feat: adding rust client tutorial (#1582)

* feat: adding rust client tutorial

* Apply suggestions from code review

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

* fix: sidebar

---------

Co-authored-by: joshcs.eth <[email protected]>
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
Co-authored-by: jcstein <[email protected]>

.vitepress/config.ts

@@ -671,6 +671,10 @@ function sidebarHome() {
                   text: "Golang client tutorial",
                   link: "/developers/golang-client-tutorial",
                 },
+                {
+                  text: "Rust client tutorial",
+                  link: "/developers/rust-client-tutorial",
+                },
                 {
                   text: "Celestia-node RPC API documentation",
                   link: "https://node-rpc-docs.celestia.org/",

developers/golang-client-tutorial.md

@@ -1,10 +1,4 @@
----
-next:
-  text: "Prompt Scavenger"
-  link: "/developers/prompt-scavenger"
----
-
-# Golang client library guide {#golang-client-library}
+# Golang client library tutorial {#golang-client-library}
 
 This section tutorial will guide you through using the most common RPC endpoints with the golang client library.
 

developers/prompt-scavenger.md

@@ -1,8 +1,8 @@
 ---
 description: Learn how to interact with the Celestia Node API with this tutorial.
 prev:
-  text: "Golang client tutorial"
-  link: "/developers/golang-client-tutorial"
+  text: "Rust client tutorial"
+  link: "/developers/rust-client-tutorial"
 ---
 
 # Prompt scavenger

developers/rust-client-tutorial.md

@@ -0,0 +1,145 @@
+---
+next:
+  text: "Prompt Scavenger"
+  link: "/developers/prompt-scavenger"
+---
+
+# Rust client library tutorial {#rust-client-library}
+
+This section tutorial will guide you through using the most common RPC endpoints with [Lumina](https://github.com/eigerco/lumina/tree/main/rpc)'s rust client library.
+
+You will need to
+[setup dependencies, install, and run celestia-node](./node-tutorial.md#setting-up-dependencies)
+if you have not already.
+
+## Project setup
+
+To start, add `celestia_rpc` and `celestia_types` as a dependency to your project:
+
+```bash
+cargo add celestia_rpc celestia_types
+```
+
+To use the following methods, you will need the node URL and your auth token. To get your auth token, see this [guide](./node-tutorial.md#auth-token). To run your node without an auth token, you can use the `--rpc.skip-auth` flag when starting your node. This allows you to pass an empty string as your auth token.
+
+The default URL is `http://localhost:26658`. If you would like to use subscription methods, such as `SubscribeHeaders` below, you must use the `ws` protocol in place of `http`: `ws://localhost:26658`.
+
+## Submitting and retrieving blobs
+
+The [blob.Submit](https://node-rpc-docs.celestia.org/?version=v0.11.0#blob.Submit) method takes an array of blobs and a gas price, returning the height the blob was successfully posted at.
+
+- The namespace can be generated with `Namespace::new_v0`.
+- The blobs can be generated with `Blob::new`.
+- You can set `GasPrice::default()` as the gas price to have celestia-node automatically determine an appropriate gas price.
+
+The [blob.GetAll](https://node-rpc-docs.celestia.org/?version=v0.11.0#blob.GetAll) method takes a height and array of namespaces, returning the array of blobs found in the given namespaces.
+
+```rust
+use celestia_rpc::{BlobClient, Client, HeaderClient, ShareClient};
+use celestia_types::blob::GasPrice;
+use celestia_types::{nmt::Namespace, Blob, ExtendedDataSquare};
+
+async fn submit_blob(url: &str, token: &str) {
+    let client = Client::new(url, Some(token))
+        .await
+        .expect("Failed creating rpc client");
+
+    // let's use the DEADBEEF namespace
+    let namespace = Namespace::new_v0(&[0xDE, 0xAD, 0xBE, 0xEF]).expect("Invalid namespace");
+
+    // create a blob
+    let blob = Blob::new(namespace, b"Hello, World!".to_vec()).expect("Blob creation failed");
+
+    // submit the blob to the network
+    let height = client
+        .blob_submit(&[blob.clone()], GasPrice::default())
+        .await
+        .expect("Failed submitting blob");
+
+    println!("Blob was included at height {}", height);
+
+    // fetch the blob back from the network
+    let retrieved_blobs = client
+        .blob_get_all(height, &[namespace])
+        .await
+        .expect("Failed to retrieve blobs");
+
+    assert_eq!(retrieved_blobs.len(), 1);
+    assert_eq!(retrieved_blobs[0].data, b"Hello, World!");
+    assert_eq!(retrieved_blobs[0].commitment, blob.commitment);
+}
+```
+
+## Subscribing to new headers
+
+You can subscribe to new headers using the [header.Subscribe](https://node-rpc-docs.celestia.org/?version=v0.11.0#header.Subscribe) method. This method returns a `Subscription` that will receive new headers as they are produced. In this example, we will fetch all blobs at the height of the new header in the `0xDEADBEEF` namespace.
+
+```rust
+async fn subscribe_headers(url: &str, token: &str) {
+    let client = Client::new(url, Some(token))
+        .await
+        .expect("Failed creating rpc client");
+
+    let mut header_sub = client
+        .header_subscribe()
+        .await
+        .expect("Failed subscribing to incoming headers");
+
+    // setup the namespace we will filter blobs by
+    let namespace = Namespace::new_v0(&[0xDE, 0xAD, 0xBE, 0xEF]).expect("Invalid namespace");
+
+    while let Some(extended_header) = header_sub.next().await {
+        match extended_header {
+            Ok(header) => {
+                let height = header.header.height.value();
+                // fetch all blobs at the height of the new header
+
+                let blobs = match client.blob_get_all(height, &[namespace]).await {
+                    Ok(blobs) => blobs,
+                    Err(e) => {
+                        eprintln!("Error fetching blobs: {}", e);
+                        continue;
+                    }
+                };
+
+                println!(
+                    "Found {} blobs at height {} in the 0xDEADBEEF namespace",
+                    blobs.len(),
+                    height
+                );
+            }
+            Err(e) => {
+                eprintln!("Error receiving header: {}", e);
+            }
+        }
+    }
+}
+
+```
+
+## Fetching an Extended Data Square (EDS)
+
+You can fetch an [Extended Data Square (EDS)](https://celestiaorg.github.io/celestia-app/specs/data_structures.html#erasure-coding) using the [share.GetEDS](https://node-rpc-docs.celestia.org/?version=v0.11.0#share.GetEDS) method. This method takes a header and returns the EDS at the given height.
+
+```rust
+async fn get_eds(url: &str, token: &str) -> ExtendedDataSquare {
+    let client = Client::new(url, Some(token))
+        .await
+        .expect("Failed creating rpc client");
+
+    // first get the header of the block you want to fetch the EDS from
+    let latest_header = client
+        .header_local_head()
+        .await
+        .expect("Failed fetching header");
+
+    client
+        .share_get_eds(&latest_header)
+        .await
+        .expect("Failed to get EDS from latest header")
+}
+```
+
+## API documentation
+
+To see the full list of available methods, see the [API documentation](https://node-rpc-docs.celestia.org/?version=v0.11.0).