4 files changed, 136 insertions, 0 deletions
diff --git a/src/app/groups/[groupId]/@modal/default.tsx b/src/app/groups/[groupId]/@modal/default.tsx
new file mode 100644
index 0000000..86b9e9a
--- /dev/null
+++ b/src/app/groups/[groupId]/@modal/default.tsx
@@ -0,0 +1,3 @@
+export default function Default() {
+  return null
+}
diff --git a/src/app/groups/[groupId]/@modal/expense-modal.tsx b/src/app/groups/[groupId]/@modal/expense-modal.tsx
new file mode 100644
index 0000000..17bb302
--- /dev/null
+++ b/src/app/groups/[groupId]/@modal/expense-modal.tsx
@@ -0,0 +1,83 @@
+'use client'
+import {
+  Dialog,
+  DialogContent,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog'
+import { useRouter } from 'next/navigation'
+import { ReactNode, useEffect, useState } from 'react'
+import { Drawer } from 'vaul'
+
+type Props = {
+  children: ReactNode
+  title: ReactNode
+}
+
+export function ExpenseModal(props: Props) {
+  const size = useTailwindBreakpoint()
+  if (size === 'xs') {
+    return <ExpenseVaul {...props} />
+  } else {
+    return <ExpenseDialog {...props} />
+  }
+}
+
+export function ExpenseDialog({ children, title }: Props) {
+  const router = useRouter()
+
+  return (
+    <Dialog open onOpenChange={() => router.back()}>
+      <DialogContent className="w-full max-w-screen-sm">
+        <DialogHeader>
+          <DialogTitle>{title}</DialogTitle>
+        </DialogHeader>
+        {children}
+      </DialogContent>
+    </Dialog>
+  )
+}
+
+export function ExpenseVaul({ children, title }: Props) {
+  const router = useRouter()
+  return (
+    <Drawer.Root open onClose={() => router.back()}>
+      <Drawer.Portal>
+        <Drawer.Title>{title}</Drawer.Title>
+        <Drawer.Overlay className="fixed inset-0 bg-background/80 backdrop-blur-sm" />
+        <Drawer.Content className="bg-background border flex flex-col rounded-t-[10px] max-h-[90dvh] mt-24 fixed bottom-0 left-0 right-0 z-50">
+          <div className="mx-auto w-12 h-1.5 flex-shrink-0 rounded-full bg-gray-300 dark:bg-gray-700 mt-4"></div>
+          <div className="text-xl font-bold p-4">{title}</div>
+          <div className="flex-1 overflow-y-auto p-4 pt-0">{children}</div>
+        </Drawer.Content>
+      </Drawer.Portal>
+    </Drawer.Root>
+  )
+}
+
+export function useTailwindBreakpoint() {
+  const [size, setSize] = useState<'xs' | 'sm' | 'md' | 'lg'>('xs')
+
+  useEffect(() => {
+    const handleBreakpointChange = () => {
+      if (window.innerWidth >= 1200) {
+        setSize('lg')
+      } else if (window.innerWidth >= 768) {
+        setSize('md')
+      } else if (window.innerWidth >= 640) {
+        setSize('sm')
+      } else {
+        setSize('xs')
+      }
+    }
+
+    window.addEventListener('resize', handleBreakpointChange)
+    handleBreakpointChange()
+
+    return () => {
+      window.removeEventListener('resize', handleBreakpointChange)
+    }
+  }, [])
+
+  return size
+}
diff --git a/src/app/groups/[groupId]/@modal/expenses/[expenseId]/edit/page.tsx b/src/app/groups/[groupId]/@modal/expenses/[expenseId]/edit/page.tsx
new file mode 100644
index 0000000..fb70f45
--- /dev/null
+++ b/src/app/groups/[groupId]/@modal/expenses/[expenseId]/edit/page.tsx
@@ -0,0 +1,26 @@
+import { ExpenseModal } from '@/app/groups/[groupId]/@modal/expense-modal'
+import { ExpenseForm } from '@/components/expense-form'
+import { getExpense, getGroup } from '@/lib/api'
+import { Metadata } from 'next'
+import { notFound } from 'next/navigation'
+
+export const metadata: Metadata = {
+  title: 'Edit expense',
+}
+
+export default async function EditExpensePage({
+  params: { groupId, expenseId },
+}: {
+  params: { groupId: string; expenseId: string }
+}) {
+  const group = await getGroup(groupId)
+  if (!group) notFound()
+  const expense = await getExpense(groupId, expenseId)
+  if (!expense) notFound()
+
+  return (
+    <ExpenseModal title="Edit expense">
+      <ExpenseForm group={group} expense={expense} />
+    </ExpenseModal>
+  )
+}
diff --git a/src/app/groups/[groupId]/@modal/expenses/create/page.tsx b/src/app/groups/[groupId]/@modal/expenses/create/page.tsx
new file mode 100644
index 0000000..93cc413
--- /dev/null
+++ b/src/app/groups/[groupId]/@modal/expenses/create/page.tsx
@@ -0,0 +1,24 @@
+import { ExpenseModal } from '@/app/groups/[groupId]/@modal/expense-modal'
+import { ExpenseForm } from '@/components/expense-form'
+import { getGroup } from '@/lib/api'
+import { Metadata } from 'next'
+import { notFound } from 'next/navigation'
+
+export const metadata: Metadata = {
+  title: 'Create expense',
+}
+
+export default async function ExpensePage({
+  params: { groupId },
+}: {
+  params: { groupId: string }
+}) {
+  const group = await getGroup(groupId)
+  if (!group) notFound()
+
+  return (
+    <ExpenseModal title="Create expense">
+      <ExpenseForm group={group} />
+    </ExpenseModal>
+  )
+}