321 lines
12 KiB
Dart
321 lines
12 KiB
Dart
import 'package:terepi_seged/models/sensor_chanel.dart';
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import 'package:terepi_seged/services/coord_converter_service.dart';
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/// SPS (Shell Processing Support) fájlok beolvasása — a SEG 1993-as
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/// "SPS Format for Land 3D Surveys" specifikációja szerint, fix
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/// oszlop-pozíciókkal (1-alapú, záró oszlop is beleértve).
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///
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/// Csak azt olvassuk ki, ami a csatorna-geometria ellenőrzéséhez kell:
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/// * R-fájl (Receiver "Point Record"): vonal, pontszám, EOV Y/X, magasság
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/// * X-fájl (Relation Record): csatorna-tartomány → vonal + állomás-tartomány
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///
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/// A fix oszlopszélességű, évtizedes szabvány gyártónként kicsit eltérő
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/// exportokat is szülhet — ezért import előtt MINDIG előnézet van
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/// (lásd SpsImportPreview), soha nem mentünk vakon.
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class SpsParser {
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SpsParser._();
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// ── Nyers sor-kivágás (1-alapú, záró oszlop is benne) ─────────────
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static String _col(String line, int from, int to) {
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if (line.length < from) return '';
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final end = line.length < to ? line.length : to;
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return line.substring(from - 1, end).trim();
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}
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static bool _isDataLine(String line, String expectedFirstChar) {
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if (line.isEmpty) return false;
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if (line.startsWith('EOF')) return false;
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if (line[0] == 'H') return false; // fejléc/komment sor
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return line[0].toUpperCase() == expectedFirstChar;
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}
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// ═════════════════════════════════════════════════════════════════
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// R-fájl (vevőpont) — "Point Record", cols 1-80
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// ═════════════════════════════════════════════════════════════════
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// 1 Rekord-azonosító 1-1 "R"
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// 2 Vonalnév 2-17
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// 3 Pontszám 18-25
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// 4 Pont-index 26-26
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// 11 EOV Y (easting) 47-55
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// 12 EOV X (northing) 56-65
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// 13 Magasság 66-71
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static List<SpsPointRecord> parseReceiverFile(String content) =>
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_parsePointFile(content, 'R');
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/// Forráspontok (vibrátor-állomások) — az S-fájl UGYANAZT az
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/// oszlop-elrendezést használja, mint az R-fájl, csak a rekord-jelölő
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/// betű más.
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static List<SpsPointRecord> parseSourceFile(String content) =>
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_parsePointFile(content, 'S');
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static List<SpsPointRecord> _parsePointFile(
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String content, String recordType) {
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final result = <SpsPointRecord>[];
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for (final raw in content.split(RegExp(r'\r\n|\r|\n'))) {
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if (!_isDataLine(raw, recordType)) continue;
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final lineId = _col(raw, 2, 17);
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final pointStr = _col(raw, 18, 25);
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final indexStr = _col(raw, 26, 26);
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final eastingStr = _col(raw, 47, 55);
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final northingStr = _col(raw, 56, 65);
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final elevStr = _col(raw, 66, 71);
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// A pontszám ritkán tartalmazhat törtrészt — az egész részt vesszük
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// állomásszámként.
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final pointNum =
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int.tryParse(pointStr.split('.').first.replaceAll(RegExp(r'\D'), ''));
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if (pointNum == null) continue;
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result.add(SpsPointRecord(
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lineId: lineId,
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station: pointNum,
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pointIndex: int.tryParse(indexStr) ?? 1,
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eovY: double.tryParse(eastingStr),
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eovX: double.tryParse(northingStr),
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elevation: double.tryParse(elevStr),
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rawLine: raw,
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));
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}
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return result;
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}
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// ═════════════════════════════════════════════════════════════════
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// X-fájl (kapcsolat) — "Relation Record", cols 1-80
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// ═════════════════════════════════════════════════════════════════
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// 9 From channel 39-42
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// 10 To channel 43-46
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// 11 Channel increment 47-47
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// 12 Vevő-vonalnév 48-63
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// 13 From receiver 64-71
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// 14 To receiver 72-79
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// 15 Receiver index 80-80
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static List<SpsRelationRecord> parseRelationFile(String content) {
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final result = <SpsRelationRecord>[];
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for (final raw in content.split(RegExp(r'\r\n|\r|\n'))) {
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if (!_isDataLine(raw, 'X')) continue;
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final fromCh = int.tryParse(_col(raw, 39, 42));
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final toCh = int.tryParse(_col(raw, 43, 46));
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final chInc = int.tryParse(_col(raw, 47, 47)) ?? 1;
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final recvLine = _col(raw, 48, 63);
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final fromRecv = int.tryParse(_col(raw, 64, 71));
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final toRecv = int.tryParse(_col(raw, 72, 79));
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if (fromCh == null ||
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toCh == null ||
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fromRecv == null ||
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toRecv == null) {
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continue;
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}
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result.add(SpsRelationRecord(
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fromChannel: fromCh,
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toChannel: toCh,
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channelIncrement: chInc <= 0 ? 1 : chInc,
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recvLineId: recvLine,
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fromReceiver: fromRecv,
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toReceiver: toRecv,
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rawLine: raw,
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));
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}
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return result;
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}
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/// Egy X-rekord (csatorna-TARTOMÁNY) egyedi (csatorna, vonal, állomás)
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/// hármasokra bontása. A normál (egykomponensű) esetben a csatorna- és
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/// vevőszám párhuzamosan fut végig a tartományon. Többkomponensű
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/// (channel increment > 1) esetet — ritka, pl. 3C geofonoknál — nem
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/// bontunk szét channelenként külön állomásra, mert az UGYANAHHOZ az
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/// egy fizikai ponthoz tartozna; ilyenkor a tartomány KEZDŐ csatornáját
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/// társítjuk a ponthoz, a többit átugorjuk.
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static List<({int channel, String lineId, int station})> expandRelation(
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SpsRelationRecord r) {
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final out = <({int channel, String lineId, int station})>[];
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if (r.channelIncrement != 1) {
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out.add((
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channel: r.fromChannel,
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lineId: r.recvLineId,
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station: r.fromReceiver
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));
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return out;
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}
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final chCount = r.toChannel - r.fromChannel;
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final recvCount = r.toReceiver - r.fromReceiver;
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if (chCount < 0) return out;
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for (var i = 0; i <= chCount; i++) {
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final station = chCount == 0
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? r.fromReceiver
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: r.fromReceiver + (recvCount * i / chCount).round();
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out.add(
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(channel: r.fromChannel + i, lineId: r.recvLineId, station: station));
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}
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return out;
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}
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// ═════════════════════════════════════════════════════════════════
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// Előnézet összeállítása — R + X összefésülve
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// ═════════════════════════════════════════════════════════════════
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/// [receiverPoints] és/vagy [relations] közül legalább az egyik legyen
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/// nem üres. Ha csak relations van, a csatorna-hozzárendelés megvan,
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/// de terv-koordináta nélkül (a GNSS-mért kitűzési pont adja majd a
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/// pozíciót). Ha csak receiverPoints van, nincs csatornaszám — ekkor
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/// channel = null marad minden sorban (a UI jelzi, hogy ez hiányos).
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static SpsImportPreview buildPreview({
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List<SpsPointRecord> receiverPoints = const [],
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List<SpsRelationRecord> relations = const [],
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}) {
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final byLineStation = <String, SpsPointRecord>{};
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for (final p in receiverPoints) {
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byLineStation['${p.lineId}|${p.station}'] = p;
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}
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final rows = <SpsPreviewRow>[];
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var unmatchedChannels = 0;
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if (relations.isNotEmpty) {
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for (final rel in relations) {
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for (final e in expandRelation(rel)) {
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final match = byLineStation['${e.lineId}|${e.station}'];
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if (match == null) unmatchedChannels++;
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rows.add(SpsPreviewRow(
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channel: e.channel,
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lineId: e.lineId,
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station: e.station,
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eovY: match?.eovY,
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eovX: match?.eovX,
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));
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}
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}
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} else {
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// Csak R-fájl: nincs csatornaszám, csak a vevőpontok listája.
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for (final p in receiverPoints) {
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rows.add(SpsPreviewRow(
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channel: null,
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lineId: p.lineId,
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station: p.station,
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eovY: p.eovY,
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eovX: p.eovX,
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));
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}
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}
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rows.sort(
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(a, b) => (a.channel ?? a.station).compareTo(b.channel ?? b.station));
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return SpsImportPreview(
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rows: rows,
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totalReceiverPoints: receiverPoints.length,
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totalRelations: relations.length,
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unmatchedChannelCount: unmatchedChannels,
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);
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}
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/// A jóváhagyott előnézetből SensorChannel lista építése (mentés előtt).
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static List<SensorChannel> buildSensorChannels({
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required SpsImportPreview preview,
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required int projectId,
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required String importBatch,
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}) {
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final conv = CoordConverterService.to;
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final out = <SensorChannel>[];
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for (final r in preview.rows) {
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if (r.channel == null) continue; // csatornaszám nélkül nincs mit menteni
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double? lat, lon;
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if (r.eovY != null && r.eovX != null) {
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final w = conv.eovToWgsPoint(r.eovY!, r.eovX!);
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lon = w.x;
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lat = w.y;
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}
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out.add(SensorChannel(
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projectId: projectId,
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channel: r.channel!,
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lineId: r.lineId,
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station: r.station,
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planEovY: r.eovY,
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planEovX: r.eovX,
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planLat: lat,
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planLon: lon,
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source: 'sps',
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importBatch: importBatch,
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));
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}
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return out;
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}
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}
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// ═════════════════════════════════════════════════════════════════════
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// Adatszerkezetek
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// ═════════════════════════════════════════════════════════════════════
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class SpsPointRecord {
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final String lineId;
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final int station;
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final int pointIndex;
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final double? eovY;
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final double? eovX;
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final double? elevation;
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final String rawLine;
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SpsPointRecord({
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required this.lineId,
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required this.station,
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required this.pointIndex,
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this.eovY,
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this.eovX,
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this.elevation,
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required this.rawLine,
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});
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}
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class SpsRelationRecord {
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final int fromChannel;
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final int toChannel;
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final int channelIncrement;
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final String recvLineId;
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final int fromReceiver;
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final int toReceiver;
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final String rawLine;
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SpsRelationRecord({
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required this.fromChannel,
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required this.toChannel,
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required this.channelIncrement,
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required this.recvLineId,
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required this.fromReceiver,
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required this.toReceiver,
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required this.rawLine,
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});
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}
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/// Egy előnézeti sor — ez jelenik meg a felhasználónak import előtt.
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class SpsPreviewRow {
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final int? channel;
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final String lineId;
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final int station;
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final double? eovY;
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final double? eovX;
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SpsPreviewRow({
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required this.channel,
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required this.lineId,
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required this.station,
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this.eovY,
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this.eovX,
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});
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bool get hasPosition => eovY != null && eovX != null;
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}
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class SpsImportPreview {
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final List<SpsPreviewRow> rows;
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final int totalReceiverPoints;
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final int totalRelations;
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final int unmatchedChannelCount;
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SpsImportPreview({
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required this.rows,
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required this.totalReceiverPoints,
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required this.totalRelations,
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required this.unmatchedChannelCount,
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});
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}
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