#!/usr/bin/env bash
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
cd "$SCRIPT_DIR"

# Source .env for credentials
if [ -f ".env" ]; then
  set -a
  source .env
  set +a
fi

if [ -z "${GITEA_PASSWORD:-}" ]; then
  echo "[$(date -Iseconds)] ERROR: GITEA_PASSWORD is not set. Exiting."
  exit 1
fi

# Configure the remote with credentials for non-interactive pulls
REMOTE_BASE="https://gitea.ct.cozytren.ch/romane/agentbox-test"
REMOTE_AUTH="https://agentbox:${GITEA_PASSWORD}@gitea.ct.cozytren.ch/romane/agentbox-test"
git remote set-url origin "$REMOTE_AUTH"

LAST_HASH=""

echo "[$(date -Iseconds)] Starting watch loop (polling every 20s)..."

while true; do
  # Fetch latest from remote
  git fetch origin main 2>&1 || {
    echo "[$(date -Iseconds)] WARN: git fetch failed, retrying in 20s..."
    sleep 20
    continue
  }

  REMOTE_HASH=$(git rev-parse origin/main 2>/dev/null || echo "")

  if [ -z "$REMOTE_HASH" ]; then
    echo "[$(date -Iseconds)] WARN: could not resolve origin/main, retrying in 20s..."
    sleep 20
    continue
  fi

  if [ "$REMOTE_HASH" != "$LAST_HASH" ]; then
    if [ -n "$LAST_HASH" ]; then
      echo "[$(date -Iseconds)] New commits detected! Updating..."
      echo "  Previous: $LAST_HASH"
      echo "  Current:  $REMOTE_HASH"

      git pull origin main 2>&1 || {
        echo "[$(date -Iseconds)] ERROR: git pull failed, retrying in 20s..."
        LAST_HASH=""
        sleep 20
        continue
      }

      echo "[$(date -Iseconds)] Bringing containers down..."
      docker compose down 2>&1

      echo "[$(date -Iseconds)] Building images..."
      docker compose build 2>&1

      echo "[$(date -Iseconds)] Starting containers..."
      docker compose up -d 2>&1

      echo "[$(date -Iseconds)] Update complete."
    else
      echo "[$(date -Iseconds)] Initial state recorded: $REMOTE_HASH"
    fi
    LAST_HASH="$REMOTE_HASH"
  else
    echo "[$(date -Iseconds)] No changes."
  fi

  sleep 20
done