6c55de9d65
Android emulator has its own network stack — localhost refers to the emulator, not the host. Use 10.0.2.2 (host loopback alias) on Android. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
102 lines
2.8 KiB
TypeScript
102 lines
2.8 KiB
TypeScript
import { Platform } from "react-native";
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import * as SecureStore from "expo-secure-store";
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import { API_VERSION } from "@trails-cool/api";
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const STORE_KEY_SERVER_URL = "server_url";
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const DEV_HOST = Platform.OS === "android" ? "10.0.2.2" : "localhost";
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const DEFAULT_SERVER_URL = __DEV__ ? `http://${DEV_HOST}:3000` : "https://trails.cool";
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export interface DiscoveryResponse {
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apiVersion: string;
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instanceName: string;
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apiBaseUrl: string;
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tileUrl?: string;
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}
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/**
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* Get the stored server URL, or the default.
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*/
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export async function getServerUrl(): Promise<string> {
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const stored = await SecureStore.getItemAsync(STORE_KEY_SERVER_URL);
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return stored ?? DEFAULT_SERVER_URL;
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}
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/**
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* Store a new server URL.
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*/
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export async function setServerUrl(url: string): Promise<void> {
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await SecureStore.setItemAsync(STORE_KEY_SERVER_URL, url);
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}
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/**
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* Clear the stored server URL (resets to default).
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*/
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export async function clearServerUrl(): Promise<void> {
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await SecureStore.deleteItemAsync(STORE_KEY_SERVER_URL);
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}
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/**
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* Fetch and validate the discovery endpoint for a server URL.
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* Returns the parsed discovery response or throws.
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*/
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export async function fetchDiscovery(serverUrl: string): Promise<DiscoveryResponse> {
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const url = `${serverUrl.replace(/\/+$/, "")}/.well-known/trails-cool`;
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console.log("[Discovery] Fetching:", url);
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let resp: Response;
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try {
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const controller = new AbortController();
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const timer = setTimeout(() => controller.abort(), 10_000);
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resp = await fetch(url, {
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headers: { Accept: "application/json" },
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signal: controller.signal,
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});
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clearTimeout(timer);
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} catch (err) {
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console.error("[Discovery] Fetch failed:", err);
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throw new ServerConfigError("network_error", (err as Error).message);
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}
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console.log("[Discovery] Response status:", resp.status);
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if (!resp.ok) {
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throw new ServerConfigError(
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"discovery_failed",
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`Server returned ${resp.status}`,
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);
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}
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const data = await resp.json();
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if (!data.apiVersion || !data.instanceName || !data.apiBaseUrl) {
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throw new ServerConfigError(
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"invalid_discovery",
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"Server returned an invalid discovery response",
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);
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}
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return data as DiscoveryResponse;
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}
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/**
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* Parse the major version number from a semver string.
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*/
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function majorVersion(semver: string): number {
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const match = semver.match(/^(\d+)/);
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return match ? Number(match[1]) : 0;
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}
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/**
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* Check if the server's API version is compatible with this app.
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* Compares major versions — the server must match the app's major version.
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*/
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export function isApiVersionCompatible(serverVersion: string): boolean {
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return majorVersion(serverVersion) === majorVersion(API_VERSION);
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}
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export class ServerConfigError extends Error {
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constructor(
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public code: string,
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message: string,
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) {
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super(message);
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}
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}
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