import {z} from 'zod'

export type GetApiUsersUserIdEntitlementsArgs = {user_id: string};

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

export const subscription = z.object({current_period_type: z.enum(["normal", "trial", "intro"]).optional(), renew_state: z.enum(["will_renew", "canceled", "billing_issue"]).optional()});

export const product = z.object({product_id: z.string().optional(), subscription: subscription.optional()});

export const entitlement = z.object({id: z.string().optional(), active: z.boolean().optional(), started: z.number().int().optional(), expires: z.number().int().optional(), source: z.enum(["appstore", "playstore", "stripe", "paddle", "manual", "unknown"]).optional(), product: product.optional()});

export const getApiUsersUserIdEntitlementsResponse = z.object({data: z.array(entitlement).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 entitlements
 * 
 * GET /users/{user_id}/entitlements
 */
export const getApiUsersUserIdEntitlements = async (args: GetApiUsersUserIdEntitlementsArgs, options?: GetApiUsersUserIdEntitlementsOptions) => {
const {baseUrl = "https://api.qonversion.io/v4", fetch: fetchFn = fetch, ProjectKey} = options ?? {}

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

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

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