#!/usr/bin/env bash
# ==============================================================================
# HEALTHAI-SAAS — Sunucu temizleme scripti (uzakta calistirilir)
#
# Bu scripti SUNUCUDA root olarak calistir:
#   curl -fsSL https://uninstall.makdos.work | sudo bash
# veya:
#   wget -qO- https://uninstall.makdos.work | sudo bash
#
# Yapilanlar:
#   1. healthai-saas servislerini durdur (api, wa-server, telegram)
#   2. healthai-saas DEB paketi purge (--autoremove)
#   3. PostgreSQL 18 / Valkey / Nginx / certbot paketleri purge
#   4. /opt/healthai-saas /etc/healthai-saas /var/{log,lib}/healthai-saas sil
#   5. /var/lib/postgresql /var/lib/valkey /var/lib/meilisearch sil
#   6. Let's Encrypt sertifikalari sil (/etc/letsencrypt)
#   7. systemd unit'ler + nginx site'lari sil
#   8. healthai-saas + meilisearch + postgres user'lari sil
#   9. /etc/hosts override'lari temizle
#
# Onay sormaz — calistirildigi anda direkt temizler.
# ==============================================================================
set +e

if [[ $EUID -ne 0 ]]; then
  echo "Root olarak calistir: sudo bash $0" >&2
  exit 1
fi

# Renkler
if [ -t 1 ]; then
  C_RESET=$'\033[0m'; C_BOLD=$'\033[1m'
  C_RED=$'\033[1;31m'; C_GREEN=$'\033[1;32m'
  C_YELLOW=$'\033[1;33m'; C_BLUE=$'\033[1;34m'
else
  C_RESET=""; C_BOLD=""; C_RED=""; C_GREEN=""; C_YELLOW=""; C_BLUE=""
fi

log() { printf "${C_BLUE}[uninstall]${C_RESET} %s\n" "$*"; }
ok()  { printf "${C_GREEN}[ok]${C_RESET} %s\n" "$*"; }

cat <<EOF

${C_RED}${C_BOLD}╔══════════════════════════════════════════════════════════════╗${C_RESET}
${C_RED}${C_BOLD}║   TEMIZLENIYOR: healthai-saas + DB + cache + nginx + ssl     ║${C_RESET}
${C_RED}${C_BOLD}╚══════════════════════════════════════════════════════════════╝${C_RESET}

EOF

# === 1. Servisleri durdur ===
log "Servisler durduruluyor..."
for svc in healthai-saas-api healthai-saas-wa-server healthai-saas-telegram \
           meilisearch valkey-server redis-server nginx postgresql; do
  systemctl stop "$svc" 2>/dev/null
  systemctl disable "$svc" 2>/dev/null
done
ok "Servisler durduruldu"

# === 2. healthai-saas paketi purge ===
log "healthai-saas paketi kaldiriliyor..."
DEBIAN_FRONTEND=noninteractive apt-get purge -y --autoremove healthai-saas 2>&1 | tail -2
ok "healthai-saas purge"

# === 3. Altyapi paketleri purge ===
log "PostgreSQL + Valkey + Nginx + certbot kaldiriliyor..."
DEBIAN_FRONTEND=noninteractive apt-get purge -y --autoremove \
  postgresql-18 postgresql-18-pgvector postgresql-contrib-18 \
  postgresql-common postgresql-client-common \
  valkey-server redis-server \
  nginx nginx-common \
  certbot python3-certbot-nginx 2>&1 | tail -2
DEBIAN_FRONTEND=noninteractive apt-get autoremove -y 2>&1 | tail -1
ok "Altyapi paketleri purge"

# === 4. Uygulama dosyalari ===
log "Uygulama dosyalari siliniyor..."
rm -rf /opt/healthai-saas
rm -rf /etc/healthai-saas
rm -rf /var/log/healthai-saas
rm -rf /var/lib/healthai-saas
ok "Uygulama dizinleri silindi"

# === 5. Altyapi veri dizinleri ===
log "Veritabani/cache dizinleri siliniyor..."
rm -rf /var/lib/postgresql
rm -rf /var/lib/valkey
rm -rf /var/lib/meilisearch
rm -rf /etc/postgresql
rm -rf /etc/valkey
ok "Veri dizinleri silindi"

# === 6. Let's Encrypt ===
log "Let's Encrypt sertifikalari siliniyor..."
rm -rf /etc/letsencrypt
ok "LE sertifikalar silindi"

# === 7. systemd + nginx ===
log "systemd unit'leri ve nginx config'i siliniyor..."
rm -f /etc/systemd/system/meilisearch.service
rm -f /etc/systemd/system/healthai-saas-*.service
rm -rf /etc/nginx
rm -f /usr/local/bin/meilisearch
systemctl daemon-reload 2>/dev/null
ok "systemd + nginx config silindi"

# === 8. Kullanicilar ===
log "Kullanicilar siliniyor..."
userdel -r healthai-saas 2>/dev/null
userdel -r meilisearch 2>/dev/null
userdel -r postgres 2>/dev/null
ok "Kullanicilar silindi"

# === 9. /etc/hosts ve gecici dosyalar ===
log "/etc/hosts ve /tmp temizleniyor..."
sed -i '/install.makdos.work/d; /saas-test/d; /saas-cust/d; /saas-dev/d' /etc/hosts 2>/dev/null
rm -rf /tmp/healthai-install-* /tmp/healthai-saas* /tmp/h.sh /tmp/install.sh
ok "Hosts + tmp temizlendi"

# === Sonuc ===
cat <<EOF

${C_GREEN}${C_BOLD}╔══════════════════════════════════════════════════════════════╗${C_RESET}
${C_GREEN}${C_BOLD}║       ✓  SUNUCU TEMIZLENDI — Sifir durumda  ✓               ║${C_RESET}
${C_GREEN}${C_BOLD}╚══════════════════════════════════════════════════════════════╝${C_RESET}

Dogrulama:
  dpkg -l healthai-saas        : $(dpkg -l healthai-saas 2>&1 | tail -1 | head -c 60)
  /opt/healthai-saas           : $([ -d /opt/healthai-saas ] && echo "MEVCUT" || echo "yok")
  /etc/healthai-saas           : $([ -d /etc/healthai-saas ] && echo "MEVCUT" || echo "yok")
  healthai-saas user           : $(id healthai-saas 2>&1 | head -c 80)
  nginx                        : $(command -v nginx >/dev/null && echo "MEVCUT" || echo "yok")
  postgresql                   : $(command -v psql >/dev/null && echo "MEVCUT" || echo "yok")

Tekrar kurmak icin:
  curl -fsSL https://install.makdos.work | sudo bash

Destek: destek@makdos.work
EOF