Add page to list the refundable HTLCs

analytics/index.js

@@ -8,6 +8,7 @@ import Debug from "debug";
 import { tick as tickArchethic } from "./src/archethic.js";
 import { tick as tickEVM } from "./src/evm.js";
 import htlcsController from "./src/controllers/htlcs.js";
+import refundsController from "./src/controllers/refunds.js";
 
 const debug = Debug("server");
 const ENDPOINT = config.get("archethic.endpoint");
@@ -33,6 +34,7 @@ app.set("views", "./src/views");
 app.set("view engine", "jade");
 
 app.get("/htlcs", htlcsController(db));
+app.get("/refunds", refundsController(db));
 
 app.get("/metrics", (req, res) => {
   let text = "";

analytics/src/controllers/refunds.js

@@ -0,0 +1,84 @@
+import { getHTLCs as getEVMHTLCs } from "../registry/evm-htlcs.js";
+import { getHTLCs as getArchethicHtlcs } from "../registry/archethic-htlcs.js";
+import { HTLC_STATUS } from "../archethic/get-htlc-statuses.js";
+import config from "config";
+
+const ARCHETHIC_ENDPOINT = config.get("archethic.endpoint");
+const EVM_NETWORKS = config.get("evm");
+
+export default function (db) {
+  return async (req, res) => {
+    const chargeableHTLCs = filterRefund(merge(
+      await getArchethicHtlcs(db, "chargeable"),
+      await getEVMHTLCs(db, "chargeable"),
+      "chargeable",
+    ));
+
+    const signedHTLCs = filterRefund(merge(
+      await getArchethicHtlcs(db, "signed"),
+      await getEVMHTLCs(db, "signed"),
+      "signed",
+    ));
+
+    const htlcs = [...chargeableHTLCs, ...signedHTLCs];
+
+    res.json(htlcs.map((htlc) => {
+      if (htlc.type == "chargeable") {
+        return { archethicAddress: htlc.address, claimingAmount: htlc.amount / 100_000_000 }
+      }
+      else {
+        return { evmAddress: htlc.evmHtlc.address, chain: htlc.evmHtlc.chain, claimingAmount: htlc.evmHtlc.amount }
+      }
+    }));
+  };
+}
+
+function merge(archethicHtlcs, evmHtlcs, type) {
+  // dump mumbai
+  archethicHtlcs = archethicHtlcs.filter((htlc) => htlc.evmChainID != 80001);
+
+  let evmHtlcsToDiscard = [];
+
+  // match HTLCs (best effort)
+  for (const archethicHtlc of archethicHtlcs) {
+    archethicHtlc.type = type;
+    if (archethicHtlc.evmContract) {
+      const match = evmHtlcs.find(
+        (evmHtlc) =>
+          evmHtlc.address.toLowerCase() ==
+          archethicHtlc.evmContract.toLowerCase(),
+      );
+      if (match != null) {
+        archethicHtlc.evmHtlc = match;
+        evmHtlcsToDiscard.push(archethicHtlc.evmHtlc.address);
+      }
+    } else {
+      // Try to match based on the locktime (2s tolerance)
+      const matches = evmHtlcs.filter(
+        (evmHtlc) => Math.abs(evmHtlc.lockTime - archethicHtlc.endTime) < 2,
+      );
+      if (matches.length == 1) {
+        archethicHtlc.evmHtlc = matches[0];
+        evmHtlcsToDiscard.push(archethicHtlc.evmHtlc.address);
+      }
+    }
+  }
+
+  // evm HTLCs with no match in archethic
+  for (const evmHtlc of evmHtlcs) {
+    if (evmHtlcsToDiscard.includes(evmHtlc.address)) continue;
+
+    archethicHtlcs.push({ evmHtlc: evmHtlc });
+  }
+  return archethicHtlcs;
+}
+
+function filterRefund(htlcs) {
+  return htlcs.filter((htlc) => {
+    if (!htlc.evmHtlc || !htlc.creationTime) {
+      return false
+    }
+
+    return (htlc.evmHtlc.status == "REFUNDED" && htlc.status != 2) || (htlc.status == 2 && htlc.evmHtlc.status != "REFUNDED")
+  })
+}