import {z} from 'zod'

export type GetApiCmV1EntityCountsArgs = {ad_account_id?: string | undefined, product_id?: string | undefined, campaign_id?: string | undefined, entity_type: 'UNKNOWN_ENTITY_TYPE' | 'ENTITY_TYPE_PLATFORM' | 'ENTITY_TYPE_AD_ACCOUNT' | 'ENTITY_TYPE_PRODUCT' | 'ENTITY_TYPE_CAMPAIGN' | 'ENTITY_TYPE_AD_GROUP' | 'ENTITY_TYPE_CREATIVE_GROUP' | 'ENTITY_TYPE_CREATIVE' | 'ENTITY_TYPE_TRACKING_LINK' | 'ENTITY_TYPE_TARGET' | 'ENTITY_TYPE_CUSTOMER_SET' | 'ENTITY_TYPE_CUSTOMER_ACTIVITY'};

export type GetApiCmV1EntityCountsOptions = {baseUrl?: string | undefined, Bearer?: string | undefined, fetch?: typeof fetch | undefined};

export const commonEntityType = z.enum(["UNKNOWN_ENTITY_TYPE", "ENTITY_TYPE_PLATFORM", "ENTITY_TYPE_AD_ACCOUNT", "ENTITY_TYPE_PRODUCT", "ENTITY_TYPE_CAMPAIGN", "ENTITY_TYPE_AD_GROUP", "ENTITY_TYPE_CREATIVE_GROUP", "ENTITY_TYPE_CREATIVE", "ENTITY_TYPE_TRACKING_LINK", "ENTITY_TYPE_TARGET", "ENTITY_TYPE_CUSTOMER_SET", "ENTITY_TYPE_CUSTOMER_ACTIVITY"]);

export const dspEntityCount = z.object({scope_type: commonEntityType.optional(), limit: z.string().optional(), current: z.string().optional()});

export const messagesReadEntityCountResponse = z.object({entity_counts: z.array(dspEntityCount).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
};

/**
 * Read entity counts
 * 
 * GET /cm/v1/entity-counts
 */
export const getApiCmV1EntityCounts = async (args: GetApiCmV1EntityCountsArgs, options?: GetApiCmV1EntityCountsOptions) => {
const {baseUrl = "https://api.moloco.cloud", fetch: fetchFn = fetch, Bearer} = options ?? {}

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

if (args.ad_account_id != null) query.append("ad_account_id", String(args.ad_account_id))
if (args.product_id != null) query.append("product_id", String(args.product_id))
if (args.campaign_id != null) query.append("campaign_id", String(args.campaign_id))
if (args.entity_type != null) query.append("entity_type", String(args.entity_type))
if (Bearer !== undefined) headers.set("Authorization", Bearer)

const url = `${baseUrl.replace(/\/+$/, '')}/cm/v1/entity-counts${query.size > 0 ? `?${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(messagesReadEntityCountResponse, await res.json())
};