Scan/OCR improvements: Scan New Asset button, fix barcode scanner, serial number OCR search #63

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2026-06-02T22:05:31Z

shawn commented

2026-06-02 22:05:31 +00:00

Changes

1. Scan New Asset button

Added Scan New button after scanning/OCR'ing an existing asset in both barcode and OCR modes
Barcode scans now show result in-place (no longer navigate away to Assets tab)
Added resetBarcodeScanner() and resetOcrScanner() functions that cleanly reset to scan-ready state
Also added Scan New button to the showNewAssetForm (asset not found case)

2. Barcode scanner fix

Removed TRY_HARDER decode hint (was too slow on mobile — caused frame-rate decode thrashing)
Reduced from 13 barcode formats to 7 focused 1D formats (CODE_128, CODE_39, EAN_13, EAN_8, UPC_A, UPC_E, ITF)
Added checkZxingLoaded() to detect CDN load failures early
Extended camera fail timeout from 5s to 10s for slower mobile browsers
Added showFallbackCameraError() for clear messaging when camera is unavailable

3. OCR serial number search

Server already returns matched_assets from DB cross-referencing (serial_number, connect_id, etc.)
Previously client displayOcrResult() ignored matched_assets when machine_id was null
Now shows ✅ Asset found via serial/ID match with matched asset details and View Details buttons
Also shows serial/ID matches as supplementary info when machine_id IS found

Files modified

static/index.html — frontend SPA

Verification

Server restarted and serving on :8901
All 4 new functions exist in browser runtime
OCR with matched_assets renders correctly (serial number search)
Barcode result shows both View Details and Scan New buttons
commit dd4744d pushed to gitea

## Changes ### 1. Scan New Asset button - Added `Scan New` button after scanning/OCR'ing an existing asset in both barcode and OCR modes - Barcode scans now show result in-place (no longer navigate away to Assets tab) - Added `resetBarcodeScanner()` and `resetOcrScanner()` functions that cleanly reset to scan-ready state - Also added `Scan New` button to the `showNewAssetForm` (asset not found case) ### 2. Barcode scanner fix - Removed `TRY_HARDER` decode hint (was too slow on mobile — caused frame-rate decode thrashing) - Reduced from 13 barcode formats to 7 focused 1D formats (CODE_128, CODE_39, EAN_13, EAN_8, UPC_A, UPC_E, ITF) - Added `checkZxingLoaded()` to detect CDN load failures early - Extended camera fail timeout from 5s to 10s for slower mobile browsers - Added `showFallbackCameraError()` for clear messaging when camera is unavailable ### 3. OCR serial number search - Server already returns `matched_assets` from DB cross-referencing (serial_number, connect_id, etc.) - Previously client `displayOcrResult()` ignored `matched_assets` when machine_id was null - Now shows `✅ Asset found via serial/ID match` with matched asset details and View Details buttons - Also shows serial/ID matches as supplementary info when machine_id IS found ## Files modified - `static/index.html` — frontend SPA ## Verification - [x] Server restarted and serving on :8901 - [x] All 4 new functions exist in browser runtime - [x] OCR with matched_assets renders correctly (serial number search) - [x] Barcode result shows both View Details and Scan New buttons - [x] commit dd4744d pushed to gitea

shawn closed this issue

2026-06-02 22:06:01 +00:00

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Reference: shawn/canteen-asset-tracker#63