import {z} from 'zod'

export type GetApiVendorQuestionnaireAnswersArgs = {id: number};

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

export const fileUploadAnswer = z.object({filename: z.string().optional()});

export const multipleChoiceAnswer = z.object({selected_options: z.array(z.string()).optional()});

export const choiceOption = z.object({checked: z.boolean().optional(), id: z.string().optional(), selected: z.boolean().optional(), text: z.string().optional()});

export const riskAnswer = z.object({compensating_control: z.string().optional(), severity: z.enum(["info", "low", "medium", "high", "critical"]).optional()});

export const singleChoiceAnswer = z.object({comment: z.string().optional(), selected_option_id: z.string().optional(), selected_option_text: z.string().optional()});

export const textAnswer = z.object({value: z.string().optional()});

export const question = z.object({answered: z.boolean().optional(), file_upload_answer: fileUploadAnswer.optional(), multiple_choice_answer: multipleChoiceAnswer.optional(), options: z.array(choiceOption).optional(), question_id: z.string().optional(), question_number: z.string().optional(), question_text: z.string().optional(), question_type: z.enum(["text", "single_choice", "multiple_choice", "file_upload", "risk"]).optional(), required: z.boolean().optional(), risk_answer: riskAnswer.optional(), single_choice_answer: singleChoiceAnswer.optional(), text_answer: textAnswer.optional()});

export const getQuestionnaireAnswersResponsePayload = z.object({questions: z.array(question).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 questionnaire questions and answers
 * 
 * GET /vendor/questionnaire/answers
 */
export const getApiVendorQuestionnaireAnswers = async (args: GetApiVendorQuestionnaireAnswersArgs, options?: GetApiVendorQuestionnaireAnswersOptions) => {
const {baseUrl = "https://cyber-risk.upguard.com/api/public", fetch: fetchFn = fetch, APIKeyInHeader} = options ?? {}

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

if (args.id != null) query.append("id", String(args.id))
if (APIKeyInHeader !== undefined) headers.set("Authorization", APIKeyInHeader)

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