GOT SHARE log: match p2pool style (diff=, hash=, miner=)

Author: frstrtr

src/c2pool/c2pool_refactored.cpp

@@ -2288,10 +2288,29 @@ int main(int argc, char* argv[]) {
                         LOG_ERROR << "broadcast_share failed: " << e.what();
                     }
 
-                    LOG_INFO << "GOT SHARE! " << share_hash.GetHex().substr(0, 8)
-                             << " prev " << prev_share.GetHex().substr(0, 8)
-                             << " subsidy=" << p.subsidy
-                             << " merged=" << merged_addrs.size();
+                    {
+                        auto share_target = chain::bits_to_target(
+                            p.has_frozen_fields && p.frozen_bits ? p.frozen_bits : p.bits);
+                        double share_diff = chain::target_to_difficulty(share_target);
+                        // Extract primary address from username
+                        std::string miner_addr;
+                        for (const auto& [script, _] : p.merged_addresses) { (void)_; }
+                        // Use the payout script hash160 as miner identifier
+                        if (p.payout_script.size() == 25 &&
+                            p.payout_script[0] == 0x76 && p.payout_script[1] == 0xa9) {
+                            static const char* HX = "0123456789abcdef";
+                            for (int i = 3; i < 23 && i < (int)p.payout_script.size(); ++i) {
+                                miner_addr += HX[p.payout_script[i] >> 4];
+                                miner_addr += HX[p.payout_script[i] & 0xf];
+                            }
+                        }
+                        LOG_INFO << "GOT SHARE! "
+                                 << std::scientific << std::setprecision(2)
+                                 << "diff=" << share_diff
+                                 << std::defaultfloat
+                                 << " hash=" << share_hash.GetHex()
+                                 << " miner=" << miner_addr;
+                    }
                 } catch (const std::exception& e) {
                     LOG_ERROR << "create_share_fn failed (before broadcast): " << e.what();
                 }