import {z} from 'zod'

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

export const questionAnswer = z.object({id: z.number().int().optional(), selected: z.boolean().optional(), answer: z.string().optional()});

export const validationError = z.object({field: z.string().optional(), message: z.string().optional()});

export const boardingTag = z.object({group: z.string().optional(), name: z.string().optional(), value: z.string().optional()});

export const questionAnswerSet: z.ZodType<QuestionAnswerSet> = z.object({required: z.boolean().optional(), type: z.string().optional(), answers: z.array(questionAnswer).optional(), children: z.array(z.lazy(() => questionAnswerSet)).optional(), sendToMerchantApp: z.boolean().optional(), errors: z.array(validationError).optional(), isHidden: z.boolean().optional(), selectedAnswer: z.number().int().optional(), valid: z.boolean().optional(), question: z.string().optional(), conditionalOnAnswer: z.number().int().optional(), tags: z.array(boardingTag).optional()});

export const questionAnswerGroup = z.object({questionAnswerSets: z.record(z.string(), z.array(questionAnswerSet)).optional(), questionAreas: z.array(z.string()).optional()});

export const metadata = z.object({exchangeId: z.unknown(), timestamp: z.unknown()});

export const survey = z.object({questionAnswerGroup: questionAnswerGroup.optional(), metadata: metadata.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
};

/**
 * Get equipment configuration survey
 * 
 * GET /api/equipment/surveys/**
 */
export const getApiApiEquipmentSurveys = async (options: GetApiApiEquipmentSurveysOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/api/equipment/surveys/**${query.size > 0 ? `?${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(survey, await res.json())
};