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 { execFileSync } from "node:child_process";
import { fileURLToPath, pathToFileURL } from "node:url";
import ts from "../../web/node_modules/typescript/lib/typescript.js";

const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "../..");
const matrixPath = path.join(repoRoot, "tests/golden/M12-05B/capability-matrix.json");
const inventoryPath = path.join(repoRoot, "tests/golden/M12-05A/format-inventory.json");
const evidencePath = path.join(repoRoot, "tests/golden/M12-05B/manifest.json");
const sourcePath = path.join(repoRoot, "web/protocol/io-format-capability-matrix.ts");
const temporary = fs.mkdtempSync(path.join(os.tmpdir(), "io-format-capability-matrix-"));

const sha256 = (bytes) => crypto.createHash("sha256").update(bytes).digest("hex");
const fileSha256 = (file) => sha256(fs.readFileSync(file));

try {
  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, []);
  const modulePath = path.join(temporary, "io-format-capability-matrix.mjs");
  fs.writeFileSync(modulePath, transpiled.outputText);
  const protocol = await import(pathToFileURL(modulePath));
  const evidence = JSON.parse(fs.readFileSync(evidencePath, "utf8"));
  assert.equal(evidence.task, "M12-05B");
  assert.equal(evidence.parentTask, "M12-05A");
  assert.equal(evidence.nextTask, "M12-05C");
  for (const artifact of Object.values(evidence.artifacts)) assert.equal(fileSha256(path.join(repoRoot, artifact.path)), artifact.sha256, artifact.path);

  const inventoryBytes = fs.readFileSync(inventoryPath);
  const matrixBytes = fs.readFileSync(matrixPath);
  const matrix = JSON.parse(matrixBytes);
  assert.equal(matrix.runtimeInventorySha256, sha256(inventoryBytes));
  const inventory = JSON.parse(inventoryBytes);
  const parsed = protocol.parseIOFormatCapabilityMatrix(matrix);
  assert.deepEqual(parsed.formats.map((entry) => entry.format), inventory.formats.map((entry) => entry.format));
  const runtimeByFormat = new Map(inventory.formats.map((entry) => [entry.format, entry]));
  for (const entry of parsed.formats) {
    const runtime = runtimeByFormat.get(entry.format);
    assert.equal(entry.runtimeImportStatus, runtime.import.runtimeStatus === "AVAILABLE" ? "AVAILABLE" : "OPERATOR_UNREGISTERED");
    assert.equal(entry.runtimeExportStatus, runtime.export.runtimeStatus === "AVAILABLE" ? "AVAILABLE" : "OPERATOR_UNREGISTERED");
    assert.equal(entry.operations.EXPORT.local.status, entry.format === "GLB" ? "READY" : "BLOCKED");
    assert.equal(entry.operations.EXPORT.local.execution, entry.format === "GLB" ? "LOCAL" : "NONE");
    assert.equal(entry.operations.EXPORT.server.status, "BLOCKED");
    assert.equal(entry.operations.IMPORT.local.status, "BLOCKED");
    assert.equal(entry.operations.IMPORT.server.status, "BLOCKED");
  }

  const regenerated = path.join(temporary, "capability-matrix.json");
  execFileSync(process.execPath, [path.join(repoRoot, "tools/web/generate-io-format-capability-matrix.mjs"), "--output", regenerated], { cwd: repoRoot });
  assert.deepEqual(fs.readFileSync(regenerated), matrixBytes, "capability matrix is not deterministic");
  process.stdout.write("io-format-capability-matrix-ok formats=7 local-glb-export=1 blocked-routes=27 runtime-bound=true\n");
}
finally {
  fs.rmSync(temporary, { recursive: true, force: true });
}