Add storage-subxt crate with static codegen runtime bindings

Cargo.toml

@@ -3,6 +3,7 @@ resolver = "2"
 members = [
 	# Layer 0: Scalable Web3 Storage
 	"client",
+	"crates/storage-subxt",
 	"pallet",
 	"primitives",
 	"provider-node",
@@ -43,6 +44,7 @@ storage-client = { path = "client" }
 storage-parachain-runtime = { path = "runtimes/web3-storage-local" }
 storage-primitives = { path = "primitives", default-features = false }
 storage-provider-node = { path = "provider-node" }
+storage-subxt = { path = "crates/storage-subxt" }
 
 # Storage Interfaces: File System Interface
 file-system-client = { path = "storage-interfaces/file-system/client" }
@@ -166,6 +168,7 @@ rand = "0.8"
 
 # Subxt (chain interaction for off-chain clients)
 subxt = { version = "0.44.3" }
+subxt-core = { version = "0.44.3", default-features = false }
 subxt-signer = { version = "0.44.3", features = ["sr25519"] }
 
 # Testing

crates/storage-subxt/Cargo.toml

@@ -0,0 +1,32 @@
+[package]
+name = "storage-subxt"
+description = "Rust bindings and interface to interact with Web3 Storage using subxt"
+version = "0.1.0"
+authors.workspace = true
+edition.workspace = true
+license = "Apache-2.0"
+repository.workspace = true
+exclude = ["./metadata"]
+readme = "README.md"
+
+
+[dependencies]
+codec = { workspace = true }
+scale-info = { workspace = true }
+subxt = { workspace = true, features = ["jsonrpsee"], optional = true }
+subxt-signer = { workspace = true, features = ["ecdsa", "sr25519", "subxt"] }
+serde = { workspace = true, features = ["derive"] }
+subxt-core = { workspace = true }
+
+[features]
+default = ["std"]
+std = [
+	"codec/std",
+	"dep:subxt",
+	"scale-info/std",
+	"serde/std",
+	"subxt-core/std",
+	"subxt-signer/std",
+	"subxt/jsonrpsee",
+	"subxt/native",
+]

crates/storage-subxt/README.md

@@ -0,0 +1,43 @@
+# Web3-Storage-Subxt
+
+### Downloading metadata from a Substrate node
+
+Use the [`subxt-cli`](https://crates.io/crates/subxt-cli) tool to download the metadata for your target runtime from a node.
+
+1. Install:
+
+```bash
+cargo install subxt-cli@0.44.3 --force --locked
+```
+
+2. To Save the metadata of runtime:
+    Run the release build of the web3-storage runtime:
+    ```rust
+    just start-paseo-chain
+    ```
+
+    Then on another terminal run:
+    ```bash
+    subxt metadata -f bytes --url ws://localhost:2222 > ./metadata/storage_paseo_runtime.scale
+    ```
+
+3. Generating the subxt code from the metadata:
+
+```bash
+subxt codegen --file ./metadata/storage_paseo_runtime.scale \
+    --crate "::subxt_core" \
+    --derive Clone \
+    --derive Eq \
+    --derive PartialEq \
+    --derive-for-type "pallet_storage_provider::pallet::ProviderInfo=serde::Serialize" \
+    --derive-for-type "pallet_storage_provider::pallet::ProviderInfo=serde::Deserialize" \
+    --derive-for-type "pallet_storage_provider::pallet::ProviderSettings=serde::Serialize" \
+    --derive-for-type "pallet_storage_provider::pallet::ProviderSettings=serde::Deserialize" \
+    --derive-for-type "pallet_storage_provider::pallet::ProviderStats=serde::Serialize" \
+    --derive-for-type "pallet_storage_provider::pallet::ProviderStats=serde::Deserialize" \
+    --derive-for-type "bounded_collections::bounded_vec::BoundedVec=serde::Serialize" \
+    --derive-for-type "bounded_collections::bounded_vec::BoundedVec=serde::Deserialize" \
+    --derive-for-type "sp_runtime::MultiSignature=codec::Encode" \
+    --derive-for-type "sp_runtime::MultiSignature=codec::Decode" \
+    | rustfmt --edition=2021 --emit=stdout > ./src/storage_paseo_runtime.rs
+```

crates/storage-subxt/metadata/storage_mainnet_runtime.scale

@@ -0,0 +1 @@
+// TODO: resolve mainnet scale

crates/storage-subxt/src/lib.rs

@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: Apache-2.0
+
+#![deny(
+    stable_features,
+    non_shorthand_field_patterns,
+    renamed_and_removed_lints,
+    unsafe_code
+)]
+
+pub use codec;
+pub use scale_info;
+#[cfg(feature = "std")]
+pub use subxt;
+#[cfg(feature = "std")]
+pub use subxt::ext::subxt_core;
+#[cfg(not(feature = "std"))]
+pub use subxt_core;
+pub use subxt_signer;
+
+#[rustfmt::skip]
+pub mod storage_paseo_runtime;
+pub use storage_paseo_runtime::*;