feat: add live Bitcoin Core status dashboard and JSON-RPC client

Cargo.toml

@@ -10,6 +10,9 @@ anyhow = "1.0.100"
 config = "0.15.19"
 crossterm = "0.29.0"
 ratatui = "0.29.0"
+tokio = { version = "1.49.0", features = ["full"] }
+reqwest = { version = "0.13.2", features = ["json"] }
+serde_json = "1.0.149"
 
 [dev-dependencies]
 insta = "1.44.3"

src/app.rs

@@ -3,11 +3,14 @@
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
 use crate::components::file_explorer::FileExplorer;
+use crate::components::metrics::BitcoinMetrics;
+use crate::config::BitcoinConfig;
 use std::path::PathBuf;
 
-#[derive(Debug, PartialEq, Eq)]
+#[derive(Debug, PartialEq, Eq, Clone, Copy)]
 pub enum CurrentScreen {
     Home,
+    BitcoinStatus,
     BitcoinConfig,
     FileExplorer,
     Exiting,
@@ -18,6 +21,8 @@ pub struct App {
     pub sidebar_index: usize,
     pub bitcoin_conf_path: Option<PathBuf>,
     pub explorer: FileExplorer,
+    pub bitcoin_config: Option<BitcoinConfig>,
+    pub bitcoin_metrics: Option<BitcoinMetrics>,
 }
 
 impl App {
@@ -27,6 +32,8 @@ impl App {
             sidebar_index: 0,
             bitcoin_conf_path: None,
             explorer: FileExplorer::new(),
+            bitcoin_config: None,
+            bitcoin_metrics: None,
         }
     }
 
@@ -35,6 +42,7 @@ impl App {
         match self.sidebar_index {
             0 => self.current_screen = CurrentScreen::Home,
             1 => self.current_screen = CurrentScreen::BitcoinConfig,
+            2 => self.current_screen = CurrentScreen::BitcoinStatus,
             _ => {}
         }
     }

src/components/metrics.rs

@@ -0,0 +1,69 @@
+// SPDX-FileCopyrightText: 2024 PDM Authors
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+use reqwest::Client;
+use serde_json::{Value, json};
+
+#[derive(Debug, Default, Clone, PartialEq)]
+pub struct BitcoinMetrics {
+    pub blocks: u64,
+    pub headers: u64,
+    pub connections: u32,
+    pub verification_progress: f64,
+    pub chain: String,
+}
+
+impl BitcoinMetrics {
+    /// Asynchronously fetches and parses metrics from a Bitcoin Core RPC node
+    pub async fn fetch(client: &Client, url: &str, user: &str, pass: &str) -> anyhow::Result<Self> {
+        //  Fetch Blockchain Info (Blocks, Headers, Sync Progress, Chain)
+        let body_chain = json!({
+            "jsonrpc": "1.0",
+            "id": "pdm",
+            "method": "getblockchaininfo",
+            "params": []
+        });
+
+        let res_chain = client
+            .post(url)
+            .basic_auth(user, Some(pass))
+            .json(&body_chain)
+            .send()
+            .await?
+            .json::<Value>()
+            .await?;
+
+        let result = &res_chain["result"];
+        let blocks = result["blocks"].as_u64().unwrap_or(0);
+        let headers = result["headers"].as_u64().unwrap_or(0);
+        let verification_progress = result["verificationprogress"].as_f64().unwrap_or(0.0);
+        let chain = result["chain"].as_str().unwrap_or("unknown").to_string();
+
+        //  Fetch Network Info (Peer Connections)
+        let body_net = json!({
+            "jsonrpc": "1.0",
+            "id": "pdm",
+            "method": "getnetworkinfo",
+            "params": []
+        });
+
+        let res_net = client
+            .post(url)
+            .basic_auth(user, Some(pass))
+            .json(&body_net)
+            .send()
+            .await?
+            .json::<Value>()
+            .await?;
+
+        let connections = res_net["result"]["connections"].as_u64().unwrap_or(0) as u32;
+
+        Ok(BitcoinMetrics {
+            blocks,
+            headers,
+            connections,
+            verification_progress,
+            chain,
+        })
+    }
+}

src/components/mod.rs

@@ -3,3 +3,4 @@
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
 pub mod file_explorer;
+pub mod metrics;