/*
    * The MIT License (MIT)
    *
    * Copyright (c) 2013-2026 The Coveralls Maven Plugin Project Contributors:
    *     https://github.com/hazendaz/coveralls-maven-plugin/graphs/contributors
    *
    * Permission is hereby granted, free of charge, to any person obtaining a copy
    * of this software and associated documentation files (the "Software"), to deal
    * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  package org.eluder.coveralls.maven.plugin.json;
  
  import com.fasterxml.jackson.core.JsonEncoding;
  import com.fasterxml.jackson.core.JsonGenerator;
  import com.fasterxml.jackson.core.JsonProcessingException;
  import com.fasterxml.jackson.databind.MappingJsonFactory;
  
  import java.io.Closeable;
  import java.io.File;
  import java.io.IOException;
  import java.time.Instant;
  import java.time.ZoneId;
  import java.time.format.DateTimeFormatter;
  import java.util.Map.Entry;
  import java.util.Properties;
  
  import org.eluder.coveralls.maven.plugin.ProcessingException;
  import org.eluder.coveralls.maven.plugin.domain.Job;
  import org.eluder.coveralls.maven.plugin.domain.Source;
  import org.eluder.coveralls.maven.plugin.source.SourceCallback;
  
  /**
   * The Class JsonWriter.
   */
  public class JsonWriter implements SourceCallback, Closeable {
  
      /** The Constant TIMESTAMP_FORMAT. */
      protected static final String TIMESTAMP_FORMAT = "yyyy-MM-dd HH:mm:ss Z";
  
      /** The job. */
      private final Job job;
  
      /** The coveralls file. */
      private final File coverallsFile;
  
      /** The generator. */
      private final JsonGenerator generator;
  
      /**
       * Instantiates a new json writer.
       *
       * @param job
       *            the job
       * @param coverallsFile
       *            the coveralls file
       *
       * @throws IOException
       *             Signals that an I/O exception has occurred.
       */
      public JsonWriter(final Job job, final File coverallsFile) throws IOException {
          final var directory = coverallsFile.getParentFile();
          if (!directory.exists()) {
              directory.mkdirs();
          }
          this.job = job;
          this.coverallsFile = coverallsFile;
          this.generator = new MappingJsonFactory().createGenerator(coverallsFile, JsonEncoding.UTF8);
      }
  
      /**
       * Gets the job.
       *
       * @return the job
       */
      public final Job getJob() {
          return this.job;
      }
  
      /**
       * Gets the coveralls file.
       *
       * @return the coveralls file
       */
      public final File getCoverallsFile() {
          return this.coverallsFile;
     }
 
     @Override
     public void onBegin() throws ProcessingException, IOException {
         try {
             this.generator.writeStartObject();
             this.writeOptionalString("repo_token", this.job.getRepoToken());
             this.writeOptionalString("service_name", this.job.getServiceName());
             this.writeOptionalString("service_job_id", this.job.getServiceJobId());
             this.writeOptionalString("service_number", this.job.getServiceBuildNumber());
             this.writeOptionalString("service_build_url", this.job.getServiceBuildUrl());
             this.writeOptionalString("service_branch", this.job.getBranch());
             this.writeOptionalString("service_pull_request", this.job.getPullRequest());
             this.writeOptionalBoolean("parallel", this.job.isParallel());
             this.writeOptionalTimestamp("run_at", this.job.getTimestamp());
             this.writeOptionalEnvironment("environment", this.job.getServiceEnvironment());
             this.writeOptionalObject("git", this.job.getGit());
             this.generator.writeArrayFieldStart("source_files");
         } catch (final JsonProcessingException e) {
             throw new ProcessingException(e);
         }
     }
 
     @Override
     public void onSource(final Source source) throws ProcessingException, IOException {
         try {
             this.generator.writeObject(source);
         } catch (final JsonProcessingException e) {
             throw new ProcessingException(e);
         }
     }
 
     @Override
     public void onComplete() throws ProcessingException, IOException {
         try {
             this.generator.writeEndArray();
             this.generator.writeEndObject();
         } catch (final JsonProcessingException e) {
             throw new ProcessingException(e);
         }
     }
 
     @Override
     public void close() throws IOException {
         this.generator.close();
     }
 
     /**
      * Write optional string.
      *
      * @param field
      *            the field
      * @param value
      *            the value
      *
      * @throws IOException
      *             Signals that an I/O exception has occurred.
      */
     private void writeOptionalString(final String field, final String value) throws IOException {
         if (value != null && !value.isBlank()) {
             this.generator.writeStringField(field, value);
         }
     }
 
     /**
      * Write optional boolean.
      *
      * @param field
      *            the field
      * @param value
      *            the value
      *
      * @throws IOException
      *             Signals that an I/O exception has occurred.
      */
     private void writeOptionalBoolean(final String field, final boolean value) throws IOException {
         if (value) {
             this.generator.writeBooleanField(field, value);
         }
     }
 
     /**
      * Write optional object.
      *
      * @param field
      *            the field
      * @param value
      *            the value
      *
      * @throws IOException
      *             Signals that an I/O exception has occurred.
      */
     private void writeOptionalObject(final String field, final Object value) throws IOException {
         if (value != null) {
             this.generator.writeObjectField(field, value);
         }
     }
 
     /**
      * Write optional timestamp.
      *
      * @param field
      *            the field
      * @param value
      *            the value
      *
      * @throws IOException
      *             Signals that an I/O exception has occurred.
      */
     private void writeOptionalTimestamp(final String field, final Long value) throws IOException {
         if (value != null) {
             final var formatter = DateTimeFormatter.ofPattern(JsonWriter.TIMESTAMP_FORMAT)
                     .withZone(ZoneId.systemDefault());
             this.writeOptionalString(field, formatter.format(Instant.ofEpochMilli(value)));
         }
     }
 
     /**
      * Write optional environment.
      *
      * @param field
      *            the field
      * @param properties
      *            the properties
      *
      * @throws IOException
      *             Signals that an I/O exception has occurred.
      */
     private void writeOptionalEnvironment(final String field, final Properties properties) throws IOException {
         if (properties != null) {
             this.generator.writeObjectFieldStart(field);
             for (final Entry<Object, Object> property : properties.entrySet()) {
                 this.writeOptionalString(property.getKey().toString(), property.getValue().toString());
             }
             this.generator.writeEndObject();
         }
     }
 }