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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| import 'dart:async'; | ||
| import 'dart:convert'; | ||
| import 'package:web_socket_channel/web_socket_channel.dart'; | ||
| import 'package:web_socket_channel/status.dart' as status; | ||
| import 'package:orchid/api/orchid_crypto.dart'; | ||
| import 'package:orchid/api/orchid_eth/orchid_ticket.dart'; | ||
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| class ProviderConnection { | ||
| List<String> providers = []; | ||
| int _providerIndex = 0; | ||
| var _providerChannel; | ||
| Function onMessage; | ||
| Function onChat; | ||
| Function onConnect; | ||
| Function onError; | ||
| Function onDisconnect; | ||
| Function onSystemMessage; | ||
| Function onInternalMessage; | ||
| EthereumAddress contract; | ||
| BigInt signerKey; | ||
| EthereumAddress funder; | ||
| var _faceValue = BigInt.from(50000000000000000); | ||
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| ProviderConnection({required this.providers, required this.onMessage, required this.onConnect, | ||
| required this.onChat, required this.onDisconnect, required this.onError, | ||
| required this.onSystemMessage, required this.onInternalMessage, funder, signerKey, | ||
| required this.contract, }) | ||
| : this.funder = funder ?? '', | ||
| this.signerKey = signerKey ?? ''; | ||
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| void connectProvider() async { | ||
| if (_providerChannel != null) { | ||
| await _providerChannel.sink.close; | ||
| onDisconnect(); | ||
| _providerChannel = null; | ||
| } | ||
| var url = lookupProvider(); | ||
| var channel; | ||
| try { | ||
| channel = WebSocketChannel.connect(Uri.parse(url)); | ||
| channel.ready; | ||
| } catch (e) { | ||
| onError('Failed on provider connection: $e'); | ||
| return; | ||
| } | ||
| _providerChannel = channel; | ||
| _providerChannel.stream.listen( | ||
| receiveProviderMessage, | ||
| onDone: onDisconnect, | ||
| onError: (error) { onError('ws error: $error'); }, | ||
| ); | ||
| onConnect(); | ||
| } | ||
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| String lookupProvider() { | ||
| if (providers.length > 0) { | ||
| _providerIndex = (_providerIndex + 1) % providers.length; | ||
| return providers[_providerIndex]; | ||
| } | ||
| return ''; | ||
| } | ||
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| void payInvoice(Map<String, dynamic> invoice) { | ||
| var payment; | ||
| final data = BigInt.zero; | ||
| final due = invoice['amount']; | ||
| final lotaddr = contract; | ||
| final token = EthereumAddress.zero; | ||
| final ratio = BigInt.parse('9223372036854775808'); | ||
| final commit = BigInt.parse(invoice['commit'] ?? '0x0'); | ||
| final recipient = invoice['recipient'] ?? '0x0'; | ||
| final ticket = OrchidTicket( | ||
| data: data, | ||
| lotaddr: lotaddr, | ||
| token: token, | ||
| amount: _faceValue, | ||
| ratio: ratio, | ||
| funder: funder, | ||
| recipient: EthereumAddress.from(recipient), | ||
| commitment: commit, | ||
| privateKey: signerKey, | ||
| millisecondsSinceEpoch: 1708638722494, | ||
| ); | ||
| ticket.printTicket(); | ||
| payment = '{"type": "payment", "tickets": ["${ticket.serializeTicket()}"]}'; | ||
| onInternalMessage('Client: $payment'); | ||
| sendProviderMessage(payment); | ||
| } | ||
|
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| void receiveProviderMessage(message) { | ||
| final data = jsonDecode(message) as Map<String, dynamic>; | ||
|
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| print(message); | ||
| onMessage('Provider: $message'); | ||
|
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| switch (data['type']) { | ||
| case 'job_complete': | ||
| onChat(data['output'], data); | ||
| case 'invoice': | ||
| payInvoice(data); | ||
| case 'bid_low': | ||
| onSystemMessage("Bid below provider's reserve price."); | ||
| } | ||
| } | ||
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| void sendProviderMessage(message) { | ||
| print('Sending message to provider $message'); | ||
| _providerChannel.sink.add(message); | ||
| } | ||
| } |