import {z} from 'zod'

export type GetApiV1AdsCampaignsCampaignIdBiddingArgs = {campaignId: string, accountId: string, platform: 'google', adAccountId?: string | undefined, customerId?: string | undefined};

export type GetApiV1AdsCampaignsCampaignIdBiddingOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const bidStrategy = z.enum(["LOWEST_COST_WITHOUT_CAP", "LOWEST_COST_WITH_BID_CAP", "COST_CAP", "LOWEST_COST_WITH_MIN_ROAS"]);

export const getApiV1AdsCampaignsCampaignIdBiddingResponse = z.object({campaignId: z.string().optional(), channel: z.enum(["SEARCH", "DISPLAY"]).optional(), biddingStrategyType: z.string().optional(), bidSpec: z.object({bidStrategy: bidStrategy.optional(), bidAmount: z.number().optional(), roasAverageFloor: z.number().optional(), portfolioBidStrategyId: z.string().optional()}).nullable().optional(), portfolio: z.object({id: z.string().optional(), name: z.string().optional()}).nullable().optional(), cachedAt: z.string().nullable().optional(), stale: z.boolean().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 a campaign's current bidding
 * 
 * GET /v1/ads/campaigns/{campaignId}/bidding
 */
export const getApiV1AdsCampaignsCampaignIdBidding = async (args: GetApiV1AdsCampaignsCampaignIdBiddingArgs, options?: GetApiV1AdsCampaignsCampaignIdBiddingOptions) => {
const {baseUrl = "https://zernio.com/api", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.accountId != null) query.append("accountId", String(args.accountId))
if (args.platform != null) query.append("platform", String(args.platform))
if (args.adAccountId != null) query.append("adAccountId", String(args.adAccountId))
if (args.customerId != null) query.append("customerId", String(args.customerId))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/ads/campaigns/${encodeURIComponent(String(args.campaignId))}/bidding${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(getApiV1AdsCampaignsCampaignIdBiddingResponse, await res.json())
};