node.sh

# 1. Clean removal of old file
sudo rm -f /usr/local/bin/node

# 2. Fresh write
sudo tee /usr/local/bin/node > /dev/null << 'EOF'
#!/bin/bash

# Setup paths
REAL_USER="${SUDO_USER:-$USER}"
USER_HOME=$(eval echo ~"$REAL_USER")
BUN_PATH="$USER_HOME/.bun/bin/bun"
CACHE_FILE="$USER_HOME/.node_version_cache"

# Function to fetch versions from internet
fetch_from_internet() {
    local data=$(curl -s --connect-timeout 3 --max-time 10 https://nodejs.org/dist/index.json 2>/dev/null)
    if [ -n "$data" ]; then
        I_LATEST=$(echo "$data" | grep -m1 '"version"' | cut -d'"' -f4)
        I_LTS=$(echo "$data" | grep -B1 '"lts"' | grep '"version"' | head -1 | cut -d'"' -f4)
    fi
}

# Function to update cache file
update_cache() {
    if [ -n "$I_LATEST" ] && [ -n "$I_LTS" ]; then
        printf "%s\n%s\n" "$I_LATEST" "$I_LTS" > "$CACHE_FILE"
    fi
}

# Logic to decide if update is needed
SHOULD_UPDATE=0
if [ ! -f "$CACHE_FILE" ]; then
    SHOULD_UPDATE=1
else
    NOW=$(date +%s)
    MOD=$(stat -c %Y "$CACHE_FILE" 2>/dev/null || echo 0)
    AGE=$(( NOW - MOD ))
    if [ "$AGE" -gt 90000 ]; then SHOULD_UPDATE=1; fi
fi

# Try to get Internet versions
I_LATEST=""
I_LTS=""
if [ "$SHOULD_UPDATE" -eq 1 ]; then
    fetch_from_internet
    update_cache >/dev/null 2>&1 &
fi

# Read from cache
C_LATEST=""
C_LTS=""
if [ -f "$CACHE_FILE" ]; then
    C_LATEST=$(sed -n '1p' "$CACHE_FILE" 2>/dev/null)
    C_LTS=$(sed -n '2p' "$CACHE_FILE" 2>/dev/null)
fi

# --- NEW FALLBACK: Get Bun's internal Node version ---
BUN_INTERNAL_VER=$("$BUN_PATH" -e "console.log(process.version)" 2>/dev/null)

# --- THE PRIORITY FALLBACK CHAIN ---
# a. Internet Latest -> b. Internet LTS -> c. Cached Latest -> d. Cached LTS -> e. Bun process.version
RAW_VER="${I_LATEST:-${I_LTS:-${C_LATEST:-${C_LTS:-$BUN_INTERNAL_VER}}}}"
CLEAN_VER=$(echo "$RAW_VER" | tr -d '[:space:]' | sed 's/date//g')

# Handle arguments
case "$1" in
    -v|--version)
        echo "$CLEAN_VER"
        exit 0
        ;;
    --lts-version)
        LTS_RAW="${I_LTS:-${C_LTS:-$BUN_INTERNAL_VER}}"
        echo "$LTS_RAW" | tr -d '[:space:]' | sed 's/date//g'
        exit 0
        ;;
    "")
        exec "$BUN_PATH"
        ;;
    *)
        exec "$BUN_PATH" "$@"
        ;;
esac
EOF

# 3. Restore permissions
sudo chmod +x /usr/local/bin/node