Initial commit: X-Plane G1000 web cockpit + bridge + Tauri desktop app

- server/: Node bridge (datarefs/commands, navdata, CIFP procedures, flight plan) - web/: React cockpit (PFD/MFD/Map, VFR six-pack, AFCS, FMS CDU), PWA, collapsible sidebar - desktop/: Tauri 2 launcher (Bun sidecar, system tray, updater) + Linux build via Docker - scripts/: prep-desktop, build-linux, Gitea release + latest.json Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-01 15:07:03 +02:00
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+// Parses X-Plane's CIFP procedure data (SIDs / STARs / approaches) on demand —
+// one small file per airport in Resources/default data/CIFP/<ICAO>.dat, in the
+// ARINC-424-derived "XP CIFP" format. Fix idents are resolved to coordinates
+// via the shared navdata index; runway thresholds come from the RWY records.
+//
+// Used by the G1000 PROC page: list a destination's procedures, then load a
+// chosen procedure+transition's leg fixes into the active flight plan.
+
+import fs from 'node:fs';
+import path from 'node:path';
+import { lookup, xplaneRoot } from './navdata.js';
+
+// "N47274972" -> 47.4638..  /  "W122183954" -> -122.3109..
+function parseCoord(s) {
+  if (!s || s.length < 8) return null;
+  const hemi = s[0];
+  const neg = hemi === 'S' || hemi === 'W';
+  const digits = s.slice(1);
+  // lat = DDMMSSss (8) ; lon = DDDMMSSss (9)
+  const degLen = (hemi === 'E' || hemi === 'W') ? 3 : 2;
+  const dd = parseInt(digits.slice(0, degLen), 10);
+  const mm = parseInt(digits.slice(degLen, degLen + 2), 10);
+  const ss = parseInt(digits.slice(degLen + 2, degLen + 4), 10);
+  const hh = parseInt(digits.slice(degLen + 4, degLen + 6) || '0', 10);
+  if (!isFinite(dd) || !isFinite(mm)) return null;
+  const val = dd + mm / 60 + (ss + hh / 100) / 3600;
+  return neg ? -val : val;
+}
+
+function cifpFile(icao) {
+  const root = xplaneRoot();
+  if (!root) return null;
+  const f = path.join(root, 'Resources', 'default data', 'CIFP', `${icao.toUpperCase()}.dat`);
+  return fs.existsSync(f) ? f : null;
+}
+
+// Parse one airport's procedures into a structured summary + leg store.
+// Returns null if the airport has no CIFP file.
+export function parseProcedures(icao) {
+  const file = cifpFile(icao);
+  if (!file) return null;
+
+  const runways = {};                 // RW16C -> { lat, lon, elev }
+  const groups = { SID: {}, STAR: {}, APPCH: {} };
+  // groups[type][procName] = { order:[trans...], legs:{ trans:[{fix,term,alt}] } }
+
+  const ensure = (type, name, trans) => {
+    const g = groups[type];
+    if (!g[name]) g[name] = { order: [], legs: {} };
+    if (!(trans in g[name].legs)) { g[name].legs[trans] = []; g[name].order.push(trans); }
+    return g[name].legs[trans];
+  };
+
+  for (const raw of fs.readFileSync(file, 'utf8').split('\n')) {
+    const line = raw.trim().replace(/;$/, '');
+    if (!line) continue;
+    const colon = line.indexOf(':');
+    if (colon < 0) continue;
+    const type = line.slice(0, colon);
+    const f = line.slice(colon + 1).split(',');
+
+    if (type === 'RWY') {
+      // RWY:RW16C, , ,00429, ,ISZI,3, ;N47274972,W122183954,0000
+      const id = f[0];
+      const tail = line.split(';')[1] || '';      // "N47274972,W122183954,0000"
+      const [latS, lonS] = tail.split(',');
+      const lat = parseCoord(latS), lon = parseCoord(lonS);
+      if (lat != null && lon != null) runways[id] = { lat, lon, elev: parseInt(f[3], 10) || 0 };
+      continue;
+    }
+    if (type !== 'SID' && type !== 'STAR' && type !== 'APPCH') continue;
+
+    // f[0]=seqno, f[1]=route type, f[2]=proc, f[3]=transition, f[4]=fix,
+    // f[11]=path/termination, f[22]=alt flag (+/-), f[23]=altitude.
+    const procName = f[2];               // BANGR9 / CHINS5 / I16C
+    const trans = (f[3] || '').trim();   // RW16C / PDT / ERYKA / '' (common)
+    const fix = (f[4] || '').trim();     // OTLIE / ANVIL / RW16C
+    const term = (f[11] || '').trim();   // path/termination: IF TF CF DF VA CA ...
+    const altFlag = (f[22] || '').trim();
+    const altVal = parseInt((f[23] || '').trim(), 10);
+    const alt = isFinite(altVal) && altVal > 0 ? altVal : null;
+
+    const legs = ensure(type, procName, trans || '(common)');
+    legs.push({ fix, term, alt, altFlag });
+  }
+
+  // Build the client-facing summary (names + their transitions).
+  const summarize = (g) => Object.entries(g).map(([name, v]) => ({
+    name, transitions: v.order.filter((t) => t !== '(common)'),
+  }));
+
+  return {
+    icao: icao.toUpperCase(),
+    runways: Object.keys(runways),
+    sids: summarize(groups.SID),
+    stars: summarize(groups.STAR),
+    approaches: summarize(groups.APPCH),
+    _groups: groups,
+    _rwy: runways,
+  };
+}
+
+// Resolve a chosen procedure+transition to a list of waypoints with coordinates.
+// type: 'sid' | 'star' | 'approach'. Fixes are resolved via the navdata index;
+// runway "fixes" (RWxx) and unresolved fixes fall back to the RWY threshold.
+export function procedureLegs(icao, type, name, trans) {
+  const parsed = parseProcedures(icao);
+  if (!parsed) return [];
+  const TYPE = { sid: 'SID', star: 'STAR', approach: 'APPCH' }[String(type).toLowerCase()];
+  const g = parsed._groups[TYPE];
+  if (!g || !g[name]) return [];
+  const node = g[name];
+
+  // Compose the leg list: chosen transition first, then the common segment.
+  // (SID: runway/enroute transition then common climb-out; STAR: enroute entry
+  // then common arrival; approach: IAF transition then final-approach segment.)
+  const seq = [];
+  const wantTrans = trans && node.legs[trans] ? trans : node.order.find((t) => t !== '(common)');
+  if (wantTrans && node.legs[wantTrans]) seq.push(...node.legs[wantTrans]);
+  if (node.legs['(common)']) seq.push(...node.legs['(common)']);
+
+  const out = [];
+  const seen = new Set();
+  for (const leg of seq) {
+    if (!leg.fix) continue;                          // heading/altitude legs w/o a fix
+    if (seen.has(leg.fix)) continue;                 // de-dupe repeated fixes
+    let pt = null;
+    const isRwy = /^RW/.test(leg.fix);
+    if (isRwy && parsed._rwy[leg.fix]) pt = parsed._rwy[leg.fix];
+    else {
+      const hit = lookup(leg.fix);
+      if (hit) pt = { lat: hit.lat, lon: hit.lon };
+    }
+    if (!pt) continue;                               // unresolved fix → skip
+    seen.add(leg.fix);
+    out.push({ id: leg.fix, lat: pt.lat, lon: pt.lon, type: isRwy ? 'APT' : 'WPT', alt: leg.alt });
+    // An approach ends at the runway threshold — drop the missed-approach legs.
+    if (TYPE === 'APPCH' && isRwy) break;
+  }
+  return out;
+}