import {z} from 'zod'

export type Client = {buildingNumber?: string | undefined, ccEmails?: Array<string> | undefined, city?: string | undefined, country?: string | undefined, details?: string | undefined, email?: string | undefined, files?: (Array<{digest: string, name: string, path: string, size: number, type?: 'CloudFile' | undefined, uploadDate?: (string | null) | undefined, url?: (string | null) | undefined}>) | undefined, id?: string | undefined, invoiceEmailSubjects?: {[key: string]: string} | undefined, name: string, notes?: string | undefined, street?: string | undefined, zip?: string | undefined};

export type CreateApiClientsSaveArgs = {body: {client: Client, upsert?: boolean | undefined} | Client};

export type CreateApiClientsSaveOptions = {baseUrl: string, ApiKeyHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const successEnvelope = z.object({data: z.unknown(), success: z.literal(true)});

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
};

/**
 * Save a client (create or update)
 * 
 * POST /clients/save
 * 
 * Also accepts auth: FirebaseIdToken
 */
export const createApiClientsSave = async (args: CreateApiClientsSaveArgs, options: CreateApiClientsSaveOptions) => {
const {baseUrl, fetch: fetchFn = fetch, ApiKeyHeader} = options ?? {}

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

if (ApiKeyHeader !== undefined) headers.set("X-API-Key", ApiKeyHeader)

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

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

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

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