"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = exports.comment = void 0;
exports.markAsParsed = markAsParsed;
var _plugin = _interopRequireDefault(require("../plugin"));
var _yaml = require("./directives/yaml");
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
/** @module */

const commentMatcher = /<!--+\s*([\s\S]*?)\s*--+>/;
const commentMatcherOpening = /^<!--/;
const commentMatcherClosing = /-->/;
const magicCommentMatchers = [
// Prettier
/^prettier-ignore(-(start|end))?$/,
// markdownlint
/^markdownlint-((disable|enable).*|capture|restore)$/,
// remark-lint (remark-message-control)
/^lint (disable|enable|ignore).*$/];
function markAsParsed(token, kind) {
  token.meta = token.meta || {};
  token.meta.marpitCommentParsed = kind;
}

/**
 * Marpit comment plugin.
 *
 * Parse HTML comment as token. Comments will strip regardless of html setting
 * provided by markdown-it.
 *
 * @function comment
 * @param {MarkdownIt} md markdown-it instance.
 */
function _comment(md) {
  const parse = (token, content) => {
    const parsed = (0, _yaml.yaml)(content, !!md.marpit.options.looseYAML);
    token.meta = token.meta || {};
    token.meta.marpitParsedDirectives = parsed === false ? {} : parsed;

    // Mark well-known magic comments as parsed comment
    for (const magicCommentMatcher of magicCommentMatchers) {
      if (magicCommentMatcher.test(content.trim())) {
        markAsParsed(token, 'well-known-magic-comment');
        break;
      }
    }
  };
  md.block.ruler.before('html_block', 'marpit_comment', (state, startLine, endLine, silent) => {
    // Fast fail
    let pos = state.bMarks[startLine] + state.tShift[startLine];
    if (state.src.charCodeAt(pos) !== 0x3c) return false;
    let max = state.eMarks[startLine];
    let line = state.src.slice(pos, max);

    // Match to opening element
    if (!commentMatcherOpening.test(line)) return false;
    if (silent) return true;

    // Parse ending element
    let nextLine = startLine + 1;
    if (!commentMatcherClosing.test(line)) {
      while (nextLine < endLine) {
        if (state.sCount[nextLine] < state.blkIndent) break;
        pos = state.bMarks[nextLine] + state.tShift[nextLine];
        max = state.eMarks[nextLine];
        line = state.src.slice(pos, max);
        nextLine += 1;
        if (commentMatcherClosing.test(line)) break;
      }
    }
    state.line = nextLine;

    // Create token
    const token = state.push('marpit_comment', '', 0);
    token.map = [startLine, nextLine];
    token.markup = state.getLines(startLine, nextLine, state.blkIndent, true);
    token.hidden = true;
    const matchedContent = commentMatcher.exec(token.markup);
    token.content = matchedContent ? matchedContent[1].trim() : '';
    parse(token, token.content);
    return true;
  });
  md.inline.ruler.before('html_inline', 'marpit_inline_comment', (state, silent) => {
    const {
      posMax,
      src
    } = state;

    // Quick fail by checking `<` and `!`
    if (state.pos + 2 >= posMax || src.charCodeAt(state.pos) !== 0x3c || src.charCodeAt(state.pos + 1) !== 0x21) return false;
    const match = src.slice(state.pos).match(commentMatcher);
    if (!match) return false;
    if (!silent) {
      const token = state.push('marpit_comment', '', 0);
      token.hidden = true;
      token.markup = src.slice(state.pos, state.pos + match[0].length);
      token.content = match[1].trim();
      parse(token, token.content);
    }
    state.pos += match[0].length;
    return true;
  });
}
const comment = exports.comment = (0, _plugin.default)(_comment);
var _default = exports.default = comment;