// 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.ratelimiter;

import static com.google.gerrit.sshd.CommandMetaData.Mode.MASTER_OR_SLAVE;
import static com.googlesource.gerrit.plugins.ratelimiter.Module.UPLOAD_PACK_PER_HOUR;

import com.google.gerrit.common.data.GlobalCapability;
import com.google.gerrit.extensions.annotations.RequiresCapability;
import com.google.gerrit.sshd.AdminHighPriorityCommand;
import com.google.gerrit.sshd.CommandMetaData;
import com.google.gerrit.sshd.SshCommand;
import com.google.inject.Inject;

@AdminHighPriorityCommand
@RequiresCapability(GlobalCapability.ADMINISTRATE_SERVER)
@CommandMetaData(
    name = "list",
    description = "Display rate limits statistics",
    runsAt = MASTER_OR_SLAVE)
final class ListCommand extends SshCommand {
  private static final String DASHED_LINE =
      "---------------------------------------------------------------------------------------------";
  private final RateLimiterProcessing rateLimiterProcessing;

  static final String FORMAT = "%-26s %-17s %-19s %-15s %s";

  @Inject
  ListCommand(RateLimiterProcessing rateLimiterProcessing) {
    this.rateLimiterProcessing = rateLimiterProcessing;
  }

  @Override
  protected void run() throws UnloggedFailure {
    try {
      stdout.println(DASHED_LINE);
      stdout.println("* " + UPLOAD_PACK_PER_HOUR + " *");
      stdout.println(DASHED_LINE);
      stdout.println(
          String.format(
              FORMAT,
              "Account Id/IP (username)",
              "Permits Per Hour",
              "Available Permits",
              "Used Permits",
              "Replenish in"));
      stdout.println(DASHED_LINE);
      stdout.println(rateLimiterProcessing.listPermits());
      stdout.println(DASHED_LINE);
    } catch (Exception e) {
      throw die(e);
    }
  }
}