import assert from "node:assert/strict";
import crypto from "node:crypto";
import fs from "node:fs";
import os from "node:os";
import path from "node:path";
import { pathToFileURL } from "node:url";
import test from "node:test";
import ts from "typescript";

const root = path.resolve(import.meta.dirname, "../../..");
const temporary = fs.mkdtempSync(path.join(os.tmpdir(), "library-source-origin-unit-"));
const paths = ["asset-path.ts", "library-source-origin.ts"];
for (const name of paths) {
  const sourcePath = path.join(root, "web/protocol", name);
  const transpiled = ts.transpileModule(fs.readFileSync(sourcePath, "utf8"), {
    compilerOptions: { module: ts.ModuleKind.ES2022, target: ts.ScriptTarget.ES2022 },
    fileName: sourcePath,
    reportDiagnostics: true,
  });
  assert.deepEqual(transpiled.diagnostics, []);
  fs.writeFileSync(path.join(temporary, name.replace(".ts", ".mjs")), transpiled.outputText.replaceAll('from "./asset-path"', 'from "./asset-path.mjs"'));
}
const origin = await import(pathToFileURL(path.join(temporary, "library-source-origin.mjs")));
const manifest = JSON.parse(fs.readFileSync(path.join(root, "tests/golden/M12-04A/manifest.json"), "utf8"));
const sha256 = (file) => crypto.createHash("sha256").update(fs.readFileSync(path.join(root, file))).digest("hex");
const policy = { schemaVersion: 1, declaredHttpsOrigins: ["https://assets.example.test"] };
const digest = "a".repeat(64);

test("M12-04A binds the declared source-origin protocol and evidence artifacts", () => {
  assert.equal(manifest.task, "M12-04A");
  assert.equal(manifest.nextTask, "M12-04B");
  for (const artifact of Object.values(manifest.artifacts)) assert.equal(sha256(artifact.path), artifact.sha256, artifact.path);
});

test("M12-04A accepts declared HTTPS, project asset, and user-selected file sources", () => {
  assert.deepEqual(origin.acceptLibrarySource(policy, { schemaVersion: 1, kind: "HTTPS_ORIGIN", url: "https://assets.example.test/library/main.blend" }), { status: "READY", kind: "HTTPS_ORIGIN", canonicalLocator: "https://assets.example.test/library/main.blend" });
  assert.deepEqual(origin.acceptLibrarySource(policy, { schemaVersion: 1, kind: "PROJECT_ASSET", path: "libraries/main.blend" }), { status: "READY", kind: "PROJECT_ASSET", canonicalLocator: "project-assets/libraries/main.blend" });
  assert.deepEqual(origin.acceptLibrarySource(policy, { schemaVersion: 1, kind: "USER_SELECTED_FILE", selectionId: "file-selection:pick-1", fileName: "main.blend", byteLength: 128, sourceSha256: digest }), { status: "READY", kind: "USER_SELECTED_FILE", canonicalLocator: "user-file/file-selection:pick-1/main.blend" });
});

test("M12-04A rejects undeclared origins, credentials, unsafe paths, and missing policy declarations", () => {
  assert.throws(() => origin.acceptLibrarySource(policy, { schemaVersion: 1, kind: "HTTPS_ORIGIN", url: "https://other.example.test/main.blend" }), { code: "IO_EXTERNAL_URI_BLOCKED" });
  assert.throws(() => origin.acceptLibrarySource(policy, { schemaVersion: 1, kind: "HTTPS_ORIGIN", url: "https://user:pass@assets.example.test/main.blend" }), { code: "IO_EXTERNAL_URI_BLOCKED" });
  assert.throws(() => origin.acceptLibrarySource(policy, { schemaVersion: 1, kind: "PROJECT_ASSET", path: "../outside.blend" }), { code: "IO_EXTERNAL_URI_BLOCKED" });
  assert.throws(() => origin.parseLibrarySourcePolicy({ schemaVersion: 1, declaredHttpsOrigins: [] }), { code: "PROTOCOL_MISMATCH" });
});

test("M12-04A rejects malformed user-file identity and undeclared fields", () => {
  assert.throws(() => origin.parseLibrarySourceRequest({ schemaVersion: 1, kind: "USER_SELECTED_FILE", selectionId: "bad", fileName: "main.blend", byteLength: 1, sourceSha256: digest }), { code: "ASSET_MANIFEST_INVALID" });
  assert.throws(() => origin.parseLibrarySourceRequest({ schemaVersion: 1, kind: "USER_SELECTED_FILE", selectionId: "file-selection:pick-1", fileName: "../main.blend", byteLength: 1, sourceSha256: digest }), { code: "ASSET_MANIFEST_INVALID" });
  assert.throws(() => origin.parseLibrarySourceRequest({ schemaVersion: 1, kind: "PROJECT_ASSET", path: "main.blend", future: true }), { code: "ASSET_MANIFEST_INVALID" });
});

test.after(() => fs.rmSync(temporary, { recursive: true, force: true }));