import {z} from 'zod'

export type EventCreateRequest = {customerId: string, eventTypeId: string, datetime: string, idempotencyKey: string, value: number, differentiator?: string | undefined, invoiceSplitKey?: string | undefined, metadata?: {[key: string]: Record<string, never>} | undefined};

export type CreateApiV1EventsArgs = {body: EventCreateRequest};

export type CreateApiV1EventsOptions = {baseUrl?: string | undefined, customHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const eventResponse = z.object({customerId: z.string().optional(), eventTypeId: z.string().optional(), datetime: z.string().optional(), idempotencyKey: z.string().optional(), value: z.number().optional(), differentiator: z.string().optional(), invoiceSplitKey: z.string().optional(), parentEventId: z.string().optional(), metadata: z.record(z.string(), z.object({})).optional()});

export const eventData = z.object({events: eventResponse.optional()});

export const eventCreateResponse = z.object({success: z.boolean().optional(), message: z.string().optional(), data: eventData.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
};

/**
 * Create an event
 * 
 * POST /v1/events
 */
export const createApiV1Events = async (args: CreateApiV1EventsArgs, options?: CreateApiV1EventsOptions) => {
const {baseUrl = "https://integrators.prod.api.tabsplatform.com", fetch: fetchFn = fetch, customHeader} = options ?? {}

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

if (customHeader !== undefined) headers.set("Authorization", customHeader)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/events${query.size > 0 ? `?${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(eventCreateResponse, await res.json())
};