import { ensureAuthProfileStore, resolveAuthProfileOrder } from "../agents/auth-profiles.js";
import { resolveEnvApiKey } from "../agents/model-auth.js";
import {
  formatApiKeyPreview,
  normalizeApiKeyInput,
  validateApiKeyInput,
} from "./auth-choice.api-key.js";
import { applyAuthChoiceHuggingface } from "./auth-choice.apply.huggingface.js";
import type { ApplyAuthChoiceParams, ApplyAuthChoiceResult } from "./auth-choice.apply.js";
import { applyAuthChoiceOpenRouter } from "./auth-choice.apply.openrouter.js";
import { applyDefaultModelChoice } from "./auth-choice.default-model.js";
import {
  applyGoogleGeminiModelDefault,
  GOOGLE_GEMINI_DEFAULT_MODEL,
} from "./google-gemini-model-default.js";
import {
  applyAuthProfileConfig,
  applyCloudflareAiGatewayConfig,
  applyCloudflareAiGatewayProviderConfig,
  applyQianfanConfig,
  applyQianfanProviderConfig,
  applyKimiCodeConfig,
  applyKimiCodeProviderConfig,
  applyLitellmConfig,
  applyLitellmProviderConfig,
  applyMoonshotConfig,
  applyMoonshotConfigCn,
  applyMoonshotProviderConfig,
  applyMoonshotProviderConfigCn,
  applyOpencodeZenConfig,
  applyOpencodeZenProviderConfig,
  applySyntheticConfig,
  applySyntheticProviderConfig,
  applyTogetherConfig,
  applyTogetherProviderConfig,
  applyVeniceConfig,
  applyVeniceProviderConfig,
  applyVercelAiGatewayConfig,
  applyVercelAiGatewayProviderConfig,
  applyXiaomiConfig,
  applyXiaomiProviderConfig,
  applyZaiConfig,
  applyZaiProviderConfig,
  CLOUDFLARE_AI_GATEWAY_DEFAULT_MODEL_REF,
  LITELLM_DEFAULT_MODEL_REF,
  QIANFAN_DEFAULT_MODEL_REF,
  KIMI_CODING_MODEL_REF,
  MOONSHOT_DEFAULT_MODEL_REF,
  SYNTHETIC_DEFAULT_MODEL_REF,
  TOGETHER_DEFAULT_MODEL_REF,
  VENICE_DEFAULT_MODEL_REF,
  VERCEL_AI_GATEWAY_DEFAULT_MODEL_REF,
  XIAOMI_DEFAULT_MODEL_REF,
  setCloudflareAiGatewayConfig,
  setQianfanApiKey,
  setGeminiApiKey,
  setLitellmApiKey,
  setKimiCodingApiKey,
  setMoonshotApiKey,
  setOpencodeZenApiKey,
  setSyntheticApiKey,
  setTogetherApiKey,
  setVeniceApiKey,
  setVercelAiGatewayApiKey,
  setXiaomiApiKey,
  setZaiApiKey,
  ZAI_DEFAULT_MODEL_REF,
} from "./onboard-auth.js";
import { OPENCODE_ZEN_DEFAULT_MODEL } from "./opencode-zen-model-default.js";
import { detectZaiEndpoint } from "./zai-endpoint-detect.js";

export async function applyAuthChoiceApiProviders(
  params: ApplyAuthChoiceParams,
): Promise<ApplyAuthChoiceResult | null> {
  let nextConfig = params.config;
  let agentModelOverride: string | undefined;
  const noteAgentModel = async (model: string) => {
    if (!params.agentId) {
      return;
    }
    await params.prompter.note(
      `Default model set to ${model} for agent "${params.agentId}".`,
      "Model configured",
    );
  };

  let authChoice = params.authChoice;
  if (
    authChoice === "apiKey" &&
    params.opts?.tokenProvider &&
    params.opts.tokenProvider !== "anthropic" &&
    params.opts.tokenProvider !== "openai"
  ) {
    if (params.opts.tokenProvider === "openrouter") {
      authChoice = "openrouter-api-key";
    } else if (params.opts.tokenProvider === "litellm") {
      authChoice = "litellm-api-key";
    } else if (params.opts.tokenProvider === "vercel-ai-gateway") {
      authChoice = "ai-gateway-api-key";
    } else if (params.opts.tokenProvider === "cloudflare-ai-gateway") {
      authChoice = "cloudflare-ai-gateway-api-key";
    } else if (params.opts.tokenProvider === "moonshot") {
      authChoice = "moonshot-api-key";
    } else if (
      params.opts.tokenProvider === "kimi-code" ||
      params.opts.tokenProvider === "kimi-coding"
    ) {
      authChoice = "kimi-code-api-key";
    } else if (params.opts.tokenProvider === "google") {
      authChoice = "gemini-api-key";
    } else if (params.opts.tokenProvider === "zai") {
      authChoice = "zai-api-key";
    } else if (params.opts.tokenProvider === "xiaomi") {
      authChoice = "xiaomi-api-key";
    } else if (params.opts.tokenProvider === "synthetic") {
      authChoice = "synthetic-api-key";
    } else if (params.opts.tokenProvider === "venice") {
      authChoice = "venice-api-key";
    } else if (params.opts.tokenProvider === "together") {
      authChoice = "together-api-key";
    } else if (params.opts.tokenProvider === "huggingface") {
      authChoice = "huggingface-api-key";
    } else if (params.opts.tokenProvider === "opencode") {
      authChoice = "opencode-zen";
    } else if (params.opts.tokenProvider === "qianfan") {
      authChoice = "qianfan-api-key";
    }
  }

  async function ensureMoonshotApiKeyCredential(promptMessage: string): Promise<void> {
    let hasCredential = false;

    if (!hasCredential && params.opts?.token && params.opts?.tokenProvider === "moonshot") {
      await setMoonshotApiKey(normalizeApiKeyInput(params.opts.token), params.agentDir);
      hasCredential = true;
    }

    const envKey = resolveEnvApiKey("moonshot");
    if (envKey) {
      const useExisting = await params.prompter.confirm({
        message: `Use existing MOONSHOT_API_KEY (${envKey.source}, ${formatApiKeyPreview(envKey.apiKey)})?`,
        initialValue: true,
      });
      if (useExisting) {
        await setMoonshotApiKey(envKey.apiKey, params.agentDir);
        hasCredential = true;
      }
    }

    if (!hasCredential) {
      const key = await params.prompter.text({
        message: promptMessage,
        validate: validateApiKeyInput,
      });
      await setMoonshotApiKey(normalizeApiKeyInput(String(key ?? "")), params.agentDir);
    }
  }

  if (authChoice === "openrouter-api-key") {
    return applyAuthChoiceOpenRouter(params);
  }

  if (authChoice === "litellm-api-key") {
    const store = ensureAuthProfileStore(params.agentDir, { allowKeychainPrompt: false });
    const profileOrder = resolveAuthProfileOrder({ cfg: nextConfig, store, provider: "litellm" });
    const existingProfileId = profileOrder.find((profileId) => Boolean(store.profiles[profileId]));
    const existingCred = existingProfileId ? store.profiles[existingProfileId] : undefined;
    let profileId = "litellm:default";
    let hasCredential = false;

    if (existingProfileId && existingCred?.type === "api_key") {
      profileId = existingProfileId;
      hasCredential = true;
    }
    if (!hasCredential && params.opts?.token && params.opts?.tokenProvider === "litellm") {
      await setLitellmApiKey(normalizeApiKeyInput(params.opts.token), params.agentDir);
      hasCredential = true;
    }
    if (!hasCredential) {
      await params.prompter.note(
        "LiteLLM provides a unified API to 100+ LLM providers.\nGet your API key from your LiteLLM proxy or https://litellm.ai\nDefault proxy runs on http://localhost:4000",
        "LiteLLM",
      );
      const envKey = resolveEnvApiKey("litellm");
      if (envKey) {
        const useExisting = await params.prompter.confirm({
          message: `Use existing LITELLM_API_KEY (${envKey.source}, ${formatApiKeyPreview(envKey.apiKey)})?`,
          initialValue: true,
        });
        if (useExisting) {
          await setLitellmApiKey(envKey.apiKey, params.agentDir);
          hasCredential = true;
        }
      }
      if (!hasCredential) {
        const key = await params.prompter.text({
          message: "Enter LiteLLM API key",
          validate: validateApiKeyInput,
        });
        await setLitellmApiKey(normalizeApiKeyInput(String(key ?? "")), params.agentDir);
        hasCredential = true;
      }
    }
    if (hasCredential) {
      nextConfig = applyAuthProfileConfig(nextConfig, {
        profileId,
        provider: "litellm",
        mode: "api_key",
      });
    }
    const applied = await applyDefaultModelChoice({
      config: nextConfig,
      setDefaultModel: params.setDefaultModel,
      defaultModel: LITELLM_DEFAULT_MODEL_REF,
      applyDefaultConfig: applyLitellmConfig,
      applyProviderConfig: applyLitellmProviderConfig,
      noteDefault: LITELLM_DEFAULT_MODEL_REF,
      noteAgentModel,
      prompter: params.prompter,
    });
    nextConfig = applied.config;
    agentModelOverride = applied.agentModelOverride ?? agentModelOverride;
    return { config: nextConfig, agentModelOverride };
  }

  if (authChoice === "ai-gateway-api-key") {
    let hasCredential = false;

    if (
      !hasCredential &&
      params.opts?.token &&
      params.opts?.tokenProvider === "vercel-ai-gateway"
    ) {
      await setVercelAiGatewayApiKey(normalizeApiKeyInput(params.opts.token), params.agentDir);
      hasCredential = true;
    }

    const envKey = resolveEnvApiKey("vercel-ai-gateway");
    if (envKey) {
      const useExisting = await params.prompter.confirm({
        message: `Use existing AI_GATEWAY_API_KEY (${envKey.source}, ${formatApiKeyPreview(envKey.apiKey)})?`,
        initialValue: true,
      });
      if (useExisting) {
        await setVercelAiGatewayApiKey(envKey.apiKey, params.agentDir);
        hasCredential = true;
      }
    }
    if (!hasCredential) {
      const key = await params.prompter.text({
        message: "Enter Vercel AI Gateway API key",
        validate: validateApiKeyInput,
      });
      await setVercelAiGatewayApiKey(normalizeApiKeyInput(String(key ?? "")), params.agentDir);
    }
    nextConfig = applyAuthProfileConfig(nextConfig, {
      profileId: "vercel-ai-gateway:default",
      provider: "vercel-ai-gateway",
      mode: "api_key",
    });
    {
      const applied = await applyDefaultModelChoice({
        config: nextConfig,
        setDefaultModel: params.setDefaultModel,
        defaultModel: VERCEL_AI_GATEWAY_DEFAULT_MODEL_REF,
        applyDefaultConfig: applyVercelAiGatewayConfig,
        applyProviderConfig: applyVercelAiGatewayProviderConfig,
        noteDefault: VERCEL_AI_GATEWAY_DEFAULT_MODEL_REF,
        noteAgentModel,
        prompter: params.prompter,
      });
      nextConfig = applied.config;
      agentModelOverride = applied.agentModelOverride ?? agentModelOverride;
    }
    return { config: nextConfig, agentModelOverride };
  }

  if (authChoice === "cloudflare-ai-gateway-api-key") {
    let hasCredential = false;
    let accountId = params.opts?.cloudflareAiGatewayAccountId?.trim() ?? "";
    let gatewayId = params.opts?.cloudflareAiGatewayGatewayId?.trim() ?? "";

    const ensureAccountGateway = async () => {
      if (!accountId) {
        const value = await params.prompter.text({
          message: "Enter Cloudflare Account ID",
          validate: (val) => (String(val ?? "").trim() ? undefined : "Account ID is required"),
        });
        accountId = String(value ?? "").trim();
      }
      if (!gatewayId) {
        const value = await params.prompter.text({
          message: "Enter Cloudflare AI Gateway ID",
          validate: (val) => (String(val ?? "").trim() ? undefined : "Gateway ID is required"),
        });
        gatewayId = String(value ?? "").trim();
      }
    };

    const optsApiKey = normalizeApiKeyInput(params.opts?.cloudflareAiGatewayApiKey ?? "");
    if (!hasCredential && accountId && gatewayId && optsApiKey) {
      await setCloudflareAiGatewayConfig(accountId, gatewayId, optsApiKey, params.agentDir);
      hasCredential = true;
    }

    const envKey = resolveEnvApiKey("cloudflare-ai-gateway");
    if (!hasCredential && envKey) {
      const useExisting = await params.prompter.confirm({
        message: `Use existing CLOUDFLARE_AI_GATEWAY_API_KEY (${envKey.source}, ${formatApiKeyPreview(envKey.apiKey)})?`,
        initialValue: true,
      });
      if (useExisting) {
        await ensureAccountGateway();
        await setCloudflareAiGatewayConfig(
          accountId,
          gatewayId,
          normalizeApiKeyInput(envKey.apiKey),
          params.agentDir,
        );
        hasCredential = true;
      }
    }

    if (!hasCredential && optsApiKey) {
      await ensureAccountGateway();
      await setCloudflareAiGatewayConfig(accountId, gatewayId, optsApiKey, params.agentDir);
      hasCredential = true;
    }

    if (!hasCredential) {
      await ensureAccountGateway();
      const key = await params.prompter.text({
        message: "Enter Cloudflare AI Gateway API key",
        validate: validateApiKeyInput,
      });
      await setCloudflareAiGatewayConfig(
        accountId,
        gatewayId,
        normalizeApiKeyInput(String(key ?? "")),
        params.agentDir,
      );
      hasCredential = true;
    }

    if (hasCredential) {
      nextConfig = applyAuthProfileConfig(nextConfig, {
        profileId: "cloudflare-ai-gateway:default",
        provider: "cloudflare-ai-gateway",
        mode: "api_key",
      });
    }
    {
      const applied = await applyDefaultModelChoice({
        config: nextConfig,
        setDefaultModel: params.setDefaultModel,
        defaultModel: CLOUDFLARE_AI_GATEWAY_DEFAULT_MODEL_REF,
        applyDefaultConfig: (cfg) =>
          applyCloudflareAiGatewayConfig(cfg, {
            accountId: accountId || params.opts?.cloudflareAiGatewayAccountId,
            gatewayId: gatewayId || params.opts?.cloudflareAiGatewayGatewayId,
          }),
        applyProviderConfig: (cfg) =>
          applyCloudflareAiGatewayProviderConfig(cfg, {
            accountId: accountId || params.opts?.cloudflareAiGatewayAccountId,
            gatewayId: gatewayId || params.opts?.cloudflareAiGatewayGatewayId,
          }),
        noteDefault: CLOUDFLARE_AI_GATEWAY_DEFAULT_MODEL_REF,
        noteAgentModel,
        prompter: params.prompter,
      });
      nextConfig = applied.config;
      agentModelOverride = applied.agentModelOverride ?? agentModelOverride;
    }
    return { config: nextConfig, agentModelOverride };
  }

  if (authChoice === "moonshot-api-key") {
    await ensureMoonshotApiKeyCredential("Enter Moonshot API key");
    nextConfig = applyAuthProfileConfig(nextConfig, {
      profileId: "moonshot:default",
      provider: "moonshot",
      mode: "api_key",
    });
    {
      const applied = await applyDefaultModelChoice({
        config: nextConfig,
        setDefaultModel: params.setDefaultModel,
        defaultModel: MOONSHOT_DEFAULT_MODEL_REF,
        applyDefaultConfig: applyMoonshotConfig,
        applyProviderConfig: applyMoonshotProviderConfig,
        noteAgentModel,
        prompter: params.prompter,
      });
      nextConfig = applied.config;
      agentModelOverride = applied.agentModelOverride ?? agentModelOverride;
    }
    return { config: nextConfig, agentModelOverride };
  }

  if (authChoice === "moonshot-api-key-cn") {
    await ensureMoonshotApiKeyCredential("Enter Moonshot API key (.cn)");
    nextConfig = applyAuthProfileConfig(nextConfig, {
      profileId: "moonshot:default",
      provider: "moonshot",
      mode: "api_key",
    });
    {
      const applied = await applyDefaultModelChoice({
        config: nextConfig,
        setDefaultModel: params.setDefaultModel,
        defaultModel: MOONSHOT_DEFAULT_MODEL_REF,
        applyDefaultConfig: applyMoonshotConfigCn,
        applyProviderConfig: applyMoonshotProviderConfigCn,
        noteAgentModel,
        prompter: params.prompter,
      });
      nextConfig = applied.config;
      agentModelOverride = applied.agentModelOverride ?? agentModelOverride;
    }
    return { config: nextConfig, agentModelOverride };
  }

  if (authChoice === "kimi-code-api-key") {
    let hasCredential = false;
    const tokenProvider = params.opts?.tokenProvider?.trim().toLowerCase();
    if (
      !hasCredential &&
      params.opts?.token &&
      (tokenProvider === "kimi-code" || tokenProvider === "kimi-coding")
    ) {
      await setKimiCodingApiKey(normalizeApiKeyInput(params.opts.token), params.agentDir);
      hasCredential = true;
    }

    if (!hasCredential) {
      await params.prompter.note(
        [
          "Kimi Coding uses a dedicated endpoint and API key.",
          "Get your API key at: https://www.kimi.com/code/en",
        ].join("\n"),
        "Kimi Coding",
      );
    }
    const envKey = resolveEnvApiKey("kimi-coding");
    if (envKey) {
      const useExisting = await params.prompter.confirm({
        message: `Use existing KIMI_API_KEY (${envKey.source}, ${formatApiKeyPreview(envKey.apiKey)})?`,
        initialValue: true,
      });
      if (useExisting) {
        await setKimiCodingApiKey(envKey.apiKey, params.agentDir);
        hasCredential = true;
      }
    }
    if (!hasCredential) {
      const key = await params.prompter.text({
        message: "Enter Kimi Coding API key",
        validate: validateApiKeyInput,
      });
      await setKimiCodingApiKey(normalizeApiKeyInput(String(key ?? "")), params.agentDir);
    }
    nextConfig = applyAuthProfileConfig(nextConfig, {
      profileId: "kimi-coding:default",
      provider: "kimi-coding",
      mode: "api_key",
    });
    {
      const applied = await applyDefaultModelChoice({
        config: nextConfig,
        setDefaultModel: params.setDefaultModel,
        defaultModel: KIMI_CODING_MODEL_REF,
        applyDefaultConfig: applyKimiCodeConfig,
        applyProviderConfig: applyKimiCodeProviderConfig,
        noteDefault: KIMI_CODING_MODEL_REF,
        noteAgentModel,
        prompter: params.prompter,
      });
      nextConfig = applied.config;
      agentModelOverride = applied.agentModelOverride ?? agentModelOverride;
    }
    return { config: nextConfig, agentModelOverride };
  }

  if (authChoice === "gemini-api-key") {
    let hasCredential = false;

    if (!hasCredential && params.opts?.token && params.opts?.tokenProvider === "google") {
      await setGeminiApiKey(normalizeApiKeyInput(params.opts.token), params.agentDir);
      hasCredential = true;
    }

    const envKey = resolveEnvApiKey("google");
    if (envKey) {
      const useExisting = await params.prompter.confirm({
        message: `Use existing GEMINI_API_KEY (${envKey.source}, ${formatApiKeyPreview(envKey.apiKey)})?`,
        initialValue: true,
      });
      if (useExisting) {
        await setGeminiApiKey(envKey.apiKey, params.agentDir);
        hasCredential = true;
      }
    }
    if (!hasCredential) {
      const key = await params.prompter.text({
        message: "Enter Gemini API key",
        validate: validateApiKeyInput,
      });
      await setGeminiApiKey(normalizeApiKeyInput(String(key ?? "")), params.agentDir);
    }
    nextConfig = applyAuthProfileConfig(nextConfig, {
      profileId: "google:default",
      provider: "google",
      mode: "api_key",
    });
    if (params.setDefaultModel) {
      const applied = applyGoogleGeminiModelDefault(nextConfig);
      nextConfig = applied.next;
      if (applied.changed) {
        await params.prompter.note(
          `Default model set to ${GOOGLE_GEMINI_DEFAULT_MODEL}`,
          "Model configured",
        );
      }
    } else {
      agentModelOverride = GOOGLE_GEMINI_DEFAULT_MODEL;
      await noteAgentModel(GOOGLE_GEMINI_DEFAULT_MODEL);
    }
    return { config: nextConfig, agentModelOverride };
  }

  if (
    authChoice === "zai-api-key" ||
    authChoice === "zai-coding-global" ||
    authChoice === "zai-coding-cn" ||
    authChoice === "zai-global" ||
    authChoice === "zai-cn"
  ) {
    let endpoint: "global" | "cn" | "coding-global" | "coding-cn" | undefined;
    if (authChoice === "zai-coding-global") {
      endpoint = "coding-global";
    } else if (authChoice === "zai-coding-cn") {
      endpoint = "coding-cn";
    } else if (authChoice === "zai-global") {
      endpoint = "global";
    } else if (authChoice === "zai-cn") {
      endpoint = "cn";
    }

    // Input API key
    let hasCredential = false;
    let apiKey = "";

    if (!hasCredential && params.opts?.token && params.opts?.tokenProvider === "zai") {
      apiKey = normalizeApiKeyInput(params.opts.token);
      await setZaiApiKey(apiKey, params.agentDir);
      hasCredential = true;
    }

    const envKey = resolveEnvApiKey("zai");
    if (envKey) {
      const useExisting = await params.prompter.confirm({
        message: `Use existing ZAI_API_KEY (${envKey.source}, ${formatApiKeyPreview(envKey.apiKey)})?`,
        initialValue: true,
      });
      if (useExisting) {
        apiKey = envKey.apiKey;
        await setZaiApiKey(apiKey, params.agentDir);
        hasCredential = true;
      }
    }
    if (!hasCredential) {
      const key = await params.prompter.text({
        message: "Enter Z.AI API key",
        validate: validateApiKeyInput,
      });
      apiKey = normalizeApiKeyInput(String(key ?? ""));
      await setZaiApiKey(apiKey, params.agentDir);
    }

    // zai-api-key: auto-detect endpoint + choose a working default model.
    let modelIdOverride: string | undefined;
    if (!endpoint) {
      const detected = await detectZaiEndpoint({ apiKey });
      if (detected) {
        endpoint = detected.endpoint;
        modelIdOverride = detected.modelId;
        await params.prompter.note(detected.note, "Z.AI endpoint");
      } else {
        endpoint = await params.prompter.select({
          message: "Select Z.AI endpoint",
          options: [
            {
              value: "coding-global",
              label: "Coding-Plan-Global",
              hint: "GLM Coding Plan Global (api.z.ai)",
            },
            {
              value: "coding-cn",
              label: "Coding-Plan-CN",
              hint: "GLM Coding Plan CN (open.bigmodel.cn)",
            },
            {
              value: "global",
              label: "Global",
              hint: "Z.AI Global (api.z.ai)",
            },
            {
              value: "cn",
              label: "CN",
              hint: "Z.AI CN (open.bigmodel.cn)",
            },
          ],
          initialValue: "global",
        });
      }
    }

    nextConfig = applyAuthProfileConfig(nextConfig, {
      profileId: "zai:default",
      provider: "zai",
      mode: "api_key",
    });

    const defaultModel = modelIdOverride ? `zai/${modelIdOverride}` : ZAI_DEFAULT_MODEL_REF;
    const applied = await applyDefaultModelChoice({
      config: nextConfig,
      setDefaultModel: params.setDefaultModel,
      defaultModel,
      applyDefaultConfig: (config) =>
        applyZaiConfig(config, {
          endpoint,
          ...(modelIdOverride ? { modelId: modelIdOverride } : {}),
        }),
      applyProviderConfig: (config) =>
        applyZaiProviderConfig(config, {
          endpoint,
          ...(modelIdOverride ? { modelId: modelIdOverride } : {}),
        }),
      noteDefault: defaultModel,
      noteAgentModel,
      prompter: params.prompter,
    });
    nextConfig = applied.config;
    agentModelOverride = applied.agentModelOverride ?? agentModelOverride;

    return { config: nextConfig, agentModelOverride };
  }

  if (authChoice === "xiaomi-api-key") {
    let hasCredential = false;

    if (!hasCredential && params.opts?.token && params.opts?.tokenProvider === "xiaomi") {
      await setXiaomiApiKey(normalizeApiKeyInput(params.opts.token), params.agentDir);
      hasCredential = true;
    }

    const envKey = resolveEnvApiKey("xiaomi");
    if (envKey) {
      const useExisting = await params.prompter.confirm({
        message: `Use existing XIAOMI_API_KEY (${envKey.source}, ${formatApiKeyPreview(envKey.apiKey)})?`,
        initialValue: true,
      });
      if (useExisting) {
        await setXiaomiApiKey(envKey.apiKey, params.agentDir);
        hasCredential = true;
      }
    }
    if (!hasCredential) {
      const key = await params.prompter.text({
        message: "Enter Xiaomi API key",
        validate: validateApiKeyInput,
      });
      await setXiaomiApiKey(normalizeApiKeyInput(String(key ?? "")), params.agentDir);
    }
    nextConfig = applyAuthProfileConfig(nextConfig, {
      profileId: "xiaomi:default",
      provider: "xiaomi",
      mode: "api_key",
    });
    {
      const applied = await applyDefaultModelChoice({
        config: nextConfig,
        setDefaultModel: params.setDefaultModel,
        defaultModel: XIAOMI_DEFAULT_MODEL_REF,
        applyDefaultConfig: applyXiaomiConfig,
        applyProviderConfig: applyXiaomiProviderConfig,
        noteDefault: XIAOMI_DEFAULT_MODEL_REF,
        noteAgentModel,
        prompter: params.prompter,
      });
      nextConfig = applied.config;
      agentModelOverride = applied.agentModelOverride ?? agentModelOverride;
    }
    return { config: nextConfig, agentModelOverride };
  }

  if (authChoice === "synthetic-api-key") {
    if (params.opts?.token && params.opts?.tokenProvider === "synthetic") {
      await setSyntheticApiKey(String(params.opts.token ?? "").trim(), params.agentDir);
    } else {
      const key = await params.prompter.text({
        message: "Enter Synthetic API key",
        validate: (value) => (value?.trim() ? undefined : "Required"),
      });
      await setSyntheticApiKey(String(key ?? "").trim(), params.agentDir);
    }
    nextConfig = applyAuthProfileConfig(nextConfig, {
      profileId: "synthetic:default",
      provider: "synthetic",
      mode: "api_key",
    });
    {
      const applied = await applyDefaultModelChoice({
        config: nextConfig,
        setDefaultModel: params.setDefaultModel,
        defaultModel: SYNTHETIC_DEFAULT_MODEL_REF,
        applyDefaultConfig: applySyntheticConfig,
        applyProviderConfig: applySyntheticProviderConfig,
        noteDefault: SYNTHETIC_DEFAULT_MODEL_REF,
        noteAgentModel,
        prompter: params.prompter,
      });
      nextConfig = applied.config;
      agentModelOverride = applied.agentModelOverride ?? agentModelOverride;
    }
    return { config: nextConfig, agentModelOverride };
  }

  if (authChoice === "venice-api-key") {
    let hasCredential = false;

    if (!hasCredential && params.opts?.token && params.opts?.tokenProvider === "venice") {
      await setVeniceApiKey(normalizeApiKeyInput(params.opts.token), params.agentDir);
      hasCredential = true;
    }

    if (!hasCredential) {
      await params.prompter.note(
        [
          "Venice AI provides privacy-focused inference with uncensored models.",
          "Get your API key at: https://venice.ai/settings/api",
          "Supports 'private' (fully private) and 'anonymized' (proxy) modes.",
        ].join("\n"),
        "Venice AI",
      );
    }

    const envKey = resolveEnvApiKey("venice");
    if (envKey) {
      const useExisting = await params.prompter.confirm({
        message: `Use existing VENICE_API_KEY (${envKey.source}, ${formatApiKeyPreview(envKey.apiKey)})?`,
        initialValue: true,
      });
      if (useExisting) {
        await setVeniceApiKey(envKey.apiKey, params.agentDir);
        hasCredential = true;
      }
    }
    if (!hasCredential) {
      const key = await params.prompter.text({
        message: "Enter Venice AI API key",
        validate: validateApiKeyInput,
      });
      await setVeniceApiKey(normalizeApiKeyInput(String(key ?? "")), params.agentDir);
    }
    nextConfig = applyAuthProfileConfig(nextConfig, {
      profileId: "venice:default",
      provider: "venice",
      mode: "api_key",
    });
    {
      const applied = await applyDefaultModelChoice({
        config: nextConfig,
        setDefaultModel: params.setDefaultModel,
        defaultModel: VENICE_DEFAULT_MODEL_REF,
        applyDefaultConfig: applyVeniceConfig,
        applyProviderConfig: applyVeniceProviderConfig,
        noteDefault: VENICE_DEFAULT_MODEL_REF,
        noteAgentModel,
        prompter: params.prompter,
      });
      nextConfig = applied.config;
      agentModelOverride = applied.agentModelOverride ?? agentModelOverride;
    }
    return { config: nextConfig, agentModelOverride };
  }

  if (authChoice === "opencode-zen") {
    let hasCredential = false;
    if (!hasCredential && params.opts?.token && params.opts?.tokenProvider === "opencode") {
      await setOpencodeZenApiKey(normalizeApiKeyInput(params.opts.token), params.agentDir);
      hasCredential = true;
    }

    if (!hasCredential) {
      await params.prompter.note(
        [
          "OpenCode Zen provides access to Claude, GPT, Gemini, and more models.",
          "Get your API key at: https://opencode.ai/auth",
          "OpenCode Zen bills per request. Check your OpenCode dashboard for details.",
        ].join("\n"),
        "OpenCode Zen",
      );
    }
    const envKey = resolveEnvApiKey("opencode");
    if (envKey) {
      const useExisting = await params.prompter.confirm({
        message: `Use existing OPENCODE_API_KEY (${envKey.source}, ${formatApiKeyPreview(envKey.apiKey)})?`,
        initialValue: true,
      });
      if (useExisting) {
        await setOpencodeZenApiKey(envKey.apiKey, params.agentDir);
        hasCredential = true;
      }
    }
    if (!hasCredential) {
      const key = await params.prompter.text({
        message: "Enter OpenCode Zen API key",
        validate: validateApiKeyInput,
      });
      await setOpencodeZenApiKey(normalizeApiKeyInput(String(key ?? "")), params.agentDir);
    }
    nextConfig = applyAuthProfileConfig(nextConfig, {
      profileId: "opencode:default",
      provider: "opencode",
      mode: "api_key",
    });
    {
      const applied = await applyDefaultModelChoice({
        config: nextConfig,
        setDefaultModel: params.setDefaultModel,
        defaultModel: OPENCODE_ZEN_DEFAULT_MODEL,
        applyDefaultConfig: applyOpencodeZenConfig,
        applyProviderConfig: applyOpencodeZenProviderConfig,
        noteDefault: OPENCODE_ZEN_DEFAULT_MODEL,
        noteAgentModel,
        prompter: params.prompter,
      });
      nextConfig = applied.config;
      agentModelOverride = applied.agentModelOverride ?? agentModelOverride;
    }
    return { config: nextConfig, agentModelOverride };
  }

  if (authChoice === "together-api-key") {
    let hasCredential = false;

    if (!hasCredential && params.opts?.token && params.opts?.tokenProvider === "together") {
      await setTogetherApiKey(normalizeApiKeyInput(params.opts.token), params.agentDir);
      hasCredential = true;
    }

    if (!hasCredential) {
      await params.prompter.note(
        [
          "Together AI provides access to leading open-source models including Llama, DeepSeek, Qwen, and more.",
          "Get your API key at: https://api.together.xyz/settings/api-keys",
        ].join("\n"),
        "Together AI",
      );
    }

    const envKey = resolveEnvApiKey("together");
    if (envKey) {
      const useExisting = await params.prompter.confirm({
        message: `Use existing TOGETHER_API_KEY (${envKey.source}, ${formatApiKeyPreview(envKey.apiKey)})?`,
        initialValue: true,
      });
      if (useExisting) {
        await setTogetherApiKey(envKey.apiKey, params.agentDir);
        hasCredential = true;
      }
    }
    if (!hasCredential) {
      const key = await params.prompter.text({
        message: "Enter Together AI API key",
        validate: validateApiKeyInput,
      });
      await setTogetherApiKey(normalizeApiKeyInput(String(key ?? "")), params.agentDir);
    }
    nextConfig = applyAuthProfileConfig(nextConfig, {
      profileId: "together:default",
      provider: "together",
      mode: "api_key",
    });
    {
      const applied = await applyDefaultModelChoice({
        config: nextConfig,
        setDefaultModel: params.setDefaultModel,
        defaultModel: TOGETHER_DEFAULT_MODEL_REF,
        applyDefaultConfig: applyTogetherConfig,
        applyProviderConfig: applyTogetherProviderConfig,
        noteDefault: TOGETHER_DEFAULT_MODEL_REF,
        noteAgentModel,
        prompter: params.prompter,
      });
      nextConfig = applied.config;
      agentModelOverride = applied.agentModelOverride ?? agentModelOverride;
    }
    return { config: nextConfig, agentModelOverride };
  }

  if (authChoice === "huggingface-api-key") {
    return applyAuthChoiceHuggingface({ ...params, authChoice });
  }

  if (authChoice === "qianfan-api-key") {
    let hasCredential = false;
    if (!hasCredential && params.opts?.token && params.opts?.tokenProvider === "qianfan") {
      setQianfanApiKey(normalizeApiKeyInput(params.opts.token), params.agentDir);
      hasCredential = true;
    }

    if (!hasCredential) {
      await params.prompter.note(
        [
          "Get your API key at: https://console.bce.baidu.com/qianfan/ais/console/apiKey",
          "API key format: bce-v3/ALTAK-...",
        ].join("\n"),
        "QIANFAN",
      );
    }
    const envKey = resolveEnvApiKey("qianfan");
    if (envKey) {
      const useExisting = await params.prompter.confirm({
        message: `Use existing QIANFAN_API_KEY (${envKey.source}, ${formatApiKeyPreview(envKey.apiKey)})?`,
        initialValue: true,
      });
      if (useExisting) {
        setQianfanApiKey(envKey.apiKey, params.agentDir);
        hasCredential = true;
      }
    }
    if (!hasCredential) {
      const key = await params.prompter.text({
        message: "Enter QIANFAN API key",
        validate: validateApiKeyInput,
      });
      setQianfanApiKey(normalizeApiKeyInput(String(key ?? "")), params.agentDir);
    }
    nextConfig = applyAuthProfileConfig(nextConfig, {
      profileId: "qianfan:default",
      provider: "qianfan",
      mode: "api_key",
    });
    {
      const applied = await applyDefaultModelChoice({
        config: nextConfig,
        setDefaultModel: params.setDefaultModel,
        defaultModel: QIANFAN_DEFAULT_MODEL_REF,
        applyDefaultConfig: applyQianfanConfig,
        applyProviderConfig: applyQianfanProviderConfig,
        noteDefault: QIANFAN_DEFAULT_MODEL_REF,
        noteAgentModel,
        prompter: params.prompter,
      });
      nextConfig = applied.config;
      agentModelOverride = applied.agentModelOverride ?? agentModelOverride;
    }
    return { config: nextConfig, agentModelOverride };
  }

  return null;
}