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package com.rapleaf.jack.queries;

import java.util.Arrays;
import java.util.Set;

import com.google.common.base.Preconditions;
import com.google.common.base.Strings;
import com.google.common.collect.Sets;

import com.rapleaf.jack.AttributesWithId;
import com.rapleaf.jack.ModelWithId;

public class AbstractTable implements Table {
  protected final String name;
  protected final String alias;
  protected final Class attributesType;
  protected final Class modelType;
  protected final Set allColumns;

  protected AbstractTable(String name, String alias, Class attributesType, Class modelType) {
    Preconditions.checkArgument(!Strings.isNullOrEmpty(name), "Table name cannot be null or empty.");
    Preconditions.checkArgument(!Strings.isNullOrEmpty(alias), "Table alias cannot be null or empty.");
    this.name = name;
    this.alias = alias;
    this.attributesType = attributesType;
    this.modelType = modelType;
    this.allColumns = Sets.newHashSet();
  }

  protected AbstractTable(AbstractTable table) {
    this.name = table.name;
    this.alias = table.alias;
    this.attributesType = table.attributesType;
    this.modelType = table.modelType;
    this.allColumns = table.allColumns;
  }

  /**
   * This method is used internally only. Users should call {@code Tbl#as}
   * on each respective table to get an aliased reference.
   */
  AbstractTable alias(String alias) {
    return new AbstractTable<>(name, alias, attributesType, modelType);
  }

  @Override
  public String getName() {
    return name;
  }

  @Override
  public String getAlias() {
    return alias;
  }

  @Override
  public Set getAllColumns() {
    return allColumns;
  }

  @Override
  public String getSqlKeyword() {
    return name + " AS " + alias;
  }

  public Class getAttributesType() {
    return attributesType;
  }

  public Class getModelType() {
    return modelType;
  }

  public IndexedTable with(final IndexHint indexHint, final IndexHint... indexHints) {
    Set indexHintList = Sets.newHashSet(indexHint);
    indexHintList.addAll(Arrays.asList(indexHints));
    return new IndexedTable<>(this, IndexHint.validate(indexHintList));
  }

}