import { authMutationKeys } from "@better-auth-ui/core"
import { mutationOptions, useMutation } from "@tanstack/react-query"
import type { BetterFetchError } from "better-auth/react"

import type { AuthClient } from "../../lib/auth-client"

export type SendVerificationEmailParams<TAuthClient extends AuthClient> =
  Parameters<TAuthClient["sendVerificationEmail"]>[0]

export type SendVerificationEmailOptions<TAuthClient extends AuthClient> = Omit<
  ReturnType<typeof sendVerificationEmailOptions<TAuthClient>>,
  "mutationKey" | "mutationFn"
>

/**
 * Mutation options factory for sending a verification email.
 *
 * @param authClient - The Better Auth client.
 */
export function sendVerificationEmailOptions<TAuthClient extends AuthClient>(
  authClient: TAuthClient
) {
  const mutationKey = authMutationKeys.sendVerificationEmail

  const mutationFn = (params: SendVerificationEmailParams<TAuthClient>) =>
    authClient.sendVerificationEmail({
      ...params,
      fetchOptions: { ...params?.fetchOptions, throw: true }
    })

  return mutationOptions<
    Awaited<ReturnType<typeof mutationFn>>,
    BetterFetchError,
    Parameters<typeof mutationFn>[0]
  >({
    mutationKey,
    mutationFn
  })
}

/**
 * Create a mutation for sending an email-verification link.
 *
 * Wraps `authClient.sendVerificationEmail` and forwards React Query mutation
 * options such as `onSuccess`, `onError`, and `retry`.
 *
 * @param authClient - The Better Auth client.
 * @param options - React Query options forwarded to `useMutation`.
 */
export function useSendVerificationEmail<TAuthClient extends AuthClient>(
  authClient: TAuthClient,
  options?: SendVerificationEmailOptions<TAuthClient>
) {
  return useMutation({
    ...sendVerificationEmailOptions(authClient),
    ...options
  })
}