import 'dart:convert';
import 'package:shared_preferences/shared_preferences.dart';
import '../about/internal/application/DeploymentRecord.dart';

/// Persists the deployment history so successes/failures can be tracked.
class DeploymentStore {
  static const _key = 'peach.deployments.v1';

  /// The key used before the app was renamed; migrated forward on first read.
  static const _legacyKey = 'jarpilot.deployments.v1';

  static const _max = 300;

  Future<List<DeploymentRecord>> load() async {
    final prefs = await SharedPreferences.getInstance();
    var raw = prefs.getString(_key);
    if (raw == null || raw.isEmpty) {
      raw = prefs.getString(_legacyKey);
      if (raw != null && raw.isNotEmpty) {
        await prefs.setString(_key, raw);
        await prefs.remove(_legacyKey);
      }
    }
    if (raw == null || raw.isEmpty) return [];
    final list = jsonDecode(raw) as List<dynamic>;
    final records = list
        .map((e) => DeploymentRecord.fromJson(e as Map<String, dynamic>))
        .toList();
    records.sort((a, b) => b.time.compareTo(a.time));
    return records;
  }

  Future<List<DeploymentRecord>> add(DeploymentRecord record) async {
    final records = await load();
    records.insert(0, record);
    if (records.length > _max) records.removeRange(_max, records.length);
    final prefs = await SharedPreferences.getInstance();
    await prefs.setString(
      _key,
      jsonEncode(records.map((r) => r.toJson()).toList()),
    );
    return records;
  }

  Future<void> clear() async {
    final prefs = await SharedPreferences.getInstance();
    await prefs.remove(_key);
  }
}