#!/usr/bin/env bash
# load-v3.sh — one-time migration: import the v2 base into v3, push it, and deploy
# v3 IN PLACE of v2 (same host port, same container name, same live-state volume).
#
# Run on hal-blackpearl:   bash load-v3.sh
# If the push step needs credentials:   GITEA_TOKEN=<your token> bash load-v3.sh
#
# Rollback at any time:    cd ~/newbury-exhibit && docker compose up -d --build
set -e
GITEA_HOST="gitea.hideawaygaming.com.au"
V2_URL="https://${GITEA_HOST}/jessikitty/newbury-exhibit-v2.git"
V3_URL="https://${GITEA_HOST}/jessikitty/newbury-exhibit-v3.git"
DIR="$HOME/newbury-exhibit-v3"
OLD="$HOME/newbury-exhibit"

# 1) clone or update v3
if [ ! -d "$DIR/.git" ]; then git clone "$V3_URL" "$DIR"; fi
cd "$DIR"
git fetch origin && git reset --hard origin/main

# 2) import unchanged v2 base files (only ones v3 doesn't already define),
#    then PUSH — required, so future `deploy.sh` hard-resets keep the base.
if [ ! -f server/server.js ]; then
  echo "== importing v2 base files =="
  TMP="$(mktemp -d)"
  git clone --depth 1 "$V2_URL" "$TMP/v2"
  rm -rf "$TMP/v2/.git"
  rm -f "$TMP"/v2/*.bat            # v2-era upload helpers target the old repo
  if command -v rsync >/dev/null 2>&1; then
    rsync -a --ignore-existing "$TMP/v2/" "$DIR/"
  else
    cp -rn "$TMP/v2/." "$DIR/"
  fi
  rm -rf "$TMP"
  git add -A
  git -c user.name="load-v3" -c user.email="load-v3@local" commit -m "Import v2 base (unchanged files)"
  if [ -n "$GITEA_TOKEN" ]; then
    git push "https://jessikitty:${GITEA_TOKEN}@${GITEA_HOST}/jessikitty/newbury-exhibit-v3.git" main:main
  else
    if ! git push origin main; then
      echo ""
      echo "!! Push failed (no credentials on this machine)."
      echo "!! Re-run as:  GITEA_TOKEN=your-api-token bash load-v3.sh"
      echo "!! Not deploying yet — deploy.sh hard-resets to origin/main, so the"
      echo "!! base import must be on the remote first."
      exit 1
    fi
  fi
fi

# 3) carry deployment config + locally-dropped OBJ models over from v2
if [ -f "$OLD/.env" ]; then cp -n "$OLD/.env" .env 2>/dev/null || true
elif [ ! -f .env ]; then cp .env.example .env; fi
if [ -d "$OLD/public/models" ]; then
  mkdir -p public/models
  cp -an "$OLD/public/models/." public/models/ 2>/dev/null || true
fi

# 4) swap containers in place. Same compose project name => same container,
#    ports, and exhibit-live volume; live state carries over automatically.
if [ -d "$OLD" ]; then (cd "$OLD" && docker compose down) || true; fi
docker compose up -d --build
docker image prune -f >/dev/null
echo ""
echo "v3 is live at the same address (host port unchanged)."
echo "Future deploys:  cd $DIR && bash deploy.sh"
echo "Rollback:        cd $OLD && docker compose up -d --build"