import {z} from 'zod'

export type GetApiV1ChatDeepnewsModelsOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const deepNewsModel = z.enum(["o1-mini", "o1", "o3-mini", "o3", "gpt-4o-mini", "gpt-4o", "gpt-4.1-2025-04-14", "gpt-5-mini", "gpt-5", "command-nightly", "claude-3-5-sonnet-20240620", "claude-3-5-sonnet-latest", "claude-3-7-sonnet-latest", "claude-3-7-sonnet-20250219", "claude-3-7-sonnet-nothinking", "claude-sonnet-4-20250514", "claude-opus-4-20250514", "claude-sonnet-4-5-20250929", "claude-opus-4-5-20251101", "claude-sonnet-4-6", "claude-sonnet-5", "claude-sonnet-5-5", "claude-opus-4-8", "claude-opus-5", "claude-opus-5-5", "claude-opus-4-6", "claude-fable-5", "claude-fable-5-1", "gpt-5.6-terra", "gpt-5.6-sol", "gpt-6-sol", "gpt-6.1-sol", "gpt-6-astra", "deepseek", "deepseek-basic", "deepseek-r1-0528", "meta-llama/Meta-Llama-3-8B-Instruct", "meta-llama/Meta-Llama-3.1-405B-Instruct", "meta-llama/Meta-Llama-3.3-70B-Instruct", "meta-llama/Llama-4-Maverick-17B-128E-Instruct", "gemini-2.5-flash", "gemini-2.5-pro", "gemini-2.5-pro-preview-03-25", "gemini-3-pro", "gemini-3.1-pro", "gemini-4-argon", "gemini-3-flash", "gemini-3.5-flash", "gemini-3.6-flash", "open-source-best", "kimi-k2p5", "kimi-k3"]);

export const deepNewsModelItem = z.object({model: deepNewsModel, type: z.enum(["standard", "lite", "advanced"])});

export const listDeepNewsModelResponse = z.object({models: z.array(deepNewsModelItem)});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * List available DeepNews models
 * 
 * GET /v1/chat/deepnews-models
 */
export const getApiV1ChatDeepnewsModels = async (options?: GetApiV1ChatDeepnewsModelsOptions) => {
const {baseUrl = "https://api.asknews.app", fetch: fetchFn = fetch} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

const url = `${baseUrl.replace(/\/+$/, '')}/v1/chat/deepnews-models${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(listDeepNewsModelResponse, await res.json())
};