import { NonterminalKind, TerminalKind } from '@nomicfoundation/slang/cst';
import { printSeparatedList } from '../slang-printers/print-separated-list.js';
import { isBinaryOperation } from '../slang-utils/is-binary-operation.js';
import { getNodeMetadata, updateMetadata } from '../slang-utils/metadata.js';
import { TupleValue } from './TupleValue.js';

import type * as ast from '@nomicfoundation/slang/ast';
import type { AstPath, Doc, ParserOptions } from 'prettier';
import type { AstNode } from './types.d.ts';
import type { PrintFunction, SlangNode } from '../types.d.ts';

export class TupleValues implements SlangNode {
  readonly kind = NonterminalKind.TupleValues;

  comments;

  loc;

  items: TupleValue[];

  separators: string[];

  constructor(ast: ast.TupleValues, options: ParserOptions<AstNode>) {
    let metadata = getNodeMetadata(ast, true);

    this.items = ast.items.map((item) => new TupleValue(item, options));
    this.separators = ast.separators.map((separator) => separator.unparse());

    metadata = updateMetadata(metadata, [this.items]);

    this.comments = metadata.comments;
    this.loc = metadata.loc;
  }

  print(path: AstPath<TupleValues>, print: PrintFunction): Doc {
    return this.items.length === 1 &&
      this.items[0].expression &&
      this.items[0].expression.variant.kind !== TerminalKind.Identifier &&
      isBinaryOperation(this.items[0].expression.variant)
      ? path.map(print, 'items')
      : printSeparatedList(path.map(print, 'items'));
  }
}