From 640bace871595038d4d322ac831b03e10737660f Mon Sep 17 00:00:00 2001
From: Arthur Roberts <arfa.r@live.com>
Date: Sat, 13 Jul 2024 21:28:45 +0100
Subject: [PATCH] Added ETH

---
 src/lib.rs | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/src/lib.rs b/src/lib.rs
index d1f07cb..2ce549e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -67,6 +67,9 @@ pub fn time_to_blockheight(time: DateTime<Utc>, bi: BlockchainInfo) -> BlockHeig
     num_blocks + bi.latest_block_height
 }
 
+// I know there's code duplication... I _could_ abstract it out.
+// I think it's probably very YAGNI
+
 pub fn update_bsv_blockheight() {
     let whatsonchain_url = "https://api.whatsonchain.com/v1/bsv/main/block/headers";
     match ureq::get(whatsonchain_url).call() {
@@ -112,6 +115,26 @@ pub fn update_btc_blockheight() {
     }
 }
 
+pub fn update_eth_blockheight() {
+    let blockcypher_url = "https://api.blockcypher.com/v1/eth/main";
+    match ureq::get(blockcypher_url).call() {
+        Ok(resp) => {
+            let json: serde_json::Value = resp.into_json().unwrap();
+            let height = json.get("height").unwrap().as_i64().unwrap();
+            let time = json.get("time").unwrap().as_str().unwrap();
+            let datetime = time.parse::<DateTime<Utc>>().unwrap();
+            {
+                let mut bi = ETH_BI.write().unwrap();
+                bi.latest_block_height = height;
+                bi.latest_block_time = datetime;
+            }
+        }
+        Err(err) => {
+            println!("Err: {}", err);
+        }
+    }
+}
+
 
 // FIXME - use a different API. I think localmonero is going down soon
 pub fn update_xmr_blockheight() {
@@ -172,6 +195,17 @@ mod tests {
         assert!(bi_a.latest_block_time < bi_b.latest_block_time);
     }
 
+    #[test]
+    #[ignore]
+    fn get_latest_eth_blockinfo() {
+        let bi_a = *ETH_BI.read().unwrap();
+        update_eth_blockheight();
+        let bi_b = *ETH_BI.read().unwrap();
+        assert_ne!(bi_a, bi_b);
+        assert!(bi_a.latest_block_height < bi_b.latest_block_height);
+        assert!(bi_a.latest_block_time < bi_b.latest_block_time);
+    }
+
     #[test]
     fn one_block_time_away() {
         let latest_block_time = Utc.with_ymd_and_hms(2024, 10, 10, 10, 10, 0).unwrap();