207 lines
7.5 KiB
TypeScript
207 lines
7.5 KiB
TypeScript
import { GroupId, Match, MatchStatus, Team } from "./types";
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// ----------------------------------------------------------------------------
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// Caching: einfacher In-Memory-Cache mit TTL. Verhindert, dass jede Browser-
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// Anfrage einen Upstream-Call auslöst (football-data: 10 req/min Limit).
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// ----------------------------------------------------------------------------
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interface CacheEntry<T> { value: T; expires: number; }
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const cache = new Map<string, CacheEntry<unknown>>();
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export async function cached<T>(key: string, ttlMs: number, fn: () => Promise<T>): Promise<T> {
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const hit = cache.get(key) as CacheEntry<T> | undefined;
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const now = Date.now();
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if (hit && hit.expires > now) return hit.value;
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try {
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const value = await fn();
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cache.set(key, { value, expires: now + ttlMs });
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return value;
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} catch (err) {
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// Bei Upstream-Fehler abgelaufenen Cache weiterverwenden, statt hart zu failen.
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if (hit) return hit.value;
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throw err;
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}
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}
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// ----------------------------------------------------------------------------
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// football-data.org: Teams, Spiele, Status
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// ----------------------------------------------------------------------------
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const FD_BASE = "https://api.football-data.org/v4";
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const FD_COMP = "WC"; // FIFA World Cup
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function fdHeaders(): Record<string, string> {
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const token = process.env.FOOTBALL_DATA_TOKEN;
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return token ? { "X-Auth-Token": token } : {};
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}
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function mapStatus(s: string): MatchStatus {
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switch (s) {
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case "LIVE": return "LIVE";
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case "IN_PLAY": return "IN_PLAY";
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case "PAUSED": return "PAUSED";
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case "FINISHED": return "FINISHED";
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default: return "SCHEDULED";
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}
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}
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// Wandelt einen football-data-Gruppennamen ("GROUP_A") in unsere GroupId.
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function parseGroup(g: string | null | undefined): GroupId | null {
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if (!g) return null;
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const m = /GROUP_([A-L])/.exec(g);
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return m ? (m[1] as GroupId) : null;
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}
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interface FdMatchesResponse {
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matches: Array<{
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id: number;
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utcDate: string;
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status: string;
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minute?: number | null;
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matchday?: number | null;
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stage: string;
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group?: string | null;
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venue?: string | null;
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attendance?: number | null;
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homeTeam: { id: number | null; name: string | null; tla?: string | null; crest?: string | null };
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awayTeam: { id: number | null; name: string | null; tla?: string | null; crest?: string | null };
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score: { fullTime: { home: number | null; away: number | null } };
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}>;
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}
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function stageFor(stage: string, group: GroupId | null): Match["stage"] {
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if (group) return "GROUP";
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switch (stage) {
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case "LAST_32": return "R32";
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case "LAST_16": return "R16";
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case "QUARTER_FINALS": return "QF";
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case "SEMI_FINALS": return "SF";
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case "THIRD_PLACE": return "3RD";
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case "FINAL": return "FINAL";
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default: return "GROUP";
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}
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}
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// Holt alle Spiele + leitet die Teamliste daraus ab (spart einen Extra-Call).
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export async function fetchMatchesAndTeams(): Promise<{ matches: Match[]; teams: Team[] }> {
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return cached("fd:matches", 60_000, async () => {
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const res = await fetch(`${FD_BASE}/competitions/${FD_COMP}/matches`, {
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headers: fdHeaders(),
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// Next.js: kein eigenes Caching, wir cachen selbst
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cache: "no-store",
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});
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if (!res.ok) throw new Error(`football-data ${res.status}`);
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const data = (await res.json()) as FdMatchesResponse;
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const teamMap = new Map<string, Team>();
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const matches: Match[] = data.matches.map((m) => {
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const group = parseGroup(m.group);
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// Teams registrieren (nur wenn Gruppenspiel und ID vorhanden)
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for (const side of [m.homeTeam, m.awayTeam]) {
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if (side.id != null && side.name && group) {
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const id = String(side.id);
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if (!teamMap.has(id)) {
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teamMap.set(id, {
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id, name: side.name, code: side.tla ?? "", group,
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crest: side.crest ?? null,
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});
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}
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}
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}
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return {
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id: String(m.id),
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group,
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stage: stageFor(m.stage, group),
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matchNumber: m.matchday ?? 0,
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utcDate: m.utcDate,
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status: mapStatus(m.status),
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minute: m.minute ?? null,
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homeTeamId: m.homeTeam.id != null ? String(m.homeTeam.id) : null,
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awayTeamId: m.awayTeam.id != null ? String(m.awayTeam.id) : null,
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homeScore: m.score.fullTime.home,
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awayScore: m.score.fullTime.away,
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venue: m.venue ?? null,
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attendance: m.attendance ?? null,
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};
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});
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return { matches, teams: [...teamMap.values()] };
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});
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}
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// ----------------------------------------------------------------------------
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// Polymarket Gamma API: Wahrscheinlichkeiten pro Spiel
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// ----------------------------------------------------------------------------
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const PM_BASE = "https://gamma-api.polymarket.com";
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interface PmMarket {
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question: string;
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outcomes: string; // JSON-String, z.B. "[\"Germany\",\"Draw\",\"Mexico\"]"
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outcomePrices: string; // JSON-String, z.B. "[\"0.55\",\"0.25\",\"0.20\"]"
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slug: string;
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closed: boolean;
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}
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// Map: normalisierter Teamname-Schlüssel -> Wahrscheinlichkeit.
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export interface OddsEntry {
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outcomes: string[];
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prices: number[];
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question: string;
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}
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function safeParse<T>(s: string, fallback: T): T {
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try { return JSON.parse(s) as T; } catch { return fallback; }
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}
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// Holt WM-bezogene Märkte über das Tag/Slug der Polymarket-WM-Kollektion.
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// Hinweis: Der exakte Slug kann sich ändern; per ENV überschreibbar.
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export async function fetchOdds(): Promise<OddsEntry[]> {
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const slug = process.env.POLYMARKET_WC_SLUG || "world-cup-2026";
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return cached("pm:odds", 120_000, async () => {
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const res = await fetch(
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`${PM_BASE}/events?slug=${encodeURIComponent(slug)}`,
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{ cache: "no-store", headers: { "User-Agent": "wm2026-board/1.0" } },
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);
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if (!res.ok) throw new Error(`polymarket ${res.status}`);
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const events = (await res.json()) as Array<{ markets?: PmMarket[] }>;
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const entries: OddsEntry[] = [];
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for (const ev of events) {
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for (const mk of ev.markets ?? []) {
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if (mk.closed) continue;
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const outcomes = safeParse<string[]>(mk.outcomes, []);
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const prices = safeParse<string[]>(mk.outcomePrices, []).map(Number);
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if (outcomes.length && outcomes.length === prices.length) {
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entries.push({ outcomes, prices, question: mk.question });
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}
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}
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}
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return entries;
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});
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}
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// Verknüpft Polymarket-Märkte mit Spielen anhand der Teamnamen im Markttitel.
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export function attachOdds(matches: Match[], teams: Team[], odds: OddsEntry[]): Match[] {
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const nameById = new Map(teams.map((t) => [t.id, t.name.toLowerCase()]));
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return matches.map((m) => {
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if (!m.homeTeamId || !m.awayTeamId) return m;
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const hn = nameById.get(m.homeTeamId);
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const an = nameById.get(m.awayTeamId);
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if (!hn || !an) return m;
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const hit = odds.find(
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(o) => o.question.toLowerCase().includes(hn) && o.question.toLowerCase().includes(an),
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);
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if (!hit) return m;
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// Heuristik: 3 Outcomes = Heim/Unentschieden/Auswärts; 2 = Heim/Auswärts.
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const idxHome = hit.outcomes.findIndex((o) => o.toLowerCase().includes(hn));
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const idxAway = hit.outcomes.findIndex((o) => o.toLowerCase().includes(an));
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const idxDraw = hit.outcomes.findIndex((o) => /draw|unentschieden|tie/i.test(o));
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if (idxHome < 0 || idxAway < 0) return m;
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return {
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...m,
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prob: {
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home: hit.prices[idxHome] ?? 0,
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draw: idxDraw >= 0 ? (hit.prices[idxDraw] ?? null) : null,
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away: hit.prices[idxAway] ?? 0,
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},
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};
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});
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}
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