import {z} from 'zod'

export type GetApiV1ModelsBaseOptions = {baseUrl: string, HTTPBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const modelData: z.ZodType<ModelData> = z.object({supports_functions: z.boolean(), supports_json: z.boolean(), supports_n: z.boolean(), supports_penalties: z.boolean(), supports_stream: z.boolean(), supports_vision: z.boolean(), completion_token_cost: z.number(), prompt_token_cost: z.number(), base_cost: z.number(), price_unit: z.enum(["tokens", "characters"]), model: z.string(), provider: z.string().nullable().optional(), owner: z.string().nullable().optional(), namespace: z.string(), at: z.string().nullable().optional(), context_window: z.number().int(), until: z.string().nullable(), description: z.string(), url: z.string(), api_target: z.string().optional(), deprecated_on: z.string().nullable().optional(), parent_id: z.string().nullable().optional(), parent: z.lazy(() => modelData.nullable().optional()), prompt_id: z.string().nullable().optional(), is_rag: z.boolean(), is_ft: z.boolean(), is_open_source: z.boolean(), is_gdpr: z.boolean(), is_chat: z.boolean(), id: z.string().nullable(), app_id: z.string().nullable(), org_id: z.string().nullable(), added_by: z.string().nullable(), added_on: z.string().nullable(), modified_on: z.string().nullable(), is_public: z.boolean(), is_test_model: z.boolean(), is_pulze_owner: z.boolean(), default_active: z.boolean()});

export const getApiV1ModelsBaseResponse = z.array(modelData);

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
};

/**
 * Get Base Models
 * 
 * GET /v1/models/base
 */
export const getApiV1ModelsBase = async (options: GetApiV1ModelsBaseOptions) => {
const {baseUrl, fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

if (HTTPBearer !== undefined) headers.set('authorization', `Bearer ${HTTPBearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/models/base${query.size > 0 ? `?${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(getApiV1ModelsBaseResponse, await res.json())
};