Added login operation

lib/bigcommerce/api/operations/login.ts

@@ -0,0 +1,51 @@
+import type {
+  LoginMutation,
+  LoginMutationVariables,
+} from 'lib/bigcommerce/schema'
+import type { RecursivePartial } from '../utils/types'
+import { BigcommerceConfig, getConfig } from '..'
+
+export const loginMutation = /* GraphQL */ `
+  mutation login($email: String!, $password: String!) {
+    login(email: $email, password: $password) {
+      result
+    }
+  }
+`
+
+export type LoginResult<T extends { result?: any } = { result?: string }> = T
+
+export type LoginVariables = LoginMutationVariables
+
+async function login(opts: {
+  variables: LoginVariables
+  config?: BigcommerceConfig
+}): Promise<LoginResult>
+
+async function login<T extends { result?: any }, V = any>(opts: {
+  query: string
+  variables: V
+  config?: BigcommerceConfig
+}): Promise<LoginResult<T>>
+
+async function login({
+  query = loginMutation,
+  variables,
+  config,
+}: {
+  query?: string
+  variables: LoginVariables
+  config?: BigcommerceConfig
+}): Promise<LoginResult> {
+  config = getConfig(config)
+
+  const data = await config.fetch<RecursivePartial<LoginMutation>>(query, {
+    variables,
+  })
+
+  return {
+    result: data.login?.result,
+  }
+}
+
+export default login