// Assemble the plugin's skill content: the dsh-specific prelude (committed in
// this package at skill/prelude.md) followed VERBATIM by the canonical CLI
// skill body (repo-root skill/SKILL.md — the same source crates/bsk-cli's
// build.rs mirrors, so the two can never drift apart). The original's YAML
// frontmatter is stripped: name/description are supplied by the registration.
// Output: src/skill-content.generated.ts (gitignored, built before tsdown and
// before vitest) so the markdown ships inlined in the bundle and registration
// is a pure in-memory read — never a per-step disk access.
import { readFileSync, writeFileSync } from "node:fs";
import { dirname, join } from "node:path";
import { fileURLToPath } from "node:url";

const here = dirname(fileURLToPath(import.meta.url));
const pkg = join(here, "..");
const prelude = readFileSync(join(pkg, "skill", "prelude.md"), "utf8");
const upstream = readFileSync(join(pkg, "..", "..", "skill", "SKILL.md"), "utf8");

function stripFrontmatter(markdown) {
  if (!markdown.startsWith("---\n")) return markdown;
  const end = markdown.indexOf("\n---\n", 4);
  return end === -1 ? markdown : markdown.slice(end + 5).replace(/^\s*\n/, "");
}

const NAME = "browser-skill";
const DESCRIPTION =
  "Browser automation against the user's logged-in Chromium through this plugin's browser_* " +
  "tools (bsk engine): visit and read pages, fill forms, click through flows, scrape data, " +
  "smoke-test UI changes. Use when a task needs a real browser; requires the bsk CLI and the " +
  "browser-skill extension connected.";

const content = `${prelude.trim()}\n\n${stripFrontmatter(upstream).trim()}\n`;

const banner =
  "// GENERATED by scripts/build-skill-content.mjs — do not edit.\n" +
  "// Sources: skill/prelude.md (this package) + ../../../skill/SKILL.md (repo root).\n";

writeFileSync(
  join(pkg, "src", "skill-content.generated.ts"),
  `${banner}export const BSK_SKILL_NAME = ${JSON.stringify(NAME)};\n` +
    `export const BSK_SKILL_DESCRIPTION = ${JSON.stringify(DESCRIPTION)};\n` +
    `export const BSK_SKILL_MARKDOWN = ${JSON.stringify(content)};\n`,
);
console.log(`skill-content.generated.ts written (${content.length} chars)`);