#!/usr/bin/env node
/**
 * Builds src/ui/settings/settings-search-index.ts: the i18n keys each core
 * settings section shows, so the Settings search can match on any label in
 * a section without mounting it. Run it after changing a settings section.
 *
 * --check fails when the committed file is out of date.
 */

const fs = require("node:fs");
const path = require("node:path");

const ROOT = path.resolve(__dirname, "..");
const SIDEBAR = path.join(ROOT, "src", "ui", "sidebar");
const OUT = path.join(
  ROOT,
  "src",
  "ui",
  "settings",
  "settings-search-index.ts",
);

function keysIn(text) {
  return [
    ...new Set([...text.matchAll(/\bt\(\s*"([\w.-]+)"/g)].map((m) => m[1])),
  ];
}

function read(file) {
  return fs.readFileSync(path.join(SIDEBAR, file), "utf8");
}

/** The body of one exported or local function, by name. */
function functionBody(source, name) {
  const start = source.search(new RegExp(`function ${name}\\b`));
  if (start < 0) throw new Error(`No function ${name}`);
  const next = source.slice(start + 1).search(/\n(export )?function \w+/);
  return next < 0 ? source.slice(start) : source.slice(start, start + 1 + next);
}

/** Profile sections, split on their AccordionSection ids. */
function profileSections() {
  const source = read("UserProfilePanel.tsx");
  const lines = source.split("\n");
  const starts = [];
  lines.forEach((line, i) => {
    if (/^\s{6}<AccordionSection\b/.test(line)) starts.push(i);
  });
  const out = {};
  starts.forEach((start, k) => {
    const end = k + 1 < starts.length ? starts[k + 1] : lines.length;
    const chunk = lines.slice(start, end).join("\n");
    const id = (chunk.match(/\bid="([^"]+)"/) || [])[1];
    if (id) out[id] = keysIn(chunk);
  });
  out.interface = [
    ...new Set([
      ...(out.interface ?? []),
      ...keysIn(read("InterfacePresetSettings.tsx")),
    ]),
  ];
  out.security = [
    ...new Set([
      ...(out.security ?? []),
      ...keysIn(read("AuthEnrollmentSections.tsx")),
      ...keysIn(functionBody(source, "PasswordChangeSection")),
    ]),
  ];
  out["api-keys"] = [
    ...new Set([
      ...(out["api-keys"] ?? []),
      ...keysIn(functionBody(source, "NewApiKeyDialog")),
    ]),
  ];
  out.keybindings = keysIn(
    fs.readFileSync(
      path.join(ROOT, "src", "ui", "settings", "KeybindingsSettings.tsx"),
      "utf8",
    ),
  );
  return out;
}

function adminSections() {
  const settings = read("AdminSettingsSections.tsx");
  const management = read("AdminManagementSections.tsx");
  return {
    "admin-general": [
      ...new Set([
        ...keysIn(functionBody(settings, "AdminGeneralSettingsSection")),
        ...keysIn(read("AdminPluginDeveloperMode.tsx")),
      ]),
    ],
    "admin-users": [
      ...new Set([
        ...keysIn(functionBody(management, "AdminUsersSection")),
        ...keysIn(read("AdminUserDialogs.tsx")),
      ]),
    ],
    "admin-sessions": keysIn(functionBody(management, "AdminSessionsSection")),
    "admin-roles": keysIn(functionBody(management, "AdminRolesSection")),
    "admin-host-defaults": [
      ...new Set([
        ...keysIn(functionBody(settings, "AdminHostDefaultsSection")),
        ...keysIn(read("AdminHostTags.tsx")),
      ]),
    ],
    "admin-branding": keysIn(read("AdminBrandingSection.tsx")),
    "admin-database": keysIn(functionBody(settings, "AdminDatabaseSection")),
    "admin-ssl": keysIn(functionBody(settings, "AdminSSLSection")),
    "admin-api-keys": keysIn(read("AdminApiKeysSection.tsx")),
    "admin-audit-log": keysIn(read("AdminAuditLogSection.tsx")),
    updates: keysIn(
      fs.readFileSync(
        path.join(ROOT, "src", "ui", "settings", "UpdatesSettings.tsx"),
        "utf8",
      ),
    ),
  };
}

function render() {
  const index = { ...profileSections(), ...adminSections() };
  const body = Object.entries(index)
    .sort(([a], [b]) => a.localeCompare(b))
    .map(
      ([id, keys]) =>
        `  ${JSON.stringify(id)}: [\n${keys
          .sort()
          .map((key) => `    ${JSON.stringify(key)},`)
          .join("\n")}\n  ],`,
    )
    .join("\n");
  return `// Generated by scripts/generate-settings-search-index.cjs. Do not edit.\n\n/** The i18n keys each core settings section shows, for search. */\nexport const SETTINGS_SEARCH_INDEX: Record<string, string[]> = {\n${body}\n};\n`;
}

const next = render();
if (process.argv.includes("--check")) {
  const current = fs.existsSync(OUT) ? fs.readFileSync(OUT, "utf8") : "";
  if (current !== next) {
    console.error(
      "src/ui/settings/settings-search-index.ts is out of date. Run: node scripts/generate-settings-search-index.cjs",
    );
    process.exit(1);
  }
} else {
  fs.writeFileSync(OUT, next);
  console.log(`Wrote ${path.relative(ROOT, OUT)}`);
}