import 'package:brick_offline_first_with_supabase/brick_offline_first_with_supabase.dart';
import 'package:brick_sqlite/brick_sqlite.dart';
import 'package:brick_supabase/brick_supabase.dart';

import '../utils/app_time.dart';

/// Work categories for a programmer task. Values are the TitleCase display
/// strings stored directly in the `programmer_task_category` Postgres enum
/// (same convention as the IT-support request_type / request_category enums).
class ProgrammerTaskCategory {
  static const softwareSupport = 'Software Support';
  static const softwareDevelopment = 'Software Development';
  static const softwareEnhancement = 'Software Enhancement';
  static const bugFix = 'Bug Fix';
  static const meeting = 'Meeting';
  static const facilitateEvent = 'Facilitate Event';
  static const others = 'Others';

  static const all = [
    softwareSupport,
    softwareDevelopment,
    softwareEnhancement,
    bugFix,
    meeting,
    facilitateEvent,
    others,
  ];

  /// Enum values already read as display labels, but this keeps the call site
  /// symmetric with other models and guards unknown values.
  static String label(String category) =>
      all.contains(category) ? category : category;
}

/// Status lifecycle for a programmer task.
///
/// `queued -> in_progress -> completed | cancelled`. Pause/resume are recorded
/// as activity-log events (not statuses): a paused task keeps `inProgress`.
class ProgrammerTaskStatus {
  static const queued = 'queued';
  static const inProgress = 'in_progress';
  static const completed = 'completed';
  static const cancelled = 'cancelled';

  static const all = [queued, inProgress, completed, cancelled];

  static const terminal = [completed, cancelled];

  static String label(String status) {
    switch (status) {
      case queued:
        return 'Queued';
      case inProgress:
        return 'In Progress';
      case completed:
        return 'Completed';
      case cancelled:
        return 'Cancelled';
      default:
        return status;
    }
  }
}

@ConnectOfflineFirstWithSupabase(
  supabaseConfig: SupabaseSerializable(tableName: 'programmer_tasks'),
)
class ProgrammerTask extends OfflineFirstWithSupabaseModel {
  final String id;
  final String title;
  final String? description;
  final String category;
  final String status;
  final int priority;
  final String? assigneeId;
  final String? creatorId;
  final String? projectId;
  final DateTime createdAt;
  final DateTime? startedAt;
  final DateTime? completedAt;
  final DateTime? cancelledAt;
  final String? cancellationReason;
  final DateTime updatedAt;

  ProgrammerTask({
    required this.id,
    required this.title,
    this.description,
    required this.category,
    required this.status,
    this.priority = 1,
    this.assigneeId,
    this.creatorId,
    this.projectId,
    required this.createdAt,
    this.startedAt,
    this.completedAt,
    this.cancelledAt,
    this.cancellationReason,
    required this.updatedAt,
  });

  bool get isTerminal => ProgrammerTaskStatus.terminal.contains(status);

  @Supabase(ignore: true)
  @Sqlite(ignore: true)
  @override
  bool operator ==(Object other) =>
      identical(this, other) ||
      other is ProgrammerTask &&
          runtimeType == other.runtimeType &&
          id == other.id &&
          status == other.status &&
          updatedAt == other.updatedAt;

  @Supabase(ignore: true)
  @Sqlite(ignore: true)
  @override
  int get hashCode => Object.hash(id, status, updatedAt);

  factory ProgrammerTask.fromMap(Map<String, dynamic> map) {
    return ProgrammerTask(
      id: map['id'].toString(),
      title: map['title'] as String? ?? '',
      description: map['description'] as String?,
      category: map['category'] as String? ?? ProgrammerTaskCategory.others,
      status: map['status'] as String? ?? ProgrammerTaskStatus.queued,
      priority: (map['priority'] as num?)?.toInt() ?? 1,
      assigneeId: map['assignee_id']?.toString(),
      creatorId: map['creator_id']?.toString(),
      projectId: map['project_id']?.toString(),
      createdAt: AppTime.parse(map['created_at'] as String),
      startedAt: map['started_at'] == null
          ? null
          : AppTime.parse(map['started_at'] as String),
      completedAt: map['completed_at'] == null
          ? null
          : AppTime.parse(map['completed_at'] as String),
      cancelledAt: map['cancelled_at'] == null
          ? null
          : AppTime.parse(map['cancelled_at'] as String),
      cancellationReason: map['cancellation_reason'] as String?,
      updatedAt: map['updated_at'] == null
          ? AppTime.parse(map['created_at'] as String)
          : AppTime.parse(map['updated_at'] as String),
    );
  }
}