// MongoDB-oriented persistence contract helpers.
//
// This file defines stable names and conventions that future document mapping
// code should use. It deliberately does not serialize domain models or import a
// MongoDB client.

import 'time_contracts.dart';

/// DateTime storage convention for future document persistence.
abstract final class PersistenceDateTimeConvention {
  /// Human-readable convention kept close to the helper for tests and docs.
  static const description =
      'Store DateTime values as UTC ISO-8601 strings and compare as UTC instants.';

  /// Convert a DateTime into the persisted string convention.
  static String toStoredString(DateTime value) {
    return value.toUtc().toIso8601String();
  }

  /// Parse a persisted DateTime string back into a UTC DateTime.
  static DateTime fromStoredString(String value) {
    return DateTime.parse(value).toUtc();
  }

  /// Compare two DateTime values by their UTC instant.
  static int compare(DateTime left, DateTime right) {
    return left.toUtc().compareTo(right.toUtc());
  }
}

/// Civil-date storage convention for future document persistence.
abstract final class PersistenceCivilDateConvention {
  /// Human-readable convention kept close to the helper for tests and docs.
  static const description =
      'Store CivilDate values as YYYY-MM-DD strings without timezone conversion.';

  /// Convert a CivilDate into the persisted string convention.
  static String toStoredString(CivilDate value) {
    return value.toIsoString();
  }

  /// Parse a persisted CivilDate string without applying a timezone.
  static CivilDate fromStoredString(String value) {
    return CivilDate.fromIsoString(value);
  }
}

/// Wall-time storage convention for future document persistence.
abstract final class PersistenceWallTimeConvention {
  /// Human-readable convention kept close to the helper for tests and docs.
  static const description =
      'Store WallTime values as HH:MM strings without date or timezone data.';

  /// Convert a WallTime into the persisted string convention.
  static String toStoredString(WallTime value) {
    return value.toIsoString();
  }

  /// Parse a persisted WallTime string without applying a date or timezone.
  static WallTime fromStoredString(String value) {
    return WallTime.fromIsoString(value);
  }
}

/// Stable enum-name mapping plan for future document persistence.
extension PersistenceEnumName on Enum {
  /// Persist enum values by their Dart enum name.
  String get persistenceName => name;
}

/// Shared MongoDB document field names.
abstract final class DocumentFields {
  /// MongoDB primary id field.
  static const id = '_id';
}

/// Document field names for [Task] documents.
abstract final class TaskDocumentFields {
  static const id = DocumentFields.id;
  static const title = 'title';
  static const projectId = 'projectId';
  static const type = 'type';
  static const status = 'status';
  static const priority = 'priority';
  static const reward = 'reward';
  static const difficulty = 'difficulty';
  static const durationMinutes = 'durationMinutes';
  static const scheduledStart = 'scheduledStart';
  static const scheduledEnd = 'scheduledEnd';
  static const actualStart = 'actualStart';
  static const actualEnd = 'actualEnd';
  static const parentTaskId = 'parentTaskId';
  static const backlogTags = 'backlogTags';
  static const reminderOverride = 'reminderOverride';
  static const createdAt = 'createdAt';
  static const updatedAt = 'updatedAt';
  static const stats = 'stats';

  static const all = <String>{
    id,
    title,
    projectId,
    type,
    status,
    priority,
    reward,
    difficulty,
    durationMinutes,
    scheduledStart,
    scheduledEnd,
    actualStart,
    actualEnd,
    parentTaskId,
    backlogTags,
    reminderOverride,
    createdAt,
    updatedAt,
    stats,
  };
}

/// Document field names for [TaskStatistics] embedded documents.
abstract final class TaskStatisticsDocumentFields {
  static const skippedDuringBurnoutCount = 'skippedDuringBurnoutCount';
  static const manuallyPushedCount = 'manuallyPushedCount';
  static const autoPushedCount = 'autoPushedCount';
  static const movedToBacklogCount = 'movedToBacklogCount';
  static const restoredFromBacklogCount = 'restoredFromBacklogCount';
  static const missedCount = 'missedCount';
  static const cancelledCount = 'cancelledCount';
  static const completedLateCount = 'completedLateCount';
  static const completedDuringLockedHoursCount =
      'completedDuringLockedHoursCount';
  static const completedDuringLockedHoursMinutes =
      'completedDuringLockedHoursMinutes';

  static const all = <String>{
    skippedDuringBurnoutCount,
    manuallyPushedCount,
    autoPushedCount,
    movedToBacklogCount,
    restoredFromBacklogCount,
    missedCount,
    cancelledCount,
    completedLateCount,
    completedDuringLockedHoursCount,
    completedDuringLockedHoursMinutes,
  };
}

/// Document field names for [ProjectProfile] documents.
abstract final class ProjectDocumentFields {
  static const id = DocumentFields.id;
  static const name = 'name';
  static const colorKey = 'colorKey';
  static const defaultPriority = 'defaultPriority';
  static const defaultReward = 'defaultReward';
  static const defaultDifficulty = 'defaultDifficulty';
  static const defaultReminderProfile = 'defaultReminderProfile';
  static const defaultDurationMinutes = 'defaultDurationMinutes';

  static const all = <String>{
    id,
    name,
    colorKey,
    defaultPriority,
    defaultReward,
    defaultDifficulty,
    defaultReminderProfile,
    defaultDurationMinutes,
  };
}

/// Document field names for [ClockTime] embedded documents.
abstract final class ClockTimeDocumentFields {
  static const hour = 'hour';
  static const minute = 'minute';

  static const all = <String>{
    hour,
    minute,
  };
}

/// Document field names for [LockedBlockRecurrence] embedded documents.
abstract final class LockedBlockRecurrenceDocumentFields {
  static const weekdays = 'weekdays';

  static const all = <String>{
    weekdays,
  };
}

/// Document field names for [LockedBlock] documents.
abstract final class LockedBlockDocumentFields {
  static const id = DocumentFields.id;
  static const name = 'name';
  static const startTime = 'startTime';
  static const endTime = 'endTime';
  static const date = 'date';
  static const recurrence = 'recurrence';
  static const hiddenByDefault = 'hiddenByDefault';
  static const projectId = 'projectId';
  static const createdAt = 'createdAt';
  static const updatedAt = 'updatedAt';

  static const all = <String>{
    id,
    name,
    startTime,
    endTime,
    date,
    recurrence,
    hiddenByDefault,
    projectId,
    createdAt,
    updatedAt,
  };
}

/// Document field names for [LockedBlockOverride] documents.
abstract final class LockedBlockOverrideDocumentFields {
  static const id = DocumentFields.id;
  static const lockedBlockId = 'lockedBlockId';
  static const date = 'date';
  static const type = 'type';
  static const name = 'name';
  static const startTime = 'startTime';
  static const endTime = 'endTime';
  static const hiddenByDefault = 'hiddenByDefault';
  static const projectId = 'projectId';
  static const createdAt = 'createdAt';
  static const updatedAt = 'updatedAt';

  static const all = <String>{
    id,
    lockedBlockId,
    date,
    type,
    name,
    startTime,
    endTime,
    hiddenByDefault,
    projectId,
    createdAt,
    updatedAt,
  };
}

/// Document field names for [SchedulingStateSnapshot] documents.
abstract final class SchedulingSnapshotDocumentFields {
  static const id = DocumentFields.id;
  static const capturedAt = 'capturedAt';
  static const window = 'window';
  static const tasks = 'tasks';
  static const lockedIntervals = 'lockedIntervals';
  static const requiredVisibleIntervals = 'requiredVisibleIntervals';
  static const notices = 'notices';
  static const changes = 'changes';
  static const overlaps = 'overlaps';
  static const operationName = 'operationName';

  static const all = <String>{
    id,
    capturedAt,
    window,
    tasks,
    lockedIntervals,
    requiredVisibleIntervals,
    notices,
    changes,
    overlaps,
    operationName,
  };
}

/// Document field names for [SchedulingWindow] embedded documents.
abstract final class SchedulingWindowDocumentFields {
  static const start = 'start';
  static const end = 'end';

  static const all = <String>{
    start,
    end,
  };
}

/// Document field names for [TimeInterval] embedded documents.
abstract final class TimeIntervalDocumentFields {
  static const start = 'start';
  static const end = 'end';
  static const label = 'label';

  static const all = <String>{
    start,
    end,
    label,
  };
}

/// Document field names for [SchedulingNotice] embedded documents.
abstract final class SchedulingNoticeDocumentFields {
  static const message = 'message';
  static const type = 'type';
  static const taskId = 'taskId';

  static const all = <String>{
    message,
    type,
    taskId,
  };
}

/// Document field names for [SchedulingChange] embedded documents.
abstract final class SchedulingChangeDocumentFields {
  static const taskId = 'taskId';
  static const previousStart = 'previousStart';
  static const previousEnd = 'previousEnd';
  static const nextStart = 'nextStart';
  static const nextEnd = 'nextEnd';

  static const all = <String>{
    taskId,
    previousStart,
    previousEnd,
    nextStart,
    nextEnd,
  };
}

/// Document field names for [SchedulingOverlap] embedded documents.
abstract final class SchedulingOverlapDocumentFields {
  static const taskId = 'taskId';
  static const taskInterval = 'taskInterval';
  static const blockedInterval = 'blockedInterval';

  static const all = <String>{
    taskId,
    taskInterval,
    blockedInterval,
  };
}

/// Every field-name set currently committed for future document mapping.
abstract final class PersistenceDocumentFieldSets {
  static const all = <Set<String>>[
    TaskDocumentFields.all,
    TaskStatisticsDocumentFields.all,
    ProjectDocumentFields.all,
    ClockTimeDocumentFields.all,
    LockedBlockRecurrenceDocumentFields.all,
    LockedBlockDocumentFields.all,
    LockedBlockOverrideDocumentFields.all,
    SchedulingSnapshotDocumentFields.all,
    SchedulingWindowDocumentFields.all,
    TimeIntervalDocumentFields.all,
    SchedulingNoticeDocumentFields.all,
    SchedulingChangeDocumentFields.all,
    SchedulingOverlapDocumentFields.all,
  ];
}