Dmitry
f81e405d4f
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69 lines
2.6 KiB
Dart
69 lines
2.6 KiB
Dart
import 'package:drift/drift.dart';
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import '../converters.dart' show generateUuid, StringListConverter, JsonListConverter;
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import '../postgres_constants.dart';
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import 'users.dart';
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/// Таблица DiscountCampaigns - кампании скидок
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class DiscountCampaigns extends Table {
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TextColumn get id => text().withDefault(const Constant('gen_random_uuid()'))();
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TextColumn get name => text().nullable()();
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DateTimeColumn get start => dateTime()();
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DateTimeColumn get finish => dateTime()();
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// Статус (enum as string)
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TextColumn get status => text()(); // created, active, expired, disabled
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// Теги (JSON array)
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TextColumn get tags => text()
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.withDefault(const Constant('[]'))
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.map(const StringListConverter())();
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// Audit
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DateTimeColumn get createdAt => dateTime().withDefault(currentTimestamp)();
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DateTimeColumn get updatedAt => dateTime().withDefault(currentTimestamp)();
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BoolColumn get isDeleted => boolean()
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.withDefault(const Constant(false))
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.customConstraint('')(); // PostgreSQL использует нативный BOOLEAN, не нужен CHECK
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@override
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Set<Column> get primaryKey => {id};
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}
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/// Таблица Discounts - скидки
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class Discounts extends Table {
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TextColumn get id => text().withDefault(const Constant('gen_random_uuid()'))();
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TextColumn get campaignId => text().references(DiscountCampaigns, #id, onDelete: KeyAction.cascade)();
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// Процент скидки (0-100)
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RealColumn get discountPercent => real()();
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// Продукты (JSON array)
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TextColumn get products => text()
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.withDefault(const Constant('[]'))
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.map(const JsonListConverter())();
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// Audit
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DateTimeColumn get createdAt => dateTime().withDefault(currentTimestamp)();
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DateTimeColumn get updatedAt => dateTime().withDefault(currentTimestamp)();
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BoolColumn get isDeleted => boolean()
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.withDefault(const Constant(false))
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.customConstraint('')(); // PostgreSQL использует нативный BOOLEAN, не нужен CHECK
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@override
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Set<Column> get primaryKey => {id};
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}
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/// Junction table для связи Discounts ↔ UserDatas (many-to-many)
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class DiscountUserDatas extends Table {
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TextColumn get discountId => text().references(Discounts, #id, onDelete: KeyAction.cascade)();
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TextColumn get userId => text().references(Users, #id, onDelete: KeyAction.cascade)();
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DateTimeColumn get grantedAt => dateTime().withDefault(currentTimestamp)();
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@override
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Set<Column> get primaryKey => {discountId, userId};
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}
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// Конвертеры импортированы из converters.dart
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