import {z} from 'zod'

export type GetApiCampaignIdArgs = {id: string};

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

export const campaignType = z.enum(["REFERRAL", "AFFILIATE"]);

export const campaignStatus = z.enum(["DRAFT", "IN_PROGRESS", "COMPLETE", "DELETED"]);

export const rewardType = z.enum(["SINGLE_SIDED", "DOUBLE_SIDED", "MILESTONE", "LEADERBOARD", "AFFILIATE"]);

export const metadata = z.record(z.string(), z.unknown());

export const commissionStructure = z.object({amount: z.number().int().nullable().optional(), event: z.string().nullable().optional(), type: z.enum(["PERCENT", "AMOUNT", "null"]).nullable().optional(), minPaidReferrals: z.number().int().nullable().optional(), holdDuration: z.number().int().nullable().optional(), duration: z.string().nullable().optional(), durationInMonths: z.number().int().nullable().optional(), approvalRequired: z.boolean().nullable().optional(), percent: z.number().nullable().optional(), hasMaxAmount: z.boolean().nullable().optional(), maxAmount: z.number().int().nullable().optional(), maxAmountISO: z.string().nullable().optional(), hasIntro: z.boolean().nullable().optional(), introType: z.string().nullable().optional(), introPercent: z.number().nullable().optional(), introAmount: z.number().int().nullable().optional(), introAmountISO: z.string().nullable().optional(), introDuration: z.string().nullable().optional(), introDurationInMonths: z.number().int().nullable().optional()}).and(z.record(z.string(), z.unknown()));

export const reward = z.object({id: z.string(), type: rewardType, description: z.string().nullable().optional(), referralDescription: z.string().nullable().optional(), referredRewardUpfront: z.boolean().optional(), isUnlimited: z.boolean(), limit: z.number().int().nullable().optional(), conversionsRequired: z.number().int().nullable().optional(), numberOfWinners: z.number().int().nullable().optional(), limitDuration: z.enum(["IN_TOTAL", "PER_MONTH", "null"]).nullable().optional(), imageUrl: z.string().nullable().optional(), couponCode: z.string().nullable().optional(), order: z.number().int().nullable().optional(), nextMilestonePrefix: z.string().nullable().optional(), nextMilestoneSuffix: z.string().nullable().optional(), metadata: metadata, commissionStructure: commissionStructure.nullable().optional()});

export const campaign = z.object({id: z.string(), name: z.string(), type: campaignType, referralCount: z.number().int(), participantCount: z.number().int(), impressionCount: z.number().int(), inviteCount: z.number().int(), winnerCount: z.number().int(), currencyISO: z.string().min(3).max(3).nullable().optional(), status: campaignStatus, rewards: z.array(reward)});

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 a campaign
 * 
 * GET /campaign/{id}
 */
export const getApiCampaignId = async (args: GetApiCampaignIdArgs, options?: GetApiCampaignIdOptions) => {
const {baseUrl = "https://api.growsurf.com/v2", fetch: fetchFn = fetch, apiKeyAuth} = options ?? {}

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

if (apiKeyAuth !== undefined) headers.set('authorization', `Bearer ${apiKeyAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/campaign/${encodeURIComponent(String(args.id))}${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(campaign, await res.json())
};