#!/usr/bin/env bash
set -euo pipefail
source ./lib.sh

log "MOTD installieren …"

install -d /usr/local/bin

cat >/usr/local/bin/mw-motd <<'SH'
#!/usr/bin/env bash
set -euo pipefail

# Farben
NC="\033[0m"; CY="\033[1;36m"; GR="\033[1;32m"; YE="\033[1;33m"; RD="\033[1;31m"; GY="\033[0;90m"; WH="\033[1;37m"

# Installer-Variablen (optional)
UI_HOST=""; WEBMAIL_HOST=""; MAIL_HOSTNAME=""; LE_EMAIL=""; PROXY_MODE=""; NPM_IP=""
if [ -r /etc/mailwolt/installer.env ]; then
  # shellcheck disable=SC1091
  . /etc/mailwolt/installer.env || true
fi
# Aus .env (falls vorhanden)
if [ -r /var/www/mailwolt/.env ]; then
  LE_EMAIL="${LE_EMAIL:-$(grep -E '^LE_EMAIL=' /var/www/mailwolt/.env 2>/dev/null | sed 's/^LE_EMAIL=//')}"
  PROXY_MODE="${PROXY_MODE:-$(grep -E '^PROXY_MODE=' /var/www/mailwolt/.env 2>/dev/null | sed 's/^PROXY_MODE=//')}"
  NPM_IP="${NPM_IP:-$(grep -E '^NPM_IP=' /var/www/mailwolt/.env 2>/dev/null | sed 's/^NPM_IP=//')}"
fi

# ASCII-Header
printf "${CY}"
cat <<'ASCII'
::::    ::::      :::     ::::::::::: :::      :::       :::  ::::::::  :::    :::::::::::
+:+:+: :+:+:+   :+: :+:       :+:     :+:      :+:       :+: :+:    :+: :+:        :+:
+:+ +:+:+ +:+  +:+   +:+      +:+     +:+      +:+       +:+ +:+    +:+ +:+        +:+
+#+  +:+  +#+ +#++:++#++:     +#+     +#+      +#+  +:+  +#+ +#+    +:+ +#+        +#+
+#+       +#+ +#+     +#+     +#+     +#+      +#+ +#+#+ +#+ +#+    +#+ +#+        +#+
#+#       #+# #+#     #+#     #+#     #+#       #+#+# #+#+#  #+#    #+# #+#        #+#
###       ### ###     ### ########### ########## ###   ###    ########  ########## ###
ASCII
printf "${NC}\n"

# Systemdaten
now="$(date '+%Y-%m-%d %H:%M:%S %Z')"
fqdn="$(hostname -f 2>/dev/null || hostname)"
ip_int="$(hostname -I 2>/dev/null | awk '{print $1}')"
ip_ext=""; command -v curl >/dev/null 2>&1 && ip_ext="$(curl -fsS --max-time 1 https://ifconfig.me 2>/dev/null || true)"
upt="$(uptime -p 2>/dev/null || true)"
cores="$(nproc 2>/dev/null || echo -n '?')"
load="$(awk '{print $1" / "$2" / "$3}' /proc/loadavg 2>/dev/null)"

# RAM/SWAP (MiB)
mem_total="$(awk '/MemTotal/ {print int($2/1024)}' /proc/meminfo 2>/dev/null)"
mem_avail="$(awk '/MemAvailable/ {print int($2/1024)}' /proc/meminfo 2>/dev/null)"
mem_used=$(( (mem_total-mem_avail) ))
swap_total="$(awk '/SwapTotal/ {print int($2/1024)}' /proc/meminfo 2>/dev/null)"
swap_free="$(awk '/SwapFree/  {print int($2/1024)}' /proc/meminfo 2>/dev/null)"
swap_used=$(( (swap_total-swap_free) ))

# Disks (/, /var)
disk_line(){
  local mnt="$1"
  df -hP "$mnt" 2>/dev/null | awk 'NR==2{printf "%s/%s (%s used)", $3,$2,$5}'
}
disk_root="$(disk_line /)"
disk_var="$(disk_line /var)"

svc_state(){
  local unit="$1"
  if systemctl is-active --quiet "$unit"; then
    printf "${GR}OK${NC}"
  else
    printf "${RD}FAIL${NC}"
  fi
}

# Zeilen
printf "${CY}Information as of:${NC} ${YE}%s${NC}\n" "$now"
printf "${GY}FQDN   :${NC} %s\n" "$fqdn"
if [ -n "$ip_ext" ]; then
  printf "${GY}IP     :${NC} %s ${GY}(ext:${NC} %s${GY})${NC}\n" "${ip_int:-?}" "$ip_ext"
else
  printf "${GY}IP     :${NC} %s\n" "${ip_int:-?}"
fi
printf "${GY}Uptime :${NC} %s\n" "${upt:-?}"
printf "${GY}CPU    :${NC} %s cores, load %s (1/5/15)\n" "$cores" "${load:-?}"
printf "${GY}RAM    :${NC} %s MiB used / %s MiB total\n" "${mem_used:-?}" "${mem_total:-?}"
printf "${GY}SWAP   :${NC} %s MiB used / %s MiB total\n" "${swap_used:-?}" "${swap_total:-?}"
printf "${GY}Disk / :${NC} %s\n" "${disk_root:-?}"
printf "${GY}Disk/var:${NC} %s\n" "${disk_var:-?}"

# App/Installer Infos
[ -n "$LE_EMAIL" ]     && printf "${GY}LE E-Mail:${NC} %s\n" "$LE_EMAIL"
[ -n "$UI_HOST" ]      && printf "${GY}UI Host :${NC} %s\n" "$UI_HOST"
[ -n "$WEBMAIL_HOST" ] && printf "${GY}Webmail :${NC} %s\n" "$WEBMAIL_HOST"
[ -n "$MAIL_HOSTNAME" ]&& printf "${GY}MX Host :${NC} %s\n" "$MAIL_HOSTNAME"
if [ -n "${PROXY_MODE:-}" ]; then
  if [ "$PROXY_MODE" = "1" ]; then
    printf "${GY}Proxy  :${NC} ja (NPM: %s)\n" "${NPM_IP:-unbekannt}"
  else
    printf "${GY}Proxy  :${NC} nein\n"
  fi
fi

# Services
printf "${WH}\nServices:${NC}\n"
printf "  nginx         … %b\n" "$(svc_state nginx)"
printf "  mariadb       … %b\n" "$(svc_state mariadb)"
printf "  redis-server  … %b\n" "$(svc_state redis-server)"
printf "  postfix       … %b\n" "$(svc_state postfix)"
printf "  dovecot       … %b\n" "$(svc_state dovecot)"
# App Units (optional)
printf "  mailwolt-ws   … %b\n" "$(svc_state mailwolt-ws)"
printf "  mailwolt-queue… %b\n" "$(svc_state mailwolt-queue)"
printf "  mailwolt-schedule … %b\n" "$(svc_state mailwolt-schedule)"

# Zertifikate (kurzer Hinweis, optional)
show_cert_hint(){
  local name="$1" path="$2"
  if [ -r "$path" ]; then
    local exp
    exp="$(openssl x509 -in "$path" -noout -enddate 2>/dev/null | sed 's/notAfter=//')"
    [ -n "$exp" ] && printf "${GY}%s cert:${NC} expires %s\n" "$name" "$exp"
  fi
}
show_cert_hint "UI"      "/etc/ssl/ui/fullchain.pem"
show_cert_hint "Webmail" "/etc/ssl/webmail/fullchain.pem"
show_cert_hint "MX"      "/etc/ssl/mail/fullchain.pem"

echo
SH

chmod +x /usr/local/bin/mw-motd

# update-motd integration
if [[ -d /etc/update-motd.d ]]; then
  cat >/etc/update-motd.d/10-mailwolt <<'SH'
#!/usr/bin/env bash
/usr/local/bin/mw-motd
SH
  chmod +x /etc/update-motd.d/10-mailwolt
  [[ -f /etc/update-motd.d/50-motd-news ]] && chmod -x /etc/update-motd.d/50-motd-news || true
else
  # Fallback für Systeme ohne dynamic MOTD
  cat >/etc/profile.d/10-mailwolt-motd.sh <<'SH'
case "$-" in *i*) /usr/local/bin/mw-motd ;; esac
SH
fi

# altes /etc/motd leeren (sonst doppelt)
: > /etc/motd 2>/dev/null || true

##!/usr/bin/env bash
#set -euo pipefail
#source ./lib.sh
#
#log "MOTD installieren …"
#install -d /usr/local/bin
#cat >/usr/local/bin/mw-motd <<'SH'
##!/usr/bin/env bash
#set -euo pipefail
#NC="\033[0m"; CY="\033[1;36m"; GR="\033[1;32m"; YE="\033[1;33m"; RD="\033[1;31m"; GY="\033[0;90m"
#printf "\033[1;36m"
#cat <<'ASCII'
#::::    ::::      :::     ::::::::::: :::      :::       :::  ::::::::  :::    :::::::::::
#+:+:+: :+:+:+   :+: :+:       :+:     :+:      :+:       :+: :+:    :+: :+:        :+:
#+:+ +:+:+ +:+  +:+   +:+      +:+     +:+      +:+       +:+ +:+    +:+ +:+        +:+
#+#+  +:+  +#+ +#++:++#++:     +#+     +#+      +#+  +:+  +#+ +#+    +:+ +#+        +#+
#+#+       +#+ +#+     +#+     +#+     +#+      +#+ +#+#+ +#+ +#+    +#+ +#+        +#+
##+#       #+# #+#     #+#     #+#     #+#       #+#+# #+#+#  #+#    #+# #+#        #+#
####       ### ###     ### ########### ########## ###   ###    ########  ########## ###
#ASCII
#printf "\033[0m\n"
#now="$(date '+%Y-%m-%d %H:%M:%S %Z')"
#fqdn="$(hostname -f 2>/dev/null || hostname)"
#ip_int="$(hostname -I 2>/dev/null | awk '{print $1}')"
#ip_ext=""; command -v curl >/dev/null 2>&1 && ip_ext="$(curl -s --max-time 1 https://ifconfig.me || true)"
#upt="$(uptime -p 2>/dev/null || true)"
#cores="$(nproc 2>/dev/null || echo -n '?')"
#load="$(awk '{print $1" / "$2" / "$3}' /proc/loadavg 2>/dev/null)"
#svc(){ systemctl is-active --quiet "$1" && echo -e "${GR}OK${NC}" || echo -e "${RD}FAIL${NC}"; }
#printf "${CY}Information as of:${NC} ${YE}%s${NC}\n" "$now"
#printf "${GY}FQDN   :${NC} %s\n" "$fqdn"
#if [ -n "$ip_ext" ]; then printf "${GY}IP     :${NC} %s ${GY}(ext:${NC} %s${GY})${NC}\n" "${ip_int:-?}" "$ip_ext"; else printf "${GY}IP     :${NC} %s\n" "${ip_int:-?}"; fi
#printf "${GY}Uptime :${NC} %s\n" "${upt:-?}"
#printf "${GY}Cores  :${NC} %s\n" "$cores"
#printf "${GY}Load   :${NC} %s (1/5/15)\n" "${load:-?}"
#printf "${GY}Svc    :${NC} postfix: $(svc postfix)  dovecot: $(svc dovecot)  nginx: $(svc nginx)  mariadb: $(svc mariadb)  redis: $(svc redis)\n"
#SH
#chmod +x /usr/local/bin/mw-motd
#
#if [[ -d /etc/update-motd.d ]]; then
#  cat >/etc/update-motd.d/10-mailwolt <<'SH'
##!/usr/bin/env bash
#/usr/local/bin/mw-motd
#SH
#  chmod +x /etc/update-motd.d/10-mailwolt
#  [[ -f /etc/update-motd.d/50-motd-news ]] && chmod -x /etc/update-motd.d/50-motd-news || true
#else
#  cat >/etc/profile.d/10-mailwolt-motd.sh <<'SH'
#case "$-" in *i*) /usr/local/bin/mw-motd ;; esac
#SH
#fi
#: > /etc/motd 2>/dev/null || true