import {z} from 'zod'

export type And = {[key: string]: unknown};

export type Not = {[key: string]: unknown};

export type Or = {[key: string]: unknown};

export type Value = {field?: string | undefined, operator?: ('EQUALS' | 'NOT' | 'IN' | 'NOT_IN' | 'LT' | 'LTE' | 'GT' | 'GTE' | 'CONTAINS' | 'NOT_CONTAINS' | 'STARTS_WITH' | 'ENDS_WITH' | 'HAS_ANY') | undefined, value?: Record<string, never> | undefined} | {[key: string]: unknown};

export type FilteredColumn = {alias?: string | undefined, friendly?: string | undefined, name?: string | undefined, type: string, filter?: (Array<And | Not | Or | Value>) | undefined, nullReplacement?: Record<string, never> | undefined};

export type SimpleColumn = {alias?: string | undefined, friendly?: string | undefined, name?: string | undefined, type: string};

export type Filter = {[key: string]: unknown};

export type ExportRequest = {key: string, data: Array<FilteredColumn | SimpleColumn>, begin: string, end?: string | undefined, format?: 'csv' | undefined, fullname?: boolean | undefined, includetoday?: boolean | undefined, limit?: number | undefined, offset?: number | undefined, sort?: Array<string> | undefined, sum?: Array<string> | undefined, reportName?: string | undefined, filter?: Filter | undefined, allownull?: boolean | undefined, formatdata?: boolean | undefined, nodatatiercheck?: string | undefined, period?: string | undefined, dataColumns?: Array<string> | undefined};

export type CreateApiBatchArgs = {body: ExportRequest};

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

export const exportResponse = z.object({batchId: z.number().int().optional(), status: z.string().optional(), submittedAt: z.string().optional(), reportName: 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
};

/**
 * Submit an async export job
 * 
 * POST /batch
 */
export const createApiBatch = async (args: CreateApiBatchArgs, options?: CreateApiBatchOptions) => {
const {baseUrl = "https://api3.mountain.com", fetch: fetchFn = fetch} = options ?? {}

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

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