"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.normalizeOptions = normalizeOptions;
exports.shouldUseModulesPlugins = shouldUseModulesPlugins;
exports.shouldUseImportPlugin = shouldUseImportPlugin;
exports.shouldUseURLPlugin = shouldUseURLPlugin;
exports.shouldUseIcssPlugin = shouldUseIcssPlugin;
exports.normalizeUrl = normalizeUrl;
exports.requestify = requestify;
exports.getFilter = getFilter;
exports.getModulesOptions = getModulesOptions;
exports.getModulesPlugins = getModulesPlugins;
exports.normalizeSourceMap = normalizeSourceMap;
exports.getPreRequester = getPreRequester;
exports.getImportCode = getImportCode;
exports.getModuleCode = getModuleCode;
exports.getExportCode = getExportCode;
exports.resolveRequests = resolveRequests;
exports.isUrlRequestable = isUrlRequestable;
exports.sort = sort;

var _url = require("url");

var _path = _interopRequireDefault(require("path"));

var _loaderUtils = require("loader-utils");

var _cssesc = _interopRequireDefault(require("cssesc"));

var _postcssModulesValues = _interopRequireDefault(require("postcss-modules-values"));

var _postcssModulesLocalByDefault = _interopRequireDefault(require("postcss-modules-local-by-default"));

var _postcssModulesExtractImports = _interopRequireDefault(require("postcss-modules-extract-imports"));

var _postcssModulesScope = _interopRequireDefault(require("postcss-modules-scope"));

var _camelcase = _interopRequireDefault(require("camelcase"));

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

/*
  MIT License http://www.opensource.org/licenses/mit-license.php
  Author Tobias Koppers @sokra
*/
const whitespace = '[\\x20\\t\\r\\n\\f]';
const unescapeRegExp = new RegExp(`\\\\([\\da-f]{1,6}${whitespace}?|(${whitespace})|.)`, 'ig');
const matchNativeWin32Path = /^[A-Z]:[/\\]|^\\\\/i;

function unescape(str) {
  return str.replace(unescapeRegExp, (_, escaped, escapedWhitespace) => {
    const high = `0x${escaped}` - 0x10000;
    /* eslint-disable line-comment-position */
    // NaN means non-codepoint
    // Workaround erroneous numeric interpretation of +"0x"
    // eslint-disable-next-line no-self-compare

    return high !== high || escapedWhitespace ? escaped : high < 0 ? // BMP codepoint
    String.fromCharCode(high + 0x10000) : // Supplemental Plane codepoint (surrogate pair)
    // eslint-disable-next-line no-bitwise
    String.fromCharCode(high >> 10 | 0xd800, high & 0x3ff | 0xdc00);
    /* eslint-enable line-comment-position */
  });
}

function normalizePath(file) {
  return _path.default.sep === '\\' ? file.replace(/\\/g, '/') : file;
} // eslint-disable-next-line no-control-regex


const filenameReservedRegex = /[<>:"/\\|?*]/g; // eslint-disable-next-line no-control-regex

const reControlChars = /[\u0000-\u001f\u0080-\u009f]/g;

function defaultGetLocalIdent(loaderContext, localIdentName, localName, options) {
  const {
    context,
    hashPrefix
  } = options;
  const {
    resourcePath
  } = loaderContext;
  const request = normalizePath(_path.default.relative(context, resourcePath)); // eslint-disable-next-line no-param-reassign

  options.content = `${hashPrefix + request}\x00${unescape(localName)}`; // Using `[path]` placeholder outputs `/` we need escape their
  // Also directories can contains invalid characters for css we need escape their too

  return (0, _cssesc.default)((0, _loaderUtils.interpolateName)(loaderContext, localIdentName, options) // For `[hash]` placeholder
  .replace(/^((-?[0-9])|--)/, '_$1').replace(filenameReservedRegex, '-').replace(reControlChars, '-').replace(/\./g, '-'), {
    isIdentifier: true
  }).replace(/\\\[local\\]/gi, localName);
}

function normalizeUrl(url, isStringValue) {
  let normalizedUrl = url;

  if (isStringValue && /\\(\n|\r\n|\r|\f)/.test(normalizedUrl)) {
    normalizedUrl = normalizedUrl.replace(/\\(\n|\r\n|\r|\f)/g, '');
  }

  if (matchNativeWin32Path.test(url)) {
    return decodeURIComponent(normalizedUrl);
  }

  return decodeURIComponent(unescape(normalizedUrl));
}

function requestify(url, rootContext) {
  if (/^file:/i.test(url)) {
    return (0, _url.fileURLToPath)(url);
  }

  return url.charAt(0) === '/' ? (0, _loaderUtils.urlToRequest)(url, rootContext) : (0, _loaderUtils.urlToRequest)(url);
}

function getFilter(filter, resourcePath) {
  return (...args) => {
    if (typeof filter === 'function') {
      return filter(...args, resourcePath);
    }

    return true;
  };
}

const moduleRegExp = /\.module\.\w+$/i;

function getModulesOptions(rawOptions, loaderContext) {
  const {
    resourcePath
  } = loaderContext;

  if (typeof rawOptions.modules === 'undefined') {
    const isModules = moduleRegExp.test(resourcePath);

    if (!isModules) {
      return false;
    }
  } else if (typeof rawOptions.modules === 'boolean' && rawOptions.modules === false) {
    return false;
  }

  let modulesOptions = {
    compileType: rawOptions.icss ? 'icss' : 'module',
    auto: true,
    mode: 'local',
    exportGlobals: false,
    localIdentName: '[hash:base64]',
    localIdentContext: loaderContext.rootContext,
    localIdentHashPrefix: '',
    // eslint-disable-next-line no-undefined
    localIdentRegExp: undefined,
    getLocalIdent: defaultGetLocalIdent,
    namedExport: false,
    exportLocalsConvention: 'asIs',
    exportOnlyLocals: false
  };

  if (typeof rawOptions.modules === 'boolean' || typeof rawOptions.modules === 'string') {
    modulesOptions.mode = typeof rawOptions.modules === 'string' ? rawOptions.modules : 'local';
  } else {
    if (rawOptions.modules) {
      if (typeof rawOptions.modules.auto === 'boolean') {
        const isModules = rawOptions.modules.auto && moduleRegExp.test(resourcePath);

        if (!isModules) {
          return false;
        }
      } else if (rawOptions.modules.auto instanceof RegExp) {
        const isModules = rawOptions.modules.auto.test(resourcePath);

        if (!isModules) {
          return false;
        }
      } else if (typeof rawOptions.modules.auto === 'function') {
        const isModule = rawOptions.modules.auto(resourcePath);

        if (!isModule) {
          return false;
        }
      }

      if (rawOptions.modules.namedExport === true && typeof rawOptions.modules.exportLocalsConvention === 'undefined') {
        modulesOptions.exportLocalsConvention = 'camelCaseOnly';
      }
    }

    modulesOptions = { ...modulesOptions,
      ...(rawOptions.modules || {})
    };
  }

  if (typeof modulesOptions.mode === 'function') {
    modulesOptions.mode = modulesOptions.mode(loaderContext.resourcePath);
  }

  if (modulesOptions.namedExport === true) {
    if (rawOptions.esModule === false) {
      throw new Error('The "modules.namedExport" option requires the "esModules" option to be enabled');
    }

    if (modulesOptions.exportLocalsConvention !== 'camelCaseOnly') {
      throw new Error('The "modules.namedExport" option requires the "modules.exportLocalsConvention" option to be "camelCaseOnly"');
    }
  }

  return modulesOptions;
}

function normalizeOptions(rawOptions, loaderContext) {
  if (rawOptions.icss) {
    loaderContext.emitWarning(new Error('The "icss" option is deprecated, use "modules.compileType: "icss"" instead'));
  }

  const modulesOptions = getModulesOptions(rawOptions, loaderContext);
  return {
    url: typeof rawOptions.url === 'undefined' ? true : rawOptions.url,
    import: typeof rawOptions.import === 'undefined' ? true : rawOptions.import,
    modules: modulesOptions,
    // TODO remove in the next major release
    icss: typeof rawOptions.icss === 'undefined' ? false : rawOptions.icss,
    sourceMap: typeof rawOptions.sourceMap === 'boolean' ? rawOptions.sourceMap : loaderContext.sourceMap,
    importLoaders: typeof rawOptions.importLoaders === 'string' ? parseInt(rawOptions.importLoaders, 10) : rawOptions.importLoaders,
    esModule: typeof rawOptions.esModule === 'undefined' ? true : rawOptions.esModule
  };
}

function shouldUseImportPlugin(options) {
  if (options.modules.exportOnlyLocals) {
    return false;
  }

  if (typeof options.import === 'boolean') {
    return options.import;
  }

  return true;
}

function shouldUseURLPlugin(options) {
  if (options.modules.exportOnlyLocals) {
    return false;
  }

  if (typeof options.url === 'boolean') {
    return options.url;
  }

  return true;
}

function shouldUseModulesPlugins(options) {
  return options.modules.compileType === 'module';
}

function shouldUseIcssPlugin(options) {
  return options.icss === true || Boolean(options.modules);
}

function getModulesPlugins(options, loaderContext) {
  const {
    mode,
    getLocalIdent,
    localIdentName,
    localIdentContext,
    localIdentHashPrefix,
    localIdentRegExp
  } = options.modules;
  let plugins = [];

  try {
    plugins = [_postcssModulesValues.default, (0, _postcssModulesLocalByDefault.default)({
      mode
    }), (0, _postcssModulesExtractImports.default)(), (0, _postcssModulesScope.default)({
      generateScopedName(exportName) {
        return getLocalIdent(loaderContext, localIdentName, exportName, {
          context: localIdentContext,
          hashPrefix: localIdentHashPrefix,
          regExp: localIdentRegExp
        });
      },

      exportGlobals: options.modules.exportGlobals
    })];
  } catch (error) {
    loaderContext.emitError(error);
  }

  return plugins;
}

const IS_NATIVE_WIN32_PATH = /^[a-z]:[/\\]|^\\\\/i;
const ABSOLUTE_SCHEME = /^[a-z0-9+\-.]+:/i;

function getURLType(source) {
  if (source[0] === '/') {
    if (source[1] === '/') {
      return 'scheme-relative';
    }

    return 'path-absolute';
  }

  if (IS_NATIVE_WIN32_PATH.test(source)) {
    return 'path-absolute';
  }

  return ABSOLUTE_SCHEME.test(source) ? 'absolute' : 'path-relative';
}

function normalizeSourceMap(map, resourcePath) {
  let newMap = map; // Some loader emit source map as string
  // Strip any JSON XSSI avoidance prefix from the string (as documented in the source maps specification), and then parse the string as JSON.

  if (typeof newMap === 'string') {
    newMap = JSON.parse(newMap);
  }

  delete newMap.file;
  const {
    sourceRoot
  } = newMap;
  delete newMap.sourceRoot;

  if (newMap.sources) {
    // Source maps should use forward slash because it is URLs (https://github.com/mozilla/source-map/issues/91)
    // We should normalize path because previous loaders like `sass-loader` using backslash when generate source map
    newMap.sources = newMap.sources.map(source => {
      // Non-standard syntax from `postcss`
      if (source.indexOf('<') === 0) {
        return source;
      }

      const sourceType = getURLType(source); // Do no touch `scheme-relative` and `absolute` URLs

      if (sourceType === 'path-relative' || sourceType === 'path-absolute') {
        const absoluteSource = sourceType === 'path-relative' && sourceRoot ? _path.default.resolve(sourceRoot, normalizePath(source)) : normalizePath(source);
        return _path.default.relative(_path.default.dirname(resourcePath), absoluteSource);
      }

      return source;
    });
  }

  return newMap;
}

function getPreRequester({
  loaders,
  loaderIndex
}) {
  const cache = Object.create(null);
  return number => {
    if (cache[number]) {
      return cache[number];
    }

    if (number === false) {
      cache[number] = '';
    } else {
      const loadersRequest = loaders.slice(loaderIndex, loaderIndex + 1 + (typeof number !== 'number' ? 0 : number)).map(x => x.request).join('!');
      cache[number] = `-!${loadersRequest}!`;
    }

    return cache[number];
  };
}

function getImportCode(imports, options) {
  let code = '';

  for (const item of imports) {
    const {
      importName,
      url,
      icss
    } = item;

    if (options.esModule) {
      if (icss && options.modules.namedExport) {
        code += `import ${options.modules.exportOnlyLocals ? '' : `${importName}, `}* as ${importName}_NAMED___ from ${url};\n`;
      } else {
        code += `import ${importName} from ${url};\n`;
      }
    } else {
      code += `var ${importName} = require(${url});\n`;
    }
  }

  return code ? `// Imports\n${code}` : '';
}

function normalizeSourceMapForRuntime(map, loaderContext) {
  const resultMap = map ? map.toJSON() : null;

  if (resultMap) {
    delete resultMap.file;
    resultMap.sourceRoot = '';
    resultMap.sources = resultMap.sources.map(source => {
      // Non-standard syntax from `postcss`
      if (source.indexOf('<') === 0) {
        return source;
      }

      const sourceType = getURLType(source);

      if (sourceType !== 'path-relative') {
        return source;
      }

      const resourceDirname = _path.default.dirname(loaderContext.resourcePath);

      const absoluteSource = _path.default.resolve(resourceDirname, source);

      const contextifyPath = normalizePath(_path.default.relative(loaderContext.rootContext, absoluteSource));
      return `webpack://${contextifyPath}`;
    });
  }

  return JSON.stringify(resultMap);
}

function getModuleCode(result, api, replacements, options, loaderContext) {
  if (options.modules.exportOnlyLocals === true) {
    return '';
  }

  const sourceMapValue = options.sourceMap ? `,${normalizeSourceMapForRuntime(result.map, loaderContext)}` : '';
  let code = JSON.stringify(result.css);
  let beforeCode = `var ___CSS_LOADER_EXPORT___ = ___CSS_LOADER_API_IMPORT___(${options.sourceMap});\n`;

  for (const item of api) {
    const {
      url,
      media,
      dedupe
    } = item;
    beforeCode += url ? `___CSS_LOADER_EXPORT___.push([module.id, ${JSON.stringify(`@import url(${url});`)}${media ? `, ${JSON.stringify(media)}` : ''}]);\n` : `___CSS_LOADER_EXPORT___.i(${item.importName}${media ? `, ${JSON.stringify(media)}` : dedupe ? ', ""' : ''}${dedupe ? ', true' : ''});\n`;
  }

  for (const item of replacements) {
    const {
      replacementName,
      importName,
      localName
    } = item;

    if (localName) {
      code = code.replace(new RegExp(replacementName, 'g'), () => options.modules.namedExport ? `" + ${importName}_NAMED___[${JSON.stringify((0, _camelcase.default)(localName))}] + "` : `" + ${importName}.locals[${JSON.stringify(localName)}] + "`);
    } else {
      const {
        hash,
        needQuotes
      } = item;
      const getUrlOptions = [].concat(hash ? [`hash: ${JSON.stringify(hash)}`] : []).concat(needQuotes ? 'needQuotes: true' : []);
      const preparedOptions = getUrlOptions.length > 0 ? `, { ${getUrlOptions.join(', ')} }` : '';
      beforeCode += `var ${replacementName} = ___CSS_LOADER_GET_URL_IMPORT___(${importName}${preparedOptions});\n`;
      code = code.replace(new RegExp(replacementName, 'g'), () => `" + ${replacementName} + "`);
    }
  }

  return `${beforeCode}// Module\n___CSS_LOADER_EXPORT___.push([module.id, ${code}, ""${sourceMapValue}]);\n`;
}

function dashesCamelCase(str) {
  return str.replace(/-+(\w)/g, (match, firstLetter) => firstLetter.toUpperCase());
}

function getExportCode(exports, replacements, options) {
  let code = '// Exports\n';
  let localsCode = '';

  const addExportToLocalsCode = (name, value) => {
    if (options.modules.namedExport) {
      localsCode += `export const ${(0, _camelcase.default)(name)} = ${JSON.stringify(value)};\n`;
    } else {
      if (localsCode) {
        localsCode += `,\n`;
      }

      localsCode += `\t${JSON.stringify(name)}: ${JSON.stringify(value)}`;
    }
  };

  for (const {
    name,
    value
  } of exports) {
    switch (options.modules.exportLocalsConvention) {
      case 'camelCase':
        {
          addExportToLocalsCode(name, value);
          const modifiedName = (0, _camelcase.default)(name);

          if (modifiedName !== name) {
            addExportToLocalsCode(modifiedName, value);
          }

          break;
        }

      case 'camelCaseOnly':
        {
          addExportToLocalsCode((0, _camelcase.default)(name), value);
          break;
        }

      case 'dashes':
        {
          addExportToLocalsCode(name, value);
          const modifiedName = dashesCamelCase(name);

          if (modifiedName !== name) {
            addExportToLocalsCode(modifiedName, value);
          }

          break;
        }

      case 'dashesOnly':
        {
          addExportToLocalsCode(dashesCamelCase(name), value);
          break;
        }

      case 'asIs':
      default:
        addExportToLocalsCode(name, value);
        break;
    }
  }

  for (const item of replacements) {
    const {
      replacementName,
      localName
    } = item;

    if (localName) {
      const {
        importName
      } = item;
      localsCode = localsCode.replace(new RegExp(replacementName, 'g'), () => {
        if (options.modules.namedExport) {
          return `" + ${importName}_NAMED___[${JSON.stringify((0, _camelcase.default)(localName))}] + "`;
        } else if (options.modules.exportOnlyLocals) {
          return `" + ${importName}[${JSON.stringify(localName)}] + "`;
        }

        return `" + ${importName}.locals[${JSON.stringify(localName)}] + "`;
      });
    } else {
      localsCode = localsCode.replace(new RegExp(replacementName, 'g'), () => `" + ${replacementName} + "`);
    }
  }

  if (options.modules.exportOnlyLocals) {
    code += options.modules.namedExport ? localsCode : `${options.esModule ? 'export default' : 'module.exports ='} {\n${localsCode}\n};\n`;
    return code;
  }

  if (localsCode) {
    code += options.modules.namedExport ? localsCode : `___CSS_LOADER_EXPORT___.locals = {\n${localsCode}\n};\n`;
  }

  code += `${options.esModule ? 'export default' : 'module.exports ='} ___CSS_LOADER_EXPORT___;\n`;
  return code;
}

async function resolveRequests(resolve, context, possibleRequests) {
  return resolve(context, possibleRequests[0]).then(result => {
    return result;
  }).catch(error => {
    const [, ...tailPossibleRequests] = possibleRequests;

    if (tailPossibleRequests.length === 0) {
      throw error;
    }

    return resolveRequests(resolve, context, tailPossibleRequests);
  });
}

function isUrlRequestable(url) {
  // Protocol-relative URLs
  if (/^\/\//.test(url)) {
    return false;
  } // `file:` protocol


  if (/^file:/i.test(url)) {
    return true;
  } // Absolute URLs


  if (/^[a-z][a-z0-9+.-]*:/i.test(url) && !matchNativeWin32Path.test(url)) {
    return false;
  } // `#` URLs


  if (/^#/.test(url)) {
    return false;
  }

  return true;
}

function sort(a, b) {
  return a.index - b.index;
}