ao-mud is a spellbook of well-commented atomic bash scripts that each do one thing. we are building semantic building blocks for an autonomously-evolving digital spellcasting language.
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#!/bin/sh
# This script is a magical tome of sorcery, commanding the elusive entity known as Bitcoin.
. colors
# Returns 0 (true) if Bitcoin is installed, 1 (false) if not
is_bitcoin_installed() {
command -v bitcoin-cli >/dev/null 2>&1
}
# Returns 0 (true) if Bitcoin server is running, 1 (false) if not
is_bitcoin_running() {
bitcoin-cli getblockchaininfo >/dev/null 2>&1
}
# Get Bitcoin sync status: 'syncing', 'synced', 'unknown', or 'error'
get_sync_status() {
sync_status=$(bitcoin-cli getblockchaininfo 2>&1 | grep 'initialblockdownload' | awk '{print $2}' | tr -d ',')
if [ "$?" -ne "0" ]; then
echo "error"
elif [ "$sync_status" = "true" ]; then
echo "syncing"
elif [ "$sync_status" = "false" ]; then
echo "synced"
else
echo "unknown"
fi
}
# Returns colored text based on status
color_for_status() {
case "$1" in
"installed, running, synced")
printf "${GREEN}"
;;
"not installed")
printf "${GRAY}"
;;
"installed, not running"|"installed, running, syncing"*|"installed, running, not synced")
printf "${YELLOW}"
;;
"installed, running, error"|"*")
printf "${RED}"
;;
esac
}
# Returns colored status message
get_status() {
if is_bitcoin_installed; then
if is_bitcoin_running; then
running_status="running, "
sync_status=$(get_sync_status)
if [ "$sync_status" = "synced" ]; then
install_status="installed, $running_status synced"
elif [ "$sync_status" = "syncing" ]; then
progress=$(bitcoin-cli getblockchaininfo | grep 'progress' | awk '{print int($2*100)}')
install_status="installed, $running_status syncing $progress%"
elif [ "$sync_status" = "unknown" ]; then
install_status="installed, $running_status not synced"
elif [ "$sync_status" = "error" ]; then
install_status="installed, $running_status error"
fi
else
install_status="installed, not running"
fi
else
install_status="not installed"
fi
printf "$(color_for_status "$install_status")$install_status${RESET}\n"
}
# Displays the menu
display_menu() {
title="${BOLD}${CYAN}Bitcoin: $(get_status)"
blockchain_info="Display Blockchain Info%bitcoin-cli getblockchaininfo"
set_config="Configure Bitcoin%configure-bitcoin"
change_directory="Change Bitcoin Directory%change-bitcoin-directory"
clear_cache="Clear Bitcoin Cache%# sometimes necessary when cache becomes corrupted"
repair_permissions="Repair Permissions%repair-bitcoin-permissions # Sometimes necessary"
exit_option="Exit%kill -2 $$" # Commands are run with 'eval' by the menu script, so we can't simply say 'exit'. The keyword $$ gets this scripts PID and the -2 code is SIGINT aka Ctrl-C
if is_bitcoin_installed; then
install_bitcoin_option="Uninstall Bitcoin%uninstall-bitcoin"
if is_bitcoin_running; then
bitcoin_server_option="Stop Bitcoin Service%sudo systemctl stop bitcoind"
menu "$title" "$blockchain_info" "$set_config" "$change_directory" "$clear_cache" "$repair_permissions" "$bitcoin_server_option" "$install_bitcoin_option" "$exit_option"
else
bitcoin_server_option="Start Bitcoin Service%sudo systemctl start bitcoind"
menu "$title" "$set_config" "$change_directory" "$clear_cache" "$repair_permissions" "$bitcoin_server_option" "$install_bitcoin_option" "$exit_option"
fi
else
install_bitcoin_option="Install Bitcoin%install-bitcoin"
menu "$title" "$install_bitcoin_option" "$exit_option"
fi
}
# Catch Ctrl-C and exit
trap 'echo exiting; exit' INT
# Main execution loop
while true; do
display_menu
done