import {z} from 'zod'

export type ReportBreakdownBy = 'SUBSIDIARY' | 'CUSTOM_FIELD';

export type GetApiReportsBalanceSheetArgs = {as_of_date: string, subsidiary_id?: string | undefined, breakdown_by?: ReportBreakdownBy | undefined, book_id?: (string | null) | undefined};

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

export const currencyCode = z.string();

export const reportBreakdown = z.object({type: z.enum(["SUBSIDIARY", "CUSTOM_FIELD", "PERIOD"]), name: z.string(), id: z.string().optional()});

export const roundedMonetaryAmount = z.object({amount: z.string(), currency: currencyCode});

export const breakdownBalance = z.object({breakdown_id: z.string(), amount: roundedMonetaryAmount});

export const reportAccountEntry = z.object({id: z.string(), code: z.string(), name: z.string(), balances: z.array(breakdownBalance)});

export const reportAccountGroupNested = z.object({name: z.string(), totals: z.array(breakdownBalance), accounts: z.array(reportAccountEntry)});

export const reportAccountGroup = z.object({name: z.string(), totals: z.array(breakdownBalance), accounts: z.array(reportAccountEntry), groups: z.array(reportAccountGroupNested).optional()});

export const namedReportSection = z.object({name: z.string(), totals: z.array(breakdownBalance), groups: z.array(reportAccountGroup), accounts: z.array(reportAccountEntry).optional()});

export const balanceSheetReport = z.object({as_of_date: z.string(), currency: currencyCode, breakdowns: z.array(reportBreakdown).optional(), sections: z.array(namedReportSection)});

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
};

/**
 * Retrieves balance sheet report
 * 
 * GET /reports/balance-sheet
 */
export const getApiReportsBalanceSheet = async (args: GetApiReportsBalanceSheetArgs, options?: GetApiReportsBalanceSheetOptions) => {
const {baseUrl = "https://api.rillet.com", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.as_of_date != null) query.append("as_of_date", String(args.as_of_date))
if (args.subsidiary_id != null) query.append("subsidiary_id", String(args.subsidiary_id))
if (args.breakdown_by != null) query.append("breakdown_by", String(args.breakdown_by))
if (args.book_id != null) query.append("book_id", String(args.book_id))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/reports/balance-sheet${query.size > 0 ? `?${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(balanceSheetReport, await res.json())
};