import {z} from 'zod'

export type GetApiJurisdictionsArgs = {countryCode?: string | undefined, fallbackToFATF?: boolean | undefined, division?: string | undefined};

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

export const field = z.object({field: z.string().optional()});

export const condition: z.ZodType<Condition> = z.object({type: z.string().optional(), fields: z.array(field).optional(), conditions: z.array(z.lazy(() => condition)).optional()});

export const rule = z.object({type: z.string().optional(), fields: z.array(field).optional(), conditions: z.array(condition).optional()});

export const threshold = z.object({rules: z.array(rule).optional(), threshold: z.number().optional()});

export const jurisdictionList = z.array(z.object({thresholds: z.array(threshold), countryCode: z.string(), currency: 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
};

/**
 * List all Jurisdictions
 * 
 * GET /jurisdictions
 */
export const getApiJurisdictions = async (args: GetApiJurisdictionsArgs, options?: GetApiJurisdictionsOptions) => {
const {baseUrl = "https://api.eu1.notabene.id", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.countryCode != null) query.append("countryCode", String(args.countryCode))
if (args.fallbackToFATF != null) query.append("fallbackToFATF", String(args.fallbackToFATF))
if (args.division != null) query.append("division", String(args.division))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

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