#!/usr/bin/env bash
# ==============================================================================
# Radio Chicken Migration Script: Host Docker -> Kubernetes Cluster (htpc namespace)
# ==============================================================================
set -euo pipefail

CLUSTER_HOST="10.2.0.4"
SSH_USER="bart"
HTPC_NS="htpc"
BACKUP_DIR="/storage/backups"
DATE_STR=$(date +%Y-%m-%d)
KUBECONFIG_PATH="${KUBECONFIG:-$HOME/.kube/config_vmserver}"

COLOR_GREEN="\033[0;32m"
COLOR_YELLOW="\033[1;33m"
COLOR_RED="\033[0;31m"
COLOR_BLUE="\033[0;34m"
COLOR_RESET="\033[0m"

log_info() { echo -e "${COLOR_GREEN}[INFO]${COLOR_RESET} $1"; }
log_step() { echo -e "\n${COLOR_BLUE}==>${COLOR_RESET} ${COLOR_GREEN}$1${COLOR_RESET}"; }
log_warn() { echo -e "${COLOR_YELLOW}[WARN]${COLOR_RESET} $1"; }
log_err()  { echo -e "${COLOR_RED}[ERROR]${COLOR_RESET} $1"; }

echo "========================================================================"
echo " RADIO CHICKEN MIGRATIE NAAR KUBERNETES CLUSTER (NAMESPACE: ${HTPC_NS})"
echo "========================================================================"
echo "Bron:       Standalone Docker containers op ${CLUSTER_HOST}"
echo "            (barttradio, icecast, autoplacer, mv_downloader)"
echo "Config:     /home/bart/jellyfinradio/{data,webroot,icecast.xml}"
echo "Videos:     /home/bart/jellyfinradio/music_videos -> /datadisk/htpc/music_video"
echo "Doel:       K8s Pod 'radio-chicken' in namespace '${HTPC_NS}'"
echo "Poorten:    5000 (Web UI / API / WS) & 8000 (Icecast Streams)"
echo "Transcode:  AMD VA-API (/dev/dri/renderD128)"
echo "========================================================================"
echo ""

read -p "Weet je zeker dat je de Radio Chicken migratie naar Kubernetes wilt starten? (j/N): " -r CONFIRM
if [[ ! "$CONFIRM" =~ ^[jJyY]$ ]]; then
    log_info "Migratie geannuleerd."
    exit 0
fi

# ------------------------------------------------------------------------------
# STAP 1: PRE-FLIGHT CHECKS
# ------------------------------------------------------------------------------
log_step "1. Pre-flight checks uitvoeren..."

log_info "Verbinding testen naar host (${CLUSTER_HOST})..."
ssh -o BatchMode=yes -o ConnectTimeout=5 "${SSH_USER}@${CLUSTER_HOST}" "true" || {
    log_err "Kan niet verbinden met host (${CLUSTER_HOST}) via SSH."
    exit 1
}

log_info "Controleren van KUBECONFIG verbinding..."
KUBECONFIG="${KUBECONFIG_PATH}" kubectl get nodes | grep -q "vmserver" || {
    log_err "Kan vmserver node niet bereiken via kubectl (KUBECONFIG=${KUBECONFIG_PATH})!"
    exit 1
}

# ------------------------------------------------------------------------------
# STAP 2: RESERVEKOPIE MAKEN VAN BESTAANDE DATA OP DE HOST
# ------------------------------------------------------------------------------
log_step "2. Reservekopie maken van /home/bart/jellyfinradio/data op ${CLUSTER_HOST}..."
ssh "${SSH_USER}@${CLUSTER_HOST}" "
    mkdir -p '${BACKUP_DIR}'
    if [ -d '/home/bart/jellyfinradio/data' ]; then
        echo 'Inpakken van Radio Chicken data naar ${BACKUP_DIR}/radio_chicken_backup_${DATE_STR}.tar.gz...'
        tar -czf '${BACKUP_DIR}/radio_chicken_backup_${DATE_STR}.tar.gz' \
            -C /home/bart/jellyfinradio data webroot
        echo 'Backup gereed:'
        ls -lh '${BACKUP_DIR}/radio_chicken_backup_${DATE_STR}.tar.gz'
    else
        echo 'Geen bestaande data directory gevonden in /home/bart/jellyfinradio/data.'
    fi
"

# ------------------------------------------------------------------------------
# STAP 3: DOWNLOADS SYNCRHONISEREN NAAR /datadisk/htpc/music_video
# ------------------------------------------------------------------------------
log_step "3. Pas gedownloade videoclips samenvoegen naar /datadisk/htpc/music_video..."
ssh "${SSH_USER}@${CLUSTER_HOST}" "
    if [ -d '/home/bart/jellyfinradio/music_videos' ]; then
        echo 'Kopiëren van unieke videobestanden en NFOs naar /datadisk/htpc/music_video/...'
        cp -rn /home/bart/jellyfinradio/music_videos/* /datadisk/htpc/music_video/ 2>/dev/null || true
        echo 'Synchronisatie voltooid.'
    fi
"

# ------------------------------------------------------------------------------
# STAP 4: STANDALONE DOCKER CONTAINERS STOPPEN OP DE HOST
# ------------------------------------------------------------------------------
log_step "4. Standalone Docker containers stoppen op ${CLUSTER_HOST}..."
ssh "${SSH_USER}@${CLUSTER_HOST}" "
    echo '--> Stoppen van barttradio, radio_chicken_autoplacer, radio_chicken_mv_downloader, icecast...'
    docker stop barttradio radio_chicken_autoplacer radio_chicken_mv_downloader icecast 2>/dev/null || true
"

# ------------------------------------------------------------------------------
# STAP 5: KUBERNETES MANIFESTS TOEPASSEN
# ------------------------------------------------------------------------------
log_step "5. Kubernetes manifests toepassen..."
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
KUBECONFIG="${KUBECONFIG_PATH}" kubectl apply -k "${SCRIPT_DIR}/k8s/"

log_info "Wachten op succesvolle uitrol van Radio Chicken pod..."
KUBECONFIG="${KUBECONFIG_PATH}" kubectl rollout status deployment/radio-chicken -n "${HTPC_NS}" --timeout=300s

# ------------------------------------------------------------------------------
# STAP 6: VERIFICATIE
# ------------------------------------------------------------------------------
log_step "6. Verificatie van endpoints..."

log_info "Controleren van Icecast stream endpoint (poort 8000)..."
if curl -s -f -o /dev/null "http://${CLUSTER_HOST}:8000/status-json.xsl"; then
    log_info "✅ Icecast reageert succesvol op http://${CLUSTER_HOST}:8000/status-json.xsl"
else
    log_warn "⚠️ Icecast status kon niet worden opgevraagd op poort 8000."
fi

log_info "Controleren van Radio Chicken web/live endpoint (poort 5000)..."
if curl -s -f -o /dev/null "http://${CLUSTER_HOST}:5000/live"; then
    log_info "✅ Radio Chicken web interface reageert succesvol op http://${CLUSTER_HOST}:5000/live"
else
    log_warn "⚠️ Radio Chicken web interface reageert nog niet direct op poort 5000."
fi

log_info "Controleren van Apache reverse proxy (https://thuus.bnhmeijer.nl/radio/live)..."
HTTP_CODE=$(curl -s -k -o /dev/null -w "%{http_code}" "https://thuus.bnhmeijer.nl/radio/live" || true)
if [ "$HTTP_CODE" = "200" ]; then
    log_info "✅ Apache reverse proxy routeert succesvol naar Radio Chicken (/radio/live) [HTTP 200]"
else
    log_warn "⚠️ Apache reverse proxy gaf HTTP status: ${HTTP_CODE} voor /radio/live."
fi

echo ""
echo "========================================================================"
log_info "Migratie van Radio Chicken naar Kubernetes is succesvol voltooid!"
echo "========================================================================"