import {z} from 'zod'

export type GetApiV1SdkCustomersReferenceArgs = {reference: string};

export type GetApiV1SdkCustomersReferenceOptions = {baseUrl?: string | undefined, SecretKey?: string | undefined, fetch?: typeof fetch | undefined};

export const sdkPlanSnapshotDto = z.object({currency: z.string(), features: z.record(z.string(), z.unknown()).nullable().optional(), isMetered: z.boolean().optional(), name: z.string().optional(), options: z.array(z.record(z.string(), z.unknown())).optional(), price: z.number(), reference: z.string().optional()});

export const sdkUsagePeriodDto = z.object({periodEnd: z.string().optional(), periodStart: z.string().optional()});

export const sdkPurchaseResponse = z.object({amount: z.number(), autoRenew: z.boolean().optional(), billingCycle: z.enum(["weekly", "monthly", "quarterly", "yearly"]).optional(), cancellationReason: z.string().optional(), cancelledAt: z.string().optional(), createdAt: z.string(), currency: z.string(), customerEmail: z.string().optional(), customerRef: z.string(), endDate: z.string().optional(), exchangeRate: z.number().optional(), isRecurring: z.boolean(), metadata: z.record(z.string(), z.unknown()).optional(), nextBillingDate: z.string().optional(), origin: z.enum(["paid", "free_default", "manual", "one_time", "credit_topup", "admin_assignment"]).optional(), originalAmount: z.number().optional(), paidAt: z.string().optional(), planRef: z.string().optional(), planSnapshot: sdkPlanSnapshotDto.optional(), productName: z.string().optional(), productRef: z.string().optional(), reference: z.string(), requiresPayment: z.boolean().optional(), startDate: z.string(), status: z.string(), usage: sdkUsagePeriodDto.optional()});

export const customerResponse = z.object({email: z.string(), externalRef: z.string().optional(), name: z.string(), purchases: z.array(sdkPurchaseResponse).optional(), reference: 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
};

/**
 * Get customer by reference
 * 
 * GET /v1/sdk/customers/{reference}
 */
export const getApiV1SdkCustomersReference = async (args: GetApiV1SdkCustomersReferenceArgs, options?: GetApiV1SdkCustomersReferenceOptions) => {
const {baseUrl = "https://api.solvapay.com", fetch: fetchFn = fetch, SecretKey} = options ?? {}

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

if (SecretKey !== undefined) headers.set('authorization', `Bearer ${SecretKey}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/sdk/customers/${encodeURIComponent(String(args.reference))}${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(customerResponse, await res.json())
};