// tslint:disable:no-invalid-this
import "jest";
import { Node } from "prosemirror-model";
import { ExpectExtendSync } from "./expect";

const matcherName = "toMatchNode";

const toMatchNode: ExpectExtendSync = function(received, expected) {
  if (!(expected instanceof Node)) {
    return {
      message: () =>
        `${this.utils.matcherHint(`.${matcherName}`)}\n\n` +
        `Expected value should be an Node (using instanceof):\n` +
        `  ${this.utils.printExpected(expected)}`,
      pass: false
    };
  }

  if (!(received instanceof Node)) {
    return {
      message: () =>
        `${this.utils.matcherHint(`.${matcherName}`)}\n\n` +
        `Received value should be an Node (using instanceof):\n` +
        `  ${this.utils.printReceived(received)}`,
      pass: false
    };
  }

  const pass = expected.eq(received);
  return {
    message: () =>
      pass
        ? `${this.utils.matcherHint(`.not.${matcherName}`)}\n\n` +
          `Expected to not be (using .eq):\n` +
          `  ${this.utils.printExpected(expected)}\n` +
          `Received:\n` +
          `  ${this.utils.printReceived(received)}`
        : `${this.utils.matcherHint(`.${matcherName}`)}\n\n` +
          `Expected to be (using .eq):\n` +
          `  ${this.utils.printExpected(expected)}\n` +
          `Received:\n` +
          `  ${this.utils.printReceived(received)}`,
    pass
  };
};

declare global {
  namespace jest {
    interface Matchers<R> {
      toMatchNode(expected: Node): R;
    }
  }
}

expect.extend({
  toMatchNode
});