// The generator's canonical inputs are THE SAME FILES the drift gate checks
// (conventions/* + build/*), resolved package-relative exactly like
// check-drift.ts's CLI entry — there is no second copy that can drift. A
// generated repo therefore passes the gate by construction: byte-verbatim
// files are emitted byte-verbatim, and the per-repo fill-ins live only where
// the gate already masks or leaves structure free (the workflows' `product:`
// line, the root tsconfig include list, the .gitignore tail, the wrapper
// around the build-image bootstrap, the seed's pins).
import { readFileSync } from "node:fs";
import { join } from "node:path";

const conventionsDir = join(import.meta.dir, "..", "conventions");
const buildDir = join(import.meta.dir, "..", "build");

export interface Canon {
  core: string;
  flake: string;
  /** build/ctl-shell.nix, emitted as nix/ctl-shell.nix — the flake imports it. */
  ctlShell: string;
  flakeLock: string;
  bump: string;
  botPrs: string;
  checks: string;
  biome: string;
  tsconfigBase: string;
  dprint: string;
  buildImageBootstrap: string;
  buildImage: string;
  smoke: string;
  /** conventions/build-docs.yml — the embedded docs workflow a turnkey carries. */
  buildDocs: string;
  gitignoreCore: string;
  invariantsTemplate: string;
  /** conventions/demo.sh, emitted as scripts/demo. */
  demoShim: string;
  /** conventions/server-install.sh and server-uninstall.sh, emitted as
   *  deployment/install.sh and deployment/uninstall.sh. */
  serverInstall: string;
  serverUninstall: string;
  /** doc-guide/with-display.sh, emitted as scripts/with-display.sh — the docs
   *  workflow invokes it by that repo-local path. */
  withDisplay: string;
}

export function loadCanon(): Canon {
  return {
    core: readFileSync(join(conventionsDir, "CLAUDE.core.md"), "utf8"),
    flake: readFileSync(join(buildDir, "flake.nix"), "utf8"),
    ctlShell: readFileSync(join(buildDir, "ctl-shell.nix"), "utf8"),
    flakeLock: readFileSync(join(buildDir, "flake.lock"), "utf8"),
    bump: readFileSync(join(conventionsDir, "bump.yml"), "utf8"),
    botPrs: readFileSync(join(conventionsDir, "bot-prs.yml"), "utf8"),
    checks: readFileSync(join(conventionsDir, "checks.yml"), "utf8"),
    buildDocs: readFileSync(join(conventionsDir, "build-docs.yml"), "utf8"),
    withDisplay: readFileSync(join(conventionsDir, "..", "doc-guide", "with-display.sh"), "utf8"),
    biome: readFileSync(join(conventionsDir, "biome.base.json"), "utf8"),
    tsconfigBase: readFileSync(join(conventionsDir, "tsconfig.base.json"), "utf8"),
    dprint: readFileSync(join(conventionsDir, "dprint.base.jsonc"), "utf8"),
    buildImageBootstrap: readFileSync(join(buildDir, "build-image.bootstrap.sh"), "utf8"),
    buildImage: readFileSync(join(conventionsDir, "build-image.yml"), "utf8"),
    smoke: readFileSync(join(conventionsDir, "smoke.yml"), "utf8"),
    gitignoreCore: readFileSync(join(conventionsDir, "gitignore.core"), "utf8"),
    invariantsTemplate: readFileSync(join(import.meta.dir, "..", "testing", "INVARIANTS.template.md"), "utf8"),
    demoShim: readFileSync(join(conventionsDir, "demo.sh"), "utf8"),
    serverInstall: readFileSync(join(conventionsDir, "server-install.sh"), "utf8"),
    serverUninstall: readFileSync(join(conventionsDir, "server-uninstall.sh"), "utf8"),
  };
}

export function loadAsset(name: string): string {
  return readFileSync(join(import.meta.dir, "assets", name), "utf8");
}

/** The `product:` value in the shared workflows — the one line the drift gate
 *  masks. The dashboard key drops the `norsk-` prefix by fleet convention
 *  (norsk-reuters reports as `reuters`). */
export const PRODUCT_SENTINEL = "__PRODUCT__";