import { readdirSync, readFileSync, writeFileSync } from "node:fs";
import { basename, join } from "node:path";
import {
  buildDocSections,
  buildDocTitles,
  stripDocMeta,
} from "./markdown-docs";

const docsDir = new URL("../src/docs", import.meta.url);
const outputFile = new URL("../src/docs.generated.ts", import.meta.url);

const sourceDocs = Object.fromEntries(
  readdirSync(docsDir)
    .filter((fileName) => fileName.endsWith(".md"))
    .sort()
    .map((fileName) => [
      basename(fileName, ".md"),
      readFileSync(join(docsDir.pathname, fileName), "utf8"),
    ])
);

const docs = Object.fromEntries(
  Object.entries(sourceDocs).map(([docName, markdown]) => [
    docName,
    stripDocMeta(markdown),
  ])
);
const docTitles = buildDocTitles(sourceDocs);
const docSections = buildDocSections(sourceDocs);

const output = [
  "// This file is generated by scripts/generate-docs.ts.",
  "// Edit markdown files in src/docs instead.",
  `export const cliDocs = ${JSON.stringify(docs, null, 2)} as const;`,
  "",
  `export const cliDocTitles = ${JSON.stringify(docTitles, null, 2)} as const;`,
  "",
  `export const cliDocSections = ${JSON.stringify(docSections, null, 2)} as const;`,
  "",
  "export type CliDocName = keyof typeof cliDocs;",
  "",
].join("\n");

writeFileSync(outputFile, output, "utf8");