// Copyright (C) 2018 The Android Open Source Project
//
// 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.

package com.googlesource.gerrit.plugins.simplesubmitrules;

import com.google.common.annotations.VisibleForTesting;
import com.google.gerrit.extensions.annotations.PluginName;
import com.google.gerrit.extensions.registration.DynamicSet;
import com.google.gerrit.extensions.restapi.RestApiModule;
import com.google.gerrit.server.config.PluginConfig;
import com.google.gerrit.server.config.PluginConfigFactory;
import com.google.gerrit.server.project.NoSuchProjectException;
import com.google.gerrit.server.project.ProjectResource;
import com.google.gerrit.server.query.change.ChangeData;
import com.google.gerrit.server.rules.SubmitRule;
import com.google.inject.AbstractModule;
import com.google.inject.Inject;
import com.googlesource.gerrit.plugins.simplesubmitrules.config.ConfigServlet;
import com.googlesource.gerrit.plugins.simplesubmitrules.config.ConfigTranslator;
import com.googlesource.gerrit.plugins.simplesubmitrules.rules.NoUnresolvedCommentsRule;
import com.googlesource.gerrit.plugins.simplesubmitrules.rules.RequireNonAuthorApprovalRule;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/** Bootstraps the Simple Submit Rules plugin */
public class SimpleSubmitRulesModule extends AbstractModule {
  private static final Logger log = LoggerFactory.getLogger(SimpleSubmitRulesModule.class);

  /** Name of this plugin, as defined in the BUILD file */
  @VisibleForTesting protected static final String PLUGIN_NAME = "simple-submit-rules";

  private static final String API_ENDPOINT = PLUGIN_NAME;
  private final PluginConfigFactory pluginConfigFactory;
  private final String pluginName;

  @Inject
  public SimpleSubmitRulesModule(
      PluginConfigFactory pluginConfigFactory, @PluginName String pluginName) {
    this.pluginConfigFactory = pluginConfigFactory;
    this.pluginName = pluginName;
  }

  @Override
  protected void configure() {
    bind(ConfigTranslator.class);

    install(
        new RestApiModule() {
          @Override
          protected void configure() {
            get(ProjectResource.PROJECT_KIND, API_ENDPOINT).to(ConfigServlet.class);
            put(ProjectResource.PROJECT_KIND, API_ENDPOINT).to(ConfigServlet.class);
          }
        });

    DynamicSet.bind(binder(), SubmitRule.class).to(RequireNonAuthorApprovalRule.class);
    DynamicSet.bind(binder(), SubmitRule.class).to(NoUnresolvedCommentsRule.class);
  }

  public PluginConfig getConfig(ChangeData changeData) {
    try {
      return pluginConfigFactory.getFromProjectConfig(changeData.project(), pluginName);
    } catch (NoSuchProjectException e) {
      log.error("Could not load plugin configuration", e);
      return null;
    }
  }
}