import { OperatorFunction } from '../../interfaces.js';
import { ConcatIterable } from '../concat.js';

/**
 * Concatenates the second iterable sequence to the first iterable sequence upon successful termination of the first.
 *
 * @template T The type of the elements in the first source sequence.
 * @template T2 The type of the elements in the second source sequence.
 * @param {Iterable<T>} v1 First iterable source.
 * @param {Iterable<T2>} v2 Second iterable source.
 * @returns {(OperatorFunction<T, T | T2>)} An iterable sequence that contains the elements of the first sequence,
 * followed by those of the second the sequence.
 */
export function concatWith<T, T2>(v2: Iterable<T2>): OperatorFunction<T, T | T2>;
/**
 * Concatenates all iterable sequences in the given sequences, as long as the previous iterable
 * sequence terminated successfully.
 *
 * @template T The type of the elements in the first source sequence.
 * @template T2 The type of the elements in the second source sequence.
 * @template T3 The type of the elements in the third source sequence.
 * @param {Iterable<T>} v1 First iterable source.
 * @param {Iterable<T2>} v2 Second iterable source.
 * @param {Iterable<T3>} v3 Third iterable source.
 * @returns {(OperatorFunction<T, T | T2 | T3>)} An iterable sequence that contains the elements of each given sequence,
 * in sequential order.
 */
export function concatWith<T, T2, T3>(
  v2: Iterable<T2>,
  v3: Iterable<T3>
): OperatorFunction<T, T | T2 | T3>;
/**
 * Concatenates all iterable sequences in the given sequences, as long as the previous iterable
 * sequence terminated successfully.
 *
 * @template T The type of the elements in the first source sequence.
 * @template T2 The type of the elements in the second source sequence.
 * @template T3 The type of the elements in the third source sequence.
 * @template T4 The type of the elements in the fourth source sequence.
 * @param {Iterable<T2>} v2 Second iterable source.
 * @param {Iterable<T3>} v3 Third iterable source.
 * @param {Iterable<T4>} v4 Fourth iterable source.
 * @returns {(OperatorFunction<T, T | T2 | T3 | T4>)} An iterable sequence that contains the elements of each
 * given sequence, in sequential order.
 */
export function concatWith<T, T2, T3, T4>(
  v2: Iterable<T2>,
  v3: Iterable<T3>,
  v4: Iterable<T4>
): OperatorFunction<T, T | T2 | T3 | T4>;
/**
 * Concatenates all iterable sequences in the given sequences, as long as the previous iterable
 * sequence terminated successfully.
 *
 * @template T The type of the elements in the first source sequence.
 * @template T2 The type of the elements in the second source sequence.
 * @template T3 The type of the elements in the third source sequence.
 * @template T4 The type of the elements in the fourth source sequence.
 * @template T5 The type of the elements in the fifth source sequence.
 * @param {Iterable<T2>} v2 Second iterable source.
 * @param {Iterable<T3>} v3 Third iterable source.
 * @param {Iterable<T4>} v4 Fourth iterable source.
 * @param {Iterable<T5>} v5 Fifth iterable source.
 * @returns {(OperatorFunction<T, T | T2 | T3 | T4 | T5>)} An iterable sequence that contains the elements of each
 * given sequence, in sequential order.
 */
export function concatWith<T, T2, T3, T4, T5>(
  v2: Iterable<T2>,
  v3: Iterable<T3>,
  v4: Iterable<T4>,
  v5: Iterable<T5>
): OperatorFunction<T, T | T2 | T3 | T4 | T5>;
/**
 * Concatenates all iterable sequences in the given sequences, as long as the previous iterable
 * sequence terminated successfully.
 *
 * @template T The type of the elements in the first source sequence.
 * @template T2 The type of the elements in the second source sequence.
 * @template T3 The type of the elements in the third source sequence.
 * @template T4 The type of the elements in the fourth source sequence.
 * @template T5 The type of the elements in the fifth source sequence.
 * @template T6 The type of the elements in the sixth source sequence.
 * @param {Iterable<T2>} v2 Second iterable source.
 * @param {Iterable<T3>} v3 Third iterable source.
 * @param {Iterable<T4>} v4 Fourth iterable source.
 * @param {Iterable<T5>} v5 Fifth iterable source.
 * @param {Iterable<T6>} v6 Sixth iterable source.
 * @returns {(OperatorFunction<T, T | T2 | T3 | T4 | T5 | T6>)} An iterable sequence that contains the elements of each
 * given sequence, in sequential order.
 */
export function concatWith<T, T2, T3, T4, T5, T6>(
  v2: Iterable<T2>,
  v3: Iterable<T3>,
  v4: Iterable<T4>,
  v5: Iterable<T5>,
  v6: Iterable<T6>
): OperatorFunction<T, T | T2 | T3 | T4 | T5 | T6>;

/**
 * Concatenates all iterable sequences in the given sequences, as long as the previous iterable
 * sequence terminated successfully.
 *
 * @template T The type of the elements in the sequences.
 * @param {...Iterable<T>[]} args The iterable sources.
 * @returns {AsyncIterableX<T>} An iterable sequence that contains the elements of each given sequence, in sequential order.
 */
export function concatWith<T>(...args: Iterable<T>[]): OperatorFunction<T, T> {
  return function concatWithOperatorFunction(source: Iterable<T>) {
    return new ConcatIterable<T>([source, ...args]);
  };
}