| function readEnvNumber(key: string, fallback: number): number { | |
| const raw = import.meta.env[key]; | |
| if (raw === undefined || raw === "") return fallback; | |
| const parsed = Number(raw); | |
| return Number.isFinite(parsed) ? parsed : fallback; | |
| } | |
| function readEnvString(key: string, fallback: string): string { | |
| const raw = import.meta.env[key]; | |
| return raw === undefined || raw === "" ? fallback : raw; | |
| } | |
| // Room-scale defaults (a 4m x 3m living room -- see roomLayout.ts, which | |
| // derives its own wall placement from these same two numbers so the two | |
| // modules can't drift apart). Tiles cleanly into 1m floor/wall segments. | |
| export const FLY_AREA_CONFIG = { | |
| count: readEnvNumber("VITE_FLY_COUNT", 12), | |
| widthMm: readEnvNumber("VITE_FLY_AREA_WIDTH_MM", 4000), | |
| depthMm: readEnvNumber("VITE_FLY_AREA_DEPTH_MM", 3000), | |
| heightMm: readEnvNumber("VITE_FLY_AREA_HEIGHT_MM", 0), | |
| }; | |
| // flyyt-backend (VDA5050 fly-fleet simulator) connectivity. Same-origin | |
| // defaults so "npm run build" served by the backend container (see | |
| // flyyt/backend/src/flyyt_backend/main.py) works with zero config; override | |
| // for local dev when the backend/NATS run on different hosts/ports. | |
| export const BACKEND_CONFIG = { | |
| apiUrl: readEnvString("VITE_FLYYT_API_URL", ""), | |
| natsWsUrl: readEnvString("VITE_NATS_WS_URL", "ws://localhost:8080"), | |
| }; | |
| /** | |
| * Builds a same-origin API URL. Deliberately NOT `/${path}` when apiUrl is | |
| * unset -- this app can be served behind an arbitrary path prefix (e.g. | |
| * /cell/flyyt/ on a Nova instance), and a root-absolute fetch path ignores | |
| * that prefix entirely (hits http://host/roster instead of | |
| * http://host/cell/flyyt/roster). A plain relative path resolves against | |
| * the page's <base href> instead (injected server-side to match BASE_PATH | |
| * -- see main.py's index.html serving), which is prefix-correct wherever | |
| * this is deployed, including plain root-path local dev (no <base>, so it | |
| * just resolves against "/"). | |
| */ | |
| export function apiPath(path: string): string { | |
| return BACKEND_CONFIG.apiUrl ? `${BACKEND_CONFIG.apiUrl}/${path}` : path; | |
| } | |