#!/usr/bin/env sh
set -eu

. /vault/secrets/keycloak-admin-env.sh

CLIENT_NAME="hermes-dashboard"
PUBLIC_URL="https://agent.bstein.dev"
KC_URL="http://keycloak.sso.svc.cluster.local"

ACCESS_TOKEN=""
for attempt in 1 2 3 4 5 6 7 8 9 10; do
  if curl -fsS "${KC_URL}/realms/master" >/dev/null 2>&1; then
    break
  fi
  echo "Waiting for Keycloak to be reachable (attempt ${attempt})" >&2
  sleep $((attempt * 2))
done

for attempt in 1 2 3 4 5; do
  TOKEN_JSON="$(curl -sS -X POST "$KC_URL/realms/master/protocol/openid-connect/token" \
    -H 'Content-Type: application/x-www-form-urlencoded' \
    -d "grant_type=password" \
    -d "client_id=admin-cli" \
    -d "username=${KEYCLOAK_ADMIN}" \
    -d "password=${KEYCLOAK_ADMIN_PASSWORD}" || true)"
  ACCESS_TOKEN="$(echo "$TOKEN_JSON" | jq -r '.access_token' 2>/dev/null || true)"
  if [ -n "$ACCESS_TOKEN" ] && [ "$ACCESS_TOKEN" != "null" ]; then
    break
  fi
  echo "Keycloak token request failed (attempt ${attempt})" >&2
  sleep $((attempt * 2))
done
if [ -z "$ACCESS_TOKEN" ] || [ "$ACCESS_TOKEN" = "null" ]; then
  echo "Failed to fetch Keycloak admin token" >&2
  exit 1
fi

client_payload="$(jq -nc \
  --arg client_id "${CLIENT_NAME}" \
  --arg redirect_uri "${PUBLIC_URL}/auth/callback" \
  --arg web_origin "${PUBLIC_URL}" \
  '{
    clientId:$client_id,
    enabled:true,
    protocol:"openid-connect",
    publicClient:true,
    standardFlowEnabled:true,
    implicitFlowEnabled:false,
    directAccessGrantsEnabled:false,
    serviceAccountsEnabled:false,
    redirectUris:[$redirect_uri],
    webOrigins:[$web_origin],
    rootUrl:$web_origin,
    baseUrl:"/",
    attributes:{
      "pkce.code.challenge.method":"S256",
      "post.logout.redirect.uris":$web_origin
    }
  }')"

CLIENT_QUERY="$(curl -sS -H "Authorization: Bearer ${ACCESS_TOKEN}" \
  "$KC_URL/admin/realms/atlas/clients?clientId=${CLIENT_NAME}" || true)"
CLIENT_ID="$(echo "$CLIENT_QUERY" | jq -r '.[0].id' 2>/dev/null || true)"

if [ -z "$CLIENT_ID" ] || [ "$CLIENT_ID" = "null" ]; then
  status="$(curl -sS -o /dev/null -w "%{http_code}" -X POST \
    -H "Authorization: Bearer ${ACCESS_TOKEN}" \
    -H 'Content-Type: application/json' \
    -d "${client_payload}" \
    "$KC_URL/admin/realms/atlas/clients")"
  if [ "$status" != "201" ] && [ "$status" != "204" ] && [ "$status" != "409" ]; then
    echo "Keycloak client create failed (status ${status})" >&2
    exit 1
  fi
  CLIENT_QUERY="$(curl -sS -H "Authorization: Bearer ${ACCESS_TOKEN}" \
    "$KC_URL/admin/realms/atlas/clients?clientId=${CLIENT_NAME}" || true)"
  CLIENT_ID="$(echo "$CLIENT_QUERY" | jq -r '.[0].id' 2>/dev/null || true)"
fi

if [ -z "$CLIENT_ID" ] || [ "$CLIENT_ID" = "null" ]; then
  echo "Keycloak client ${CLIENT_NAME} not found" >&2
  exit 1
fi

status="$(curl -sS -o /dev/null -w "%{http_code}" -X PUT \
  -H "Authorization: Bearer ${ACCESS_TOKEN}" \
  -H 'Content-Type: application/json' \
  -d "${client_payload}" \
  "$KC_URL/admin/realms/atlas/clients/${CLIENT_ID}")"
if [ "$status" != "204" ]; then
  echo "Keycloak client update failed (status ${status})" >&2
  exit 1
fi

SCOPE_ID="$(curl -sS -H "Authorization: Bearer ${ACCESS_TOKEN}" \
  "$KC_URL/admin/realms/atlas/client-scopes?search=groups" | jq -r '.[] | select(.name=="groups") | .id' 2>/dev/null | head -n1 || true)"
if [ -z "$SCOPE_ID" ] || [ "$SCOPE_ID" = "null" ]; then
  echo "Keycloak client scope groups not found" >&2
  exit 1
fi

DEFAULT_SCOPES="$(curl -sS -H "Authorization: Bearer ${ACCESS_TOKEN}" \
  "$KC_URL/admin/realms/atlas/clients/${CLIENT_ID}/default-client-scopes" || true)"
OPTIONAL_SCOPES="$(curl -sS -H "Authorization: Bearer ${ACCESS_TOKEN}" \
  "$KC_URL/admin/realms/atlas/clients/${CLIENT_ID}/optional-client-scopes" || true)"

if ! echo "$DEFAULT_SCOPES" | jq -e '.[] | select(.name=="groups")' >/dev/null 2>&1 \
  && ! echo "$OPTIONAL_SCOPES" | jq -e '.[] | select(.name=="groups")' >/dev/null 2>&1; then
  status="$(curl -sS -o /dev/null -w "%{http_code}" -X PUT \
    -H "Authorization: Bearer ${ACCESS_TOKEN}" \
    "$KC_URL/admin/realms/atlas/clients/${CLIENT_ID}/optional-client-scopes/${SCOPE_ID}")"
  if [ "$status" != "200" ] && [ "$status" != "201" ] && [ "$status" != "204" ]; then
    status="$(curl -sS -o /dev/null -w "%{http_code}" -X POST \
      -H "Authorization: Bearer ${ACCESS_TOKEN}" \
      "$KC_URL/admin/realms/atlas/clients/${CLIENT_ID}/optional-client-scopes/${SCOPE_ID}")"
    if [ "$status" != "200" ] && [ "$status" != "201" ] && [ "$status" != "204" ]; then
      echo "Failed to attach groups client scope to ${CLIENT_NAME} (status ${status})" >&2
      exit 1
    fi
  fi
fi

echo "Hermes dashboard OIDC client ready"
