Implement the new wasp/server/crud API (#1695)

waspc/data/Generator/templates/sdk/package.json

@@ -123,7 +123,8 @@
       "./client/api": "./dist/api/index.js",
       "./auth": "./dist/auth/index.js",
       "./client/auth": "./dist/client/auth/index.js",
-      "./server/auth": "./dist/server/auth/index.js"
+      "./server/auth": "./dist/server/auth/index.js",
+      "./server/crud": "./dist/server/crud/index.js"
    },
    {=!
      TypeScript doesn't care about the redirects we define above in "exports" field; those

waspc/data/Generator/templates/sdk/server/crud/_operationTypes.ts

@@ -34,13 +34,42 @@ import type {
 type _WaspEntityTagged = _{= crud.entityUpper =}
 type _WaspEntity = {= crud.entityUpper =}
 
+/**
+ * PUBLIC API
+ */
+export namespace {= crud.name =} {
+  {=# crud.operations.GetAll =}
+  export type GetAllQuery<Input extends Payload, Output extends Payload> = {= queryType =}<[_WaspEntityTagged], Input, Output>
+  {=/ crud.operations.GetAll =}
+
+  {=# crud.operations.Get =}
+  export type GetQuery<Input extends Payload, Output extends Payload> = {= queryType =}<[_WaspEntityTagged], Input, Output>
+  {=/ crud.operations.Get =}
+
+  {=# crud.operations.Create =}
+  export type CreateAction<Input extends Payload, Output extends Payload>= {= actionType =}<[_WaspEntityTagged], Input, Output>
+  {=/ crud.operations.Create =}
+
+  {=# crud.operations.Update =}
+  export type UpdateAction<Input extends Payload, Output extends Payload> = {= actionType =}<[_WaspEntityTagged], Input, Output>
+  {=/ crud.operations.Update =}
+
+  {=# crud.operations.Delete =}
+  export type DeleteAction<Input extends Payload, Output extends Payload> = {= actionType =}<[_WaspEntityTagged], Input, Output>
+  {=/ crud.operations.Delete =}
+}
+
+/**
+ * PRIVATE API
+ * 
+ * The types with the `Resolved` suffix are the types that are used internally by the Wasp client
+ * to implement full-stack type safety.
+ */
 {=# crud.operations.GetAll =}
-// Get All query
-export type GetAllQuery<Input extends Payload, Output extends Payload> = {= queryType =}<[_WaspEntityTagged], Input, Output>
 {=^ overrides.GetAll.isDefined =}
 type GetAllInput = {}
 type GetAllOutput = _WaspEntity[]
-export type GetAllQueryResolved = GetAllQuery<GetAllInput, GetAllOutput>
+export type GetAllQueryResolved = {= crud.name =}.GetAllQuery<GetAllInput, GetAllOutput>
 {=/ overrides.GetAll.isDefined =}
 {=# overrides.GetAll.isDefined =}
 const _waspGetAllQuery = {= overrides.GetAll.importIdentifier =}
@@ -49,12 +78,10 @@ export type GetAllQueryResolved = typeof _waspGetAllQuery
 {=/ crud.operations.GetAll =}
 
 {=# crud.operations.Get =}
-// Get query
-export type GetQuery<Input extends Payload, Output extends Payload> = {= queryType =}<[_WaspEntityTagged], Input, Output>
 {=^ overrides.Get.isDefined =}
 type GetInput = Prisma.{= crud.entityUpper =}WhereUniqueInput
 type GetOutput = _WaspEntity | null
-export type GetQueryResolved = GetQuery<GetInput, GetOutput>
+export type GetQueryResolved = {= crud.name =}.GetQuery<GetInput, GetOutput>
 {=/ overrides.Get.isDefined =}
 {=# overrides.Get.isDefined =}
 const _waspGetQuery = {= overrides.Get.importIdentifier =}
@@ -63,12 +90,10 @@ export type GetQueryResolved = typeof _waspGetQuery
 {=/ crud.operations.Get =}
 
 {=# crud.operations.Create =}
-// Create action
-export type CreateAction<Input extends Payload, Output extends Payload>= {= actionType =}<[_WaspEntityTagged], Input, Output>
 {=^ overrides.Create.isDefined =}
 type CreateInput = Prisma.{= crud.entityUpper =}CreateInput
 type CreateOutput = _WaspEntity
-export type CreateActionResolved = CreateAction<CreateInput, CreateOutput>
+export type CreateActionResolved = {= crud.name =}.CreateAction<CreateInput, CreateOutput>
 {=/ overrides.Create.isDefined =}
 {=# overrides.Create.isDefined =}
 const _waspCreateAction = {= overrides.Create.importIdentifier =}
@@ -77,12 +102,10 @@ export type CreateActionResolved = typeof _waspCreateAction
 {=/ crud.operations.Create =}
 
 {=# crud.operations.Update =}
-// Update action
-export type UpdateAction<Input extends Payload, Output extends Payload> = {= actionType =}<[_WaspEntityTagged], Input, Output>
 {=^ overrides.Update.isDefined =}
 type UpdateInput = Prisma.{= crud.entityUpper =}UpdateInput & Prisma.{= crud.entityUpper =}WhereUniqueInput
 type UpdateOutput = _WaspEntity
-export type UpdateActionResolved = UpdateAction<UpdateInput, UpdateOutput>
+export type UpdateActionResolved = {= crud.name =}.UpdateAction<UpdateInput, UpdateOutput>
 {=/ overrides.Update.isDefined =}
 {=# overrides.Update.isDefined =}
 const _waspUpdateAction = {= overrides.Update.importIdentifier =}
@@ -91,12 +114,10 @@ export type UpdateActionResolved = typeof _waspUpdateAction
 {=/ crud.operations.Update =}
 
 {=# crud.operations.Delete =}
-// Delete action
-export type DeleteAction<Input extends Payload, Output extends Payload> = {= actionType =}<[_WaspEntityTagged], Input, Output>
 {=^ overrides.Delete.isDefined =}
 type DeleteInput = Prisma.{= crud.entityUpper =}WhereUniqueInput
 type DeleteOutput = _WaspEntity
-export type DeleteActionResolved = DeleteAction<DeleteInput, DeleteOutput>
+export type DeleteActionResolved = {= crud.name =}.DeleteAction<DeleteInput, DeleteOutput>
 {=/ overrides.Delete.isDefined =}
 {=# overrides.Delete.isDefined =}
 const _waspDeleteAction = {= overrides.Delete.importIdentifier =}

waspc/data/Generator/templates/sdk/server/crud/index.ts

@@ -0,0 +1,5 @@
+{{={= =}=}}
+
+{=# cruds =}
+  export type { {= name =} } from './{= name =}';
+{=/ cruds =}

waspc/examples/todo-typescript/.wasp/out/sdk/wasp/auth/forms/Auth.tsx

@@ -0,0 +1,96 @@
+import { useState, createContext } from 'react'
+import { createTheme } from '@stitches/react'
+import { styled } from 'wasp/core/stitches.config'
+
+import {
+  type State,
+  type CustomizationOptions,
+  type ErrorMessage,
+  type AdditionalSignupFields,
+} from './types'
+import { LoginSignupForm } from './internal/common/LoginSignupForm'
+import { MessageError, MessageSuccess } from './internal/Message'
+import { ForgotPasswordForm } from './internal/email/ForgotPasswordForm'
+import { ResetPasswordForm } from './internal/email/ResetPasswordForm'
+import { VerifyEmailForm } from './internal/email/VerifyEmailForm'
+
+const logoStyle = {
+  height: '3rem'
+}
+
+const Container = styled('div', {
+  display: 'flex',
+  flexDirection: 'column',
+})
+
+const HeaderText = styled('h2', {
+  fontSize: '1.875rem',
+  fontWeight: '700',
+  marginTop: '1.5rem'
+})
+
+
+// PRIVATE API
+export const AuthContext = createContext({
+  isLoading: false,
+  setIsLoading: (isLoading: boolean) => {},
+  setErrorMessage: (errorMessage: ErrorMessage | null) => {},
+  setSuccessMessage: (successMessage: string | null) => {},
+})
+
+function Auth ({ state, appearance, logo, socialLayout = 'horizontal', additionalSignupFields }: {
+    state: State;
+} & CustomizationOptions & {
+  additionalSignupFields?: AdditionalSignupFields;
+}) {
+  const [errorMessage, setErrorMessage] = useState<ErrorMessage | null>(null);
+  const [successMessage, setSuccessMessage] = useState<string | null>(null);
+  const [isLoading, setIsLoading] = useState(false);
+
+  // TODO(matija): this is called on every render, is it a problem?
+  // If we do it in useEffect(), then there is a glitch between the default color and the
+  // user provided one.
+  const customTheme = createTheme(appearance ?? {})
+
+  const titles: Record<State, string> = {
+    login: 'Log in to your account',
+    signup: 'Create a new account',
+    "forgot-password": "Forgot your password?",
+    "reset-password": "Reset your password",
+    "verify-email": "Email verification",
+  }
+  const title = titles[state]
+
+  const socialButtonsDirection = socialLayout === 'vertical' ? 'vertical' : 'horizontal'
+
+  return (
+    <Container className={customTheme}>
+      <div>
+        {logo && (<img style={logoStyle} src={logo} alt='Your Company' />)}
+        <HeaderText>{title}</HeaderText>
+      </div>
+
+      {errorMessage && (
+        <MessageError>
+          {errorMessage.title}{errorMessage.description && ': '}{errorMessage.description}
+        </MessageError>
+      )}
+      {successMessage && <MessageSuccess>{successMessage}</MessageSuccess>}
+      <AuthContext.Provider value={{ isLoading, setIsLoading, setErrorMessage, setSuccessMessage }}>
+        {(state === 'login' || state === 'signup') && (
+          <LoginSignupForm
+            state={state}
+            socialButtonsDirection={socialButtonsDirection}
+            additionalSignupFields={additionalSignupFields}
+          />
+        )}
+        {state === 'forgot-password' && (<ForgotPasswordForm />)}
+        {state === 'reset-password' && (<ResetPasswordForm />)}
+        {state === 'verify-email' && (<VerifyEmailForm />)}
+      </AuthContext.Provider>
+    </Container>
+  )
+}
+
+// PRIVATE API
+export default Auth;

waspc/examples/todo-typescript/.wasp/out/sdk/wasp/auth/forms/Login.tsx

@@ -0,0 +1,18 @@
+import Auth from './Auth'
+import { type CustomizationOptions, State } from './types'
+
+// PUBLIC API
+export function LoginForm({
+  appearance,
+  logo,
+  socialLayout,
+}: CustomizationOptions) {
+  return (
+    <Auth
+      appearance={appearance}
+      logo={logo}
+      socialLayout={socialLayout}
+      state={State.Login}
+    />
+  )
+}

waspc/examples/todo-typescript/.wasp/out/sdk/wasp/auth/forms/Signup.tsx

@@ -0,0 +1,24 @@
+import Auth from './Auth'
+import {
+  type CustomizationOptions,
+  type AdditionalSignupFields,
+  State,
+} from './types'
+
+// PUBLIC API
+export function SignupForm({
+  appearance,
+  logo,
+  socialLayout,
+  additionalFields,
+}: CustomizationOptions & { additionalFields?: AdditionalSignupFields; }) {
+  return (
+    <Auth
+      appearance={appearance}
+      logo={logo}
+      socialLayout={socialLayout}
+      state={State.Signup}
+      additionalSignupFields={additionalFields}
+    />
+  )
+}

waspc/examples/todo-typescript/.wasp/out/sdk/wasp/auth/forms/internal/Form.tsx

@@ -0,0 +1,102 @@
+import { styled } from 'wasp/core/stitches.config'
+
+// PRIVATE API
+export const Form = styled('form', {
+  marginTop: '1.5rem',
+})
+
+// PUBLIC API
+export const FormItemGroup = styled('div', {
+  '& + div': {
+    marginTop: '1.5rem',
+  },
+})
+
+// PUBLIC API
+export const FormLabel = styled('label', {
+  display: 'block',
+  fontSize: '$sm',
+  fontWeight: '500',
+  marginBottom: '0.5rem',
+})
+
+const commonInputStyles = {
+  display: 'block',
+  lineHeight: '1.5rem',
+  fontSize: '$sm',
+  borderWidth: '1px',
+  borderColor: '$gray600',
+  backgroundColor: '#f8f4ff',
+  boxShadow: '0 1px 2px 0 rgba(0, 0, 0, 0.05)',
+  '&:focus': {
+    borderWidth: '1px',
+    borderColor: '$gray700',
+    boxShadow: '0 1px 2px 0 rgba(0, 0, 0, 0.05)',
+  },
+  '&:disabled': {
+    opacity: 0.5,
+    cursor: 'not-allowed',
+    backgroundColor: '$gray400',
+    borderColor: '$gray400',
+    color: '$gray500',
+  },
+
+  borderRadius: '0.375rem',
+  width: '100%',
+
+  paddingTop: '0.375rem',
+  paddingBottom: '0.375rem',
+  paddingLeft: '0.75rem',
+  paddingRight: '0.75rem',
+  margin: 0,
+}
+
+// PUBLIC API
+export const FormInput = styled('input', commonInputStyles)
+
+// PUBLIC API
+export const FormTextarea = styled('textarea', commonInputStyles)
+
+// PUBLIC API
+export const FormError = styled('div', {
+  display: 'block',
+  fontSize: '$sm',
+  fontWeight: '500',
+  color: '$formErrorText',
+  marginTop: '0.5rem',
+})
+
+// PRIVATE API
+export const SubmitButton = styled('button', {
+  display: 'flex',
+  justifyContent: 'center',
+
+  width: '100%',
+  borderWidth: '1px',
+  borderColor: '$brand',
+  backgroundColor: '$brand',
+  color: '$submitButtonText',
+
+  padding: '0.5rem 0.75rem',
+  boxShadow: '0 1px 2px 0 rgba(0, 0, 0, 0.05)',
+
+  fontWeight: '600',
+  fontSize: '$sm',
+  lineHeight: '1.25rem',
+  borderRadius: '0.375rem',
+
+  // TODO(matija): extract this into separate BaseButton component and then inherit it.
+  '&:hover': {
+    backgroundColor: '$brandAccent',
+    borderColor: '$brandAccent',
+  },
+  '&:disabled': {
+    opacity: 0.5,
+    cursor: 'not-allowed',
+    backgroundColor: '$gray400',
+    borderColor: '$gray400',
+    color: '$gray500',
+  },
+  transitionTimingFunction: 'cubic-bezier(0.4, 0, 0.2, 1)',
+  transitionDuration: '100ms',
+})

waspc/examples/todo-typescript/.wasp/out/sdk/wasp/auth/forms/internal/Message.tsx

@@ -0,0 +1,21 @@
+import { styled } from 'wasp/core/stitches.config'
+
+// PRIVATE API
+export const Message = styled('div', {
+  padding: '0.5rem 0.75rem',
+  borderRadius: '0.375rem',
+  marginTop: '1rem',
+  background: '$gray400',
+})
+
+// PRIVATE API
+export const MessageError = styled(Message, {
+  background: '$errorBackground',
+  color: '$errorText',
+})
+
+// PRIVATE API
+export const MessageSuccess = styled(Message, {
+  background: '$successBackground',
+  color: '$successText',
+})

waspc/examples/todo-typescript/.wasp/out/sdk/wasp/auth/forms/internal/common/LoginSignupForm.tsx

@@ -0,0 +1,184 @@
+import { useContext } from 'react'
+import { useForm, UseFormReturn } from 'react-hook-form'
+import { styled } from 'wasp/core/stitches.config'
+import config from 'wasp/core/config'
+
+import { AuthContext } from '../../Auth'
+import {
+  Form,
+  FormInput,
+  FormItemGroup,
+  FormLabel,
+  FormError,
+  FormTextarea,
+  SubmitButton,
+} from '../Form'
+import type {
+  AdditionalSignupFields,
+  AdditionalSignupField,
+  AdditionalSignupFieldRenderFn,
+  FormState,
+} from '../../types'
+import { useHistory } from 'react-router-dom'
+import { useEmail } from '../email/useEmail'
+
+
+// PRIVATE API
+export type LoginSignupFormFields = {
+  [key: string]: string;
+}
+
+// PRIVATE API
+export const LoginSignupForm = ({
+    state,
+    socialButtonsDirection = 'horizontal',
+    additionalSignupFields,
+}: {
+    state: 'login' | 'signup'
+    socialButtonsDirection?: 'horizontal' | 'vertical'
+    additionalSignupFields?: AdditionalSignupFields
+}) => {
+  const {
+    isLoading,
+    setErrorMessage,
+    setSuccessMessage,
+    setIsLoading,
+  } = useContext(AuthContext)
+  const isLogin = state === 'login'
+  const cta = isLogin ? 'Log in' : 'Sign up';
+  const history = useHistory();
+  const onErrorHandler = (error) => {
+    setErrorMessage({ title: error.message, description: error.data?.data?.message })
+  };
+  const hookForm = useForm<LoginSignupFormFields>()
+  const { register, formState: { errors }, handleSubmit: hookFormHandleSubmit } = hookForm
+  const { handleSubmit } = useEmail({
+    isLogin,
+    onError: onErrorHandler,
+    showEmailVerificationPending() {
+      hookForm.reset()
+      setSuccessMessage(`You've signed up successfully! Check your email for the confirmation link.`)
+    },
+    onLoginSuccess() {
+      history.push('/')
+    },
+  });
+  async function onSubmit (data) {
+    setIsLoading(true);
+    setErrorMessage(null);
+    setSuccessMessage(null);
+    try {
+      await handleSubmit(data);
+    } finally {
+      setIsLoading(false);
+    }
+  }
+
+  return (<>
+        <Form onSubmit={hookFormHandleSubmit(onSubmit)}>
+          <FormItemGroup>
+            <FormLabel>E-mail</FormLabel>
+            <FormInput
+              {...register('email', {
+                required: 'Email is required',
+              })}
+              type="email"
+              disabled={isLoading}
+            />
+            {errors.email && <FormError>{errors.email.message}</FormError>}
+          </FormItemGroup>
+          <FormItemGroup>
+            <FormLabel>Password</FormLabel>
+            <FormInput
+              {...register('password', {
+                required: 'Password is required',
+              })}
+              type="password"
+              disabled={isLoading}
+            />
+            {errors.password && <FormError>{errors.password.message}</FormError>}
+          </FormItemGroup>
+          <AdditionalFormFields
+            hookForm={hookForm}
+            formState={{ isLoading }}
+            additionalSignupFields={additionalSignupFields}
+          />
+          <FormItemGroup>
+            <SubmitButton type="submit" disabled={isLoading}>{cta}</SubmitButton>
+          </FormItemGroup>
+        </Form>
+  </>)
+}
+
+function AdditionalFormFields({
+  hookForm,
+  formState: { isLoading },
+  additionalSignupFields,
+}: {
+  hookForm: UseFormReturn<LoginSignupFormFields>;
+  formState: FormState;
+  additionalSignupFields: AdditionalSignupFields;
+}) {
+  const {
+    register,
+    formState: { errors },
+  } = hookForm;
+
+  function renderField<ComponentType extends React.JSXElementConstructor<any>>(
+    field: AdditionalSignupField,
+    // Ideally we would use ComponentType here, but it doesn't work with react-hook-form
+    Component: any,
+    props?: React.ComponentProps<ComponentType>
+  ) {
+    return (
+      <FormItemGroup key={field.name}>
+        <FormLabel>{field.label}</FormLabel>
+        <Component
+          {...register(field.name, field.validations)}
+          {...props}
+          disabled={isLoading}
+        />
+        {errors[field.name] && (
+          <FormError>{errors[field.name].message}</FormError>
+        )}
+      </FormItemGroup>
+    );
+  }
+
+  if (areAdditionalFieldsRenderFn(additionalSignupFields)) {
+    return additionalSignupFields(hookForm, { isLoading })
+  }
+
+  return (
+    additionalSignupFields &&
+    additionalSignupFields.map((field) => {
+      if (isFieldRenderFn(field)) {
+        return field(hookForm, { isLoading })
+      }
+      switch (field.type) {
+        case 'input':
+          return renderField<typeof FormInput>(field, FormInput, {
+            type: 'text',
+          })
+        case 'textarea':
+          return renderField<typeof FormTextarea>(field, FormTextarea)
+        default:
+          throw new Error(
+            `Unsupported additional signup field type: ${field.type}`
+          )
+      }
+    })
+  )
+}
+
+function isFieldRenderFn(
+  additionalSignupField: AdditionalSignupField | AdditionalSignupFieldRenderFn
+): additionalSignupField is AdditionalSignupFieldRenderFn {
+  return typeof additionalSignupField === 'function'
+}
+
+function areAdditionalFieldsRenderFn(
+  additionalSignupFields: AdditionalSignupFields
+): additionalSignupFields is AdditionalSignupFieldRenderFn {
+  return typeof additionalSignupFields === 'function'
+}

waspc/examples/todo-typescript/.wasp/out/sdk/wasp/auth/forms/types.ts

@@ -0,0 +1,49 @@
+import { createTheme } from '@stitches/react'
+import { UseFormReturn, RegisterOptions } from 'react-hook-form'
+import type { LoginSignupFormFields } from './internal/common/LoginSignupForm'
+
+// PRIVATE API
+export enum State {
+  Login = 'login',
+  Signup = 'signup',
+  ForgotPassword = 'forgot-password',
+  ResetPassword = 'reset-password',
+  VerifyEmail = 'verify-email',
+}
+
+// PUBLIC API
+export type CustomizationOptions = {
+  logo?: string
+  socialLayout?: 'horizontal' | 'vertical'
+  appearance?: Parameters<typeof createTheme>[0]
+}
+
+// PRIVATE API
+export type ErrorMessage = {
+  title: string
+  description?: string
+}
+
+// PRIVATE API
+export type FormState = {
+  isLoading: boolean
+}
+
+// PRIVATE API
+export type AdditionalSignupFieldRenderFn = (
+  hookForm: UseFormReturn<LoginSignupFormFields>,
+  formState: FormState
+) => React.ReactNode
+
+// PRIVATE API
+export type AdditionalSignupField = {
+  name: string
+  label: string
+  type: 'input' | 'textarea'
+  validations?: RegisterOptions<LoginSignupFormFields>
+}
+
+// PRIVATE API
+export type AdditionalSignupFields =
+  | (AdditionalSignupField | AdditionalSignupFieldRenderFn)[]
+  | AdditionalSignupFieldRenderFn

waspc/examples/todo-typescript/.wasp/out/sdk/wasp/package.json

@@ -63,7 +63,8 @@
       "./client/api": "./dist/api/index.js",
       "./auth": "./dist/auth/index.js",
       "./client/auth": "./dist/client/auth/index.js",
-      "./server/auth": "./dist/server/auth/index.js"
+      "./server/auth": "./dist/server/auth/index.js",
+      "./server/crud": "./dist/server/crud/index.js"
    },
    "typesVersions": {
      "*": {

waspc/examples/todo-typescript/src/task/crud.ts

@@ -1,6 +1,6 @@
-import { Task } from "wasp/entities";
-import { GetAllQuery } from "wasp/server/crud/Tasks";
+import { Task } from 'wasp/entities'
+import { Tasks } from 'wasp/server/crud'
 
 export const getAllQuery = ((args, context) => {
-  return context.entities.Task.findMany({});
-}) satisfies GetAllQuery<{}, Task[]>;
+  return context.entities.Task.findMany({})
+}) satisfies Tasks.GetAllQuery<{}, Task[]>

waspc/src/Wasp/Generator/SdkGenerator.hs

@@ -45,6 +45,7 @@ import Wasp.Generator.SdkGenerator.JobGenerator (genJobTypes)
 import Wasp.Generator.SdkGenerator.RouterGenerator (genRouter)
 import Wasp.Generator.SdkGenerator.RpcGenerator (genRpc)
 import Wasp.Generator.SdkGenerator.Server.AuthG (genNewServerApi)
+import Wasp.Generator.SdkGenerator.Server.CrudG (genNewServerCrudApi)
 import Wasp.Generator.SdkGenerator.ServerApiG (genServerApi)
 import Wasp.Generator.SdkGenerator.ServerOpsGenerator (genOperations)
 import Wasp.Generator.SdkGenerator.WebSocketGenerator (depsRequiredByWebSockets, genWebSockets)
@@ -117,6 +118,7 @@ genSdkReal spec =
     -- New API
     <++> genNewClientAuth spec
     <++> genNewServerApi spec
+    <++> genNewServerCrudApi spec
   where
     genFileCopy = return . C.mkTmplFd
 

waspc/src/Wasp/Generator/SdkGenerator/Server/CrudG.hs

@@ -0,0 +1,33 @@
+module Wasp.Generator.SdkGenerator.Server.CrudG
+  ( genNewServerCrudApi,
+  )
+where
+
+import Data.Aeson (object, (.=))
+import qualified Data.Aeson as Aeson
+import StrongPath (relfile)
+import Wasp.AppSpec (AppSpec, getCruds)
+import qualified Wasp.AppSpec.Crud as AS.Crud
+import Wasp.AppSpec.Valid (getIdFieldFromCrudEntity)
+import Wasp.Generator.Crud (getCrudOperationJson)
+import Wasp.Generator.FileDraft (FileDraft)
+import Wasp.Generator.Monad (Generator)
+import qualified Wasp.Generator.SdkGenerator.Common as C
+
+genNewServerCrudApi :: AppSpec -> Generator [FileDraft]
+genNewServerCrudApi spec =
+  if areThereAnyCruds
+    then sequence [genCrudIndex spec cruds]
+    else return []
+  where
+    cruds = getCruds spec
+    areThereAnyCruds = not $ null cruds
+
+genCrudIndex :: AppSpec -> [(String, AS.Crud.Crud)] -> Generator FileDraft
+genCrudIndex spec cruds = return $ C.mkTmplFdWithData [relfile|server/crud/index.ts|] tmplData
+  where
+    tmplData = object ["cruds" .= map getCrudOperationJsonFromCrud cruds]
+    getCrudOperationJsonFromCrud :: (String, AS.Crud.Crud) -> Aeson.Value
+    getCrudOperationJsonFromCrud (name, crud) = getCrudOperationJson name crud idField
+      where
+        idField = getIdFieldFromCrudEntity spec crud

waspc/waspc.cabal

@@ -310,6 +310,7 @@ library
     Wasp.Generator.SdkGenerator.RouterGenerator
     Wasp.Generator.SdkGenerator.Client.AuthG
     Wasp.Generator.SdkGenerator.Server.AuthG
+    Wasp.Generator.SdkGenerator.Server.CrudG
     Wasp.Generator.ServerGenerator
     Wasp.Generator.ServerGenerator.JsImport
     Wasp.Generator.ServerGenerator.ApiRoutesG