#!/bin/bash
# ============================================================================
# Aula 17 - Cleanup do CNPG
# ============================================================================
# Remove o cluster PostgreSQL, app demo, e o CNPG operator.
# ============================================================================

set -e

RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
CYAN='\033[0;36m'
NC='\033[0m'

log_info() { echo -e "${BLUE}[INFO]${NC} $1"; }
log_success() { echo -e "${GREEN}[OK]${NC} $1"; }
log_warn() { echo -e "${YELLOW}[WARN]${NC} $1"; }
log_error() { echo -e "${RED}[ERRO]${NC} $1"; }

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

echo ""
echo -e "${CYAN}╔═══════════════════════════════════════════════════════════╗${NC}"
echo -e "${CYAN}║  Cleanup - Aula 17 (CNPG)                                ║${NC}"
echo -e "${CYAN}╚═══════════════════════════════════════════════════════════╝${NC}"
echo ""
echo -e "${YELLOW}Isso vai remover:${NC}"
echo "  - App demo (cnpg namespace)"
echo "  - Cluster PostgreSQL shared-postgres"
echo "  - Secrets (credenciais S3, superuser)"
echo "  - ScheduledBackup"
echo "  - Namespace cnpg"
echo "  - CNPG Operator (cnpg-system namespace)"
echo ""
echo -e "${YELLOW}NÃO vai remover:${NC}"
echo "  - Backups no Hetzner Object Storage (permanecem no S3)"
echo "  - Victoria Metrics (aula-12)"
echo "  - PVCs (removidos junto com o cluster)"
echo ""
read -p "Confirmar remoção? (digite 'sim'): " confirm
if [[ "$confirm" != "sim" ]]; then
    echo "Cancelado."
    exit 0
fi

echo ""

# 1. Remover app demo
log_info "Removendo app demo..."
kubectl delete deployment pg-demo -n cnpg --ignore-not-found=true 2>/dev/null || true
kubectl delete service pg-demo -n cnpg --ignore-not-found=true 2>/dev/null || true
log_success "App demo removido"

# 2. Remover ScheduledBackup
log_info "Removendo backup agendado..."
kubectl delete scheduledbackup shared-postgres-backup -n cnpg --ignore-not-found=true 2>/dev/null || true
log_success "Backup agendado removido"

# 3. Remover Cluster PostgreSQL (isso também remove PVCs)
log_info "Removendo cluster PostgreSQL..."
kubectl delete cluster shared-postgres -n cnpg --ignore-not-found=true 2>/dev/null || true
log_info "Aguardando pods serem removidos..."
kubectl wait --for=delete cluster/shared-postgres -n cnpg --timeout=300s 2>/dev/null || true
log_success "Cluster removido"

# 4. Remover secrets
log_info "Removendo secrets..."
kubectl delete secret cnpg-backup-credentials -n cnpg --ignore-not-found=true 2>/dev/null || true
kubectl delete secret shared-postgres-superuser -n cnpg --ignore-not-found=true 2>/dev/null || true
log_success "Secrets removidos"

# 5. Remover namespace
log_info "Removendo namespace cnpg..."
kubectl delete namespace cnpg --ignore-not-found=true 2>/dev/null || true
log_success "Namespace cnpg removido"

# 6. Remover CNPG Operator
log_info "Removendo CNPG operator..."
helm uninstall cnpg -n cnpg-system --wait 2>/dev/null || true
kubectl delete namespace cnpg-system --ignore-not-found=true 2>/dev/null || true
log_success "CNPG operator removido"

# 7. Remover CRDs
log_info "Removendo CNPG CRDs..."
kubectl delete crd clusters.postgresql.cnpg.io backups.postgresql.cnpg.io scheduledbackups.postgresql.cnpg.io poolers.postgresql.cnpg.io imagecatalogs.postgresql.cnpg.io 2>/dev/null || true
log_success "CRDs removidos"

# 8. Remover .env
read -p "Remover arquivo .env? [s/N]: " remove_env
if [[ "$remove_env" == "s" || "$remove_env" == "S" ]]; then
    rm -f "${SCRIPT_DIR}/.env"
    log_success ".env removido"
fi

echo ""
echo -e "${GREEN}Cleanup concluído!${NC}"
echo ""
echo -e "${YELLOW}Lembrete:${NC} Backups no Hetzner Object Storage NÃO foram removidos."
echo "  Para remover: acesse o console Hetzner > Object Storage"
echo ""