import 'dart:convert';

import 'package:analytics_sdk/const/event_type.dart';
import 'package:analytics_sdk/manager/sdk_context.dart';

/// SDK 初始化快照事件。
///
/// `sdk_init` 不携带 `device_env`，硬件与环境快照字段直接写入 payload。
class SdkInitEvent {
  final String event = EventType.sdkInit.event;
  late final String eventId;

  final Map<String, dynamic> payload;

  late final Map<String, dynamic> _commonFields;

  SdkInitEvent({required Map<String, dynamic> payload})
      : payload = Map<String, dynamic>.from(payload) {
    _commonFields = SdkContext.generateCommonFields(event);
    eventId = SdkContext.generateEventIdFromCommonFields(_commonFields, [
      jsonEncode(this.payload),
    ]);
  }

  Map<String, dynamic> toJson() {
    return {
      ..._commonFields,
      'event_id': eventId,
      'payload': payload,
    };
  }
}