import { Rule, SchematicContext, Tree } from '@angular-devkit/schematics';
import { dasherize } from '@angular-devkit/core/src/utils/strings';
import { Model } from '@vmfvmf/ywtc-lib';
import { getPrjSrd } from '../../router.gen';

export function gen(model: Model): Rule {
  return (tree: Tree, _context: SchematicContext) => {    
    
    const antMatchersPath = `ywtc-output/${getPrjSrd().prjNDashd}-backend/src/main/java/com/vmfvmf/${getPrjSrd().artifactId}/auth/config/AntMatchersFactory.java`;
    const updatedAntMatchers = updateAntMatchers(getFileContent(tree, antMatchersPath)!, model.name!);
    tree.overwrite(antMatchersPath, updatedAntMatchers);

    const urlEnumPath = `ywtc-output/${getPrjSrd().prjNDashd}-backend/src/main/java/com/vmfvmf/${getPrjSrd().artifactId}/auth/config/UrlList.java`;
    const updatedUrlEnumPath = updateUrlEnum(getFileContent(tree, urlEnumPath)!, model.name!);
    tree.overwrite(urlEnumPath, updatedUrlEnumPath);
    
    return tree;
  };
}

function getFileContent(tree: Tree, fileName: string) {
  if (!tree.exists(fileName)) {
    throw new Error(`File: ${fileName} NOT FOUND.`)
  }

  return tree.read(fileName)?.toString();
}

function updateAntMatchers(content: string, newUrl: string) {
  const authUrl = getNewUrlForAntMatcher(newUrl);
  if (content.includes(')/*authenticatedUrls*/')) {
    content = content.replace(')/*authenticatedUrls*/', '),\n\t\t\t' + authUrl);
  } else {
    content = content.replace('/*authenticatedUrls*/', authUrl);
  }
  return content;
}

function getNewUrlForAntMatcher(newUrl: string) {
  return `AntPathRequestMatcher.antMatcher(UrlList.${newUrl.toUpperCase()} + UrlList.W_CHLDRN)/*authenticatedUrls*/`;
}

function updateUrlEnum(content: string, newOption: string) {
  content = content.replace('/*jtc*/', `\tpublic static final String ${newOption.toUpperCase()} = "/${dasherize(newOption)}";\n/*jtc*/`);
  return content;
}