T14: penanda vote basi (last_vote dari rasio bobot/stake, filter ?stale=1, VEX_STALE_DAYS)

get_voters.py

@@ -3,10 +3,11 @@
 Berjalan imparsial (repeatable) dan siap dijadwalkan (cron). Memakai requests.
 """
 
+import math
 import sqlite3
 import sys
 import time
-from datetime import datetime
+from datetime import datetime, timedelta
 
 import requests
 
@@ -23,6 +24,30 @@ LIMIT = 500
 # Ambang-batas nama akun "0" (kodifikasi uint64 0) pada tabel voters
 ZERO_OWNER = '...........q'
 
+# Skala stake (×10000) dan epoch bobot suara Vexanium (1 Jan 2000)
+VEX_SCALE = 10000
+WEIGHT_EPOCH = datetime(2000, 1, 1)
+
+
+def derive_last_vote(weight, staked_vex):
+    """V13: perkiraan waktu revote terakhir dari rasio bobot/stake.
+
+    Vexanium: last_vote_weight = staked_raw × 2^(tahun sejak 2000).
+    Maka t = log2(last_vote_weight / staked_raw) → tanggal revote.
+    Kembalikan None bila tak bisa dihitung (bobot/stake nol atau tak valid).
+    """
+    staked_raw = staked_vex * VEX_SCALE
+    if staked_raw <= 0:
+        return None
+    try:
+        ratio = float(weight) / staked_raw
+    except (TypeError, ValueError):
+        return None
+    if ratio <= 0:
+        return None
+    t_years = math.log(ratio) / math.log(2)
+    return (WEIGHT_EPOCH + timedelta(days=t_years * 365.25)).isoformat(timespec='seconds')
+
 
 def fetch_with_retry(payload, max_retries=3, timeout=30):
     """POST ke RPC dengan retry (node publik sering timeout).
@@ -93,6 +118,7 @@ def normalize(row):
         'owner': owner,
         'weight': row.get('last_vote_weight', ''),  # V6: bobot verbatim (string)
         'staked': staked_vex,
+        'last_vote': derive_last_vote(row.get('last_vote_weight', ''), staked_vex),
     }
 
 
@@ -112,12 +138,14 @@ def persist(rows):
             'owner TEXT PRIMARY KEY, '
             'weight TEXT NOT NULL, '
             'staked REAL NOT NULL, '
-            'scanned_at TEXT NOT NULL)'
+            'scanned_at TEXT NOT NULL, '
+            'last_vote TEXT)'
         )
         conn.executemany(
-            'INSERT INTO voters (owner, weight, staked, scanned_at) '
-            'VALUES (?, ?, ?, ?)',
-            [(r['owner'], r['weight'], r['staked'], scanned_at) for r in rows],
+            'INSERT INTO voters (owner, weight, staked, scanned_at, last_vote) '
+            'VALUES (?, ?, ?, ?, ?)',
+            [(r['owner'], r['weight'], r['staked'], scanned_at, r.get('last_vote'))
+             for r in rows],
         )
         conn.commit()
     finally: