import {z} from 'zod'

export type CreateApiReportsArgs = {customer_id: string, report_types: Array<string>, include_account_natures?: Array<string> | undefined, currency_code: string, from_date: string, to_date: string};

export type CreateApiReportsOptions = {baseUrl?: string | undefined, appId?: string | undefined, secret?: string | undefined, fetch?: typeof fetch | undefined};

export const basicReport = z.object({id: z.string(), customer_id: z.string(), customer_identifier: z.string(), status: z.enum(["initialized", "calculating", "success", "failed"]), connection_ids: z.array(z.string()), include_account_natures: z.array(z.string()).optional()});

export const createdReportResponse = z.object({data: basicReport.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 Financial Insights report
 * 
 * POST /reports
 */
export const createApiReports = async (args: CreateApiReportsArgs, options?: CreateApiReportsOptions) => {
const {baseUrl = "https://www.saltedge.com/api/v5", fetch: fetchFn = fetch, appId, secret} = options ?? {}

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

if (args.customer_id != null) query.append("customer_id", String(args.customer_id))
for (const item of args.report_types ?? []) query.append("report_types", String(item))
for (const item of args.include_account_natures ?? []) query.append("include_account_natures", String(item))
if (args.currency_code != null) query.append("currency_code", String(args.currency_code))
if (args.from_date != null) query.append("from_date", String(args.from_date))
if (args.to_date != null) query.append("to_date", String(args.to_date))
if (appId !== undefined) headers.set("App-id", appId)
if (secret !== undefined) headers.set("Secret", secret)

const url = `${baseUrl.replace(/\/+$/, '')}/reports${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(createdReportResponse, await res.json())
};