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Krzysztof kuhy Rudnicki
e761926df4
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Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
50 lines
1.8 KiB
Dart
50 lines
1.8 KiB
Dart
/// The calorie goal the user last picked -- remembered and synced.
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///
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/// Stored as one extra field, `goal`, on the synced `profile` record (its
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/// own stamp: saving it never counts as editing birth, height or sex), so the
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/// sentence "To lose 0.5 kg / week on Moderate eat ..." reads the same on
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/// the PC gate and the phone. Each part is validated on read: an unknown
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/// direction, unit or activity falls back to that part of [defaultGoal].
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///
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/// Port of `diet_guard/_body_prefs.py`.
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library;
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import 'package:diet_guard_app/services/body_energy.dart';
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import 'package:diet_guard_app/services/body_service.dart';
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/// The profile field the goal is stored under.
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const String goalField = 'goal';
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/// The wire/disk form (short keys).
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Map<String, Object> goalToJson(Goal goal) => {
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'dir': goal.direction,
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'amt': goal.amount,
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'wu': goal.weightUnit,
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'tu': goal.timeUnit,
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'act': goal.activity,
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};
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/// Parses a stored goal part by part, defaulting whatever is unusable.
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Goal goalFromJson(Object? raw) {
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if (raw is! Map) return defaultGoal;
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final dir = raw['dir'];
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final amt = raw['amt'];
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final wu = raw['wu'];
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final tu = raw['tu'];
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final act = raw['act'];
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return defaultGoal.copyWith(
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direction: dir is String && directions.contains(dir) ? dir : null,
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amount: amt is num && amt >= 0 ? amt.toDouble() : null,
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weightUnit: wu is String && weightUnits.containsKey(wu) ? wu : null,
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timeUnit: tu is String && timeUnits.containsKey(tu) ? tu : null,
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activity: act is String && activityChoices.contains(act) ? act : null,
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);
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}
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/// The remembered goal (the default until one is saved).
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Goal savedGoal(BodyService body) => goalFromJson(body.profileValue(goalField));
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/// Remembers (and syncs) [goal].
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Future<void> setGoal(BodyService body, Goal goal) =>
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body.setProfileFields({goalField: goalToJson(goal)});
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