import {z} from 'zod'

export type ExamineCustomerIdentification = {type: 'customer_id' | 'customer_source_id' | 'member_id', customer_id: unknown, customer_source_id: unknown, member_id: unknown};

export type EarningRuleMetadata = {[key: string]: unknown};

export type ExamineRewardsRequest = {customer_identification: ExamineCustomerIdentification, customer?: ({metadata?: EarningRuleMetadata | undefined}) | undefined, member?: ({metadata?: EarningRuleMetadata | undefined}) | undefined};

export type CreateApiV2LoyaltiesExamineRewardsArgs = {body: ExamineRewardsRequest};

export type CreateApiV2LoyaltiesExamineRewardsOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const examineCustomerReference = z.object({id: z.string().optional(), source_id: z.string().optional(), metadata: z.record(z.string(), z.unknown()).optional(), object: z.string().optional()});

export const examineRewardsRewardDetail = z.object({id: z.string().optional(), name: z.string().optional(), type: z.enum(["MATERIAL", "DIGITAL"]).optional(), metadata: z.record(z.string(), z.unknown()).optional(), object: z.string().optional()});

export const examineMemberReference = z.object({id: z.string().optional(), customer_id: z.string().optional(), program_id: z.string().optional(), metadata: z.record(z.string(), z.unknown()).optional(), object: z.string().optional()});

export const examineProgramReference = z.object({id: z.string().optional(), name: z.string().optional(), metadata: z.record(z.string(), z.unknown()).optional(), object: z.string().optional()});

export const examineCardReference = z.object({id: z.string().optional(), card_definition_id: z.string().optional(), card_type: z.literal("INDIVIDUAL").optional(), code: z.unknown(), object: z.string().optional()});

export const examineRewardsRewardReference = z.object({id: z.string().optional(), object: z.string().optional()});

export const examineRewardsRewardCost = z.object({points: z.number().optional(), object: z.string().optional()});

export const examineRewardsRewardUnavailabilityReason = z.object({reason: z.enum(["insufficient_balance", "out_of_stock", "no_matching_cost", "no_card_for_cost", "no_target_card", "reward_inactive"]).optional(), details: z.string().optional(), object: z.string().optional()});

export const examineRewardsCardRewardEstimation = z.object({reward: examineRewardsRewardReference.optional(), status: z.enum(["AVAILABLE", "UNAVAILABLE"]).optional(), cost: examineRewardsRewardCost.optional(), unavailability_reasons: z.array(examineRewardsRewardUnavailabilityReason).optional(), object: z.string().optional()});

export const examineRewardsCardEstimation = z.object({card: examineCardReference.optional(), rewards: z.array(examineRewardsCardRewardEstimation).optional(), object: z.string().optional()});

export const examineRewardsMembership = z.object({member: examineMemberReference.optional(), program: examineProgramReference.optional(), cards: z.array(examineRewardsCardEstimation).optional(), object: z.string().optional()});

export const examineRewardsResponse = z.object({customer: examineCustomerReference.optional(), rewards: z.array(examineRewardsRewardDetail).optional(), memberships: z.array(examineRewardsMembership).optional(), object: z.string().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
};

/**
 * Examine rewards
 * 
 * POST /v2/loyalties/examine/rewards
 */
export const createApiV2LoyaltiesExamineRewards = async (args: CreateApiV2LoyaltiesExamineRewardsArgs, options?: CreateApiV2LoyaltiesExamineRewardsOptions) => {
const {baseUrl = "https://api.voucherify.io", 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 = `${baseUrl.replace(/\/+$/, '')}/v2/loyalties/examine/rewards${query.size > 0 ? `?${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(examineRewardsResponse, await res.json())
};