import {z} from 'zod'

export type RetrieveTransactionsSummariesRequest = {contactIds: Array<string>, groupBy: 'contactId'};

export type CreateApiV1AnalyticsTransactionSummariesArgs = {Authorization: string, 'User-Agent': string, body: RetrieveTransactionsSummariesRequest};

export type CreateApiV1AnalyticsTransactionSummariesOptions = {baseUrl?: string | undefined, Authorization?: string | undefined, fetch?: typeof fetch | undefined};

export const monetaryAmount = z.object({currency: z.object({currencyCode: z.string().optional(), defaultFractionDigits: z.number().int().optional(), displayName: z.string().optional(), numericCode: z.number().int().optional(), numericCodeAsString: z.string().optional(), symbol: z.string().optional()}).optional(), value: z.number().optional()});

export const transactionsSummary = z.object({donationCount: z.number().int().optional(), firstDonationSubmittedOn: z.string().optional(), firstOrderSubmittedOn: z.string().optional(), lastDonationSubmittedOn: z.string().optional(), lastOrderSubmittedOn: z.string().optional(), orderCount: z.number().int().optional(), totalDonationAmount: monetaryAmount.optional(), totalOrderAmount: monetaryAmount.optional(), totalRefundAmount: monetaryAmount.optional()});

export const transactionsSummaryWrapper = z.object({contactId: z.string().optional(), transactionsSummary: transactionsSummary.optional()});

export const retrieveTransactionsSummariesResponse = z.object({transactionsSummaryWrappers: z.array(transactionsSummaryWrapper).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
};

/**
 * Retrieve transaction summaries grouped by contact
 * 
 * POST /v1/analytics/transaction-summaries
 */
export const createApiV1AnalyticsTransactionSummaries = async (args: CreateApiV1AnalyticsTransactionSummariesArgs, options?: CreateApiV1AnalyticsTransactionSummariesOptions) => {
const {baseUrl = "https://api.squarespace.com", fetch: fetchFn = fetch, Authorization} = options ?? {}

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

if (args.Authorization != null) headers.set("Authorization", String(args.Authorization))
if (args['User-Agent'] != null) headers.set("User-Agent", String(args['User-Agent']))
if (Authorization !== undefined) headers.set('authorization', `Bearer ${Authorization}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/analytics/transaction-summaries${query.size > 0 ? `?${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(retrieveTransactionsSummariesResponse, await res.json())
};