// @vitest-environment node

import fs from 'node:fs';
import path from 'node:path';
import { describe, expect, it } from 'vitest';

function read(relativePath: string): string {
  return fs.readFileSync(path.resolve(__dirname, relativePath), 'utf8');
}

function readJson<T>(relativePath: string): T {
  return JSON.parse(read(relativePath)) as T;
}

function getLeaf(record: Record<string, unknown>, dottedPath: string): unknown {
  return dottedPath.split('.').reduce<unknown>((value, key) => {
    if (!value || typeof value !== 'object' || Array.isArray(value)) {
      return undefined;
    }

    return (value as Record<string, unknown>)[key];
  }, record);
}

describe('ContractOverview i18n wiring contract', () => {
  it('T033: stat cards and top-level overview labels use translated keys', () => {
    const source = read('../../src/components/billing-dashboard/contracts/ContractOverview.tsx');
    const en = readJson<Record<string, unknown>>(
      '../../../../server/public/locales/en/msp/contracts.json'
    );

    expect(source).toContain("const { t } = useTranslation('msp/contracts');");

    const keyChecks = [
      'contractOverview.title',
      'contractOverview.stats.estimatedMonthlyValue',
      'contractOverview.stats.contractLines',
      'contractOverview.stats.totalServices',
      'contractOverview.stats.viewDetails',
      'contractOverview.stats.variable',
      'contractOverview.stats.variableSuffix',
      'common.moneyPlaceholder',
      'contractOverview.errors.failedToLoadOverview',
    ];

    for (const key of keyChecks) {
      expect(source).toContain(`t('${key}'`);
      expect(getLeaf(en, key)).toBeDefined();
    }
  });

  it('T034: line-card interpolation labels and empty states use translated keys', () => {
    const source = read('../../src/components/billing-dashboard/contracts/ContractOverview.tsx');
    const en = readJson<Record<string, unknown>>(
      '../../../../server/public/locales/en/msp/contracts.json'
    );

    const keyChecks = [
      'contractOverview.lines.serviceCountOne',
      'contractOverview.lines.serviceCountOther',
      'contractOverview.lines.includedServices',
      'contractOverview.lines.noServicesConfigured',
      'contractOverview.lines.expandAll',
      'contractOverview.lines.collapseAll',
      'contractOverview.lines.noContractLinesYet',
      'contractOverview.lines.noContractLinesDescription',
      'contractOverview.lines.addContractLines',
    ];

    for (const key of keyChecks) {
      expect(source).toContain(`t('${key}'`);
      expect(getLeaf(en, key)).toBeDefined();
    }

    expect(source).toContain('t(`contractOverview.frequency.${value}`');
    expect(getLeaf(en, 'contractOverview.frequency.annually')).toBeDefined();
    expect(getLeaf(en, 'contractOverview.frequency.biweekly')).toBeDefined();
    expect(getLeaf(en, 'contractOverview.frequency.weekly')).toBeDefined();
    expect(getLeaf(en, 'contractOverview.frequency.semi_annually')).toBeDefined();
  });
});