“use strict”;

Object.defineProperty(exports, “__esModule”, {

value: true

}); exports.default = literalTemplate;

var _options = require(“./options”);

var _parse = _interopRequireDefault(require(“./parse”));

var _populate = _interopRequireDefault(require(“./populate”));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function literalTemplate(formatter, tpl, opts) {

const {
  metadata,
  names
} = buildLiteralData(formatter, tpl, opts);
return arg => {
  const defaultReplacements = arg.reduce((acc, replacement, i) => {
    acc[names[i]] = replacement;
    return acc;
  }, {});
  return arg => {
    const replacements = (0, _options.normalizeReplacements)(arg);

    if (replacements) {
      Object.keys(replacements).forEach(key => {
        if (Object.prototype.hasOwnProperty.call(defaultReplacements, key)) {
          throw new Error("Unexpected replacement overlap.");
        }
      });
    }

    return formatter.unwrap((0, _populate.default)(metadata, replacements ? Object.assign(replacements, defaultReplacements) : defaultReplacements));
  };
};

}

function buildLiteralData(formatter, tpl, opts) {

let names;
let nameSet;
let metadata;
let prefix = "";

do {
  prefix += "$";
  const result = buildTemplateCode(tpl, prefix);
  names = result.names;
  nameSet = new Set(names);
  metadata = (0, _parse.default)(formatter, formatter.code(result.code), {
    parser: opts.parser,
    placeholderWhitelist: new Set(result.names.concat(opts.placeholderWhitelist ? Array.from(opts.placeholderWhitelist) : [])),
    placeholderPattern: opts.placeholderPattern,
    preserveComments: opts.preserveComments,
    syntacticPlaceholders: opts.syntacticPlaceholders
  });
} while (metadata.placeholders.some(placeholder => placeholder.isDuplicate && nameSet.has(placeholder.name)));

return {
  metadata,
  names
};

}

function buildTemplateCode(tpl, prefix) {

const names = [];
let code = tpl[0];

for (let i = 1; i < tpl.length; i++) {
  const value = `${prefix}${i - 1}`;
  names.push(value);
  code += value + tpl[i];
}

return {
  names,
  code
};

}