Added BTC blockinfo

src/lib.rs

@@ -102,8 +102,34 @@ pub fn update_bsv_blockheight() {
         Err(err) => {
             println!("Err: {}", err);
         }
-    } 
+    }
+}
 
+pub fn update_btc_blockheight() {
+    let blockcypher_url = "https://api.blockcypher.com/v1/btc/main";
+    match reqwest::blocking::get(blockcypher_url) {
+        Ok(resp) => {
+            let json = resp.json::<HashMap<String, serde_json::Value>>();
+            match json {
+                Ok(json) => {
+                    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 = BTC_BI.write().unwrap();
+                        bi.latest_block_height = height;
+                        bi.latest_block_time = datetime;
+                    }
+                }
+                Err(err) => {
+                    println!("Err: {}", err);
+                }
+            }
+        }
+        Err(err) => {
+            println!("Err: {}", err);
+        }
+    }
 }
 
 #[cfg(test)]
@@ -111,6 +137,17 @@ mod tests {
     use super::*;
     use chrono::Duration;
 
+    #[test]
+    #[ignore]
+    fn get_latest_btc_blockinfo() {
+        let bi_a = *BTC_BI.read().unwrap();
+        update_btc_blockheight();
+        let bi_b = *BTC_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]
     #[ignore]
     fn get_latest_bsv_blockinfo() {