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

# Usage:
#   scripts/register-guild-node.sh <node_id> <name> <endpoint>
# Example:
#   scripts/register-guild-node.sh guild-node-1 "Guild Node 1" "http://backend-guild:7002"

if [[ $# -ne 3 ]]; then
  echo "Usage: $0 <node_id> <name> <endpoint>" >&2
  exit 1
fi

NODE_ID="$1"
NODE_NAME="$2"
NODE_ENDPOINT="$3"

if ! command -v docker >/dev/null 2>&1; then
  echo "docker not found" >&2
  exit 1
fi

if ! docker compose ps backend-center >/dev/null 2>&1; then
  echo "backend-center service is not available in current docker compose project" >&2
  exit 1
fi

RESULT_JSON=$(docker compose exec -T \
  -e REG_NODE_ID="$NODE_ID" \
  -e REG_NODE_NAME="$NODE_NAME" \
  -e REG_NODE_ENDPOINT="$NODE_ENDPOINT" \
  backend-center node -e "
(async () => {
  const nodeId = process.env.REG_NODE_ID;
  const name = process.env.REG_NODE_NAME;
  const endpoint = process.env.REG_NODE_ENDPOINT;

  const res = await fetch('http://127.0.0.1:7001/api/nodes/register', {
    method: 'POST',
    headers: {
      'content-type': 'application/json',
      'x-fabric-version': '1',
    },
    body: JSON.stringify({ nodeId, name, endpoint }),
  });

  const text = await res.text();
  let data;
  try { data = JSON.parse(text); } catch { data = { raw: text }; }

  process.stdout.write(JSON.stringify({ status: res.status, data }));
})();
" )

STATUS=$(node -e "const o=JSON.parse(process.argv[1]);process.stdout.write(String(o.status));" "$RESULT_JSON")

if [[ "$STATUS" != "201" ]]; then
  echo "registration failed: $RESULT_JSON" >&2
  exit 1
fi

API_KEY=$(node -e "const o=JSON.parse(process.argv[1]);process.stdout.write(o.data?.apiKey||'');" "$RESULT_JSON")
NODE_ID_OUT=$(node -e "const o=JSON.parse(process.argv[1]);process.stdout.write(o.data?.node?.nodeId||'');" "$RESULT_JSON")

if [[ -z "$API_KEY" ]]; then
  echo "registration succeeded but no apiKey returned: $RESULT_JSON" >&2
  exit 1
fi

echo "Node registered: $NODE_ID_OUT"
echo "CENTER_API_KEY=$API_KEY"