Dmitry
0f49280805
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85 lines
3.2 KiB
Dart
85 lines
3.2 KiB
Dart
import 'package:drift/drift.dart';
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import 'package:drift_postgres/drift_postgres.dart';
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import '../converters.dart'
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show generateUuid, StringListConverter, JsonListConverter;
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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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// ID как String, но фактически UUID (генерируется PostgreSQL на стороне БД)
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TextColumn get id =>
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text().withDefault(const CustomExpression('gen_random_uuid()::text'))();
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TextColumn get name => text().nullable()();
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Column<PgDateTime> get start => customType(PgTypes.timestampWithTimezone)();
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Column<PgDateTime> get finish => customType(PgTypes.timestampWithTimezone)();
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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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Column<PgDateTime> get createdAt =>
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customType(PgTypes.timestampWithTimezone).withDefault(now())();
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Column<PgDateTime> get updatedAt =>
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customType(PgTypes.timestampWithTimezone).withDefault(now())();
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BoolColumn get isDeleted =>
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boolean().customConstraint('NOT NULL DEFAULT FALSE')();
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// PostgreSQL использует нативный BOOLEAN
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Column<PgDateTime> get deletedAt =>
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customType(PgTypes.timestampWithTimezone).nullable()();
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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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// ID как String, но фактически UUID (генерируется PostgreSQL на стороне БД)
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TextColumn get id =>
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text().withDefault(const CustomExpression('gen_random_uuid()::text'))();
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TextColumn get campaignId =>
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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 =>
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text().withDefault(const Constant('[]')).map(const JsonListConverter())();
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// Audit
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Column<PgDateTime> get createdAt =>
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customType(PgTypes.timestampWithTimezone).withDefault(now())();
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Column<PgDateTime> get updatedAt =>
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customType(PgTypes.timestampWithTimezone).withDefault(now())();
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BoolColumn get isDeleted =>
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boolean().customConstraint('NOT NULL DEFAULT FALSE')();
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// PostgreSQL использует нативный BOOLEAN
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Column<PgDateTime> get deletedAt =>
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customType(PgTypes.timestampWithTimezone).nullable()();
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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 =>
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text().references(Discounts, #id, onDelete: KeyAction.cascade)();
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TextColumn get userId =>
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text().references(Users, #id, onDelete: KeyAction.cascade)();
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Column<PgDateTime> get grantedAt =>
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customType(PgTypes.timestampWithTimezone).withDefault(now())();
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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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