// Copyright (C) 2017 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.findowners;

import static com.google.gerrit.server.change.RevisionResource.REVISION_KIND;

import com.google.common.collect.ImmutableSet;
import com.google.gerrit.extensions.annotations.Listen;
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.extensions.webui.JavaScriptPlugin;
import com.google.gerrit.extensions.webui.WebUiPlugin;
import com.google.gerrit.rules.PredicateProvider;
import com.google.gerrit.server.config.PluginConfig;
import com.google.gerrit.server.config.PluginConfigFactory;
import com.google.inject.AbstractModule;
import com.google.inject.Inject;

/** find-owners plugin module */
public class Module extends AbstractModule {
  /** Prolog Predicate Provider.  */
  @Listen
  static class FindOwnersProvider implements PredicateProvider {
    @Override
    public ImmutableSet<String> getPackages() {
      return ImmutableSet.of(Config.PROLOG_NAMESPACE);
    }
  }

  @Inject
  public Module(@PluginName String pluginName, PluginConfigFactory config) {
    // The 'true' parameter does not seem to reread gerrit.config on restart.
    PluginConfig c = config.getFromGerritConfig(pluginName, true);
    // TODO: get config parameters from plugin config file.
    Config.setVariables(config,
                        c.getBoolean(Config.ADD_DEBUG_MSG, false),
                        c.getInt(Config.MIN_OWNER_VOTE_LEVEL, 1),
                        c.getBoolean(Config.REPORT_SYNTAX_ERROR, false));
  }

  @Override
  protected void configure() {
    install(new RestApiModule() {
      @Override
      protected void configure() {
        post(REVISION_KIND, Config.PLUGIN_NAME).to(Action.class);
      }
    });
    DynamicSet.bind(binder(), WebUiPlugin.class)
        .toInstance(new JavaScriptPlugin(Config.PLUGIN_NAME + ".js"));
    DynamicSet.bind(binder(), PredicateProvider.class)
        .to(FindOwnersProvider.class);
  }
}