#!/bin/sh
# git-sync: bidirectional mirror between IONOS (git.plate-software.de) and TrueNAS Gitea
# IONOS = source of truth for cannamanage (Work Lumen pushes there)
# TrueNAS push mirror already handles TrueNAS → IONOS for homelab pushes
# This script handles the missing direction: IONOS → TrueNAS (pull mirror)

set -e

IONOS_TOKEN="${IONOS_TOKEN}"
TRUENAS_TOKEN="${TRUENAS_TOKEN}"
TRUENAS_HOST="${TRUENAS_HOST:-192.168.188.119:30008}"
IONOS_HOST="${IONOS_HOST:-git.plate-software.de}"
GITEA_USER="${GITEA_USER:-pplate}"
INTERVAL="${INTERVAL:-300}"  # 5 minutes default

WORKDIR="/tmp/git-sync"
mkdir -p "$WORKDIR"

sync_repo() {
  REPO="$1"
  echo "[$(date '+%Y-%m-%d %H:%M:%S')] Syncing $REPO ..."

  IONOS_URL="https://${GITEA_USER}:${IONOS_TOKEN}@${IONOS_HOST}/${GITEA_USER}/${REPO}.git"
  TRUENAS_URL="http://${GITEA_USER}:${TRUENAS_TOKEN}@${TRUENAS_HOST}/${GITEA_USER}/${REPO}.git"

  REPO_DIR="${WORKDIR}/${REPO}"

  # bare clone has HEAD file instead of .git directory
  if [ ! -f "${REPO_DIR}/HEAD" ]; then
    echo "  Cloning $REPO from IONOS..."
    git clone --mirror "$IONOS_URL" "$REPO_DIR"
    cd "$REPO_DIR"
    git remote add truenas "$TRUENAS_URL"
  else
    cd "$REPO_DIR"
    # Update remote URLs (tokens may rotate, protocol may change)
    git remote set-url origin "$IONOS_URL"
    git remote set-url truenas "$TRUENAS_URL" 2>/dev/null || git remote add truenas "$TRUENAS_URL"
    echo "  Fetching from IONOS..."
    git fetch --all --prune 2>&1 | tail -5
  fi

  echo "  Pushing to TrueNAS..."
  git push truenas --all --force 2>&1 | tail -5
  git push truenas --tags --force 2>&1 | tail -3
  echo "  Done."
}

# Repos to sync IONOS → TrueNAS
REPOS="${REPOS:-cannamanage}"

echo "=== git-sync starting, interval=${INTERVAL}s ==="
echo "Repos: $REPOS"

while true; do
  for REPO in $REPOS; do
    sync_repo "$REPO" || echo "[WARN] sync failed for $REPO — will retry next cycle"
  done
  echo "[$(date '+%Y-%m-%d %H:%M:%S')] Sleeping ${INTERVAL}s..."
  sleep "$INTERVAL"
done