import 'package:drift/drift.dart';

// ─── Mood Entries ────────────────────────────────────────────────────────────

class MoodEntries extends Table {
  IntColumn get id => integer().autoIncrement()();
  DateTimeColumn get timestamp => dateTime()();
  IntColumn get moodLevel => integer()(); // 1–5
  TextColumn get note => text().nullable()();
  DateTimeColumn get createdAt => dateTime().withDefault(currentDateAndTime)();
}

// ─── Activities ──────────────────────────────────────────────────────────────

class Activities extends Table {
  IntColumn get id => integer().autoIncrement()();
  TextColumn get name => text().withLength(min: 1, max: 50)();
  IntColumn get iconCodepoint => integer()(); // Icons codepoint value
  TextColumn get colourHex =>
      text().withLength(min: 7, max: 7)(); // e.g. #FF5733
  BoolColumn get isCustom => boolean().withDefault(const Constant(false))();
  IntColumn get sortOrder => integer().withDefault(const Constant(0))();
}

// ─── Entry ↔ Activity (many-to-many) ─────────────────────────────────────────

class EntryActivities extends Table {
  IntColumn get entryId => integer().references(MoodEntries, #id)();
  IntColumn get activityId => integer().references(Activities, #id)();

  @override
  Set<Column> get primaryKey => {entryId, activityId};
}

// ─── Tags ────────────────────────────────────────────────────────────────────

class Tags extends Table {
  IntColumn get id => integer().autoIncrement()();
  TextColumn get name => text().withLength(min: 1, max: 30)();
  TextColumn get colourHex => text().withLength(min: 7, max: 7)();
}

// ─── Entry ↔ Tag (many-to-many) ───────────────────────────────────────────────

class EntryTags extends Table {
  IntColumn get entryId => integer().references(MoodEntries, #id)();
  IntColumn get tagId => integer().references(Tags, #id)();

  @override
  Set<Column> get primaryKey => {entryId, tagId};
}

// ─── LLM Insight Cache ───────────────────────────────────────────────────────

class LlmInsights extends Table {
  IntColumn get id => integer().autoIncrement()();
  TextColumn get type => text()(); // 'weekly' | 'monthly' | 'query'
  TextColumn get promptHash => text()(); // SHA256 of the prompt — cache key
  TextColumn get responseText => text()();
  DateTimeColumn get generatedAt =>
      dateTime().withDefault(currentDateAndTime)();
  DateTimeColumn get rangeStart => dateTime().nullable()();
  DateTimeColumn get rangeEnd => dateTime().nullable()();
}

// ─── Settings ────────────────────────────────────────────────────────────────

class UserSettings extends Table {
  IntColumn get id => integer().autoIncrement()();
  TextColumn get key => text().withLength(min: 1, max: 50).unique()();
  TextColumn get value => text()();
}