import {z} from 'zod'

export type GetApiStatesArgs = {countryId?: number | undefined, isActive?: boolean | undefined, search?: string | undefined, page: number, size: number};

export type GetApiStatesOptions = {baseUrl?: string | undefined, accessToken?: string | undefined, fetch?: typeof fetch | undefined};

export const countryResponseDto = z.object({id: z.number(), countryName: z.string(), currencyCode: z.string(), currencySymbol: z.string(), mailFrom: z.string(), supportMail: z.string(), isActive: z.boolean(), isDeleted: z.boolean(), emailSignature: z.string().nullable(), displayName: z.string().nullable()});

export const stateResponseDto = z.object({id: z.number(), countryId: z.number(), stateName: z.string(), externalLink: z.string().nullable(), isActive: z.boolean(), isDeleted: z.boolean(), country: countryResponseDto});

export const getApiStatesResponse = z.array(stateResponseDto);

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
};

/**
 * Get states with filters
 * 
 * GET /states
 */
export const getApiStates = async (args: GetApiStatesArgs, options?: GetApiStatesOptions) => {
const {baseUrl = "https://api.findmydocument.net", fetch: fetchFn = fetch, accessToken} = options ?? {}

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

if (args.countryId != null) query.append("countryId", String(args.countryId))
if (args.isActive != null) query.append("isActive", String(args.isActive))
if (args.search != null) query.append("search", String(args.search))
if (args.page != null) query.append("page", String(args.page))
if (args.size != null) query.append("size", String(args.size))
if (accessToken !== undefined) headers.set('authorization', `Bearer ${accessToken}`)

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