import {z} from 'zod'

export type GetApiApiV1BillingPlanOptions = {baseUrl?: string | undefined, BearerToken?: string | undefined, fetch?: typeof fetch | undefined};

export const billingAddon = z.object({key: z.string().optional(), purchased_quantity: z.number().int().optional(), total_quantity: z.number().int().optional(), is_active: z.boolean().optional(), interval: z.enum(["monthly", "yearly"]).nullable().optional()});

export const billingPlan = z.object({name: z.string().optional(), short_description: z.string().optional(), interval: z.enum(["monthly", "yearly"]).optional(), status: z.enum(["active", "trialing", "cancelling", "paused"]).optional(), current_period_start: z.number().int().optional(), current_period_end: z.number().int().optional(), addons: z.array(billingAddon).optional()});

export const getApiApiV1BillingPlanResponse = z.object({status: z.enum(["error", "success"]).optional(), data: billingPlan.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
};

/**
 * Get current plan details.
 * 
 * GET /api/v1/billing/plan
 */
export const getApiApiV1BillingPlan = async (options?: GetApiApiV1BillingPlanOptions) => {
const {baseUrl = "https://app.customgpt.ai", fetch: fetchFn = fetch, BearerToken} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/billing/plan${query.size > 0 ? `?${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(getApiApiV1BillingPlanResponse, await res.json())
};