/**
 * Value Object: LiveryDecal
 * Represents a decal/logo placed on a livery
 */

export type DecalType = 'sponsor' | 'user';

export interface LiveryDecalProps {
  id: string;
  imageUrl: string;
  x: number;
  y: number;
  width: number;
  height: number;
  zIndex: number;
  type: DecalType;
}

export class LiveryDecal {
  readonly id: string;
  readonly imageUrl: string;
  readonly x: number;
  readonly y: number;
  readonly width: number;
  readonly height: number;
  readonly zIndex: number;
  readonly type: DecalType;

  private constructor(props: LiveryDecalProps) {
    this.id = props.id;
    this.imageUrl = props.imageUrl;
    this.x = props.x;
    this.y = props.y;
    this.width = props.width;
    this.height = props.height;
    this.zIndex = props.zIndex;
    this.type = props.type;
  }

  static create(props: LiveryDecalProps): LiveryDecal {
    this.validate(props);
    return new LiveryDecal(props);
  }

  private static validate(props: LiveryDecalProps): void {
    if (!props.id || props.id.trim().length === 0) {
      throw new Error('LiveryDecal ID is required');
    }

    if (!props.imageUrl || props.imageUrl.trim().length === 0) {
      throw new Error('LiveryDecal imageUrl is required');
    }

    if (props.x < 0 || props.x > 1) {
      throw new Error('LiveryDecal x coordinate must be between 0 and 1 (normalized)');
    }

    if (props.y < 0 || props.y > 1) {
      throw new Error('LiveryDecal y coordinate must be between 0 and 1 (normalized)');
    }

    if (props.width <= 0 || props.width > 1) {
      throw new Error('LiveryDecal width must be between 0 and 1 (normalized)');
    }

    if (props.height <= 0 || props.height > 1) {
      throw new Error('LiveryDecal height must be between 0 and 1 (normalized)');
    }

    if (!Number.isInteger(props.zIndex) || props.zIndex < 0) {
      throw new Error('LiveryDecal zIndex must be a non-negative integer');
    }

    if (!props.type) {
      throw new Error('LiveryDecal type is required');
    }
  }

  /**
   * Move decal to new position
   */
  moveTo(x: number, y: number): LiveryDecal {
    return LiveryDecal.create({
      ...this,
      x,
      y,
    });
  }

  /**
   * Resize decal
   */
  resize(width: number, height: number): LiveryDecal {
    return LiveryDecal.create({
      ...this,
      width,
      height,
    });
  }

  /**
   * Change z-index
   */
  setZIndex(zIndex: number): LiveryDecal {
    return LiveryDecal.create({
      ...this,
      zIndex,
    });
  }

  /**
   * Check if this decal overlaps with another
   */
  overlapsWith(other: LiveryDecal): boolean {
    const thisRight = this.x + this.width;
    const thisBottom = this.y + this.height;
    const otherRight = other.x + other.width;
    const otherBottom = other.y + other.height;

    return !(
      thisRight <= other.x ||
      this.x >= otherRight ||
      thisBottom <= other.y ||
      this.y >= otherBottom
    );
  }
}