import {z} from 'zod'

export type Rule = {field: string, op: string, value: unknown, unknown?: ('exclude' | 'review' | null) | undefined};

export type PreferredRule = {field: string, op: string, value: unknown, weight: number};

export type Cutoffs = {pursue: number, monitor: number};

export type DiscoveryDraft = {markets: Array<string>, must?: Array<Rule> | undefined, preferred?: Array<PreferredRule> | undefined, verdict_cutoffs: Cutoffs};

export type PromoteRequest = {parcel_key: string, buy_box: string, query_hash: string, draft?: (DiscoveryDraft | null) | undefined};

export type CreateApiV2PipelineArgs = {authorization?: (string | null) | undefined, 'X-Tenant'?: (string | null) | undefined, body: PromoteRequest};

export type CreateApiV2PipelineOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const promoteResponse = z.object({property_id: z.string(), pipeline_item_id: z.string(), buy_box_match_id: z.string(), diligence_job_id: z.string(), status: 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
};

/**
 * Promote To Pipeline
 * 
 * POST /v2/pipeline
 */
export const createApiV2Pipeline = async (args: CreateApiV2PipelineArgs, options: CreateApiV2PipelineOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.authorization != null) headers.set("authorization", String(args.authorization))
if (args['X-Tenant'] != null) headers.set("X-Tenant", String(args['X-Tenant']))

const url = `${baseUrl.replace(/\/+$/, '')}/v2/pipeline${query.size > 0 ? `?${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(promoteResponse, await res.json())
};