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| 1 | +import 'dart:convert'; |
| 2 | +import 'src/exception.dart'; |
| 3 | + |
| 4 | +class Payload { |
| 5 | + late final String? path; |
| 6 | + late final List<int>? data; |
| 7 | + final String? filename; |
| 8 | + |
| 9 | + Payload._({this.path, this.filename, this.data}) { |
| 10 | + if (path == null && data == null) { |
| 11 | + throw AppwriteException('One of `path` or `data` is required'); |
| 12 | + } |
| 13 | + } |
| 14 | + |
| 15 | + /// Convert to binary, with optional offset and length |
| 16 | + List<int> toBinary({int offset = 0, int? length}) { |
| 17 | + if(data == null) { |
| 18 | + throw AppwriteException('`data` is not defined.'); |
| 19 | + } |
| 20 | + if(offset == 0 && length == null) { |
| 21 | + return data!; |
| 22 | + } else if (length == null) { |
| 23 | + return data!.sublist(offset); |
| 24 | + } else { |
| 25 | + return data!.sublist(offset, offset + length); |
| 26 | + } |
| 27 | + } |
| 28 | + |
| 29 | + /// Convert binary data to string (utf8) |
| 30 | + @override |
| 31 | + String toString() { |
| 32 | + if(data == null) { |
| 33 | + return ''; |
| 34 | + } |
| 35 | + return utf8.decode(data!); |
| 36 | + } |
| 37 | + |
| 38 | + /// Convert binary data to JSON object |
| 39 | + Map<String, dynamic> toJson() { |
| 40 | + try { |
| 41 | + return jsonDecode(toString()); // Decode the string to JSON |
| 42 | + } catch (e) { |
| 43 | + throw FormatException('Failed to parse JSON: ${e.toString()}'); |
| 44 | + } |
| 45 | + } |
| 46 | + |
| 47 | + /// Create a Payload from binary data |
| 48 | + factory Payload.fromBinary({ |
| 49 | + required List<int> data, |
| 50 | + String? filename, |
| 51 | + }) { |
| 52 | + return Payload._(data: data, filename: filename); |
| 53 | + } |
| 54 | + |
| 55 | + /// Create a Payload from a file |
| 56 | + factory Payload.fromFile({required String path, String? filename}) { |
| 57 | + return Payload._(path: path, filename: filename); |
| 58 | + } |
| 59 | + |
| 60 | + /// Create a Payload from a JSON object |
| 61 | + factory Payload.fromJson({ |
| 62 | + required Map<String, dynamic> data, |
| 63 | + String? filename, |
| 64 | + }) { |
| 65 | + final jsonString = jsonEncode(data); |
| 66 | + return Payload.fromString(string: jsonString, filename: filename); |
| 67 | + } |
| 68 | + |
| 69 | + /// Create a Payload from a string |
| 70 | + factory Payload.fromString({required String string, String? filename}) { |
| 71 | + final data = utf8.encode(string); |
| 72 | + return Payload._(data: data, filename: filename); |
| 73 | + } |
| 74 | +} |
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