Fixing issue with indexing

dev-docs/psf-memo-db.md

@@ -81,6 +81,29 @@ All routes are under `/level` with a consistent CRUD pattern generated from `ENT
 | `processerror` | `txid` | `errorData` | txid |
 | `ptx` | `txid` | `ptxData` | txid |
 
+### Read routes (query use cases)
+
+| Method | Path | Query params |
+|--------|------|----------------|
+| `GET` | `/profile/recent` | `limit` (default 100, max 100), `offset` (default 0) |
+
+Returns profiles sorted by **block height** (newest first), using each profile’s `txid` to look up `blockHeight` in `ptxs`. Tie-breaker: `seen` timestamp descending.
+
+Response shape:
+
+```json
+{
+  "profiles": [
+    { "addr": "bitcoincash:q...", "text": "...", "txid": "...", "seen": 123, "blockHeight": 600000 }
+  ],
+  "pagination": { "limit": 100, "offset": 0, "total": 42, "hasMore": false }
+}
+```
+
+Implementation: `profile-query` adapter (LevelDB scan) → `list-recent-profiles` use case → `/profile` REST controller.
+
+**Tradeoff:** Full scan of `profiles` on each request; suitable for moderate corpus sizes. A height-indexed store would be needed for very large archives.
+
 ### Status (special case)
 
 Matches SLP status semantics:

src/lib/memo-parser.js

@@ -111,19 +111,61 @@ export function findMemoOutputs (txDetails) {
   return matches
 }
 
+/**
+ * Extract compressed or uncompressed pubkey from a P2PKH unlocking script.
+ * Mirrors Go wallet.GetP2pkhAddrFromUnlockScript (pubkey push after signature).
+ */
+export function getPubkeyFromUnlockScript (scriptBuf) {
+  if (!scriptBuf || !scriptBuf.length) return null
+
+  let decoded
+  try {
+    decoded = getBchjs().Script.decode(scriptBuf)
+  } catch (err) {
+    return null
+  }
+
+  if (!decoded || !decoded.length) return null
+
+  for (let i = decoded.length - 1; i >= 0; i--) {
+    const chunk = decoded[i]
+    if (Buffer.isBuffer(chunk) && (chunk.length === 33 || chunk.length === 65)) {
+      return chunk
+    }
+  }
+
+  return null
+}
+
+/**
+ * Derive cash address from unlocking script hex (P2PKH spend).
+ */
+export function getAddressFromUnlockScriptHex (scriptHex) {
+  if (!scriptHex || typeof scriptHex !== 'string') return null
+
+  try {
+    const scriptBuf = Buffer.from(scriptHex, 'hex')
+    const pubkey = getPubkeyFromUnlockScript(scriptBuf)
+    if (!pubkey) return null
+
+    const hash160 = getBchjs().Crypto.hash160(pubkey)
+    return getBchjs().Address.hash160ToCash(hash160)
+  } catch (err) {
+    return null
+  }
+}
+
 export function getSignerAddress (txDetails) {
   if (!txDetails || !txDetails.vin) return null
 
   for (const vin of txDetails.vin) {
-    if (!vin.scriptSig || !vin.scriptSig.hex) continue
-    try {
-      const scriptBuf = Buffer.from(vin.scriptSig.hex, 'hex')
-      const addr = getBchjs().Script.getAddressFromScriptSig(scriptBuf)
-      if (addr) return addr
-    } catch (err) {
-      continue
-    }
+    const scriptHex = vin.scriptSig && vin.scriptSig.hex
+    if (!scriptHex) continue
+
+    const addr = getAddressFromUnlockScriptHex(scriptHex)
+    if (addr) return addr
   }
+
   return null
 }
 

test/unit/lib/memo-parser.unit.js

@@ -2,7 +2,9 @@ import { assert } from 'chai'
 import {
   decodeMemoOpReturn,
   parseScriptPushDatas,
-  isMemoScript
+  isMemoScript,
+  getSignerAddress,
+  getAddressFromUnlockScriptHex
 } from '../../../src/lib/memo-parser.js'
 import { CODE_POST, CODE_PREFIX } from '../../../src/lib/memo-codes.js'
 
@@ -38,4 +40,49 @@ describe('#memo-parser', () => {
       assert.equal(isMemoScript(POST_OP_RETURN_HEX), true)
     })
   })
+
+  describe('#getAddressFromUnlockScriptHex', () => {
+    const SCRIPT_SIG_1 =
+      '483045022100e15e18048b78e744fe8e440eb2687b5d4eb7009140d5e71950d4351c6e3bf2ef022031b0dab7326846a58e16f6a753e0d011514f827d2adacde63912daa3f85636c5412103833927b98fab40d5f857214d802ba42ea21087105b81e9bff57bf2486c9ff171'
+    const SCRIPT_SIG_2 =
+      '483045022100aa35ee315859b63f92e7878304364635943b28b2334dfd796a51cb2e0b284fe3022033e852b7c965f36c7d6eecc577b01218d611450c80e75af1fd41e76cfc7af81c4121035c5970c98aa4543271348bb18de4fb04122af87555fc4411c376493cc85594c3'
+
+    it('should derive cash address from real memo tx scriptSig', () => {
+      const addr = getAddressFromUnlockScriptHex(SCRIPT_SIG_1)
+      assert.isString(addr)
+      assert.include(addr, 'bitcoincash:')
+      assert.equal(
+        addr,
+        'bitcoincash:qzd7s66p0mh97s2tqkrwacx4dazwataul5m9f9yw68'
+      )
+    })
+
+    it('should derive cash address from second sample scriptSig', () => {
+      const addr = getAddressFromUnlockScriptHex(SCRIPT_SIG_2)
+      assert.equal(
+        addr,
+        'bitcoincash:qrnr8q2ndfmzgfehz5txel9jpq3lrwhvt5f270fnd4'
+      )
+    })
+  })
+
+  describe('#getSignerAddress', () => {
+    const SCRIPT_SIG_1 =
+      '483045022100e15e18048b78e744fe8e440eb2687b5d4eb7009140d5e71950d4351c6e3bf2ef022031b0dab7326846a58e16f6a753e0d011514f827d2adacde63912daa3f85636c5412103833927b98fab40d5f857214d802ba42ea21087105b81e9bff57bf2486c9ff171'
+
+    it('should return signer from txDetails with vin scriptSig', () => {
+      const txDetails = {
+        vin: [{ scriptSig: { hex: SCRIPT_SIG_1 } }]
+      }
+      const addr = getSignerAddress(txDetails)
+      assert.equal(
+        addr,
+        'bitcoincash:qzd7s66p0mh97s2tqkrwacx4dazwataul5m9f9yw68'
+      )
+    })
+
+    it('should return null when no vin', () => {
+      assert.equal(getSignerAddress({}), null)
+    })
+  })
 })