Add Fujicoin (#218)

* Add Fujicoin

* Add explanation of FujiDaemon

lib/coins.py

@@ -42,7 +42,7 @@ from lib.script import ScriptPubKey
 from lib.tx import Deserializer, DeserializerSegWit, DeserializerAuxPow, \
     DeserializerZcash, DeserializerTxTime, DeserializerReddcoin
 from server.block_processor import BlockProcessor
-from server.daemon import Daemon, DashDaemon, LegacyRPCDaemon
+from server.daemon import Daemon, DashDaemon, LegacyRPCDaemon, FujiDaemon
 from server.session import ElectrumX, DashElectrumX
 
 
@@ -926,4 +926,23 @@ class Crown(AuxPowMixin, Coin):
     TX_COUNT = 13336629
     TX_COUNT_HEIGHT = 1268206
     TX_PER_BLOCK = 10
-    RPC_PORT = 9341
+    RPC_PORT = 9341
+
+class Fujicoin(Coin):
+    NAME = "Fujicoin"
+    SHORTNAME = "FJC"
+    NET = "mainnet"
+    XPUB_VERBYTES = bytes.fromhex("0488b21e")
+    XPRV_VERBYTES = bytes.fromhex("0488ade4")
+    P2PKH_VERBYTE = bytes.fromhex("24")
+    P2SH_VERBYTES = [bytes.fromhex("10")]
+    WIF_BYTE = bytes.fromhex("a4")
+    GENESIS_HASH = ('adb6d9cfd74075e7f91608add4bd2a2e'
+                    'a636f70856183086842667a1597714a0')
+#    DESERIALIZER = DeserializerSegWit
+    DAEMON = FujiDaemon
+    TX_COUNT = 170478
+    TX_COUNT_HEIGHT = 1521676
+    TX_PER_BLOCK = 1
+    RPC_PORT = 3776
+#    REORG_LIMIT = 1000

server/daemon.py

@@ -272,6 +272,18 @@ class DashDaemon(Daemon):
         '''Return the masternode status.'''
         return await self._send_single('masternodelist', params)
 
+class FujiDaemon(Daemon):
+    '''This is a measure against coin daemon which does not have the 'estimatefee' command.
+    When the electrum is in 'Use dynamic fees' mode, the estimatefee does not return from electrum-X, so the user can not remit money.
+    See class Fujicoin() in lib/coins.py for usage.'''
+    async def estimatefee(self, params):
+        '''Return the fee estimate for the given parameters.'''
+        return 0.001
+
+    async def relayfee(self):
+        '''The minimum fee a low-priority tx must pay in order to be accepted
+        to the daemon's memory pool.'''
+        return 0.001
 
 class LegacyRPCDaemon(Daemon):
     '''Handles connections to a daemon at the given URL.