// this file contains the implementation of the standard gulp api
import * as plugins from './smartgulp.plugins.js';
import { GulpStream } from './smartgulp.classes.gulpstream.js';
import { Transform } from 'node:stream';

import { SmartFile } from '@push.rocks/smartfile';

const smartFileFactory = plugins.smartfile.SmartFileFactory.nodeFs();

const toPosixPath = (pathArg: string): string => pathArg.split(plugins.path.sep).join('/');

const getGlobBaseAndPattern = (globPatternArg: string): { baseDir: string; matchPattern: string } => {
  const normalizedPattern = toPosixPath(globPatternArg);
  const pathParts = normalizedPattern.split('/');
  const firstGlobIndex = pathParts.findIndex((pathPartArg) => /[*?[\]{}]/.test(pathPartArg));

  if (firstGlobIndex === -1) {
    return {
      baseDir: plugins.path.dirname(globPatternArg),
      matchPattern: plugins.path.basename(globPatternArg),
    };
  }

  return {
    baseDir: pathParts.slice(0, firstGlobIndex).join('/') || '.',
    matchPattern: pathParts.slice(firstGlobIndex).join('/'),
  };
};

export let src = (minimatchPathArrayArg: string[]): Transform => {
  const gulpStream = new GulpStream();
  const handleFiles = async (): Promise<void> => {
    let smartfileArray: SmartFile[] = [];
    for (const minimatchPath of minimatchPathArrayArg) {
      const { baseDir, matchPattern } = getGlobBaseAndPattern(minimatchPath);
      const virtualDirectory = await smartFileFactory.virtualDirectoryFromPath(
        plugins.path.resolve(process.cwd(), baseDir)
      );
      const localSmartfileArray = virtualDirectory
        .listFiles()
        .filter((fileArg) => plugins.minimatch(toPosixPath(fileArg.relative), matchPattern, { dot: true }));
      smartfileArray = [...smartfileArray, ...localSmartfileArray];
    }
    await gulpStream.pipeSmartfileArray(smartfileArray);
  };
  handleFiles().catch((err) => {
    console.log(err);
  });
  return gulpStream.stream;
};

export let dest = (dirArg: string) => {
  const stream = new plugins.smartstream.SmartDuplex({
    objectMode: true,
    writeFunction: async (fileArg: SmartFile) => {
      await fileArg.writeToDir(dirArg);
    },
  });
  return stream;
};

export let replace = () => {
  const stream = new plugins.smartstream.SmartDuplex({
    objectMode: true,
    writeFunction: async (fileArg: SmartFile) => {
      await fileArg.write();
    },
  });
  return stream;
};