#!/bin/bash

# run bitcoind
bitcoind --daemonwait
sleep 5

# Create wallet if it doesn't exist
DATADIR=${DATADIR:-~/.bitcoin/}
if ! bitcoin-cli -datadir=$DATADIR listwallets | grep -q "custom_signet"; then
    echo "Creating wallet custom_signet"
    bitcoin-cli -datadir=$DATADIR -named createwallet wallet_name="custom_signet" load_on_startup=true descriptors=true
fi

# Load wallet if not already loaded
if ! bitcoin-cli -datadir=$DATADIR listwallets | grep -q "custom_signet"; then
    bitcoin-cli -datadir=$DATADIR loadwallet custom_signet
fi

# Import private key if in mining mode (Bitcoin Core 30+ requires descriptor wallets)
# The miner needs the private key in the wallet to sign blocks via walletprocesspsbt
# IMPORTANT: For signet mining, we need to import as pk() (P2PK) not wpkh() (P2WPKH)
# because the SIGNETCHALLENGE uses a P2PK script that must be signed
if [[ "$MINERENABLED" == "1" ]]; then
    PRIVKEY=${PRIVKEY:-$(cat ~/.bitcoin/PRIVKEY.txt)}
    if [[ -n "$PRIVKEY" ]]; then
        echo "Importing private key for mining (descriptor wallet)"
        # Import as pk() for P2PK signing (required for signet challenge)
        # The signet miner needs to sign transactions to the SIGNETCHALLENGE which is a P2PK script
        # Note: pk() descriptors cannot be active (must be ranged), but they can still be used for signing
        DESCRIPTOR_INFO=$(bitcoin-cli -datadir=$DATADIR getdescriptorinfo "pk($PRIVKEY)")
        CHECKSUM=$(echo "$DESCRIPTOR_INFO" | jq -r '.checksum')
        # Import descriptor with checksum (required for Bitcoin Core 30+)
        # The descriptor doesn't need to be active to sign - it just needs to be in the wallet
        IMPORT_RESULT=$(bitcoin-cli -datadir=$DATADIR importdescriptors "[{\"desc\":\"pk($PRIVKEY)#$CHECKSUM\",\"timestamp\":0,\"internal\":false}]")
        if echo "$IMPORT_RESULT" | jq -e '.[0].success == true' > /dev/null; then
            echo "Private key imported successfully into descriptor wallet (P2PK for signet)"
        else
            echo "Warning: Private key import may have failed"
            echo "Import result: $IMPORT_RESULT"
        fi
    fi
fi

echo "get magic"
magic=$(cat /root/.bitcoin/signet/debug.log | grep -m1 magic)
magic=${magic:(-8)}
echo $magic > /root/.bitcoin/MAGIC.txt

# if in mining mode
if [[ "$MINERENABLED" == "1" ]]; then
    mine.sh
fi