/* Census VALUE coverage: every runtime name the census uses must exist on
 * the adapter with the right typeof — enums as objects with the symbolic
 * keys the frontend reads, helpers and guards as functions. The deferred
 * list (the survey's MISSING dispositions that stay in the 5.9.3 islands)
 * is pinned too: if a later tsgo release grows one of them, this says so. */

import { expect, test } from "vitest";
import { ad } from "./harness.js";

const VALUE_FUNCTIONS = [
  // pure-AST helpers and program surface
  "forEachChild", "getModifiers", "canHaveModifiers", "getCombinedNodeFlags",
  "getCombinedModifierFlags", "getLineAndCharacterOfPosition", "flattenDiagnosticMessageText",
  "tokenToString", "isExternalModule", "createProgram", "getPreEmitDiagnostics",
  "findConfigFile",
  // the renamed guards under their census names
  "isParameter", "isPropertySignature", "isStringLiteralLike", "isFunctionLike",
  "isGetAccessor", "isSetAccessor", "isAccessor",
] as const;

const ENUMS: [name: string, keys: string[]][] = [
  ["SyntaxKind", ["Identifier", "CallExpression", "TrueKeyword", "FalseKeyword", "NullKeyword", "DefaultKeyword", "EqualsToken", "SourceFile"]],
  ["TypeFlags", ["String", "Number", "Boolean", "Undefined", "Null", "Object", "Union", "StringLiteral", "NumberLiteral", "BooleanLiteral", "EnumLiteral", "Never", "Unknown", "Any", "BigInt", "ESSymbol", "TypeParameter", "Intersection", "IndexedAccess"]],
  ["NodeFlags", ["Const", "Let", "None"]],
  ["SymbolFlags", ["Alias", "Function", "Class", "Interface", "TypeAlias", "Variable", "Property", "Method", "EnumMember", "BlockScopedVariable"]],
  ["ModifierFlags", ["Export", "Default", "Async", "Static", "Readonly", "Abstract", "Ambient", "Private", "Protected", "Public"]],
  ["ObjectFlags", ["Reference", "Tuple", "Anonymous", "Class", "Interface"]],
  ["ElementFlags", ["Required", "Optional", "Rest", "Variadic"]],
  ["ModuleKind", ["ESNext", "CommonJS", "NodeNext", "Preserve"]],
  ["ModuleResolutionKind", ["Bundler", "Node16", "NodeNext"]],
  ["ScriptTarget", ["ESNext", "ES2023"]],
  ["ScriptKind", ["TS", "JS", "JSON"]],
  ["DiagnosticCategory", ["Error", "Warning", "Suggestion", "Message"]],
];

/* The survey's MISSING list that stays 5.9.3-hosted (islands) — the adapter
 * must NOT grow look-alikes silently; phase 2 keeps these imports on the
 * old package. */
const DEFERRED = [
  "createSourceFile", "preProcessFile", "transpileModule",
  "resolveModuleName", "resolveTypeReferenceDirective",
  "readConfigFile", "parseJsonConfigFileContent",
] as const;

test("every census value function is exported and callable", () => {
  const surface = ad as never as Record<string, unknown>;
  for (const name of VALUE_FUNCTIONS) {
    expect(typeof surface[name], name).toBe("function");
  }
  expect(typeof ad.sys.fileExists).toBe("function");
  expect(typeof ad.sys.readFile).toBe("function");
  expect(typeof ad.sys.directoryExists).toBe("function");
});

test("every census enum re-exports with its symbolic keys", () => {
  const surface = ad as never as Record<string, Record<string, unknown>>;
  for (const [name, keys] of ENUMS) {
    const enumObject = surface[name];
    expect(enumObject, name).toBeTypeOf("object");
    for (const key of keys) {
      expect(typeof enumObject![key], `${name}.${key}`).toBe("number");
    }
  }
  // InternalSymbolName is string-valued, checked apart from the numerics.
  expect(typeof ad.InternalSymbolName.Default).toBe("string");
  expect(typeof ad.InternalSymbolName.ExportEquals).toBe("string");
});

test("the deferred island surface stays deferred (documented, not shimmed)", () => {
  const surface = ad as never as Record<string, unknown>;
  for (const name of DEFERRED) {
    expect(surface[name], name).toBeUndefined();
  }
});