import {z} from 'zod'

export type Credential = {key: string, value?: string | undefined, secret?: boolean | undefined};

export type ProviderAuthConfig = {token_url?: string | undefined, send_as?: ('form' | 'json' | 'basic') | undefined, credentials?: Array<Credential> | undefined, token_field?: string | undefined, expires_field?: string | undefined, fallback_ttl_seconds?: number | undefined};

export type ProviderAuthCheck = {provider_id?: string | undefined, auth_config?: ProviderAuthConfig | undefined};

export type CreateApiV1PrivateLlmProviderKeyAuthConfigTestArgs = {body: ProviderAuthCheck};

export type CreateApiV1PrivateLlmProviderKeyAuthConfigTestOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const result = z.object({name: z.string().optional(), current: z.number().optional(), previous: z.number().optional()});

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
};

/**
 * Test a provider's dynamic token auth
 * 
 * POST /v1/private/llm-provider-key/auth-config/test
 */
export const createApiV1PrivateLlmProviderKeyAuthConfigTest = async (args: CreateApiV1PrivateLlmProviderKeyAuthConfigTestArgs, options?: CreateApiV1PrivateLlmProviderKeyAuthConfigTestOptions) => {
const {baseUrl = "http://localhost:5173/api", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/private/llm-provider-key/auth-config/test${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

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

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