/*
 *  testKey.ts
 *  Zyquo Cloud Web
 *
 *  Author: Simon-Pierre Boucher
 *  Mail: contact@spboucher.ai
 *
 *  Key validation, ported from the native ProviderClient extension: the
 *  cheapest authenticated call available — /models where supported, otherwise
 *  (Perplexity) a minimal non-streaming completion against the provider's
 *  cheapest catalog model. Returns round-trip latency in ms.
 */

import type { Provider } from '../types'
import { cheapestModel } from './catalog'
import { clientFor, PROVIDER_META } from './registry'
import { ProviderError } from './types'

export async function testKey(
  provider: Provider,
  apiKey: string,
  baseURLOverride?: string
): Promise<number> {
  const client = clientFor(provider)
  const start = performance.now()
  if (PROVIDER_META[provider].supportsModelListing) {
    await client.listModelIDs(apiKey, baseURLOverride)
  } else {
    const model = cheapestModel(provider)
    if (!model) throw ProviderError.noModelAvailable(provider)
    await client.complete(
      {
        model,
        messages: [
          { id: 'key-test', role: 'user', text: 'Reply with exactly: OK', createdAt: 0 },
        ],
        // Perplexity requires max_tokens ≥ 16 (probe-verified, docs/CORS-MATRIX.md).
        parameters: { maxTokens: 16 },
        stream: false,
        ...(baseURLOverride !== undefined ? { baseURLOverride } : {}),
      },
      apiKey
    )
  }
  return performance.now() - start
}