package com.mapbox.mapboxsdk.annotations;

import android.graphics.Bitmap;
import android.os.Parcel;
import android.os.Parcelable;

import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import com.mapbox.mapboxsdk.exceptions.InvalidMarkerPositionException;
import com.mapbox.mapboxsdk.geometry.LatLng;

/**
 * <p>
 * Builder for composing {@link Marker} objects. See {@link Marker} for additional information.
 * </p>
 * <h3>Example</h3>
 * <pre>
 * mapView.addMarker(new MarkerOptions()
 *   .title("Intersection")
 *   .snippet("H St NW with 15th St NW")
 *   .position(new LatLng(38.9002073, -77.03364419)));
 * </pre>
 */
public final class MarkerOptions extends BaseMarkerOptions<Marker, MarkerOptions> implements Parcelable {

  /**
   * Defines options for a Marker.
   */
  public MarkerOptions() {
  }

  protected MarkerOptions(Parcel in) {
    position((LatLng) in.readParcelable(LatLng.class.getClassLoader()));
    snippet(in.readString());
    title(in.readString());
    if (in.readByte() != 0) {
      // this means we have an icon
      String iconId = in.readString();
      Bitmap iconBitmap = in.readParcelable(Bitmap.class.getClassLoader());
      Icon icon = new Icon(iconId, iconBitmap);
      icon(icon);
    }
  }

  @NonNull
  @Override
  public MarkerOptions getThis() {
    return this;
  }

  /**
   * Describe the kinds of special objects contained in this Parcelable's
   * marshalled representation.
   *
   * @return integer 0.
   */
  @Override
  public int describeContents() {
    return 0;
  }

  /**
   * Flatten this object in to a Parcel.
   *
   * @param out   The Parcel in which the object should be written.
   * @param flags Additional flags about how the object should be written. May be 0 or
   *              {@link #PARCELABLE_WRITE_RETURN_VALUE}.
   */
  @Override
  public void writeToParcel(Parcel out, int flags) {
    out.writeParcelable(getPosition(), flags);
    out.writeString(getSnippet());
    out.writeString(getTitle());
    Icon icon = getIcon();
    out.writeByte((byte) (icon != null ? 1 : 0));
    if (icon != null) {
      out.writeString(getIcon().getId());
      out.writeParcelable(getIcon().getBitmap(), flags);
    }
  }

  /**
   * Do not use this method. Used internally by the SDK.
   *
   * @return Marker The build marker
   */
  public Marker getMarker() {
    if (position == null) {
      throw new InvalidMarkerPositionException();
    }

    return new Marker(position, icon, title, snippet);
  }

  /**
   * Returns the position set for this {@link MarkerOptions} object.
   *
   * @return A {@link LatLng} object specifying the marker's current position.
   */
  public LatLng getPosition() {
    return position;
  }

  /**
   * Gets the snippet set for this {@link MarkerOptions} object.
   *
   * @return A string containing the marker's snippet.
   */
  public String getSnippet() {
    return snippet;
  }

  /**
   * Gets the title set for this {@link MarkerOptions} object.
   *
   * @return A string containing the marker's title.
   */
  public String getTitle() {
    return title;
  }

  /**
   * Gets the custom icon set for this {@link MarkerOptions} object.
   *
   * @return A {@link Icon} object that the marker is using. If the icon wasn't set, default icon
   * will return.
   */
  public Icon getIcon() {
    return icon;
  }

  public static final Parcelable.Creator<MarkerOptions> CREATOR =
    new Parcelable.Creator<MarkerOptions>() {
      public MarkerOptions createFromParcel(@NonNull Parcel in) {
        return new MarkerOptions(in);
      }

      public MarkerOptions[] newArray(int size) {
        return new MarkerOptions[size];
      }
    };

  /**
   * Compares this {@link MarkerOptions} object with another {@link MarkerOptions} and
   * determines if their properties match.
   *
   * @param o Another {@link MarkerOptions} to compare with this object.
   * @return True if marker properties match this {@link MarkerOptions} object.
   * Else, false.
   */
  @Override
  public boolean equals(@Nullable Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }

    MarkerOptions marker = (MarkerOptions) o;

    if (getPosition() != null ? !getPosition().equals(marker.getPosition()) : marker.getPosition() != null) {
      return false;
    }
    if (getSnippet() != null ? !getSnippet().equals(marker.getSnippet()) : marker.getSnippet() != null) {
      return false;
    }
    if (getIcon() != null ? !getIcon().equals(marker.getIcon()) : marker.getIcon() != null) {
      return false;
    }
    return !(getTitle() != null ? !getTitle().equals(marker.getTitle()) : marker.getTitle() != null);
  }

  /**
   * Gives an integer which can be used as the bucket number for storing elements of the set/map.
   * This bucket number is the address of the element inside the set/map. There's no guarantee
   * that this hash value will be consistent between different Java implementations, or even
   * between different execution runs of the same program.
   *
   * @return integer value you can use for storing element.
   */
  @Override
  public int hashCode() {
    int result = 1;
    result = 31 * result + (getPosition() != null ? getPosition().hashCode() : 0);
    result = 31 * result + (getSnippet() != null ? getSnippet().hashCode() : 0);
    result = 31 * result + (getIcon() != null ? getIcon().hashCode() : 0);
    result = 31 * result + (getTitle() != null ? getTitle().hashCode() : 0);
    return result;
  }
}