text-muted);
+}
+
+.dashboard-card__value {
+  margin: 0;
+  font-size: var(--font-size-h2);
+  font-weight: 700;
+  color: var(--color-text);
+}
+
+.dashboard-card__meta {
+  margin: var(--space-2) 0 0;
+  color: var(--color-text);
+}
+
+.dashboard-card__hint,
+.dashboard-card__empty {
+  margin: var(--space-2) 0 0;
+  color: var(--color-text-muted);
+  font-size: var(--font-size-caption);
+}
+
+.race-lists {
+  margin-top: var(--space-6);
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: var(--space-4);
+}
+
+.race-list {
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius-md);
+  padding: var(--space-5);
+  background: #fcfdff;
+}
+
+.race-list__title {
+  margin: 0 0 var(--space-4);
+  font-size: var(--font-size-h2);
+}
+
+.race-list__items {
+  margin: 0;
+  padding: 0;
+  list-style: none;
+  display: grid;
+  gap: var(--space-3);
+}
+
+.race-list__empty {
+  margin: 0;
+  color: var(--color-text-muted);
+}
+
+.race-card {
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius-sm);
+  padding: var(--space-3);
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: var(--space-3);
+  background: var(--color-surface);
+}
+
+.race-card__title {
+  margin: 0;
+  font-weight: 600;
+}
+
+.race-card__link:hover,
+.race-card__link:focus-visible {
+  text-decoration: underline;
+  outline: none;
+}
+
+.race-card__meta {
+  margin: var(--space-2) 0 0;
+  color: var(--color-text-muted);
+  font-size: var(--font-size-caption);
+}
+
+.race-card__status {
+  display: inline-flex;
+  align-items: center;
+  white-space: nowrap;
+  border-radius: 999px;
+  padding: 0.2rem 0.5rem;
+  font-size: var(--font-size-caption);
+  font-weight: 600;
+}
+
+.race-card__status--planned {
+  background: #edf3ff;
+  color: var(--color-accent);
+}
+
+.race-card__status--completed {
+  background: #ecf8f1;
+  color: var(--color-success);
+}
+
+.page-link {
+  margin-top: var(--space-4);
+  display: inline-flex;
+  color: var(--color-accent);
+  font-weight: 600;
+}
+
+.page-link:hover,
+.page-link:focus-visible {
+  text-decoration: underline;
+  outline: none;
+}
+
+.race-details-header {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: var(--space-4);
+}
+
+.race-details-grid {
+  margin-top: var(--space-6);
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: var(--space-4);
+}
+
+.race-details-card {
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius-md);
+  padding: var(--space-5);
+  background: #fcfdff;
+}
+
+.race-details-card--notes {
+  margin-top: var(--space-4);
+}
+
+.race-details-card__title {
+  margin: 0 0 var(--space-3);
+  font-size: var(--font-size-body);
+  color: var(--color-text-muted);
+}
+
+.race-details-card__empty,
+.race-details-card__notes {
+  margin: 0;
+  color: var(--color-text-muted);
+}
+
+.race-details-meta {
+  margin: 0;
+  display: grid;
+  gap: var(--space-3);
+}
+
+.race-details-meta__item {
+  display: grid;
+  gap: var(--space-1);
+}
+
+.race-details-meta__key {
+  color: var(--color-text-muted);
+  font-size: var(--font-size-caption);
+}
+
+.race-details-meta__value {
+  margin: 0;
+  font-weight: 600;
+  color: var(--color-text);
+}
+
+@media (max-width: 900px) {
+  .dashboard-grid,
+  .race-lists,
+  .race-details-grid {
+    grid-template-columns: 1fr;
+  }
+
+  .race-details-header {
+    flex-direction: column;
+  }
+}