feat: 使用 zod 合约实现类型安全的 todo 服务

- 添加 @orpc/contract 依赖以支持合约定义和类型安全。
- 添加 @orpc/contract 依赖以支持契约定义和类型安全。
- 更新客户端类型定义并移除冗余的 APIRouterClient 引入，确保客户端实例类型与路由定义一致。
- 添加基于 zod 的类型安全接口定义，包含待办事项的增删改查操作契约及对应的输入输出验证规则。
- 使用合约定义重构 Todo 处理函数，统一接口输入输出验证并移除冗余的 Zod 模式定义。
- 更新导出模块，将路由功能改为导出合约定义。
- 移除未使用的导入和类型定义，精简路由配置文件。

src/orpc/client.ts

@@ -1,10 +1,10 @@
 import { createORPCClient } from '@orpc/client'
 import { RPCLink } from '@orpc/client/fetch'
-import { createRouterClient } from '@orpc/server'
+import { createRouterClient, type RouterClient } from '@orpc/server'
 import { createTanstackQueryUtils } from '@orpc/tanstack-query'
 import { createIsomorphicFn } from '@tanstack/react-start'
 import { getRequestHeaders } from '@tanstack/react-start/server'
-import { type APIRouterClient, router } from '@/orpc'
+import { router } from './router'
 
 const getORPCClient = createIsomorphicFn()
   .server(() =>
@@ -14,13 +14,13 @@ const getORPCClient = createIsomorphicFn()
       }),
     }),
   )
-  .client(() => {
+  .client((): RouterClient<typeof router> => {
     const link = new RPCLink({
       url: `${window.location.origin}/api/rpc`,
     })
-    return createORPCClient<APIRouterClient>(link)
+    return createORPCClient(link)
   })
 
-const client: APIRouterClient = getORPCClient()
+const client: RouterClient<typeof router> = getORPCClient()
 
 export const orpc = createTanstackQueryUtils(client)

src/orpc/contract.ts

@@ -0,0 +1,49 @@
+import { oc } from '@orpc/contract'
+import { z } from 'zod'
+
+export const todoSchema = z.object({
+  id: z.uuid(),
+  title: z.string(),
+  completed: z.boolean(),
+  createdAt: z.date(),
+  updatedAt: z.date(),
+})
+
+export const todoInsertSchema = z.object({
+  title: z.string().min(1),
+  completed: z.boolean().optional(),
+})
+
+export const todoUpdateSchema = z.object({
+  title: z.string().min(1).optional(),
+  completed: z.boolean().optional(),
+})
+
+export const todoContract = {
+  list: oc.input(z.void()).output(z.array(todoSchema)),
+
+  create: oc.input(todoInsertSchema).output(todoSchema),
+
+  update: oc
+    .input(
+      z.object({
+        id: z.uuid(),
+        data: todoUpdateSchema,
+      }),
+    )
+    .output(todoSchema),
+
+  remove: oc
+    .input(
+      z.object({
+        id: z.uuid(),
+      }),
+    )
+    .output(z.void()),
+}
+
+export const contract = {
+  todo: todoContract,
+}
+
+export type Contract = typeof contract

src/orpc/handlers/todo.ts

@@ -1,31 +1,10 @@
-import { ORPCError, os } from '@orpc/server'
+import { implement, ORPCError } from '@orpc/server'
 import { eq } from 'drizzle-orm'
-import {
-  createInsertSchema,
-  createSelectSchema,
-  createUpdateSchema,
-} from 'drizzle-zod'
-import { z } from 'zod'
 import { todoTable } from '@/db/schema'
+import { todoContract } from '@/orpc/contract'
 import { dbProvider } from '@/orpc/middlewares'
 
-const selectSchema = createSelectSchema(todoTable)
-
-const insertSchema = createInsertSchema(todoTable).omit({
-  id: true,
-  createdAt: true,
-  updatedAt: true,
-})
-
-const updateSchema = createUpdateSchema(todoTable).omit({
-  id: true,
-  createdAt: true,
-  updatedAt: true,
-})
-
-export const list = os
-  .input(z.void())
-  .output(z.array(selectSchema))
+export const list = implement(todoContract.list)
   .use(dbProvider)
   .handler(async ({ context }) => {
     const todos = await context.db.query.todoTable.findMany({
@@ -34,9 +13,7 @@ export const list = os
     return todos
   })
 
-export const create = os
-  .input(insertSchema)
-  .output(selectSchema)
+export const create = implement(todoContract.create)
   .use(dbProvider)
   .handler(async ({ context, input }) => {
     const [newTodo] = await context.db
@@ -51,14 +28,7 @@ export const create = os
     return newTodo
   })
 
-export const update = os
-  .input(
-    z.object({
-      id: z.uuid(),
-      data: updateSchema,
-    }),
-  )
-  .output(selectSchema)
+export const update = implement(todoContract.update)
   .use(dbProvider)
   .handler(async ({ context, input }) => {
     const [updatedTodo] = await context.db
@@ -74,13 +44,7 @@ export const update = os
     return updatedTodo
   })
 
-export const remove = os
-  .input(
-    z.object({
-      id: z.uuid(),
-    }),
-  )
-  .output(z.void())
+export const remove = implement(todoContract.remove)
   .use(dbProvider)
   .handler(async ({ context, input }) => {
     await context.db.delete(todoTable).where(eq(todoTable.id, input.id))

src/orpc/index.ts

@@ -1,2 +1,2 @@
 export * from './client'
-export * from './router'
+export * from './contract'

src/orpc/router.ts

@@ -1,8 +1,5 @@
-import type { RouterClient } from '@orpc/server'
 import * as todo from './handlers/todo'
 
 export const router = {
   todo,
 }
-
-export type APIRouterClient = RouterClient<typeof router>