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package io.thestencil.client.spi;

/*-
 * #%L
 * stencil-client-api
 * %%
 * Copyright (C) 2021 - 2022 Copyright 2021 ReSys OÜ
 * %%
 * 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.
 * #L%
 */

import java.io.IOException;
import java.util.List;

import com.fasterxml.jackson.databind.ObjectMapper;

import io.resys.thena.docdb.api.DocDB;
import io.resys.thena.docdb.api.actions.CommitActions;
import io.resys.thena.docdb.api.actions.DiffActions;
import io.resys.thena.docdb.api.actions.HistoryActions;
import io.resys.thena.docdb.api.actions.ObjectsActions;
import io.resys.thena.docdb.api.actions.RepoActions;
import io.resys.thena.docdb.api.actions.TagActions;
import io.smallrye.mutiny.Uni;
import io.thestencil.client.api.ImmutableStencilConfig;
import io.thestencil.client.api.StencilClient.Entity;
import io.thestencil.client.api.StencilClient.EntityBody;
import io.thestencil.client.api.StencilClient.EntityType;
import io.thestencil.client.api.StencilConfig;
import io.thestencil.client.api.StencilConfig.EntityState;
import io.thestencil.client.api.StencilStore;

public class StencilStoreInMemory implements StencilStore {
  private final StencilConfig config;
  
  public StencilStoreInMemory(ImmutableStencilConfig.Builder init) {
    super();
    init
      .authorProvider(() -> "not supported!")
      .serializer((entity) -> {
        try { 
          return getObjectMapper().writeValueAsString(entity);
        } catch (IOException e) {
          throw new RuntimeException(e.getMessage(), e);
        }
      })
      .deserializer(new DeserializerInMemory())
      .gidProvider(type -> {
        throw new IllegalArgumentException("no read or writes supported!");
      })
      .repoName("in-memory")
      .headName("in-memory")
      .client(new DocDBInMemeory());
    this.config = init.build();
  }
  
  private ObjectMapper getObjectMapper() {
    return config.getObjectMapper();
  }
  
  private static class DeserializerInMemory implements StencilConfig.Deserializer {

    @Override
    public Entity fromString(String value) {
      throw new IllegalArgumentException("no read or writes supported!");
    }

    @Override
    public  Entity fromString(EntityType type, String value) {
      throw new IllegalArgumentException("no read or writes supported!");
    }
    
  }
  
  private static class DocDBInMemeory implements DocDB {
    @Override
    public RepoActions repo() {
      throw new IllegalArgumentException("no read or writes supported!");
    }
    @Override
    public CommitActions commit() {
      throw new IllegalArgumentException("no read or writes supported!");
    }
    @Override
    public TagActions tag() {
      throw new IllegalArgumentException("no read or writes supported!");
    }
    @Override
    public DiffActions diff() {
      throw new IllegalArgumentException("no read or writes supported!");
    }
    @Override
    public HistoryActions history() {
      throw new IllegalArgumentException("no read or writes supported!");
    }
    @Override
    public ObjectsActions objects() {
      throw new IllegalArgumentException("no read or writes supported!");
    }
    
  }

  @Override
  public StencilConfig getConfig() {
    return this.config;
  }
  
  @Override
  public  Uni> delete(Entity toBeDeleted) {
    throw new IllegalArgumentException("no read or writes supported!");
  }

  @Override
  public  Uni> get(String blobId, EntityType type) {
    throw new IllegalArgumentException("no read or writes supported!");
  }

  @Override
  public  Uni> save(Entity toBeSaved) {
    throw new IllegalArgumentException("no read or writes supported!");
  }

  @Override
  public  Uni> create(Entity toBeSaved) {
    throw new IllegalArgumentException("no read or writes supported!");
  }

  @Override
  public Uni>> saveAll(List> toBeSaved) {
    throw new IllegalArgumentException("no read or writes supported!");
  }

  @Override
  public Uni>> batch(BatchCommand batch) {
    throw new IllegalArgumentException("no read or writes supported!");
  }

  @Override
  public QueryBuilder query() {
    throw new IllegalArgumentException("no read or writes supported!");
  }

  @Override
  public StoreRepoBuilder repo() {
    throw new IllegalArgumentException("no read or writes supported!");
  }

  @Override
  public String getRepoName() {
    throw new IllegalArgumentException("no read or writes supported!");
  }

  @Override
  public String getHeadName() {
    throw new IllegalArgumentException("no read or writes supported!");
  }

  @Override
  public String gid(EntityType type) {
    throw new IllegalArgumentException("no read or writes supported!");
  }

}