# save and use original argument to invoke bitcoind
# bitcoind might not be in $PATH
bitcoind="$1"

COMPREPLY=()
_get_comp_words_by_ref -n = cur prev words cword

if ((cword > 4)); then
    case ${words[cword-4]} in
        listtransactions)
            COMPREPLY=( $( compgen -W "true false" -- "$cur" ) )
            return 0
            ;;
        signrawtransaction)
            COMPREPLY=( $( compgen -W "ALL NONE SINGLE ALL|ANYONECANPAY NONE|ANYONECANPAY SINGLE|ANYONECANPAY" -- "$cur" ) )
            return 0
            ;;
    esac
fi

if ((cword > 3)); then
    case ${words[cword-3]} in
        addmultisigaddress)
            _bitcoin_accounts
            return 0
            ;;
        getbalance|gettxout|importaddress|importprivkey|listreceivedbyaccount|listreceivedbyaddress|listsinceblock)
            COMPREPLY=( $( compgen -W "true false" -- "$cur" ) )
            return 0
            ;;
    esac
fi

if ((cword > 2)); then
    case ${words[cword-2]} in
        addnode)
            COMPREPLY=( $( compgen -W "add remove onetry" -- "$cur" ) )
            return 0
            ;;
        getblock|getrawtransaction|gettransaction|listaccounts|listreceivedbyaccount|listreceivedbyaddress|sendrawtransaction)
            COMPREPLY=( $( compgen -W "true false" -- "$cur" ) )
            return 0
            ;;
        move|setaccount)
            _bitcoin_accounts
            return 0
            ;;
    esac
fi

case "$prev" in
    backupwallet|dumpwallet|importwallet)
        _filedir
        return 0
        ;;
    getmempool|lockunspent|setgenerate)
        COMPREPLY=( $( compgen -W "true false" -- "$cur" ) )
        return 0
        ;;
    getaccountaddress|getaddressesbyaccount|getbalance|getnewaddress|getreceivedbyaccount|listtransactions|move|sendfrom|sendmany)
        _bitcoin_accounts
        return 0
        ;;
esac

case "$cur" in
    -conf=*|-pid=*|-loadblock=*|-wallet=*)
        cur="${cur#*=}"
        _filedir
        return 0
        ;;
    -datadir=*)
        cur="${cur#*=}"
        _filedir -d
        return 0
        ;;
    -*=*)   # prevent nonsense completions
        return 0
        ;;
    *)
        local helpopts commands

        # only parse --help if senseful
        if [[ -z "$cur" || "$cur" =~ ^- ]]; then
            helpopts=$($bitcoind --help 2>&1 | awk '$1 ~ /^-/ { sub(/=.*/, "="); print $1 }' )
        fi

        # only parse help if senseful
        if [[ -z "$cur" || "$cur" =~ ^[a-z] ]]; then
            commands=$(_bitcoin_rpc help 2>/dev/null | awk '$1 ~ /^[a-z]/ { print $1; }')
        fi

        COMPREPLY=( $( compgen -W "$helpopts $commands" -- "$cur" ) )

        # Prevent space if an argument is desired
        if [[ $COMPREPLY == *= ]]; then
            compopt -o nospace
        fi
        return 0
        ;;
esac