import {z} from 'zod'

export type PollOptionCreate = {text: string};

export type PollQuestionCreate = {text: string, options: Array<PollOptionCreate>};

export type PollCreateRequest = {title: string, description?: (string | null) | undefined, reward_enabled?: boolean | undefined, reward_amount_kopeks?: number | undefined, questions: Array<PollQuestionCreate>};

export type CreateApiPollsArgs = {body: PollCreateRequest};

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

export const pollQuestionOptionResponse = z.object({id: z.number().int(), text: z.string(), order: z.number().int()});

export const appWebapiSchemasPollsPollQuestionResponse = z.object({id: z.number().int(), text: z.string(), order: z.number().int(), options: z.array(pollQuestionOptionResponse)});

export const pollDetailResponse = z.object({id: z.number().int(), title: z.string(), description: z.string().nullable(), reward_enabled: z.boolean(), reward_amount_kopeks: z.number().int(), reward_amount_rubles: z.number(), questions: z.array(appWebapiSchemasPollsPollQuestionResponse), created_at: z.string(), updated_at: z.string()});

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
};

/**
 * Create Poll Endpoint
 * 
 * POST /polls
 */
export const createApiPolls = async (args: CreateApiPollsArgs, options: CreateApiPollsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, APIKeyHeader} = options ?? {}

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

if (APIKeyHeader !== undefined) headers.set("X-API-Key", APIKeyHeader)

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