/*
    * #%L
    * wcm.io
    * %%
    * Copyright (C) 2025 wcm.io
    * %%
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   * #L%
   */
  package io.wcm.tooling.commons.packmgr.httpaction;
  
  import java.io.IOException;
  
  import org.apache.http.HttpStatus;
  import org.apache.http.client.methods.CloseableHttpResponse;
  import org.apache.http.client.methods.HttpGet;
  import org.apache.http.client.protocol.HttpClientContext;
  import org.apache.http.impl.client.CloseableHttpClient;
  import org.apache.http.util.EntityUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import com.fasterxml.jackson.core.JsonProcessingException;
  import com.fasterxml.jackson.databind.json.JsonMapper;
  
  import io.wcm.tooling.commons.packmgr.PackageManagerHttpActionException;
  
  /**
   * Get bundle status from web console.
   */
  public final class SystemReadyStatusCall implements HttpCall<SystemReadyStatus> {
  
    private final CloseableHttpClient httpClient;
    private final HttpClientContext context;
    private final String systemReadyURL;
  
    private static final Logger log = LoggerFactory.getLogger(SystemReadyStatusCall.class);
    private static final JsonMapper JSON_MAPPER = JsonMapper.builder().build();
  
    /**
     * @param httpClient HTTP client
     * @param context HTTP client context
     * @param systemReadyURL System ready URL
     */
    public SystemReadyStatusCall(CloseableHttpClient httpClient, HttpClientContext context, String systemReadyURL) {
      this.httpClient = httpClient;
      this.context = context;
      this.systemReadyURL = systemReadyURL;
    }
  
    @Override
    public SystemReadyStatus execute() {
      log.debug("Call URL: {}", systemReadyURL);
  
      HttpGet method = new HttpGet(systemReadyURL);
      try (CloseableHttpResponse response = httpClient.execute(method, context)) {
  
        String responseString = EntityUtils.toString(response.getEntity());
        switch (response.getStatusLine().getStatusCode()) {
          case HttpStatus.SC_OK, HttpStatus.SC_INTERNAL_SERVER_ERROR, HttpStatus.SC_SERVICE_UNAVAILABLE:
            return toSystemReadyStatus(responseString, systemReadyURL);
          case HttpStatus.SC_NOT_FOUND:
            // AEM version that does not support system ready endpoint - accept as valid response
            return new SystemReadyStatus(null, null);
          default:
            throw PackageManagerHttpActionException.forHttpError(systemReadyURL, response.getStatusLine(), responseString);
        }
      }
      catch (IOException ex) {
        throw PackageManagerHttpActionException.forIOException(systemReadyURL, ex);
      }
    }
  
    static SystemReadyStatus toSystemReadyStatus(String jsonString, String systemReadyURL) {
      try {
        return JSON_MAPPER.readValue(jsonString, SystemReadyStatus.class);
      }
      catch (JsonProcessingException ex) {
        throw PackageManagerHttpActionException.forJSONException(systemReadyURL, jsonString, ex);
      }
    }
  
  }