vjrj
6809dc6143
Lower the bulk-digitization cliff with two more routes on top of the already-landed CSV import and "save and add another": - Photo-first drafts (capture now, catalogue later): burst-capture photos (camera or multi-gallery) into unnamed draft varieties, shown in a "to catalogue" tray, hidden from the main list until named. Adds Variety.isDraft (schema), addDraftVariety/watchDrafts/nameDraft, the triage sheet and the inventory banner. - On-device OCR label suggestion (Tesseract, offline, no Google): a "Suggest name from photo" button in the naming dialog behind a LabelTextExtractor interface (Tesseract on Android/iOS, no-op elsewhere). Reads the largest print via hOCR bounding boxes, drops boilerplate/low-confidence noise, preprocesses (grayscale, contrast, upscale) and sweeps rotations (0-315 deg) so tilted packets still read. Bundles tessdata_fast eng+spa; validated on-device against real packets. The photo is written to a temp file deleted immediately in a finally block (the plugin needs a path) - a bounded, documented exception to no-plaintext-at-rest. This commit also carries the co-developed schema evolution v5 to v8 that shares these files (organic flag, species viability years, crop calendar, lot provenance/abundance/preservation format, condition checks) plus their exports/migrations and i18n. Tests: CSV/draft/OCR unit + widget + migration green in isolation. Note: the full widget suite currently hangs (>10 min) - under investigation.
39 lines
1.5 KiB
Dart
39 lines
1.5 KiB
Dart
/// Crop-calendar months are stored compactly as a 12-bit mask in a single
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/// nullable integer column (bit 0 = January … bit 11 = December). A phase can
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/// happen in several months (e.g. sow lettuce in March, April and September),
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/// so the calendar is a *set* of months, not one. `null` or `0` means "not
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/// recorded". Pure functions — no I/O — so they are trivially testable.
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library;
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/// Packs a set of 1..12 month numbers into a bitmask, or null when empty (so an
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/// unset phase stays null in the DB rather than 0). Values outside 1..12 are
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/// ignored.
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int? monthsToMask(Iterable<int> months) {
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var mask = 0;
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for (final m in months) {
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if (m >= 1 && m <= 12) mask |= 1 << (m - 1);
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}
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return mask == 0 ? null : mask;
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}
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/// Unpacks a month bitmask into an ascending list of 1..12 month numbers.
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/// Returns an empty list for null or 0.
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List<int> maskToMonths(int? mask) {
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if (mask == null || mask == 0) return const [];
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return [
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for (var m = 1; m <= 12; m++)
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if (mask & (1 << (m - 1)) != 0) m,
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];
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}
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/// Whether month [month] (1..12) is set in [mask].
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bool maskHasMonth(int? mask, int month) =>
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mask != null && month >= 1 && month <= 12 && mask & (1 << (month - 1)) != 0;
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/// Toggles month [month] (1..12) in [mask], returning the new mask (null when
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/// the result is empty).
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int? toggleMonth(int? mask, int month) {
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if (month < 1 || month > 12) return mask;
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final next = (mask ?? 0) ^ (1 << (month - 1));
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return next == 0 ? null : next;
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}
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