fix(swift-sdk): use platform-wallet-ffi headers instead of hardcoded function signatures

packages/rs-platform-wallet-ffi/Cargo.toml

@@ -18,14 +18,16 @@ once_cell = "1.19"
 parking_lot = { version = "0.12", features = ["send_guard"] }
 lazy_static = "1.4"
 
-# Core dependencies (for Network type)
-dashcore = { workspace = true }
 key-wallet = { workspace = true }
+key-wallet-ffi = { workspace = true }
 
 [dev-dependencies]
 tempfile = "3.8"
 dpp = { path = "../rs-dpp", features = ["fixtures-and-mocks"] }
 
+[build-dependencies]
+cbindgen = "0.27"
+
 [features]
 default = []
 mocks = []

packages/rs-platform-wallet-ffi/build.rs

@@ -0,0 +1,32 @@
+use std::path::Path;
+use std::{env, fs};
+
+fn main() {
+    let crate_name = env::var("CARGO_PKG_NAME").unwrap();
+    let crate_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
+    let out_dir = env::var("OUT_DIR").unwrap();
+
+    println!("cargo:rerun-if-changed=cbindgen.toml");
+    println!("cargo:rerun-if-changed=src/");
+
+    let target_dir = Path::new(&out_dir)
+        .ancestors()
+        .nth(3) // This line moves up to the target/<PROFILE> directory
+        .expect("Failed to find target dir");
+
+    let include_dir = target_dir.join("include").join(&crate_name);
+
+    fs::create_dir_all(&include_dir).unwrap();
+
+    let output_path = include_dir.join(format!("{}.h", &crate_name));
+
+    let config_path = Path::new(&crate_dir).join("cbindgen.toml");
+    let config = cbindgen::Config::from_file(&config_path).expect("Failed to read cbindgen.toml");
+
+    cbindgen::Builder::new()
+        .with_crate(&crate_dir)
+        .with_config(config)
+        .generate()
+        .expect("Unable to generate bindings")
+        .write_to_file(&output_path);
+}

packages/rs-platform-wallet-ffi/cbindgen.toml

@@ -8,7 +8,7 @@ include_version = true
 namespaces = []
 using_namespaces = []
 sys_includes = ["stdint.h", "stdbool.h"]
-includes = []
+includes = ["../key-wallet-ffi/key-wallet-ffi.h"]
 no_includes = false
 cpp_compat = true
 documentation = true
@@ -22,11 +22,6 @@ exclude = []
 prefix = ""
 item_types = ["enums", "structs", "unions", "typedefs", "opaque", "functions"]
 
-[export.rename]
-"Handle" = "platform_wallet_handle_t"
-"PlatformWalletFFIError" = "platform_wallet_error_t"
-"PlatformWalletFFIResult" = "platform_wallet_result_t"
-
 [fn]
 args = "horizontal"
 rename_args = "snake_case"