import { Rule, Tree, chain, applyTemplates, apply, url, SchematicsException, noop, mergeWith } from "@angular-devkit/schematics";
import { strings } from "@angular-devkit/core";
import { getProject, buildDefaultPath } from "../utility/project";
import { parseName } from '../utility/parse-name';
import { applyLintFix } from '../utility/lint-fix';

export default function(options: any): Rule {
  return (host: Tree) => {
    if (!options.project) {
      throw new SchematicsException('Option (project) is required.');
    }
    const project = getProject(host, options.project);

    // console.log(`project `, project);
    // console.log(`project `, host);

    // console.log(`options 1 `, options);

    if (options.path === undefined) {
      options.path = buildDefaultPath(project);
    }

    const parsedPath = parseName(options.path, options.name);
    // console.log(`options `, options);
    // console.log(`project `, project);
    // console.log(`buildDefaultPath `, buildDefaultPath(project));
    // console.log(`parsedPath `, parsedPath);

    options.name = parsedPath.name;
    options.path = parsedPath.path;

    const templateSource = apply(url('./files'), [
      applyTemplates({
        ...strings,
        'if-flat': (s: string) => options.flat ? '' : s,
        ...options,
      })
    ]);

    return chain([
      mergeWith(templateSource),
      options.lintFix ? applyLintFix(options.path) : noop(),
    ]);
};
}