#!/usr/bin/env bash
# Create LXC 7805 (sankofa-studio): FusionAI Creator stack (API + worker + services) for Sankofa Studio at https://studio.sankofa.nexus
# Usage: ./scripts/deployment/deploy-sankofa-studio-lxc.sh [--dry-run] [--skip-create]
#   --dry-run     Print commands only.
#   --skip-create Use existing container 7805 (only install Docker / compose / deploy app).
# Env: PROXMOX_HOST, NODE, VMID, HOSTNAME, IP_SANKOFA_STUDIO, REPO_URL or REPO_PATH, ENV_FILE.
# See: docs/03-deployment/SANKOFA_STUDIO_DEPLOYMENT.md

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROXMOX_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
IP_CONFIG_PATH="${IP_CONFIG_PATH:-}"
if [[ -n "$IP_CONFIG_PATH" && -f "$IP_CONFIG_PATH" ]]; then
  source "$IP_CONFIG_PATH" 2>/dev/null || true
elif [[ -f "$PROXMOX_ROOT/config/ip-addresses.conf" ]]; then
  source "$PROXMOX_ROOT/config/ip-addresses.conf" 2>/dev/null || true
elif [[ -f "$SCRIPT_DIR/../../config/ip-addresses.conf" ]]; then
  source "$SCRIPT_DIR/../../config/ip-addresses.conf" 2>/dev/null || true
fi

VMID="${VMID:-${SANKOFA_STUDIO_VMID:-7805}}"
HOSTNAME="${HOSTNAME:-sankofa-studio}"
IP="${IP_SANKOFA_STUDIO:-192.168.11.72}"
GATEWAY="${NETWORK_GATEWAY:-192.168.11.1}"
NETWORK="${NETWORK:-vmbr0}"
STORAGE="${STORAGE:-local-lvm}"
TEMPLATE="${TEMPLATE:-local:vztmpl/ubuntu-22.04-standard_22.04-1_amd64.tar.zst}"
MEMORY_MB="${MEMORY_MB:-8192}"
CORES="${CORES:-4}"
DISK_GB="${DISK_GB:-60}"
REPO_URL="${REPO_URL:-}"
REPO_PATH="${REPO_PATH:-}"
ENV_FILE="${ENV_FILE:-}"
APP_DIR="${APP_DIR:-/srv/fusionai-creator}"

PROXMOX_HOST="${PROXMOX_HOST:-}"
NODE="${NODE:-}"
SSH_OPTS="-o ConnectTimeout=15 -o StrictHostKeyChecking=accept-new"

DRY_RUN=false
SKIP_CREATE=false
for a in "$@"; do
  [[ "$a" == "--dry-run" ]] && DRY_RUN=true
  [[ "$a" == "--skip-create" ]] && SKIP_CREATE=true
done

run_cmd() {
  if [[ -n "$PROXMOX_HOST" ]]; then
    ssh $SSH_OPTS root@"$PROXMOX_HOST" "$@"
  else
    bash -c "$*"
  fi
}

run_pct() {
  local node_opt=""
  [[ -n "$NODE" && -z "$PROXMOX_HOST" ]] && node_opt="--node $NODE"
  if [[ -n "$PROXMOX_HOST" ]]; then
    ssh $SSH_OPTS root@"$PROXMOX_HOST" "pct $node_opt $*"
  else
    pct $node_opt "$@"
  fi
}

pct_exec() {
  run_pct "exec $VMID -- $*"
}

echo "=== Sankofa Studio LXC ($VMID) — $HOSTNAME ==="
echo "URL: https://studio.sankofa.nexus → http://${IP}:8000"
echo "IP: $IP | Memory: ${MEMORY_MB}MB | Cores: $CORES | Disk: ${DISK_GB}G"
echo ""

# pct runs only on Proxmox hosts; from another machine set PROXMOX_HOST to SSH there
if ! $DRY_RUN && [[ -z "${PROXMOX_HOST:-}" ]] && ! command -v pct &>/dev/null; then
  echo "ERROR: 'pct' not found. This script must run on a Proxmox host or with PROXMOX_HOST set."
  echo ""
  echo "From your current machine, run:"
  echo "  PROXMOX_HOST=192.168.11.11 REPO_URL='https://gitea.d-bis.org/d-bis/FusionAI-Creator.git' $0"
  echo ""
  echo "Or SSH to the Proxmox host and run the script there (with REPO_URL set)."
  exit 1
fi

if ! $SKIP_CREATE; then
  if $DRY_RUN; then
    echo "[DRY-RUN] Would create LXC $VMID with hostname=$HOSTNAME, ip=$IP/24 (Docker + FusionAI Creator)"
    exit 0
  fi

  if run_pct list 2>/dev/null | grep -q " $VMID "; then
    echo "Container $VMID already exists. Use --skip-create to only install/deploy app."
    exit 0
  fi

  echo "Creating CT $VMID ($HOSTNAME)..."
  node_opt=""
  [[ -n "$NODE" && -z "$PROXMOX_HOST" ]] && node_opt="--node $NODE"
  run_cmd "pct create $VMID $TEMPLATE \
    --hostname $HOSTNAME \
    --memory $MEMORY_MB \
    --cores $CORES \
    --rootfs $STORAGE:${DISK_GB} \
    --net0 name=eth0,bridge=$NETWORK,ip=$IP/24,gw=$GATEWAY \
    --nameserver ${DNS_PRIMARY:-1.1.1.1} \
    --description 'Sankofa Studio (FusionAI Creator) - studio.sankofa.nexus. See docs/03-deployment/SANKOFA_STUDIO_DEPLOYMENT.md' \
    --start 1 \
    --onboot 1 \
    --unprivileged 0 \
    --features nesting=1 \
    $node_opt"

  echo "Waiting for container to boot..."
  sleep 25
fi

if $DRY_RUN; then
  echo "[DRY-RUN] Would install Docker, clone/copy app, set .env, docker-compose up -d"
  exit 0
fi

echo "Installing Docker and Docker Compose..."
pct_exec "bash -c 'export DEBIAN_FRONTEND=noninteractive && apt-get update -qq && apt-get install -y -qq ca-certificates curl gnupg'"
# Docker repo: source os-release in same shell so \$ID and \$VERSION_CODENAME are set
pct_exec "bash -c 'source /etc/os-release; install -m 0755 -d /etc/apt/keyrings; curl -fsSL \"https://download.docker.com/linux/\$ID/gpg\" | gpg --batch --dearmor -o /etc/apt/keyrings/docker.gpg; chmod a+r /etc/apt/keyrings/docker.gpg'"
pct_exec "bash -c 'source /etc/os-release; echo \"deb [arch=\$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/\$ID \$VERSION_CODENAME stable\" | tee /etc/apt/sources.list.d/docker.list > /dev/null'"
pct_exec "bash -c 'apt-get update -qq && apt-get install -y -qq docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin git'"
pct_exec "systemctl enable docker && systemctl start docker"

if [[ -z "$REPO_URL" && -z "$REPO_PATH" ]]; then
  echo "REPO_URL or REPO_PATH not set. Skipping clone/copy. Create $APP_DIR and add docker-compose + .env manually, then run: docker compose -f $APP_DIR/docker-compose.yml up -d"
  exit 0
fi

pct_exec "mkdir -p $(dirname "$APP_DIR")"
if [[ -n "$REPO_PATH" && -d "$REPO_PATH" ]]; then
  echo "Copying repo from $REPO_PATH into container..."
  run_pct "push $VMID $REPO_PATH $APP_DIR"
elif [[ -n "$REPO_URL" ]]; then
  echo "Cloning $REPO_URL into container..."
  pct_exec "bash -c 'git clone --depth 1 \"$REPO_URL\" \"$APP_DIR\"'"
fi

if [[ -n "$ENV_FILE" && -f "$ENV_FILE" ]]; then
  echo "Pushing .env from $ENV_FILE..."
  run_pct "push $VMID $ENV_FILE $APP_DIR/.env"
fi

echo "Starting FusionAI Creator stack (docker compose up -d)..."
pct_exec "bash -c 'cd \"$APP_DIR\" && docker compose up -d'"

echo ""
echo "Done. Verify: curl -s http://${IP}:8000/health"
echo "Studio UI: http://${IP}:8000/studio/"
echo "Configure NPMplus: studio.sankofa.nexus -> http://${IP}:8000 (see SANKOFA_STUDIO_DEPLOYMENT.md)"