Commit 56b1e82

@@ -3,8 +3,103 @@ import 'dart:convert';
 import 'package:blood_pressure_app/model/blood_pressure.dart';
 import 'package:blood_pressure_app/model/export_import/legacy_column.dart';
 import 'package:blood_pressure_app/model/export_import/reocord_formatter.dart';
+import 'package:flutter/material.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 
+/// Converters for [BloodPressureRecord] attributes.
+class NativeColumn extends ExportColumn {
+  NativeColumn._create(this._csvTitle, this._restoreableType, this._encode, this._decode);
+  
+  final String _csvTitle;
+  final RowDataFieldType _restoreableType;
+  final String Function(BloodPressureRecord record) _encode;
+  final Object? Function(String pattern) _decode;
+  
+  static final NativeColumn timestamp = NativeColumn._create(
+    'timestampUnixMs',
+    RowDataFieldType.timestamp,
+    (record) => record.creationTime.millisecondsSinceEpoch.toString(),
+    (pattern) {
+      final value = int.tryParse(pattern);
+      return (value == null) ? null : DateTime.fromMillisecondsSinceEpoch(value);
+    }
+  );
+  static final NativeColumn systolic = NativeColumn._create(
+    'systolic',
+    RowDataFieldType.sys,
+    (record) => record.systolic.toString(),
+    (pattern) => int.tryParse(pattern)
+  );
+  static final NativeColumn diastolic = NativeColumn._create(
+    'diastolic',
+    RowDataFieldType.dia,
+    (record) => record.diastolic.toString(),
+    (pattern) => int.tryParse(pattern)
+  );
+  static final NativeColumn pulse = NativeColumn._create(
+    'notes',
+    RowDataFieldType.notes,
+    (record) => record.notes,
+    (pattern) => pattern
+  );
+  static final NativeColumn color = NativeColumn._create(
+    'color',
+    RowDataFieldType.needlePin,
+    (record) => record.needlePin?.color.value.toString() ?? '',
+    (pattern) {
+      final value = int.tryParse(pattern);
+      if (value == null) return null;
+      return MeasurementNeedlePin(Color(value));
+    }
+  );
+  static final NativeColumn needlePin = NativeColumn._create(
+      'needlePin',
+      RowDataFieldType.needlePin,
+      (record) => jsonEncode(record.needlePin?.toJson()),
+      (pattern) {
+        final json = jsonDecode(pattern);
+        if (json is! Map<String, dynamic>) return null;
+        try {
+          return MeasurementNeedlePin.fromJson(json);
+        } on FormatException {
+          return null;
+        }
+      }
+  );
+
+  @override
+  String get csvTitle => _csvTitle;
+
+  @override
+  (RowDataFieldType, Object)? decode(String pattern) {
+    final value = _decode(pattern);
+    if (value == null) return null;
+    return (_restoreableType, value);
+  }
+
+  @override
+  String encode(BloodPressureRecord record) => _encode(record);
+
+  @override
+  String? get formatPattern => null;
+
+  @override
+  String get internalIdentifier => 'buildin.$csvTitle';
+
+  @override
+  RowDataFieldType? get restoreAbleType => _restoreableType;
+
+  @override
+  String userTitle(AppLocalizations localizations) => _restoreableType.localize(localizations);
+
+
+}
+
+// TODO: add class for formattedTimestamp
+// TODO: keep pulsePressure option
+
+
+/// Interface for converters that allow formatting and provide metadata.
 sealed class ExportColumn implements Formatter {
   /// Unique internal identifier that is used to identify a column in the app.
   ///
@@ -25,20 +120,9 @@ sealed class ExportColumn implements Formatter {
   ///
   /// It will be displayed on the exported PDF file or in the column selection.
   String userTitle(AppLocalizations localizations);
-
-  static String serialize(ExportColumn column) {
-    int type = switch (column) {
-      UserColumn() => 1,
-    };
-    return jsonEncode({
-      't': type,
-      'id': column.internalIdentifier,
-      'csvTitle': column.csvTitle,
-      // TODO: class specific json data?
-    });
-  }
 }
 
+
 /// Class for storing export behavior of columns.
 ///
 /// In most cases using the sealed
@@ -73,4 +157,4 @@ class UserColumn extends ExportColumn {
 
   @override
   RowDataFieldType? get restoreAbleType => formatter.restoreAbleType;
-}
\ No newline at end of file
+}

@@ -82,7 +82,10 @@ class ExportColumn { // TODO: change this class so it implements the interface.
 
 /// Type a [ExportColumn] can be parsed as.
 enum RowDataFieldType {
-  timestamp, sys, dia, pul, notes, color;
+  timestamp, sys, dia, pul, notes,
+  @Deprecated('use needlePin instead')
+  color,
+  needlePin;
 
   String localize(AppLocalizations localizations) {
     switch(this) {
@@ -98,6 +101,8 @@ enum RowDataFieldType {
         return localizations.notes;
       case RowDataFieldType.color:
         return localizations.color;
+      case RowDataFieldType.needlePin:
+        return localizations.color;
     }
   }
 }
\ No newline at end of file

@@ -4,7 +4,7 @@ import 'dart:convert';
 import 'package:blood_pressure_app/model/export_import/column.dart';
 import 'package:flutter/material.dart';
 
-class ExportColumnsManager extends ChangeNotifier {
+class ExportColumnsManager extends ChangeNotifier { // TODO: separate ExportColumnsManager for export and import ?
   /// Create a new class for managing export columns.
   ///
   /// It will be filled with the default columns but won't contain initial user columns.
@@ -52,6 +52,8 @@ class ExportColumnsManager extends ChangeNotifier {
             'formatString': c.formatPattern
           });
           break;
+        case NativeColumn():
+          assert(false, 'User is currently not able to create native columns.');
       }
     }
     return jsonEncode({'userColumns': columns});

@@ -131,6 +131,8 @@ class ExportFileCreator {
               break;
             case RowDataFieldType.color:
               color ??= parsedRecordDataType.$2 as Color?;
+            case RowDataFieldType.needlePin:
+              color = (parsedRecordDataType.$2 as MeasurementNeedlePin?)?.color;
           }
         }
       }

@@ -13,6 +13,7 @@ class ExportFields {
   static const defaultPdf = ['formattedTimestamp','systolic','diastolic','pulse','notes']; 
 }
 
+@Deprecated('will get replaced with ExportColumnsManager')
 class ExportConfigurationModel {
   // 2 sources.
   static ExportConfigurationModel? _instance;