docs: add design plans for API and auto-fill features

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-20 08:54:21 -05:00
parent 3554bb6110
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 # Auto-fill Equipment/Drawing from Export History
 ## Problem
 When a SolidWorks file is opened that doesn't match the `DrawingInfo` regex (e.g., `Conveyor Frame.sldasm` instead of `5028 A02 Conveyor.slddrw`), the equipment and drawing number dropdowns are left empty even though the file may have been exported before with known values.
 ## Decision
 - **Lookup key:** SolidWorks source file path (`ActiveDocument.FilePath`)
 - **Storage:** Query the existing `ExportRecords` table (no new table or migration)
 - **Priority:** Database lookup first; fall back to title regex parse if no history found
 ## Design
 ### Modify `UpdateActiveDocumentDisplay()` in `MainForm.cs`
 When the active document changes:
 1. Query the DB for the most recent `ExportRecord` where `SourceFilePath` matches `activeDoc.FilePath` (case-insensitive)
 2. If found, parse the stored `DrawingNumber` via `DrawingInfo.Parse()` and auto-fill equipment/drawing dropdowns
 3. If not found, fall back to current behavior: `DrawingInfo.Parse(activeDoc.Title)`
 ### What doesn't change
 - No schema changes, no new migration
 - Equipment/drawing dropdowns still populated with historical values in `InitializeDrawingDropdowns()`
 - Export flow untouched
 ### Error handling
 - DB query wrapped in try/catch so failures don't break the UI
 - Case-insensitive path comparison (Windows paths are case-insensitive)