// SPDX-License-Identifier: AGPL-3.0-only
'use strict';
const test = require('node:test');
const assert = require('node:assert/strict');
const fs = require('node:fs');
const path = require('node:path');
const textmate = require('vscode-textmate');
const oniguruma = require('vscode-oniguruma');

test('mixed HTML and every Hime-san delimiter has stable scopes', async () => {
  const root = path.join(__dirname, '..', '..');
  const wasm = fs.readFileSync(require.resolve('vscode-oniguruma/release/onig.wasm'));
  await oniguruma.loadWASM(wasm.buffer.slice(wasm.byteOffset, wasm.byteOffset + wasm.byteLength));
  const registry = new textmate.Registry({
    onigLib: Promise.resolve({createOnigScanner: (sources) => new oniguruma.OnigScanner(sources), createOnigString: (value) => new oniguruma.OnigString(value)}),
    loadGrammar: async (scopeName) => {
      if (scopeName === 'text.html.sando') return textmate.parseRawGrammar(fs.readFileSync(path.join(root, 'syntaxes', 'sando.tmLanguage.json'), 'utf8'), 'sando.tmLanguage.json');
      if (scopeName === 'source.go') return {scopeName: 'source.go', patterns: [{match: '\\b(?:package|func|if)\\b', name: 'keyword.control.go'}]};
      if (scopeName === 'text.html.basic') return {scopeName: 'text.html.basic', patterns: [{match: '</?[A-Za-z][^>]*>', name: 'meta.tag.html'}]};
      return null;
    },
  });
  const grammar = await registry.loadGrammar('text.html.sando');
  const lines = fs.readFileSync(path.join(__dirname, 'fixtures', 'mixed.sando'), 'utf8').trimEnd().split('\n');
  const seen = new Set();
  let stack = textmate.INITIAL;
  for (const line of lines) {
    const result = grammar.tokenizeLine(line, stack);
    stack = result.ruleStack;
    for (const token of result.tokens) for (const scope of token.scopes) seen.add(scope);
  }
  const snapshot = [...seen].filter((scope) => scope.includes('sando')).sort();
  assert.deepEqual(snapshot, [
    'comment.block.sando', 'component.composition.sando', 'expression.output.sando',
    'meta.embedded.block.sando.component', 'meta.embedded.block.sando.expression',
    'meta.embedded.block.sando.header', 'meta.embedded.block.sando.statement',
    'punctuation.definition.comment.begin.sando', 'punctuation.definition.comment.end.sando',
    'punctuation.section.embedded.begin.sando', 'punctuation.section.embedded.end.sando',
    'support.constant.language.sando', 'text.html.sando',
  ]);
  assert.ok(seen.has('meta.tag.html'), 'visible HTML was not delegated to the HTML grammar');
});