import assert from "node:assert/strict";
import fs from "node:fs";
import os from "node:os";
import path from "node:path";

const root = path.resolve(new URL("../..", import.meta.url).pathname);
const cachePath = path.join(root, "build_web_blender6", "CMakeCache.txt");
const cache = fs.readFileSync(cachePath, "utf8");
assert.match(cache, /^WITH_OPENVDB:BOOL=OFF$/m, "Browser OpenVDB must remain disabled; conversion belongs to desktop/server targets");

const protocol = fs.readFileSync(path.join(root, "web", "protocol", "volume-vdb.ts"), "utf8");
assert.match(protocol, /prepareVDBConversionInput/, "VDB conversion input validation is missing");
assert.match(protocol, /validateNanoVDBBundleManifest/, "NanoVDB bundle validation is missing");
assert.match(protocol, /gateNanoVDBPipeline/, "NanoVDB stage capability gates are missing");
assert.doesNotMatch(protocol, /export async function decodeVDBResource/, "Browser raw OpenVDB decode entry must not be restored");

const roots = [
  path.join(root, "resource-library"),
  path.join(root, "tests"),
  path.resolve(process.env.VDB_RESOURCE_ROOT ?? path.join(os.homedir(), "resource-library/blender-web-vdb")),
];
const vdbFiles = [];
function scan(directory) {
  if (!fs.existsSync(directory)) return;
  for (const entry of fs.readdirSync(directory, { withFileTypes: true })) {
    const fullPath = path.join(directory, entry.name);
    if (entry.isDirectory()) scan(fullPath);
    else if (/\.(?:vdb(?:\.gz)?|nvdb)$/i.test(entry.name)) vdbFiles.push(fullPath);
  }
}
for (const directory of roots) scan(directory);
const converterCandidates = [
  path.join(root, "build_vdb_tools", "vdb_to_nanovdb"),
  path.join(root, "tools", "vdb", "convert-openvdb-to-nanovdb"),
  path.join(root, "tools", "vdb", "convert-openvdb-to-nanovdb.py"),
];
const converterConfigured = converterCandidates.some((candidate) => fs.existsSync(candidate));
const rendererConfigured = fs.existsSync(path.join(root, "web", "app", "src", "render", "nanovdb-volume-renderer.ts"));
const serverConfigured = fs.existsSync(path.join(root, "tools", "vdb", "server", "vdb-job-service.mjs"));
const opfsConfigured = fs.existsSync(path.join(root, "web", "app", "src", "volume", "nanovdb-opfs.ts"));
const mainWriterConfigured = fs.readFileSync(path.join(root, "blender-5.2.0", "source", "blender", "web_engine", "web_engine_api.cpp"), "utf8").includes("setVolumeProperties");
const coreStatus = converterConfigured && serverConfigured && opfsConfigured && rendererConfigured && mainWriterConfigured && vdbFiles.some((file) => /\.vdb(?:\.gz)?$/i.test(file)) ? "READY" : "BLOCKED";
const releaseStatus = "BLOCKED";
assert.equal(coreStatus, "READY", "VDB core pipeline files or real resources are missing");
assert.equal(releaseStatus, "BLOCKED", "VDB release must remain blocked until viewport integration, advanced grids, and full goldens are present");
process.stdout.write(`vdb-availability-ok core=${coreStatus} release=${releaseStatus} browser-openvdb=disabled desktop=ready server=ready opfs=ready webgpu-core=ready main-roundtrip=ready viewport=blocked advanced-material=blocked resources=${vdbFiles.length}\n`);