revised configure-bitcoin

spells/menu/configure-bitcoin

@@ -1,8 +1,8 @@
 #!/bin/sh
 
-# This spell alters the location of thy Bitcoin data chamber on your system.
+# This script facilitates the setting of the configurations for thy Bitcoin system.
 
-# Check if a command needs to be re-invoked with sudo
+# Function to check if a command needs to be run with sudo
 retry_with_sudo() {
     echo "Permission denied. Invoking the power of the super user..."
     sudo "$@"
@@ -12,67 +12,64 @@ retry_with_sudo() {
     fi
 }
 
-# Check for the bitcoin.conf file
+# Create .bitcoin directory if it does not exist
-if [ ! -f "$HOME/.bitcoin/bitcoin.conf" ]; then
+mkdir -p "$HOME/.bitcoin"
-    echo "Unable to locate bitcoin.conf. Canst thou provide its location?"
-    read bitcoin_conf
-    if [ ! -f "$bitcoin_conf" ]; then
-        echo "bitcoin.conf file not found at the provided location. The spell must end here."
-        exit 1
-    fi
-else
 bitcoin_conf="$HOME/.bitcoin/bitcoin.conf"
-fi
+reset_conf="N"
 
-# Get the current Bitcoin directory
+# If bitcoin.conf doesn't exist, create it. If it does exist, ask to reset it.
-current_directory=$(grep "datadir" "$bitcoin_conf" | cut -d'=' -f2)
+if [ ! -f "$bitcoin_conf" ]; then
-if [ -z "$current_directory" ]; then
+    touch "$bitcoin_conf"
-    current_directory="$HOME/.bitcoin"
+    reset_conf="Y"
 else
-    # Confirm that the directory actually exists
+    printf "Would you like to reset bitcoin.conf to its default settings? (Y/n): "
-    if [ ! -d "$current_directory" ]; then
+    read -r reset_conf_input
-        echo "The Bitcoin data chamber specified in bitcoin.conf doth not exist. Please ensure the correctness of the 'datadir' value in bitcoin.conf."
+    reset_conf=${reset_conf_input:-N}
-        exit 1
-    fi
-    echo "Verified the existence of the Bitcoin data chamber at: $current_directory"
 fi
 
-# Ask for the new directory
+# Helper function to modify bitcoin.conf using awk
-echo "Enter the new haven for thy Bitcoin data:"
+modify_bitcoin_conf() {
-read new_directory
+    local key=$1
+    local value=$2
+    awk -v key="$key" -v value="$value" '!/^#/ && $1==key {found=1; $3=value} 1; END {if (!found) print key"="value}' "$bitcoin_conf" > "$bitcoin_conf.tmp" && mv "$bitcoin_conf.tmp" "$bitcoin_conf" || retry_with_sudo awk -v key="$key" -v value="$value" '!/^#/ && $1==key {found=1; $3=value} 1; END {if (!found) print key"="value}' "$bitcoin_conf" | sudo tee "$bitcoin_conf" >/dev/null
+}
 
-# Create the new directory if it does not exist
+# Apply default settings if the file was newly created or if the user chose to reset it.
-if [ ! -d "$new_directory" ]; then
+if [ "$reset_conf" = "Y" ]; then
-    mkdir "$new_directory" || retry_with_sudo mkdir "$new_directory"
+    modify_bitcoin_conf "proxy" "127.0.0.1:9050"
+    modify_bitcoin_conf "listen" "1"
+    modify_bitcoin_conf "bind" "127.0.0.1"
+    modify_bitcoin_conf "disablewallet" "1"
+    modify_bitcoin_conf "zmqpubrawblock" "tcp://127.0.0.1:28332"
+    modify_bitcoin_conf "zmqpubrawtx" "tcp://127.0.0.1:28333"
+    modify_bitcoin_conf "BTC_LOGIN"
 fi
 
-# Ask user what to move
+# Storage amount and pruning question
-echo "What wouldst thou like to move to the new Bitcoin data haven?"
+printf "Wouldst thou like to operate bitcoin in pruned mode? (Y/n): "
-echo "1. The entire Bitcoin data chamber"
+read -r prune
-echo "2. Only the blockchain data"
+prune=${prune:-N}
-echo "3. Move naught"
+if [ "$prune" = "Y" ]; then
+    modify_bitcoin_conf "prune" "555"
+else
+    echo "Creating archival node, good choice."
+    modify_bitcoin_conf "prune" "0"
+fi
 
-read move_choice
+# Maximum memory
+printf "What is the maximum memory thou art willing to dedicate to Bitcoin in MB? (Type a number) [default: 300]: "
+read -r max_mem
+max_mem=${max_mem:-300}
+modify_bitcoin_conf "dbcache" "$max_mem"
 
-case "$move_choice" in
+# Network selection
-    1)
+printf "Art thou operating on the main Bitcoin network? (Y/n): "
-        echo "Moving the entire Bitcoin data chamber..."
+read -r mainnet
-        mv "$current_directory"/* "$new_directory" || retry_with_sudo mv "$current_directory"/* "$new_directory"
+mainnet=${mainnet:-Y}
-        ;;
+if [ "$mainnet" = "Y" ]; then
-    2)
+    modify_bitcoin_conf "testnet" "0"
-        echo "Moving only the blockchain data..."
+else
-        mv "$current_directory/blocks" "$current_directory/chainstate" "$new_directory" || retry_with_sudo mv "$current_directory/blocks" "$current_directory/chainstate" "$new_directory"
+    modify_bitcoin_conf "testnet" "1"
-        ;;
+fi
-    3)
-        echo "Moving naught..."
-        ;;
-    *)
-        echo "Invalid choice, the spell ends here without moving anything."
-        exit 1
-        ;;
-esac
-
-# Update the bitcoin.conf file to point to the new directory
-awk -v path="$new_directory" '!/datadir/ {print} /datadir/ {$3 = path; print}' "$bitcoin_conf" | tee "$bitcoin_conf" >/dev/null || { retry_with_sudo awk -v path="$new_directory" '!/datadir/ {print} /datadir/ {$3 = path; print}' "$bitcoin_conf" | sudo tee "$bitcoin_conf" >/dev/null; }
 
-echo "The Bitcoin data chamber now resides in: $new_directory"
+echo "Thy Bitcoin configurations have been set. Fare thee well."