202 lines
7.2 KiB
Bash
202 lines
7.2 KiB
Bash
#!/usr/bin/env zsh
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# ============================================================================
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# MOTD (Message of the Day) - Dynamic System Info
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# ============================================================================
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# Displays system information on shell startup
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# Optimized for Arch/CachyOS with direct /proc access
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#
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# Functions:
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# show_motd - Compact box format
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# show_motd_mini - Single line format
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# show_motd_full - Extended info
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# ============================================================================
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# Only run in interactive shells
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[[ -o interactive ]] || return 0
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# ============================================================================
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# Source Configuration
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# ============================================================================
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# utils.zsh sources config.zsh which sources dotfiles.conf
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# This gives us DF_WIDTH, MOTD_STYLE, colors, and all other settings
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source "${0:A:h}/../lib/utils.zsh" 2>/dev/null || \
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source "$HOME/.dotfiles/zsh/lib/utils.zsh" 2>/dev/null || {
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# Fallback if utils.zsh not available
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typeset -g DF_RESET=$'\033[0m' DF_BOLD=$'\033[1m' DF_DIM=$'\033[2m'
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typeset -g DF_BLUE=$'\033[38;5;39m' DF_CYAN=$'\033[38;5;51m'
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typeset -g DF_GREEN=$'\033[38;5;82m' DF_YELLOW=$'\033[38;5;220m'
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typeset -g DF_RED=$'\033[38;5;196m' DF_GREY=$'\033[38;5;242m' DF_NC=$'\033[0m'
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typeset -g DF_LIGHT_BLUE=$'\033[38;5;39m' DF_LIGHT_GREEN=$'\033[38;5;82m'
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typeset -g DF_WIDTH="${DF_WIDTH:-66}"
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typeset -g MOTD_STYLE="${MOTD_STYLE:-compact}"
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}
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# ============================================================================
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# Optimized Info Gathering (using /proc directly)
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# ============================================================================
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_motd_uptime() {
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local uptime_seconds=$(cut -d. -f1 /proc/uptime 2>/dev/null)
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[[ -z "$uptime_seconds" ]] && { echo "?"; return; }
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local days=$((uptime_seconds / 86400))
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local hours=$(((uptime_seconds % 86400) / 3600))
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local mins=$(((uptime_seconds % 3600) / 60))
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if (( days > 0 )); then
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echo "${days}d${hours}h"
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elif (( hours > 0 )); then
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echo "${hours}h${mins}m"
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else
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echo "${mins}m"
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fi
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}
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_motd_load() { cut -d' ' -f1 /proc/loadavg 2>/dev/null || echo "?"; }
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_motd_mem() {
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awk '/MemTotal/ {total=$2} /MemAvailable/ {avail=$2} END {
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if (total > 0) {
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used=(total-avail)/1024/1024
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total_gb=total/1024/1024
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printf "%.1fG/%.0fG", used, total_gb
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} else { print "N/A" }
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}' /proc/meminfo 2>/dev/null || echo "N/A"
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}
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_motd_disk() { df -h / 2>/dev/null | awk 'NR==2 {print $3 "/" $2}' || echo "N/A"; }
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_motd_failed_services() {
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local cache_file="/tmp/.motd-failed-${UID}"
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local cache_age=300
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if [[ -f "$cache_file" ]]; then
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local file_age=$(($(date +%s) - $(stat -c %Y "$cache_file" 2>/dev/null || echo 0)))
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(( file_age < cache_age )) && { cat "$cache_file"; return; }
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fi
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local count=$(systemctl --failed --no-pager --no-legend 2>/dev/null | wc -l)
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echo "$count" > "$cache_file" 2>/dev/null
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echo "$count"
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}
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_motd_updates() { echo "${UPDATE_PKG_COUNT:-0}"; }
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# ============================================================================
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# Box Drawing - Uses DF_WIDTH from config
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# ============================================================================
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_motd_line() {
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local char="$1"
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local width="${DF_WIDTH:-66}"
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local line=""
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for ((i=0; i<width; i++)); do line+="$char"; done
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echo "$line"
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}
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# ============================================================================
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# Main Display Function (Compact)
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# ============================================================================
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show_motd() {
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[[ -n "$_MOTD_SHOWN" && "$1" != "--force" ]] && return 0
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typeset -g _MOTD_SHOWN=1
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local width="${DF_WIDTH:-66}"
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local hostname="${HOST:-$(hostname -s 2>/dev/null)}"
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local datetime=$(date '+%a %b %d %H:%M')
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local uptime=$(_motd_uptime)
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local load=$(_motd_load)
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local mem=$(_motd_mem)
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local disk=$(_motd_disk)
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local hline=$(_motd_line '═')
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local inner=$((width - 2))
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echo ""
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echo "${DF_GREY}╒${hline}╕${DF_NC}"
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local h_left="✦ ${hostname}"
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local h_center=$(hostname -i 2>/dev/null | awk -F" " '{print $1}')
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local h_right="${datetime}"
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local h_pad=$(((inner - ${#h_left} - ${#h_center} - ${#h_right}) / 2))
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local h_spaces=""
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for ((i=0; i<h_pad; i++)); do h_spaces+=" "; done
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if [ "$EUID" -ne 0 ]; then
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echo "${DF_GREY}│${DF_NC} ${DF_BOLD}${DF_LIGHT_BLUE}${h_left}${DF_NC}${h_spaces}${DF_YELLOW}${h_center}${h_spaces}${DF_NC}${DF_BOLD}${h_right}${DF_NC} ${DF_GREY}│${DF_NC}"
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else
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echo "${DF_GREY}│${DF_NC} ${DF_BOLD}${DF_RED}${h_left}${DF_NC}${h_spaces}${DF_YELLOW}${h_center}${h_spaces}${DF_NC}${DF_BOLD}${h_right}${DF_NC} ${DF_GREY}│${DF_NC}"
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fi
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echo "${DF_GREY}╘${hline}╛${DF_NC}"
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local s1="${DF_GREY}｢${DF_YELLOW}▲ ${DF_NC}${uptime}${DF_GREY}｣"
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local s2="${DF_GREY}｢${DF_CYAN}◆ ${DF_NC}${load}${DF_GREY}｣"
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local s3="${DF_GREY}｢${DF_GREEN}▪ ${DF_NC}${mem}${DF_GREY}｣"
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local s4="${DF_GREY}｢${DF_BLUE}● ${DF_NC}${disk}${DF_GREY}｣"
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echo " ${s1} ${s2} ${s3} ${s4}"
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# Failed services warning
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if [[ "${MOTD_SHOW_FAILED_SERVICES:-true}" == "true" ]]; then
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local failed=$(_motd_failed_services)
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(( failed > 0 )) && echo " ${DF_RED}⚠${DF_NC} ${failed} failed service(s)"
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fi
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echo ""
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}
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# ============================================================================
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# Mini Format (Single Line)
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# ============================================================================
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show_motd_mini() {
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local hostname="${HOST:-$(hostname -s 2>/dev/null)}"
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local uptime=$(_motd_uptime)
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local load=$(_motd_load)
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echo "${DF_LIGHT_BLUE}${hostname}${DF_NC} │ up ${uptime} │ load ${load}"
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}
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# ============================================================================
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# Full Format (Extended Info)
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# ============================================================================
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show_motd_full() {
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show_motd --force
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local width="${DF_WIDTH:-66}"
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echo "${DF_CYAN}System Details${DF_NC}"
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printf "${DF_GREY}─%.0s${DF_NC}" $(seq 1 $width); echo ""
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echo " ${DF_DIM}Kernel:${DF_NC} $(uname -r)"
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echo " ${DF_DIM}Shell:${DF_NC} ${SHELL##*/} ${ZSH_VERSION:-}"
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if [[ -f /etc/os-release ]]; then
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local distro=$(grep '^PRETTY_NAME=' /etc/os-release | cut -d'"' -f2)
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echo " ${DF_DIM}OS:${DF_NC} ${distro}"
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fi
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if command -v pacman &>/dev/null; then
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local pkg_count=$(pacman -Q 2>/dev/null | wc -l)
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echo " ${DF_DIM}Packages:${DF_NC} ${pkg_count}"
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fi
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echo ""
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}
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# ============================================================================
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# Auto-display based on MOTD_STYLE from config
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# ============================================================================
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_motd_auto() {
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case "${MOTD_STYLE:-compact}" in
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full) show_motd_full ;;
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mini) show_motd_mini ;;
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none|off|false) ;;
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*) show_motd ;;
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esac
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}
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# Run on source if ENABLE_MOTD is true
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[[ "${ENABLE_MOTD:-true}" == "true" ]] && _motd_auto
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