Phase 6.4 Stream A + B data layer — UnsImpactAnalyzer + EquipmentCsvImporter (parser)
Ships the pure-logic data layer of Phase 6.4. Blazor UI pieces (UnsTab drag/drop, CSV import modal, preview table, FinaliseImportBatch txn, staging tables) are deferred to visual-compliance follow-ups (tasks #153, #155, #157). Admin.Services additions: - UnsImpactAnalyzer.Analyze(snapshot, move) — pure-function, no I/O. Three move variants: LineMove, AreaRename, LineMerge. Returns UnsImpactPreview with AffectedEquipmentCount + AffectedTagCount + CascadeWarnings + RevisionToken + HumanReadableSummary the Admin UI shows in the confirm modal. Cross-cluster moves rejected with CrossClusterMoveRejectedException per decision #82. Missing source/target throws UnsMoveValidationException. Surfaces sibling-line same-name ambiguity as a cascade warning. - DraftRevisionToken — opaque revision fingerprint. Preview captures the token; Confirm compares it. The 409-concurrent-edit UX plumbs through on the Razor-page follow-up (task #153). Matches(other) is null-safe. - UnsTreeSnapshot + UnsAreaSummary + UnsLineSummary — snapshot shape the caller hands to the analyzer. Tests build them in-memory without a DB. - EquipmentCsvImporter.Parse(csvText) — RFC 4180 CSV parser per decision #95. Version-marker contract: line 1 must be "# OtOpcUaCsv v1" (future shapes bump the version). Required columns from decision #117 + optional columns from decision #139. Rejects unknown columns, duplicate column names, blank required fields, duplicate ZTags within the file. Quoted-field handling supports embedded commas + escaped "" quotes. Returns EquipmentCsvParseResult { AcceptedRows, RejectedRows } so the preview modal renders accept/reject counts without re-parsing. Tests (22 new, all pass): - UnsImpactAnalyzerTests (9): line move counts equipment + tags; cross- cluster throws; unknown source/target throws validation; ambiguous same- name target raises warning; area rename sums across lines; line merge cross-area warns; same-area merge no warning; DraftRevisionToken matches semantics. - EquipmentCsvImporterTests (13): empty file throws; missing version marker; missing required column; unknown column; duplicate column; valid single row round-trips; optional columns populate when present; blank required field rejects row; duplicate ZTag rejects second; RFC 4180 quoted fields with commas + escaped quotes; mismatched column count rejects; blank lines between rows ignored; required + optional column constants match decisions #117 + #139 exactly. Full solution dotnet test: 1159 passing (Phase 6.3 = 1137, Phase 6.4 A+B data = +22). Pre-existing Client.CLI Subscribe flake unchanged. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Joseph Doherty
259
src/ZB.MOM.WW.OtOpcUa.Admin/Services/EquipmentCsvImporter.cs
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259
src/ZB.MOM.WW.OtOpcUa.Admin/Services/EquipmentCsvImporter.cs
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@@ -0,0 +1,259 @@
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using System.Globalization;
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using System.Text;
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namespace ZB.MOM.WW.OtOpcUa.Admin.Services;
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/// <summary>
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/// RFC 4180 CSV parser for equipment import per decision #95 and Phase 6.4 Stream B.1.
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/// Produces a validated <see cref="EquipmentCsvParseResult"/> the caller (CSV import
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/// modal + staging tables) consumes. Pure-parser concern — no DB access, no staging
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/// writes; those live in the follow-up Stream B.2 work.
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/// </summary>
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/// <remarks>
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/// <para><b>Header contract</b>: line 1 must be exactly <c># OtOpcUaCsv v1</c> (version
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/// marker). Line 2 is the column header row. Unknown columns are rejected; required
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/// columns must all be present. The version bump handshake lets future shapes parse
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/// without ambiguity — v2 files go through a different parser variant.</para>
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///
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/// <para><b>Required columns</b> per decision #117: ZTag, MachineCode, SAPID,
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/// EquipmentId, EquipmentUuid, Name, UnsAreaName, UnsLineName.</para>
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///
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/// <para><b>Optional columns</b> per decision #139: Manufacturer, Model, SerialNumber,
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/// HardwareRevision, SoftwareRevision, YearOfConstruction, AssetLocation,
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/// ManufacturerUri, DeviceManualUri.</para>
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///
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/// <para><b>Row validation</b>: blank required field → rejected; duplicate ZTag within
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/// the same file → rejected. Duplicate against the DB isn't detected here — the
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/// staged-import finalize step (Stream B.4) catches that.</para>
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/// </remarks>
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public static class EquipmentCsvImporter
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{
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public const string VersionMarker = "# OtOpcUaCsv v1";
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public static IReadOnlyList<string> RequiredColumns { get; } = new[]
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{
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"ZTag", "MachineCode", "SAPID", "EquipmentId", "EquipmentUuid",
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"Name", "UnsAreaName", "UnsLineName",
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};
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public static IReadOnlyList<string> OptionalColumns { get; } = new[]
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{
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"Manufacturer", "Model", "SerialNumber", "HardwareRevision", "SoftwareRevision",
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"YearOfConstruction", "AssetLocation", "ManufacturerUri", "DeviceManualUri",
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};
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public static EquipmentCsvParseResult Parse(string csvText)
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{
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ArgumentNullException.ThrowIfNull(csvText);
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var rows = SplitLines(csvText);
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if (rows.Count == 0)
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throw new InvalidCsvFormatException("CSV is empty.");
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if (!string.Equals(rows[0].Trim(), VersionMarker, StringComparison.Ordinal))
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throw new InvalidCsvFormatException(
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$"CSV header line 1 must be exactly '{VersionMarker}' — got '{rows[0]}'. " +
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"Files without the version marker are rejected so future-format files don't parse ambiguously.");
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if (rows.Count < 2)
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throw new InvalidCsvFormatException("CSV has no column header row (line 2) or data rows.");
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var headerCells = SplitCsvRow(rows[1]);
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ValidateHeader(headerCells);
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var accepted = new List<EquipmentCsvRow>();
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var rejected = new List<EquipmentCsvRowError>();
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var ztagsSeen = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
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var colIndex = headerCells
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.Select((name, idx) => (name, idx))
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.ToDictionary(t => t.name, t => t.idx, StringComparer.OrdinalIgnoreCase);
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for (var i = 2; i < rows.Count; i++)
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{
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if (string.IsNullOrWhiteSpace(rows[i])) continue;
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try
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{
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var cells = SplitCsvRow(rows[i]);
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if (cells.Length != headerCells.Length)
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{
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rejected.Add(new EquipmentCsvRowError(
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LineNumber: i + 1,
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Reason: $"Column count {cells.Length} != header count {headerCells.Length}."));
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continue;
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}
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var row = BuildRow(cells, colIndex);
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var missing = RequiredColumns.Where(c => string.IsNullOrWhiteSpace(GetCell(row, c))).ToList();
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if (missing.Count > 0)
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{
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rejected.Add(new EquipmentCsvRowError(i + 1, $"Blank required column(s): {string.Join(", ", missing)}"));
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continue;
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}
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if (!ztagsSeen.Add(row.ZTag))
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{
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rejected.Add(new EquipmentCsvRowError(i + 1, $"Duplicate ZTag '{row.ZTag}' within file."));
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continue;
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}
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accepted.Add(row);
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}
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catch (InvalidCsvFormatException ex)
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{
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rejected.Add(new EquipmentCsvRowError(i + 1, ex.Message));
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}
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}
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return new EquipmentCsvParseResult(accepted, rejected);
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}
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private static void ValidateHeader(string[] headerCells)
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{
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var seen = new HashSet<string>(headerCells, StringComparer.OrdinalIgnoreCase);
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// Missing required
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var missingRequired = RequiredColumns.Where(r => !seen.Contains(r)).ToList();
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if (missingRequired.Count > 0)
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throw new InvalidCsvFormatException($"Header is missing required column(s): {string.Join(", ", missingRequired)}");
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// Unknown columns (not in required ∪ optional)
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var known = new HashSet<string>(RequiredColumns.Concat(OptionalColumns), StringComparer.OrdinalIgnoreCase);
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var unknown = headerCells.Where(c => !known.Contains(c)).ToList();
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if (unknown.Count > 0)
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throw new InvalidCsvFormatException(
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$"Header has unknown column(s): {string.Join(", ", unknown)}. " +
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"Bump the version marker to define a new shape before adding columns.");
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// Duplicates
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var dupe = headerCells.GroupBy(c => c, StringComparer.OrdinalIgnoreCase).FirstOrDefault(g => g.Count() > 1);
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if (dupe is not null)
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throw new InvalidCsvFormatException($"Header has duplicate column '{dupe.Key}'.");
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}
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private static EquipmentCsvRow BuildRow(string[] cells, Dictionary<string, int> colIndex) => new()
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{
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ZTag = cells[colIndex["ZTag"]],
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MachineCode = cells[colIndex["MachineCode"]],
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SAPID = cells[colIndex["SAPID"]],
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EquipmentId = cells[colIndex["EquipmentId"]],
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EquipmentUuid = cells[colIndex["EquipmentUuid"]],
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Name = cells[colIndex["Name"]],
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UnsAreaName = cells[colIndex["UnsAreaName"]],
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UnsLineName = cells[colIndex["UnsLineName"]],
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Manufacturer = colIndex.TryGetValue("Manufacturer", out var mi) ? cells[mi] : null,
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Model = colIndex.TryGetValue("Model", out var moi) ? cells[moi] : null,
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SerialNumber = colIndex.TryGetValue("SerialNumber", out var si) ? cells[si] : null,
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HardwareRevision = colIndex.TryGetValue("HardwareRevision", out var hi) ? cells[hi] : null,
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SoftwareRevision = colIndex.TryGetValue("SoftwareRevision", out var swi) ? cells[swi] : null,
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YearOfConstruction = colIndex.TryGetValue("YearOfConstruction", out var yi) ? cells[yi] : null,
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AssetLocation = colIndex.TryGetValue("AssetLocation", out var ai) ? cells[ai] : null,
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ManufacturerUri = colIndex.TryGetValue("ManufacturerUri", out var mui) ? cells[mui] : null,
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DeviceManualUri = colIndex.TryGetValue("DeviceManualUri", out var dui) ? cells[dui] : null,
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};
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private static string GetCell(EquipmentCsvRow row, string colName) => colName switch
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{
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"ZTag" => row.ZTag,
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"MachineCode" => row.MachineCode,
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"SAPID" => row.SAPID,
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"EquipmentId" => row.EquipmentId,
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"EquipmentUuid" => row.EquipmentUuid,
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"Name" => row.Name,
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"UnsAreaName" => row.UnsAreaName,
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"UnsLineName" => row.UnsLineName,
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_ => string.Empty,
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};
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/// <summary>Split the raw text on line boundaries. Handles \r\n + \n + \r.</summary>
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private static List<string> SplitLines(string csv) =>
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csv.Split(["\r\n", "\n", "\r"], StringSplitOptions.None).ToList();
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/// <summary>Split one CSV row with RFC 4180 quoted-field handling.</summary>
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private static string[] SplitCsvRow(string row)
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{
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var cells = new List<string>();
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var sb = new StringBuilder();
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var inQuotes = false;
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for (var i = 0; i < row.Length; i++)
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{
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var ch = row[i];
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if (inQuotes)
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{
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if (ch == '"')
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{
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// Escaped quote "" inside quoted field.
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if (i + 1 < row.Length && row[i + 1] == '"')
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{
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sb.Append('"');
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i++;
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}
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else
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{
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inQuotes = false;
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}
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}
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else
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{
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sb.Append(ch);
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}
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}
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else
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{
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if (ch == ',')
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{
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cells.Add(sb.ToString());
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sb.Clear();
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}
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else if (ch == '"' && sb.Length == 0)
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{
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inQuotes = true;
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}
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else
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{
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sb.Append(ch);
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}
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}
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}
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cells.Add(sb.ToString());
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return cells.ToArray();
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}
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}
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/// <summary>One parsed equipment row with required + optional fields.</summary>
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public sealed class EquipmentCsvRow
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{
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// Required (decision #117)
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public required string ZTag { get; init; }
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public required string MachineCode { get; init; }
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public required string SAPID { get; init; }
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public required string EquipmentId { get; init; }
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public required string EquipmentUuid { get; init; }
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public required string Name { get; init; }
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public required string UnsAreaName { get; init; }
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public required string UnsLineName { get; init; }
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// Optional (decision #139 — OPC 40010 Identification fields)
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public string? Manufacturer { get; init; }
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public string? Model { get; init; }
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public string? SerialNumber { get; init; }
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public string? HardwareRevision { get; init; }
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public string? SoftwareRevision { get; init; }
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public string? YearOfConstruction { get; init; }
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public string? AssetLocation { get; init; }
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public string? ManufacturerUri { get; init; }
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public string? DeviceManualUri { get; init; }
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}
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/// <summary>One row-level rejection captured by the parser. Line-number is 1-based in the source file.</summary>
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public sealed record EquipmentCsvRowError(int LineNumber, string Reason);
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/// <summary>Parser output — accepted rows land in staging; rejected rows surface in the preview modal.</summary>
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public sealed record EquipmentCsvParseResult(
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IReadOnlyList<EquipmentCsvRow> AcceptedRows,
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IReadOnlyList<EquipmentCsvRowError> RejectedRows);
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/// <summary>Thrown for file-level format problems (missing version marker, bad header, etc.).</summary>
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public sealed class InvalidCsvFormatException(string message) : Exception(message);
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213
src/ZB.MOM.WW.OtOpcUa.Admin/Services/UnsImpactAnalyzer.cs
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src/ZB.MOM.WW.OtOpcUa.Admin/Services/UnsImpactAnalyzer.cs
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@@ -0,0 +1,213 @@
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namespace ZB.MOM.WW.OtOpcUa.Admin.Services;
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/// <summary>
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/// Pure-function impact preview for UNS structural moves per Phase 6.4 Stream A.2. Given
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/// a <see cref="UnsMoveOperation"/> plus a snapshot of the draft's UNS tree and its
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/// equipment + tag counts, returns an <see cref="UnsImpactPreview"/> the Admin UI shows
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/// in a confirmation modal before committing the move.
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/// </summary>
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/// <remarks>
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/// <para>Stateless + deterministic — testable without EF or a live draft. The caller
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/// (Razor page) loads the draft's snapshot via the normal Configuration services, passes
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/// it in, and the analyzer counts + categorises the impact. The returned
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/// <see cref="UnsImpactPreview.RevisionToken"/> is the token the caller must re-check at
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/// confirm time; a mismatch means another operator mutated the draft between preview +
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/// confirm and the operation needs to be refreshed (decision on concurrent-edit safety
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/// in Phase 6.4 Scope).</para>
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///
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/// <para>Cross-cluster moves are rejected here (decision #82) — equipment is
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/// cluster-scoped; the UI disables the drop target and surfaces an Export/Import workflow
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/// toast instead.</para>
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/// </remarks>
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public static class UnsImpactAnalyzer
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{
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/// <summary>Run the analyzer. Returns a populated preview or throws for invalid operations.</summary>
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public static UnsImpactPreview Analyze(UnsTreeSnapshot snapshot, UnsMoveOperation move)
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{
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ArgumentNullException.ThrowIfNull(snapshot);
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ArgumentNullException.ThrowIfNull(move);
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// Cross-cluster guard — the analyzer refuses rather than silently re-homing.
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if (!string.Equals(move.SourceClusterId, move.TargetClusterId, StringComparison.OrdinalIgnoreCase))
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throw new CrossClusterMoveRejectedException(
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"Equipment is cluster-scoped (decision #82). Use Export → Import to migrate equipment " +
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"across clusters; drag/drop rejected.");
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return move.Kind switch
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{
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UnsMoveKind.LineMove => AnalyzeLineMove(snapshot, move),
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UnsMoveKind.AreaRename => AnalyzeAreaRename(snapshot, move),
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UnsMoveKind.LineMerge => AnalyzeLineMerge(snapshot, move),
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_ => throw new ArgumentOutOfRangeException(nameof(move), move.Kind, $"Unsupported move kind {move.Kind}"),
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};
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}
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private static UnsImpactPreview AnalyzeLineMove(UnsTreeSnapshot snapshot, UnsMoveOperation move)
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{
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var line = snapshot.FindLine(move.SourceLineId!)
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?? throw new UnsMoveValidationException($"Source line '{move.SourceLineId}' not found in draft {snapshot.DraftGenerationId}.");
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var targetArea = snapshot.FindArea(move.TargetAreaId!)
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?? throw new UnsMoveValidationException($"Target area '{move.TargetAreaId}' not found in draft {snapshot.DraftGenerationId}.");
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var warnings = new List<string>();
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if (targetArea.LineIds.Contains(line.LineId, StringComparer.OrdinalIgnoreCase))
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warnings.Add($"Target area '{targetArea.Name}' already contains line '{line.Name}' — dropping a no-op move.");
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// If the target area has a line with the same display name as the mover, warn about
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// visual ambiguity even though the IDs differ (operators frequently reuse line names).
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if (targetArea.LineIds.Any(lid =>
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snapshot.FindLine(lid) is { } sibling &&
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string.Equals(sibling.Name, line.Name, StringComparison.OrdinalIgnoreCase) &&
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!string.Equals(sibling.LineId, line.LineId, StringComparison.OrdinalIgnoreCase)))
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{
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warnings.Add($"Target area '{targetArea.Name}' already has a line named '{line.Name}'. Consider renaming before the move.");
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}
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return new UnsImpactPreview
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{
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AffectedEquipmentCount = line.EquipmentCount,
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AffectedTagCount = line.TagCount,
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CascadeWarnings = warnings,
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RevisionToken = snapshot.RevisionToken,
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HumanReadableSummary =
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$"Moving line '{line.Name}' from area '{snapshot.FindAreaByLineId(line.LineId)?.Name ?? "?"}' " +
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$"to '{targetArea.Name}' will re-home {line.EquipmentCount} equipment + re-parent {line.TagCount} tags.",
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};
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}
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private static UnsImpactPreview AnalyzeAreaRename(UnsTreeSnapshot snapshot, UnsMoveOperation move)
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{
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var area = snapshot.FindArea(move.SourceAreaId!)
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?? throw new UnsMoveValidationException($"Source area '{move.SourceAreaId}' not found in draft {snapshot.DraftGenerationId}.");
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var affectedEquipment = area.LineIds
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.Select(lid => snapshot.FindLine(lid)?.EquipmentCount ?? 0)
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.Sum();
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var affectedTags = area.LineIds
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.Select(lid => snapshot.FindLine(lid)?.TagCount ?? 0)
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.Sum();
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return new UnsImpactPreview
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{
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AffectedEquipmentCount = affectedEquipment,
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AffectedTagCount = affectedTags,
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CascadeWarnings = [],
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RevisionToken = snapshot.RevisionToken,
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HumanReadableSummary =
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$"Renaming area '{area.Name}' → '{move.NewName}' cascades to {area.LineIds.Count} lines / " +
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$"{affectedEquipment} equipment / {affectedTags} tags.",
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};
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}
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private static UnsImpactPreview AnalyzeLineMerge(UnsTreeSnapshot snapshot, UnsMoveOperation move)
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{
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var src = snapshot.FindLine(move.SourceLineId!)
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?? throw new UnsMoveValidationException($"Source line '{move.SourceLineId}' not found.");
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var dst = snapshot.FindLine(move.TargetLineId!)
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?? throw new UnsMoveValidationException($"Target line '{move.TargetLineId}' not found.");
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var warnings = new List<string>();
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if (!string.Equals(snapshot.FindAreaByLineId(src.LineId)?.AreaId,
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snapshot.FindAreaByLineId(dst.LineId)?.AreaId,
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StringComparison.OrdinalIgnoreCase))
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{
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warnings.Add($"Lines '{src.Name}' and '{dst.Name}' are in different areas. The merge will re-parent equipment + tags into '{dst.Name}'s area.");
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}
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return new UnsImpactPreview
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{
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AffectedEquipmentCount = src.EquipmentCount,
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AffectedTagCount = src.TagCount,
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CascadeWarnings = warnings,
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RevisionToken = snapshot.RevisionToken,
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||||
HumanReadableSummary =
|
||||
$"Merging line '{src.Name}' into '{dst.Name}': {src.EquipmentCount} equipment + {src.TagCount} tags re-parent. " +
|
||||
$"The source line is deleted at commit.",
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>Kind of UNS structural move the analyzer understands.</summary>
|
||||
public enum UnsMoveKind
|
||||
{
|
||||
/// <summary>Drag a whole line from one area to another.</summary>
|
||||
LineMove,
|
||||
|
||||
/// <summary>Rename an area (cascades to the UNS paths of every equipment + tag below it).</summary>
|
||||
AreaRename,
|
||||
|
||||
/// <summary>Merge two lines into one; source line's equipment + tags are re-parented.</summary>
|
||||
LineMerge,
|
||||
}
|
||||
|
||||
/// <summary>One UNS structural move request.</summary>
|
||||
/// <param name="Kind">Move variant — selects which source + target fields are required.</param>
|
||||
/// <param name="SourceClusterId">Cluster of the source node. Must match <see cref="TargetClusterId"/> (decision #82).</param>
|
||||
/// <param name="TargetClusterId">Cluster of the target node.</param>
|
||||
/// <param name="SourceAreaId">Source area id for <see cref="UnsMoveKind.AreaRename"/>.</param>
|
||||
/// <param name="SourceLineId">Source line id for <see cref="UnsMoveKind.LineMove"/> / <see cref="UnsMoveKind.LineMerge"/>.</param>
|
||||
/// <param name="TargetAreaId">Target area id for <see cref="UnsMoveKind.LineMove"/>.</param>
|
||||
/// <param name="TargetLineId">Target line id for <see cref="UnsMoveKind.LineMerge"/>.</param>
|
||||
/// <param name="NewName">New display name for <see cref="UnsMoveKind.AreaRename"/>.</param>
|
||||
public sealed record UnsMoveOperation(
|
||||
UnsMoveKind Kind,
|
||||
string SourceClusterId,
|
||||
string TargetClusterId,
|
||||
string? SourceAreaId = null,
|
||||
string? SourceLineId = null,
|
||||
string? TargetAreaId = null,
|
||||
string? TargetLineId = null,
|
||||
string? NewName = null);
|
||||
|
||||
/// <summary>Snapshot of the UNS tree + counts the analyzer walks.</summary>
|
||||
public sealed class UnsTreeSnapshot
|
||||
{
|
||||
public required long DraftGenerationId { get; init; }
|
||||
public required DraftRevisionToken RevisionToken { get; init; }
|
||||
public required IReadOnlyList<UnsAreaSummary> Areas { get; init; }
|
||||
public required IReadOnlyList<UnsLineSummary> Lines { get; init; }
|
||||
|
||||
public UnsAreaSummary? FindArea(string areaId) =>
|
||||
Areas.FirstOrDefault(a => string.Equals(a.AreaId, areaId, StringComparison.OrdinalIgnoreCase));
|
||||
|
||||
public UnsLineSummary? FindLine(string lineId) =>
|
||||
Lines.FirstOrDefault(l => string.Equals(l.LineId, lineId, StringComparison.OrdinalIgnoreCase));
|
||||
|
||||
public UnsAreaSummary? FindAreaByLineId(string lineId) =>
|
||||
Areas.FirstOrDefault(a => a.LineIds.Contains(lineId, StringComparer.OrdinalIgnoreCase));
|
||||
}
|
||||
|
||||
public sealed record UnsAreaSummary(string AreaId, string Name, IReadOnlyList<string> LineIds);
|
||||
|
||||
public sealed record UnsLineSummary(string LineId, string Name, int EquipmentCount, int TagCount);
|
||||
|
||||
/// <summary>
|
||||
/// Opaque per-draft revision fingerprint. Preview fetches the current token + stores it
|
||||
/// in the <see cref="UnsImpactPreview.RevisionToken"/>. Confirm compares the token against
|
||||
/// the draft's live value; mismatch means another operator mutated the draft between
|
||||
/// preview + commit — raise <c>409 Conflict / refresh-required</c> in the UI.
|
||||
/// </summary>
|
||||
public sealed record DraftRevisionToken(string Value)
|
||||
{
|
||||
/// <summary>Compare two tokens for equality; null-safe.</summary>
|
||||
public bool Matches(DraftRevisionToken? other) =>
|
||||
other is not null &&
|
||||
string.Equals(Value, other.Value, StringComparison.Ordinal);
|
||||
}
|
||||
|
||||
/// <summary>Output of <see cref="UnsImpactAnalyzer.Analyze"/>.</summary>
|
||||
public sealed class UnsImpactPreview
|
||||
{
|
||||
public required int AffectedEquipmentCount { get; init; }
|
||||
public required int AffectedTagCount { get; init; }
|
||||
public required IReadOnlyList<string> CascadeWarnings { get; init; }
|
||||
public required DraftRevisionToken RevisionToken { get; init; }
|
||||
public required string HumanReadableSummary { get; init; }
|
||||
}
|
||||
|
||||
/// <summary>Thrown when a move targets a different cluster than the source (decision #82).</summary>
|
||||
public sealed class CrossClusterMoveRejectedException(string message) : Exception(message);
|
||||
|
||||
/// <summary>Thrown when the move operation references a source / target that doesn't exist in the draft.</summary>
|
||||
public sealed class UnsMoveValidationException(string message) : Exception(message);
|
||||
Reference in New Issue
Block a user