import {z} from 'zod'

export type V2SpendType = 'SPEND_TYPE_DAILY' | 'SPEND_TYPE_HOURLY' | 'SPEND_TYPE_TOTAL';

export type V2CampaignSpends = {id: string, spendType: V2SpendType};

export type V2CampaignSpendRequest = {campaignSpendRequest?: Array<V2CampaignSpends> | undefined};

export type CreateApiV2SpendCampaignArgs = {body: V2CampaignSpendRequest};

export type CreateApiV2SpendCampaignOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const v2SpendType = z.enum(["SPEND_TYPE_DAILY", "SPEND_TYPE_HOURLY", "SPEND_TYPE_TOTAL"]);

export const campaignSpendSuccess = z.object({amount: z.number().optional()});

export const campaignSpendFailure = z.object({message: z.string().optional()});

export const v2CampaignSpend = z.object({id: z.string().optional(), spendType: v2SpendType.optional(), success: campaignSpendSuccess.optional(), failure: campaignSpendFailure.optional()});

export const v2CampaignSpendResponse = z.object({campaignSpends: z.array(v2CampaignSpend).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
};

/**
 * Retrieve campaign spend details
 * 
 * POST /v2/spend/campaign
 */
export const createApiV2SpendCampaign = async (args: CreateApiV2SpendCampaignArgs, options?: CreateApiV2SpendCampaignOptions) => {
const {baseUrl = "https://auth.<env>.citrusad.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 = `${baseUrl.replace(/\/+$/, '')}/v2/spend/campaign${query.size > 0 ? `?${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(v2CampaignSpendResponse, await res.json())
};