import {z} from 'zod'

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

export const getApiWorkspaceResponse = z.object({slug: z.string(), counts: z.object({campaigns: z.number(), audiences: z.number(), dataStores: z.number(), brands: z.number()}), recentCampaigns: z.array(z.object({id: z.string(), name: z.string(), status: z.string(), objective: z.string(), brandId: z.string().nullable(), brand: z.object({name: z.string(), website: z.string(), description: z.string()}), industry: z.string(), language: z.string(), locations: z.array(z.string()), successMetrics: z.array(z.string()), campaignType: z.string().nullable(), budget: z.number().nullable(), budgetType: z.enum(["daily", "total"]).nullable(), endDate: z.string().nullable(), biddingStrategy: z.string().nullable(), targetCpa: z.number().nullable(), targetRoas: z.number().nullable(), audiences: z.array(z.object({id: z.string(), name: z.string(), audienceId: z.string().nullable(), dataStoreIds: z.array(z.string())})), googleAds: z.object({customerId: z.string().nullable(), accountName: z.string().nullable(), campaignId: z.string().nullable(), status: z.string().nullable()}), url: z.string(), createdAt: z.string().nullable(), updatedAt: z.string().nullable()}))});

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
};

/**
 * Get the workspace
 * 
 * GET /workspace
 */
export const getApiWorkspace = async (options?: GetApiWorkspaceOptions) => {
const {baseUrl = "https://www.fandom.ai/api/v1", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

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

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