Add todo example, remove yarn, change schema structure, update readme

apps/cli/template/examples/todo/packages/client/src/routes/todos.tsx

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+import { Button } from "@/components/ui/button";
+import {
+  Card,
+  CardContent,
+  CardDescription,
+  CardHeader,
+  CardTitle,
+} from "@/components/ui/card";
+import { Checkbox } from "@/components/ui/checkbox";
+import { Input } from "@/components/ui/input";
+import { trpc } from "@/utils/trpc";
+import { createFileRoute } from "@tanstack/react-router";
+import { Loader2, Trash2 } from "lucide-react";
+import { useState } from "react";
+
+export const Route = createFileRoute("/todos")({
+  component: TodosRoute,
+});
+
+function TodosRoute() {
+  const [newTodoText, setNewTodoText] = useState("");
+
+  const todos = trpc.todo.getAll.useQuery();
+  const createMutation = trpc.todo.create.useMutation({
+    onSuccess: () => {
+      todos.refetch();
+      setNewTodoText("");
+    },
+  });
+  const toggleMutation = trpc.todo.toggle.useMutation({
+    onSuccess: () => todos.refetch(),
+  });
+  const deleteMutation = trpc.todo.delete.useMutation({
+    onSuccess: () => todos.refetch(),
+  });
+
+  const handleAddTodo = (e: React.FormEvent) => {
+    e.preventDefault();
+    if (newTodoText.trim()) {
+      createMutation.mutate({ text: newTodoText });
+    }
+  };
+
+  const handleToggleTodo = (id: number, completed: boolean) => {
+    toggleMutation.mutate({ id, completed: !completed });
+  };
+
+  const handleDeleteTodo = (id: number) => {
+    deleteMutation.mutate({ id });
+  };
+
+  return (
+    <div className="container mx-auto max-w-md py-10">
+      <Card>
+        <CardHeader>
+          <CardTitle>Todo List</CardTitle>
+          <CardDescription>Manage your tasks efficiently</CardDescription>
+        </CardHeader>
+        <CardContent>
+          <form
+            onSubmit={handleAddTodo}
+            className="mb-6 flex items-center space-x-2"
+          >
+            <Input
+              value={newTodoText}
+              onChange={(e) => setNewTodoText(e.target.value)}
+              placeholder="Add a new task..."
+              disabled={createMutation.isPending}
+            />
+            <Button
+              type="submit"
+              disabled={createMutation.isPending || !newTodoText.trim()}
+            >
+              {createMutation.isPending ? (
+                <Loader2 className="h-4 w-4 animate-spin" />
+              ) : (
+                "Add"
+              )}
+            </Button>
+          </form>
+
+          {todos.isLoading ? (
+            <div className="flex justify-center py-4">
+              <Loader2 className="h-6 w-6 animate-spin" />
+            </div>
+          ) : todos.data?.length === 0 ? (
+            <p className="py-4 text-center text-muted-foreground">
+              No todos yet. Add one above!
+            </p>
+          ) : (
+            <ul className="space-y-2">
+              {todos.data?.map((todo) => (
+                <li
+                  key={todo.id}
+                  className="flex items-center justify-between rounded-md border p-2"
+                >
+                  <div className="flex items-center space-x-2">
+                    <Checkbox
+                      checked={todo.completed}
+                      onCheckedChange={() =>
+                        handleToggleTodo(todo.id, todo.completed)
+                      }
+                      id={`todo-${todo.id}`}
+                    />
+                    <label
+                      htmlFor={`todo-${todo.id}`}
+                      className={`${todo.completed ? "text-muted-foreground line-through" : ""}`}
+                    >
+                      {todo.text}
+                    </label>
+                  </div>
+                  <Button
+                    variant="ghost"
+                    size="icon"
+                    onClick={() => handleDeleteTodo(todo.id)}
+                    aria-label="Delete todo"
+                  >
+                    <Trash2 className="h-4 w-4" />
+                  </Button>
+                </li>
+              ))}
+            </ul>
+          )}
+        </CardContent>
+      </Card>
+    </div>
+  );
+}

apps/cli/template/examples/todo/packages/server/src/routers/with-drizzle-todo.ts

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+import { z } from "zod";
+import { router, publicProcedure } from "../lib/trpc";
+import { todo } from "../db/schema/todo";
+import { eq } from "drizzle-orm";
+import { db } from "../db";
+
+export const todoRouter = router({
+  getAll: publicProcedure.query(async () => {
+    return await db.select().from(todo).all();
+  }),
+
+  create: publicProcedure
+    .input(z.object({ text: z.string().min(1) }))
+    .mutation(async ({ input }) => {
+      return await db
+        .insert(todo)
+        .values({
+          text: input.text,
+        })
+        .returning()
+        .get();
+    }),
+
+  toggle: publicProcedure
+    .input(z.object({ id: z.number(), completed: z.boolean() }))
+    .mutation(async ({ input }) => {
+      return await db
+        .update(todo)
+        .set({ completed: input.completed })
+        .where(eq(todo.id, input.id))
+        .returning()
+        .get();
+    }),
+
+  delete: publicProcedure
+    .input(z.object({ id: z.number() }))
+    .mutation(async ({ input }) => {
+      return await db
+        .delete(todo)
+        .where(eq(todo.id, input.id))
+        .returning()
+        .get();
+    }),
+});

apps/cli/template/examples/todo/packages/server/src/routers/with-prisma-todo.ts

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+import { TRPCError } from "@trpc/server";
+import { z } from "zod";
+import prisma from "../../prisma";
+import { publicProcedure, router } from "../lib/trpc";
+
+export const todoRouter = router({
+  getAll: publicProcedure.query(async () => {
+    return await prisma.todo.findMany({
+      orderBy: {
+        id: "asc"
+      }
+    });
+  }),
+
+  create: publicProcedure
+    .input(z.object({ text: z.string().min(1) }))
+    .mutation(async ({ input }) => {
+      return await prisma.todo.create({
+        data: {
+          text: input.text,
+        },
+      });
+    }),
+
+  toggle: publicProcedure
+    .input(z.object({ id: z.number(), completed: z.boolean() }))
+    .mutation(async ({ input }) => {
+      try {
+        return await prisma.todo.update({
+          where: { id: input.id },
+          data: { completed: input.completed },
+        });
+      } catch (error) {
+        throw new TRPCError({
+          code: "NOT_FOUND",
+          message: "Todo not found",
+        });
+      }
+    }),
+
+  delete: publicProcedure
+    .input(z.object({ id: z.number() }))
+    .mutation(async ({ input }) => {
+      try {
+        return await prisma.todo.delete({
+          where: { id: input.id },
+        });
+      } catch (error) {
+        throw new TRPCError({
+          code: "NOT_FOUND",
+          message: "Todo not found",
+        });
+      }
+    }),
+});