import {z} from 'zod'

export type CreateApiPlotObservationsArgs = {dry_run?: boolean | undefined, body: BodyInit};

export type CreateApiPlotObservationsOptions = {baseUrl?: string | undefined, oauth2?: string | undefined, fetch?: typeof fetch | undefined};

export const uploadSummary = z.object({counts: z.record(z.string(), z.object({inserted: z.number().int().optional()})).optional(), resources: z.record(z.string(), z.array(z.object({action: z.string().optional(), user_xx_code: z.string().optional(), vb_xx_code: z.string().optional()}).and(z.record(z.string(), z.unknown())))).optional()});

export const uploadResult = z.union([uploadSummary, z.object({dry_run_data: uploadSummary.optional(), message: z.string().optional()})]);

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
};

/**
 * Upload plot observations
 * 
 * POST /plot-observations
 */
export const createApiPlotObservations = async (args: CreateApiPlotObservationsArgs, options?: CreateApiPlotObservationsOptions) => {
const {baseUrl = "https://api.vegbank.org", fetch: fetchFn = fetch, oauth2} = options ?? {}

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

if (args.dry_run != null) query.append("dry_run", String(args.dry_run))
if (oauth2 !== undefined) headers.set('authorization', `Bearer ${oauth2}`)

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

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

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

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