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/*
 * Copyright (C) Gustav Karlsson
 *
 * 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.github.kagkarlsson.examples.boot.config;

import static com.github.kagkarlsson.scheduler.task.schedule.Schedules.fixedDelay;

import com.github.kagkarlsson.examples.boot.CounterService;
import com.github.kagkarlsson.examples.boot.ExampleContext;
import com.github.kagkarlsson.scheduler.task.Task;
import com.github.kagkarlsson.scheduler.task.TaskWithoutDataDescriptor;
import com.github.kagkarlsson.scheduler.task.helper.Tasks;
import java.time.Duration;
import java.time.Instant;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import utils.EventLogger;

@Configuration
public class BasicExamplesConfiguration {

  public static final TaskWithoutDataDescriptor BASIC_ONE_TIME_TASK =
      new TaskWithoutDataDescriptor("sample-one-time-task");
  public static final TaskWithoutDataDescriptor BASIC_RECURRING_TASK =
      new TaskWithoutDataDescriptor("recurring-sample-task");
  private static final Logger log = LoggerFactory.getLogger(BasicExamplesConfiguration.class);
  private static int ID = 1;

  /** Start the example */
  public static void triggerOneTime(ExampleContext ctx) {
    ctx.log(
        "Scheduling a basic one-time task to run 'Instant.now()+seconds'. If seconds=0, the scheduler will pick "
            + "these up immediately since it is configured with 'immediate-execution-enabled=true'");

    ctx.schedulerClient.schedule(BASIC_ONE_TIME_TASK.instance(String.valueOf(ID++)), Instant.now());
  }

  /**
   * Define a recurring task with a dependency, which will automatically be picked up by the Spring
   * Boot autoconfiguration.
   */
  @Bean
  Task recurringSampleTask(CounterService counter) {
    return Tasks.recurring(BASIC_RECURRING_TASK, fixedDelay(Duration.ofMinutes(1)))
        .execute(
            (instance, ctx) -> {
              log.info("Running recurring-simple-task. Instance: {}, ctx: {}", instance, ctx);
              counter.increase();
              EventLogger.logTask(
                  BASIC_RECURRING_TASK, "Ran. Run-counter current-value=" + counter.read());
            });
  }

  /** Define a one-time task which have to be manually scheduled. */
  @Bean
  Task sampleOneTimeTask() {
    return Tasks.oneTime(BASIC_ONE_TIME_TASK)
        .execute(
            (instance, ctx) -> {
              log.info("I am a one-time task!");
            });
  }
}