thesimplekid/cashcrab

Cashu mobile wallet with nostr contacts and direct messaging

Warning This project is in early development, it does however work with real sats! Always use amounts you don't mind losing.

cashcrab

A Cashu wallet with a flutter UI and with as much logic as possible in rust using cashu-crab with nostr integration for contacts and messaging.

Flutter Rust Bridge

Generate Dart from rust

flutter_rust_bridge_codegen --rust-input ./src/api.rs --dart-output ../lib/bridge_generated.dart --c-output ../ios/Runner/bridge_generated.h --dart-decl-output ../lib/bridge_definitions.dart

Credit

Thanks to calle for the name.

Flutter Rust Example: https://github.com/sccheruku/flutter_rust_example

cashcrab's Issues

receive_token error

Thank you for working on this project, it has been very inspiring for my own project. However, I have encountered some issues.

If try to execute receive_token function twice, always get an error.

My code

    let encoded_token: &str = "cashuAeyJ0b2tlbiI6W3sicHJvb2ZzIjpbeyJpZCI6IkkyeU4raVJZZmt6VCIsImFtb3VudCI6MSwiQyI6IjAzOGFjZDI2ZGExZTFlYzc0M2E4NmIxNTkwM2FiYjIyNzdjNDAwMDlkZDM2ZGMxZGJhOGQ0MjM5MWE2YjcyMmEwYSIsInNlY3JldCI6IlNXa0lnbDNIYXhOTUcxL1REbk9qazVqVEI1cVc0MzRYV1ZldUE2cmNSb1E9In1dLCJtaW50IjoiaHR0cHM6Ly84MzMzLnNwYWNlOjMzMzgifV19";
    let r6 = api::receive_token(encoded_token.to_string());
    let r6 = api::receive_token(encoded_token.to_string());

thread 'main' panicked at 'called `Option::unwrap()` on a `None` value', /Users/liuxing/.cargo/git/checkouts/cashu-crab-236eaaf426c3a3cb/eb31150/src/wallet.rs:121:40
stack backtrace:
   0: rust_begin_unwind
             at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library/std/src/panicking.rs:593:5
   1: core::panicking::panic_fmt
             at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library/core/src/panicking.rs:67:14
   2: core::panicking::panic
             at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library/core/src/panicking.rs:117:5
   3: core::option::Option<T>::unwrap
             at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library/core/src/option.rs:935:21
   4: cashu_crab::wallet::Wallet::receive::{{closure}}
             at /Users/liuxing/.cargo/git/checkouts/cashu-crab-236eaaf426c3a3cb/eb31150/src/wallet.rs:121:21
   5: rust::cashu::receive_token::{{closure}}

Flutter ffi call

In the Flutter project, the process gets stuck and the cannot get lock. Any function call results in an error.

FfiException (FfiException(RESULT_ERROR, Failed to lock the runtime mutex: poisoned lock: another task failed inside, null))