Enabling login

- enabled login service
 - ep api is returing error but service call working fine

framework/elasticpath/api/operations/login.ts

@@ -8,7 +8,7 @@ import { Provider, ElasticpathConfig } from '..'
 
 export default function loginOperation({
   commerce,
-}: OperationContext<Provider>) {
+}: OperationContext<Provider | any>) {
   async function login<T extends LoginOperation>(opts: {
     variables: T['variables']
     config?: Partial<ElasticpathConfig>

framework/elasticpath/auth/use-login.tsx

@@ -1,16 +1,40 @@
-import { MutationHook } from '@commerce/utils/types'
+import { useCallback } from 'react'
+import type { MutationHook } from '@commerce/utils/types'
+import { CommerceError } from '@commerce/utils/errors'
 import useLogin, { UseLogin } from '@commerce/auth/use-login'
+import type { LoginHook } from '../types/login'
+import useCustomer from '../customer/use-customer'
 
 export default useLogin as UseLogin<typeof handler>
 
-export const handler: MutationHook<any> = {
+export const handler: MutationHook<LoginHook> = {
   fetchOptions: {
-    query: '',
+    url: '/api/login',
+    method: 'POST',
   },
-  async fetcher() {
-    return null
+  async fetcher({ input: { email, password }, options, fetch }) {
+    if (!(email && password)) {
+      throw new CommerceError({
+        message:
+          'A first name, last name, email and password are required to login',
+      })
+    }
+
+    return fetch({
+      ...options,
+      body: { email, password },
+    })
   },
-  useHook: () => () => {
-    return async function () {}
+  useHook: ({ fetch }) => () => {
+    const { revalidate } = useCustomer()
+
+    return useCallback(
+      async function login(input) {
+        const data = await fetch({ input })
+        await revalidate()
+        return data
+      },
+      [fetch, revalidate]
+    )
   },
 }