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import { exists } from "https://deno.land/std@0.122.0/fs/exists.ts";import { getVendorDir } from "../cli/pb/config.ts";import expandEntryPaths from "../cli/pb/cmds/gen/expandEntryPaths.ts";import { loadPollapoYml } from "../cli/pollapo/pollapoYml.ts";import { BuildConfig } from "../core/schema/builder.ts";import { Loader } from "../core/loader/index.ts";import combineLoader from "../core/loader/combineLoader.ts";import memoizeLoader from "../core/loader/memoizeLoader.ts";import {  createLoader as createDenoFsLoader,  fromFileUrl,  resolve,} from "../core/loader/deno-fs.ts";
export interface ProjectManager {  addProjectPath(projectPath: string): Promise<void>;  getProjectPath(filePath: string): string | undefined;  createBuildConfig(filePath: string): Promise<BuildConfig>;}
export function createProjectManager(): ProjectManager {  // sorted string array in descending order  // ex) ['file:///foo/baz', 'file:///foo/bar/baz', 'file:///foo/bar', 'file:///foo']  const projectPaths: string[] = [];  function getProjectPath(filePath: string): string | undefined {    return projectPaths.find((p) => filePath.startsWith(p));  }  return {    async addProjectPath(projectPath) {      projectPaths.push(projectPath);      projectPaths.sort().reverse();    },    getProjectPath,    async createBuildConfig(filePath) {      const projectPath = getProjectPath(filePath);      if (!projectPath) {        const roots = getVendorDirs();        const denoFsLoader = createDenoFsLoader({ roots });        return { loader: memoizeLoader(denoFsLoader), files: [filePath] };      }      const entryPaths = [projectPath + "/.pollapo", projectPath];      const files = await expandEntryPaths(entryPaths);      files.push(filePath);      const roots = [...entryPaths, ...getVendorDirs()];      const denoFsLoader = createDenoFsLoader({ roots });      const repo = await getPollapoRepo(projectPath);      if (!repo) return { loader: memoizeLoader(denoFsLoader), files };      return {        loader: memoizeLoader(combineLoader(          createPollapoRepoLoader(projectPath, repo),          denoFsLoader,        )),        files,      };    },  };}
function getVendorDirs() {  return [getVendorDir(), "/usr/local/include"];}
async function getPollapoRepo(  projectPath: string,): Promise<string | undefined> {  try {    const pollapoYmlPath = resolve(projectPath, "pollapo.yml");    const pollapoYml = await loadPollapoYml(fromFileUrl(pollapoYmlPath));    if (pollapoYml?.repo) return String(pollapoYml.repo);  } catch {}}
function createPollapoRepoLoader(projectPath: string, repo: string): Loader {  return {    async load(path) {      if (!path.startsWith(repo + "/")) return null;      const absolutePath = resolve(projectPath, path.slice(repo.length + 1));      const filePath = fromFileUrl(absolutePath);      if (!await exists(filePath)) return null;      return { absolutePath, data: await Deno.readTextFile(filePath) };    },  };}