import { Alias } from '../nodes/Alias.mjs';
import { isScalar } from '../nodes/identity.mjs';
import { composeCollection } from './compose-collection.mjs';
import { composeScalar } from './compose-scalar.mjs';
import { resolveEnd } from './resolve-end.mjs';
import { emptyScalarPosition } from './util-empty-scalar-position.mjs';

const CN = {
  composeNode,
  composeEmptyNode
};
function composeNode(ctx, token, props, onError) {
  const atKey = ctx.atKey;
  const {
    spaceBefore,
    comment,
    anchor,
    tag
  } = props;
  let node;
  let isSrcToken = true;
  switch (token.type) {
    case 'alias':
      node = composeAlias(ctx, token, onError);
      if (anchor || tag) onError(token, 'ALIAS_PROPS', 'An alias node must not specify any properties');
      break;
    case 'scalar':
    case 'single-quoted-scalar':
    case 'double-quoted-scalar':
    case 'block-scalar':
      node = composeScalar(ctx, token, tag, onError);
      if (anchor) node.anchor = anchor.source.substring(1);
      break;
    case 'block-map':
    case 'block-seq':
    case 'flow-collection':
      node = composeCollection(CN, ctx, token, props, onError);
      if (anchor) node.anchor = anchor.source.substring(1);
      break;
    default:
      {
        const message = token.type === 'error' ? token.message : `Unsupported token (type: ${token.type})`;
        onError(token, 'UNEXPECTED_TOKEN', message);
        node = composeEmptyNode(ctx, token.offset, undefined, null, props, onError);
        isSrcToken = false;
      }
  }
  if (anchor && node.anchor === '') onError(anchor, 'BAD_ALIAS', 'Anchor cannot be an empty string');
  if (atKey && ctx.options.stringKeys && (!isScalar(node) || typeof node.value !== 'string' || node.tag && node.tag !== 'tag:yaml.org,2002:str')) {
    const msg = 'With stringKeys, all keys must be strings';
    onError(tag ?? token, 'NON_STRING_KEY', msg);
  }
  if (spaceBefore) node.spaceBefore = true;
  if (comment) {
    if (token.type === 'scalar' && token.source === '') node.comment = comment;else node.commentBefore = comment;
  }
  // @ts-expect-error Type checking misses meaning of isSrcToken
  if (ctx.options.keepSourceTokens && isSrcToken) node.srcToken = token;
  return node;
}
function composeEmptyNode(ctx, offset, before, pos, {
  spaceBefore,
  comment,
  anchor,
  tag,
  end
}, onError) {
  const token = {
    type: 'scalar',
    offset: emptyScalarPosition(offset, before, pos),
    indent: -1,
    source: ''
  };
  const node = composeScalar(ctx, token, tag, onError);
  if (anchor) {
    node.anchor = anchor.source.substring(1);
    if (node.anchor === '') onError(anchor, 'BAD_ALIAS', 'Anchor cannot be an empty string');
  }
  if (spaceBefore) node.spaceBefore = true;
  if (comment) {
    node.comment = comment;
    node.range[2] = end;
  }
  return node;
}
function composeAlias({
  options
}, {
  offset,
  source,
  end
}, onError) {
  const alias = new Alias(source.substring(1));
  if (alias.source === '') onError(offset, 'BAD_ALIAS', 'Alias cannot be an empty string');
  if (alias.source.endsWith(':')) onError(offset + source.length - 1, 'BAD_ALIAS', 'Alias ending in : is ambiguous', true);
  const valueEnd = offset + source.length;
  const re = resolveEnd(end, valueEnd, options.strict, onError);
  alias.range = [offset, valueEnd, re.offset];
  if (re.comment) alias.comment = re.comment;
  return alias;
}

export { composeEmptyNode, composeNode };
