import 'package:drift/drift.dart';

// 11 user-data tables + habit_dose_variants (normalized child per ADR-0002).

class Users extends Table {
  TextColumn get id => text()();
  TextColumn get displayName => text().named('display_name').nullable()();
  TextColumn get locale => text().withDefault(const Constant('ko-KR'))();
  TextColumn get timezone => text().withDefault(const Constant('Asia/Seoul'))();
  TextColumn get createdAt => text().named('created_at')();
  TextColumn get preferencesJson => text().named('preferences_json').nullable()();

  @override
  Set<Column> get primaryKey => {id};
}

class Phases extends Table {
  TextColumn get id => text()();
  TextColumn get userId =>
      text().named('user_id').customConstraint('REFERENCES users(id) NOT NULL')();
  TextColumn get title => text().nullable()();
  TextColumn get startedAt => text().named('started_at')();
  TextColumn get endedAt => text().named('ended_at').nullable()();
  IntColumn get durationWeeks => integer()
      .named('duration_weeks')
      .withDefault(const Constant(6))
      .check(const CustomExpression<bool>("duration_weeks >= 1"))();
  TextColumn get status => text().check(const CustomExpression<bool>(
      "status IN ('active','completed','abandoned')"))();
  TextColumn get intentionText => text().named('intention_text').nullable()();
  BoolColumn get rewardDeclarationsLocked => boolean()
      .named('reward_declarations_locked')
      .withDefault(const Constant(false))();

  @override
  Set<Column> get primaryKey => {id};
}

class Habits extends Table {
  TextColumn get id => text()();
  TextColumn get userId =>
      text().named('user_id').customConstraint('REFERENCES users(id) NOT NULL')();
  TextColumn get phaseId => text()
      .named('phase_id')
      .nullable()
      .customConstraint('NULL REFERENCES phases(id) ON DELETE SET NULL')();
  TextColumn get type =>
      text().check(const CustomExpression<bool>("type IN ('build','break')"))();
  TextColumn get status => text().check(const CustomExpression<bool>(
      "status IN ('active','paused','completed','abandoned')"))();
  TextColumn get title => text()();
  TextColumn get protocolId => text()
      .named('protocol_id')
      .nullable()
      .customConstraint('NULL REFERENCES protocols(id)')();
  TextColumn get breakProtocolId => text()
      .named('break_protocol_id')
      .nullable()
      .customConstraint('NULL REFERENCES break_protocols(id)')();
  TextColumn get commonFrameIdsJson =>
      text().named('common_frame_ids_json').nullable()();
  TextColumn get frameLevel => text().named('frame_level').check(
      const CustomExpression<bool>("frame_level IN ('L2','L3')"))(); // R3
  TextColumn get frameOriginalText => text().named('frame_original_text').nullable()();
  TextColumn get frameFramedText => text().named('frame_framed_text')();
  TextColumn get anchorWhen => text().named('anchor_when').nullable()();
  TextColumn get anchorAfterWhat => text().named('anchor_after_what').nullable()();
  TextColumn get anchorWhere => text().named('anchor_where').nullable()();
  IntColumn get stackPosition => integer().named('stack_position').nullable().check(
      const CustomExpression<bool>("stack_position IS NULL OR stack_position >= 1"))();
  TextColumn get minDose => text().named('min_dose').nullable()();
  TextColumn get targetDose => text().named('target_dose').nullable()();
  TextColumn get startedAt => text().named('started_at')();
  TextColumn get endedAt => text().named('ended_at').nullable()();
  TextColumn get tagsJson => text().named('tags_json').nullable()();

  @override
  Set<Column> get primaryKey => {id};

  @override
  List<String> get customConstraints => [
        // XOR: build → protocol_id, break → break_protocol_id
        "CHECK ((type = 'build' AND protocol_id IS NOT NULL AND break_protocol_id IS NULL) "
            "OR (type = 'break' AND break_protocol_id IS NOT NULL AND protocol_id IS NULL))",
      ];
}

class HabitDoseVariants extends Table {
  TextColumn get variantId => text().named('variant_id')();
  TextColumn get habitId => text()
      .named('habit_id')
      .customConstraint('REFERENCES habits(id) ON DELETE CASCADE NOT NULL')();
  TextColumn get label => text()();
  TextColumn get doseText => text().named('dose_text')();
  TextColumn get contextTagsJson => text().named('context_tags_json').nullable()();
  TextColumn get conditionTagsJson => text().named('condition_tags_json').nullable()();
  BoolColumn get isMinimum =>
      boolean().named('is_minimum').withDefault(const Constant(false))();
  IntColumn get sortOrder =>
      integer().named('sort_order').withDefault(const Constant(0))();

  @override
  Set<Column> get primaryKey => {variantId};
}

class IfThenRules extends Table {
  TextColumn get id => text()();
  TextColumn get habitId => text()
      .named('habit_id')
      .customConstraint('REFERENCES habits(id) ON DELETE CASCADE NOT NULL')();
  TextColumn get ifCondition => text().named('if_condition')();
  TextColumn get thenAction => text().named('then_action')();
  TextColumn get triggerType => text().named('trigger_type').nullable().check(
      const CustomExpression<bool>(
          "trigger_type IS NULL OR trigger_type IN ('time','location','emotion','preceding_action','urge')"))();
  IntColumn get priority => integer()
      .withDefault(const Constant(1))
      .check(const CustomExpression<bool>("priority BETWEEN 1 AND 3"))();
  TextColumn get createdAt => text().named('created_at').nullable()();

  @override
  Set<Column> get primaryKey => {id};
}

class TrackerEntries extends Table {
  TextColumn get id => text()();
  TextColumn get habitId => text()
      .named('habit_id')
      .customConstraint('REFERENCES habits(id) ON DELETE RESTRICT NOT NULL')();
  TextColumn get date => text()();
  TextColumn get value =>
      text().check(const CustomExpression<bool>("value IN ('done','blank')"))(); // R5
  TextColumn get loggedAt => text().named('logged_at').nullable()();
  TextColumn get note => text().nullable().check(
      const CustomExpression<bool>("note IS NULL OR length(note) <= 200"))();
  TextColumn get variantId => text()
      .named('variant_id')
      .nullable()
      .customConstraint(
          'NULL REFERENCES habit_dose_variants(variant_id) ON DELETE SET NULL')();
  TextColumn get ctxLocation => text().named('ctx_location').nullable()();
  TextColumn get ctxCondition => text().named('ctx_condition').nullable()();

  @override
  Set<Column> get primaryKey => {id};
}

class LapseLogs extends Table {
  TextColumn get id => text()();
  TextColumn get habitId => text()
      .named('habit_id')
      .customConstraint('REFERENCES habits(id) NOT NULL')();
  TextColumn get date => text()();
  TextColumn get labelText => text().named('label_text')();
  TextColumn get examineHaltJson => text().named('examine_halt_json')();
  TextColumn get antecedentJson => text().named('antecedent_json')();
  TextColumn get replan => text()();
  TextColumn get nextAction => text().named('next_action')();
  TextColumn get createdAt => text().named('created_at').nullable()();

  @override
  Set<Column> get primaryKey => {id};
}

class UrgeLogs extends Table {
  TextColumn get id => text()();
  TextColumn get habitId => text()
      .named('habit_id')
      .customConstraint('REFERENCES habits(id) NOT NULL')();
  TextColumn get occurredAt => text().named('occurred_at')();
  IntColumn get intensityBefore => integer().named('intensity_before').nullable().check(
      const CustomExpression<bool>(
          "intensity_before IS NULL OR intensity_before BETWEEN 0 AND 10"))();
  IntColumn get intensityAfter => integer().named('intensity_after').nullable().check(
      const CustomExpression<bool>(
          "intensity_after IS NULL OR intensity_after BETWEEN 0 AND 10"))();
  IntColumn get durationSeconds => integer().named('duration_seconds').nullable().check(
      const CustomExpression<bool>(
          "duration_seconds IS NULL OR duration_seconds >= 0"))();
  TextColumn get bodyLocationJson => text().named('body_location_json').nullable()();
  BoolColumn get passed => boolean()();
  TextColumn get methodUsed => text().named('method_used').nullable().check(
      const CustomExpression<bool>(
          "method_used IS NULL OR method_used IN ('cyclic_sighing','walk','water','social_contact','if_then_action','other')"))();

  @override
  Set<Column> get primaryKey => {id};
}

class RewardDeclarations extends Table {
  TextColumn get id => text()();
  TextColumn get phaseId => text()
      .named('phase_id')
      .customConstraint('REFERENCES phases(id) NOT NULL')();
  TextColumn get habitId => text()
      .named('habit_id')
      .customConstraint('REFERENCES habits(id) NOT NULL')();
  TextColumn get tier => text().check(
      const CustomExpression<bool>("tier IN ('T0','T1','T2','T3','T4')"))();
  TextColumn get milestoneRule => text().named('milestone_rule')();
  TextColumn get milestoneMachineRuleJson =>
      text().named('milestone_machine_rule_json').nullable()();
  TextColumn get rewardText => text().named('reward_text')();
  TextColumn get rewardMenuItemId => text()
      .named('reward_menu_item_id')
      .nullable()
      .customConstraint('NULL REFERENCES reward_menu_items(id)')();
  IntColumn get estimatedCostKrw => integer().named('estimated_cost_krw').nullable().check(
      const CustomExpression<bool>(
          "estimated_cost_krw IS NULL OR estimated_cost_krw >= 0"))();
  BoolColumn get isEffortTied => boolean().named('is_effort_tied').nullable()();
  TextColumn get declaredAt => text().named('declared_at')();

  @override
  Set<Column> get primaryKey => {id};
}

class RewardClaims extends Table {
  TextColumn get id => text()();
  TextColumn get declarationId => text()
      .named('declaration_id')
      .customConstraint('REFERENCES reward_declarations(id) NOT NULL')();
  TextColumn get milestoneReachedAt => text().named('milestone_reached_at')();
  BoolColumn get fulfilled => boolean()();
  TextColumn get fulfilledAt => text().named('fulfilled_at').nullable()();
  TextColumn get reflection => text().nullable().check(
      const CustomExpression<bool>(
          "reflection IS NULL OR length(reflection) <= 500"))();

  @override
  Set<Column> get primaryKey => {id};
}

class Reflections extends Table {
  TextColumn get id => text()();
  TextColumn get userId =>
      text().named('user_id').customConstraint('REFERENCES users(id) NOT NULL')();
  TextColumn get scope => text().check(const CustomExpression<bool>(
      "scope IN ('weekly','monthly','phase_end')"))();
  TextColumn get periodStart => text().named('period_start')();
  TextColumn get periodEnd => text().named('period_end')();
  TextColumn get phaseId => text()
      .named('phase_id')
      .nullable()
      .customConstraint('NULL REFERENCES phases(id) ON DELETE SET NULL')();
  TextColumn get kept => text().nullable()();
  TextColumn get missed => text().nullable()();
  TextColumn get adjust => text().nullable()();
  TextColumn get identityNote => text().named('identity_note').nullable()();
  RealColumn get minimumRatio => real().named('minimum_ratio').nullable().check(
      const CustomExpression<bool>(
          "minimum_ratio IS NULL OR (minimum_ratio BETWEEN 0 AND 1)"))();
  TextColumn get createdAt => text().named('created_at').nullable()();

  @override
  Set<Column> get primaryKey => {id};
}

class MetaKv extends Table {
  TextColumn get key => text()();
  TextColumn get value => text()();

  @override
  Set<Column> get primaryKey => {key};
}