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// Embedding / rerank / clarifai provider key validators. Extracted from validation.ts (god-file
// decomposition) — top-level functions with no dispatcher-state captures; behavior is byte-identical
// to the original inline defs.
import { normalizeBaseUrl, addModelsSuffix, resolveChatUrl } from "./urlHelpers";
import { buildBearerHeaders, buildClarifaiHeaders } from "./headers";
import { toValidationErrorResult, validationRead, validationWrite } from "./transport";

export async function validateClarifaiProvider({ apiKey, providerSpecificData = {} }: any) {
  const baseUrl =
    normalizeBaseUrl(providerSpecificData.baseUrl) || "https://api.clarifai.com/v2/ext/openai/v1";
  const modelsUrl = addModelsSuffix(baseUrl);

  try {
    const modelsRes = await validationRead(modelsUrl, {
      method: "GET",
      headers: buildClarifaiHeaders(apiKey, providerSpecificData),
    });

    if (modelsRes.ok) {
      return { valid: true, error: null, method: "clarifai_models" };
    }

    if (modelsRes.status === 401 || modelsRes.status === 403) {
      return { valid: false, error: "Invalid API key" };
    }

    const chatUrl = resolveChatUrl("clarifai", baseUrl, providerSpecificData);
    const chatRes = await validationWrite(chatUrl, {
      method: "POST",
      headers: buildClarifaiHeaders(apiKey, providerSpecificData),
      body: JSON.stringify({
        model:
          providerSpecificData?.validationModelId || "openai/chat-completion/models/gpt-oss-120b",
        messages: [{ role: "user", content: "test" }],
        max_tokens: 1,
      }),
    });

    if (chatRes.ok || chatRes.status === 400 || chatRes.status === 422 || chatRes.status === 429) {
      return { valid: true, error: null, method: "clarifai_chat_probe" };
    }

    if (chatRes.status === 401 || chatRes.status === 403) {
      return { valid: false, error: "Invalid API key" };
    }

    if (chatRes.status === 404 || chatRes.status === 405) {
      return { valid: false, error: "Provider validation endpoint not supported" };
    }

    if (chatRes.status >= 500) {
      return { valid: false, error: `Provider unavailable (${chatRes.status})` };
    }

    return { valid: true, error: null, method: "clarifai_chat_probe" };
  } catch (error: any) {
    return toValidationErrorResult(error);
  }
}

export async function validateEmbeddingApiProvider({
  apiKey,
  providerSpecificData = {},
  url,
  modelId,
}: any) {
  if (!url) {
    return { valid: false, error: "Missing embedding endpoint" };
  }

  try {
    const response = await validationWrite(url, {
      method: "POST",
      headers: buildBearerHeaders(apiKey, providerSpecificData),
      body: JSON.stringify({
        model: providerSpecificData?.validationModelId || modelId,
        input: ["test"],
      }),
    });

    if (response.status === 401 || response.status === 403) {
      return { valid: false, error: "Invalid API key" };
    }

    if (
      response.ok ||
      response.status === 400 ||
      response.status === 422 ||
      response.status === 429
    ) {
      return { valid: true, error: null };
    }

    if (response.status >= 500) {
      return { valid: false, error: `Provider unavailable (${response.status})` };
    }

    return { valid: false, error: `Validation failed: ${response.status}` };
  } catch (error: any) {
    return toValidationErrorResult(error);
  }
}

export async function validateRerankApiProvider({ apiKey, providerSpecificData = {}, url, modelId }: any) {
  if (!url) {
    return { valid: false, error: "Missing rerank endpoint" };
  }

  try {
    const response = await validationWrite(url, {
      method: "POST",
      headers: buildBearerHeaders(apiKey, providerSpecificData),
      body: JSON.stringify({
        model: providerSpecificData?.validationModelId || modelId,
        query: "test",
        documents: ["test"],
        top_n: 1,
        return_documents: false,
      }),
    });

    if (response.status === 401 || response.status === 403) {
      return { valid: false, error: "Invalid API key" };
    }

    if (
      response.ok ||
      response.status === 400 ||
      response.status === 422 ||
      response.status === 429
    ) {
      return { valid: true, error: null };
    }

    if (response.status >= 500) {
      return { valid: false, error: `Provider unavailable (${response.status})` };
    }

    return { valid: false, error: `Validation failed: ${response.status}` };
  } catch (error: any) {
    return toValidationErrorResult(error);
  }
}