100 lines
4.6 KiB
C#
100 lines
4.6 KiB
C#
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using System.Text.Json;
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using Microsoft.EntityFrameworkCore;
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using WordVersioning.Api.Data;
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using WordVersioning.Api.Models;
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namespace WordVersioning.Api.Services;
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/// <summary>entry หนึ่ง field ใน `DocumentVersion.FieldsSnapshotJson` (เอกสารที่ผูก template)</summary>
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public record FieldSnapshotEntry(string Value, bool Missing);
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public record FieldSyncResult(string? SnapshotJson);
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public interface IFieldSyncService
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{
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/// <summary>FR-11 — เทียบ fields ที่ส่งมากับ TemplateField ของ template ที่ document ผูกอยู่:
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/// stage การ upsert `DocumentFieldValue` (latest value) ลง change tracker (**caller เป็นคน SaveChanges**)
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/// แล้วคืน snapshot JSON ของ version นี้ไปเก็บใน `DocumentVersion.FieldsSnapshotJson`
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///
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/// policy ตาม spec: field ขาด (ผู้ใช้ลบ content control) → เก็บค่าเดิม + mark missing **ไม่ fail**;
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/// field เกินนิยาม → ignore; `UpdatedByUserId` จาก JWT เสมอ</summary>
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Task<FieldSyncResult> StageFieldSyncAsync(
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Document document,
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Guid sourceVersionId,
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IReadOnlyDictionary<string, string?> sentFields,
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DateTimeOffset now,
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CancellationToken ct);
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}
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public class FieldSyncService(AppDbContext db, ICurrentUser currentUser) : IFieldSyncService
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{
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// camelCase ให้ตรงกับ JSON ที่ API คืนทั้งระบบ
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private static readonly JsonSerializerOptions SnapshotJsonOptions = new(JsonSerializerDefaults.Web);
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public async Task<FieldSyncResult> StageFieldSyncAsync(
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Document document,
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Guid sourceVersionId,
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IReadOnlyDictionary<string, string?> sentFields,
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DateTimeOffset now,
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CancellationToken ct)
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{
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if (document.TemplateId is null)
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{
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// เอกสารไม่ผูก template (track เองจาก add-in) — ไม่มีนิยามให้เทียบ
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// เก็บ map ดิบตามที่ส่งมาใน snapshot ไว้ดู history ได้ (Phase 2 behavior)
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return sentFields.Count == 0
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? new FieldSyncResult(null)
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: new FieldSyncResult(JsonSerializer.Serialize(sentFields, SnapshotJsonOptions));
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}
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var fieldDefs = await db.TemplateFields.AsNoTracking()
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.Where(f => f.TemplateId == document.TemplateId)
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.OrderBy(f => f.SortOrder)
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.ToListAsync(ct);
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if (fieldDefs.Count == 0)
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return new FieldSyncResult(null);
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// tracked — update ทีหลังให้เข้า SaveChanges เดียวกับ version insert
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var existingValues = await db.DocumentFieldValues
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.Where(v => v.DocumentId == document.Id)
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.ToDictionaryAsync(v => v.FieldKey, ct);
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var snapshot = new Dictionary<string, FieldSnapshotEntry>(fieldDefs.Count);
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foreach (var def in fieldDefs)
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{
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if (sentFields.TryGetValue(def.Key, out var sentValue))
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{
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sentValue ??= string.Empty;
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if (existingValues.TryGetValue(def.Key, out var row))
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{
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row.Value = sentValue;
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row.SourceVersionId = sourceVersionId;
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row.UpdatedByUserId = currentUser.UserId;
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row.UpdatedAt = now;
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}
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else
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{
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db.DocumentFieldValues.Add(new DocumentFieldValue
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{
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DocumentId = document.Id,
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FieldKey = def.Key,
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Value = sentValue,
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SourceVersionId = sourceVersionId,
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UpdatedByUserId = currentUser.UserId,
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UpdatedAt = now,
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});
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}
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snapshot[def.Key] = new FieldSnapshotEntry(sentValue, Missing: false);
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}
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else
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{
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// field หายจากเอกสาร (ผู้ใช้ลบ content control) — เก็บค่าเดิม + mark missing ไม่ fail (AC-14)
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var oldValue = existingValues.TryGetValue(def.Key, out var row) ? row.Value : string.Empty;
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snapshot[def.Key] = new FieldSnapshotEntry(oldValue, Missing: true);
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}
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}
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return new FieldSyncResult(JsonSerializer.Serialize(snapshot, SnapshotJsonOptions));
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}
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}
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