import {z} from 'zod'

export type GetApiV2ContractsContractIdLinesArgs = {contract_id: string, limit?: number | undefined, starting_after?: string | undefined};

export type GetApiV2ContractsContractIdLinesOptions = {baseUrl: string, LedgerUpApiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const ledgerId = z.string();

export const contractLineStatus = z.enum(["active", "canceled", "ended"]);

export const unixTimestamp = z.number().int();

export const billingTiming = z.enum(["advance", "arrears", "point_in_time"]);

export const prorationMode = z.enum(["none", "prorate"]);

export const properties = z.unknown();

export const contractLine = z.object({id: ledgerId, contract_id: ledgerId, price_id: ledgerId.nullable(), rate_card_id: ledgerId.nullable(), description: z.string().nullable(), quantity: z.string(), status: contractLineStatus, starts_at: unixTimestamp.nullable(), ends_at: unixTimestamp.nullable(), billing_timing: billingTiming, proration: prorationMode, metadata: properties, created_at: unixTimestamp, updated_at: unixTimestamp, canceled_at: unixTimestamp.nullable(), cancel_at: unixTimestamp.nullable()});

export const contractLineList = z.object({data: z.array(contractLine), has_more: z.boolean()});

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
};

/**
 * List contract lines.
 * 
 * GET /v2/contracts/{contract_id}/lines
 */
export const getApiV2ContractsContractIdLines = async (args: GetApiV2ContractsContractIdLinesArgs, options: GetApiV2ContractsContractIdLinesOptions) => {
const {baseUrl, fetch: fetchFn = fetch, LedgerUpApiKey} = options ?? {}

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

if (args.limit != null) query.append("limit", String(args.limit))
if (args.starting_after != null) query.append("starting_after", String(args.starting_after))
if (LedgerUpApiKey !== undefined) headers.set("x-api-key", LedgerUpApiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/v2/contracts/${encodeURIComponent(String(args.contract_id))}/lines${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(contractLineList, await res.json())
};