/**
 * Collect all unique timestamps from series list and use it to fill
 * missing points by null.
 */
function mergeSeriesByTime(seriesList) {
  let timestamps = [];
  for (let i = 0; i < seriesList.length; i++) {
    const seriesPoints = seriesList[i].datapoints;
    for (let j = 0; j < seriesPoints.length; j++) {
      timestamps.push(seriesPoints[j][POINT_TIME_INDEX]);
    }
  }
  timestamps = sortedUniq(timestamps.sort());

  for (let i = 0; i < seriesList.length; i++) {
    const seriesPoints = seriesList[i].datapoints;
    const seriesTimestamps = seriesPoints.map(p => p[POINT_TIME_INDEX]);
    const extendedSeries = [];
    let pointIndex;
    for (let j = 0; j < timestamps.length; j++) {
      pointIndex = sortedIndexOf(seriesTimestamps, timestamps[j]);
      if (pointIndex !== -1) {
        extendedSeries.push(seriesPoints[pointIndex]);
      } else {
        extendedSeries.push([null, timestamps[j]]);
      }
    }
    seriesList[i].datapoints = extendedSeries;
  }
  return seriesList;
}

async function main() {
    const commonTypes: string[] = [];
    const tsconfigPath = path.join("..", "tsconfig.json");
    const tsconfigFile = await readFile(tsconfigPath);
    lineBreak = _.find(["\r\n", "\n", "\r"], x => tsconfigFile.includes(x)) || "\n";

    // Read each function definition and fp-ify it
    const subfolders = ["common"];
    const promises: Array<Promise<string[]>> = [];
    for (const subfolder of subfolders) {
        promises.push(new Promise<string[]>((resolve, reject) => {
            fs.readdir(path.join("..", subfolder), (err, files) => {
                if (err) {
                    console.error(`failed to list directory contents for '${subfolder}': `, err);
                    reject(err);
                    return;
                }
                const filePaths = files.map(f => path.join("..", subfolder, f));
                try {
                    resolve(processDefinitions(filePaths, commonTypes));
                } catch (e) {
                    console.error(`failed to process files in '${subfolder}': `, e);
                    reject(e);
                }
            });
        }));
    }

    let functionNames: string[];
    try {
        functionNames = _.flatten(await Promise.all(promises));
    } catch (err) {
        console.error("Failed to parse all functions: ", err);
        return;
    }
    functionNames = _.sortedUniq(_.sortBy(functionNames, _.toLower));
    const fpFile = [
        "// AUTO-GENERATED: do not modify this file directly.",
        "// If you need to make changes, modify generate-fp.ts (if necessary), then open a terminal in types/lodash/scripts, and do:",
        "// npm run fp",
        "",
        ...functionNames.map(f => `import ${f} = require("./fp/${f}");`),
        "",
        "export = _;",
        "",
        "declare const _: _.LoDashFp;",
        "declare namespace _ {",
        "    interface LoDashFp {",
        ...functionNames.map(f => `        ${f}: typeof ${f};`),
        "    }",
        "}",
        "",
        "// Backward compatibility with --target es5",
        "declare global {",
        "    // tslint:disable-next-line:no-empty-interface",
        "    interface Set<T> { }",
        "    // tslint:disable-next-line:no-empty-interface",
        "    interface Map<K, V> { }",
        "    // tslint:disable-next-line:no-empty-interface",
        "    interface WeakSet<T> { }",
        "    // tslint:disable-next-line:no-empty-interface",
        "    interface WeakMap<K extends object, V> { }",
        "}",
        "",
    ].join(lineBreak);
    fs.writeFile(path.join("..", "fp.d.ts"), fpFile, (err) => {
        if (err)
            console.error("Failed to write fp.d.ts: ", err);
    });

    // Make sure the generated files are listed in tsconfig.json, so they are included in the lint checks
    const tsconfig = tsconfigFile.split(lineBreak).filter(row => !row.includes("fp/") || row.includes("fp/convert.d.ts"));
    const newRows = functionNames.map(f => `        "fp/${f}.d.ts",`);
    newRows[newRows.length - 1] = newRows[newRows.length - 1].replace(",", "");

    const insertIndex = _.findLastIndex(tsconfig, row => row.trim() === "]"); // Assume "files" is the last array
    if (!tsconfig[insertIndex - 1].endsWith(","))
        tsconfig[insertIndex - 1] += ",";
    tsconfig.splice(insertIndex, 0, ...newRows);

    fs.writeFile(tsconfigPath, tsconfig.join(lineBreak), (err) => {
        if (err)
            console.error(`Failed to write ${tsconfigPath}: `, err);
    });
}

  private static buildFiles(
    files: models.IFileCollection,
    hasDefaultLightFile: boolean,
  ) {
    const sts = constants.iconsManifest;
    return sortedUniq(
      sortBy(
        files.supported.filter(x => !x.disabled && x.icon),
        item => item.icon,
      ),
    ).reduce(
      (old, current) => {
        const defs = old.defs;
        const names = old.names;
        const languageIds = old.languageIds;
        const light = old.light;
        const icon = current.icon;
        const hasLightVersion = current.light;
        const iconFileType = `${sts.fileTypePrefix}${icon}`;
        const iconFileLightType = `${sts.fileTypeLightPrefix}${icon}`;
        const iconFileExtension = Utils.fileFormatToString(current.format);
        const filename = `${
          hasLightVersion ? iconFileLightType : iconFileType
        }${sts.iconSuffix}${iconFileExtension}`;
        const fileIconPath = this.getIconPath(filename);
        const filePath = Utils.pathUnixJoin(fileIconPath, iconFileType);
        const fileLightPath = Utils.pathUnixJoin(
          fileIconPath,
          iconFileLightType,
        );
        const iconFileDefinition = `${sts.definitionFilePrefix}${icon}`;
        const iconFileLightDefinition = `${
          sts.definitionFileLightPrefix
        }${icon}`;
        const isFilename = current.filename;

        defs[iconFileDefinition] = {
          iconPath: `${filePath}${sts.iconSuffix}${iconFileExtension}`,
        };

        if (hasDefaultLightFile && !hasLightVersion) {
          defs[iconFileLightDefinition] = {
            iconPath: `${filePath}${sts.iconSuffix}${iconFileExtension}`,
          };
        }

        if (hasLightVersion) {
          defs[iconFileLightDefinition] = {
            iconPath: `${fileLightPath}${sts.iconSuffix}${iconFileExtension}`,
          };
        }

        if (current.languages) {
          const assignLanguages = langId => {
            languageIds[langId] = iconFileDefinition;
          };
          const assignLanguagesLight = langId => {
            light.languageIds[langId] = hasLightVersion
              ? iconFileLightDefinition
              : iconFileDefinition;
          };

          current.languages.forEach(langIds => {
            if (Array.isArray(langIds.ids)) {
              langIds.ids.forEach(id => {
                assignLanguages(id);
                assignLanguagesLight(id);
              });
            } else {
              assignLanguages(langIds.ids);
              assignLanguagesLight(langIds.ids);
            }
          });
        }

        const populateFn = (extension: string) => {
          if (isFilename) {
            names.fileNames[extension] = iconFileDefinition;
            light.fileNames[extension] = hasLightVersion
              ? iconFileLightDefinition
              : iconFileDefinition;
          } else {
            const noDotExtension = Utils.removeFirstDot(extension);
            names.fileExtensions[noDotExtension] = iconFileDefinition;
            light.fileExtensions[noDotExtension] = hasLightVersion
              ? iconFileLightDefinition
              : iconFileDefinition;
          }
        };

        current.extensions.forEach(populateFn);

        const hasGlobDefinitions =
          current.filenamesGlob &&
          !!current.filenamesGlob.length &&
          current.extensionsGlob &&
          !!current.extensionsGlob.length;

        if (hasGlobDefinitions) {
          Utils.combine(current.filenamesGlob, current.extensionsGlob).forEach(
//.........这里部分代码省略.........