7 files changed, 513 insertions, 41 deletions
diff --git a/src/app/groups/[groupId]/expenses/active-user-modal.tsx b/src/app/groups/[groupId]/expenses/active-user-modal.tsx
new file mode 100644
index 0000000..5d9d005
--- /dev/null
+++ b/src/app/groups/[groupId]/expenses/active-user-modal.tsx
@@ -0,0 +1,134 @@
+'use client'
+
+import { Button } from '@/components/ui/button'
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog'
+import {
+  Drawer,
+  DrawerContent,
+  DrawerDescription,
+  DrawerFooter,
+  DrawerHeader,
+  DrawerTitle,
+} from '@/components/ui/drawer'
+import { Label } from '@/components/ui/label'
+import { RadioGroup, RadioGroupItem } from '@/components/ui/radio-group'
+import { getGroup } from '@/lib/api'
+import { useMediaQuery } from '@/lib/hooks'
+import { cn } from '@/lib/utils'
+import { ComponentProps, useEffect, useState } from 'react'
+
+type Props = {
+  group: NonNullable<Awaited<ReturnType<typeof getGroup>>>
+}
+
+export function ActiveUserModal({ group }: Props) {
+  const [open, setOpen] = useState(false)
+  const isDesktop = useMediaQuery('(min-width: 768px)')
+
+  useEffect(() => {
+    const tempUser = localStorage.getItem(`newGroup-activeUser`)
+    const activeUser = localStorage.getItem(`${group.id}-activeUser`)
+    if (!tempUser && !activeUser) {
+      setOpen(true)
+    }
+  }, [group])
+
+  function updateOpen(open: boolean) {
+    if (!open && !localStorage.getItem(`${group.id}-activeUser`)) {
+      localStorage.setItem(`${group.id}-activeUser`, 'None')
+    }
+    setOpen(open)
+  }
+
+  if (isDesktop) {
+    return (
+      <Dialog open={open} onOpenChange={updateOpen}>
+        <DialogContent className="sm:max-w-[425px]">
+          <DialogHeader>
+            <DialogTitle>Who are you?</DialogTitle>
+            <DialogDescription>
+              Tell us which participant you are to let us customize how the
+              information is displayed.
+            </DialogDescription>
+          </DialogHeader>
+          <ActiveUserForm group={group} close={() => setOpen(false)} />
+          <DialogFooter className="sm:justify-center">
+            <p className="text-sm text-center text-muted-foreground">
+              This setting can be changed later in the group settings.
+            </p>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
+    )
+  }
+
+  return (
+    <Drawer open={open} onOpenChange={updateOpen}>
+      <DrawerContent>
+        <DrawerHeader className="text-left">
+          <DrawerTitle>Who are you?</DrawerTitle>
+          <DrawerDescription>
+            Tell us which participant you are to let us customize how the
+            information is displayed.
+          </DrawerDescription>
+        </DrawerHeader>
+        <ActiveUserForm
+          className="px-4"
+          group={group}
+          close={() => setOpen(false)}
+        />
+        <DrawerFooter className="pt-2">
+          <p className="text-sm text-center text-muted-foreground">
+            This setting can be changed later in the group settings.
+          </p>
+        </DrawerFooter>
+      </DrawerContent>
+    </Drawer>
+  )
+}
+
+function ActiveUserForm({
+  group,
+  close,
+  className,
+}: ComponentProps<'form'> & { group: Props['group']; close: () => void }) {
+  const [selected, setSelected] = useState('None')
+
+  return (
+    <form
+      className={cn('grid items-start gap-4', className)}
+      onSubmit={(event) => {
+        event.preventDefault()
+        localStorage.setItem(`${group.id}-activeUser`, selected)
+        close()
+      }}
+    >
+      <RadioGroup defaultValue="none" onValueChange={setSelected}>
+        <div className="flex flex-col gap-4 my-4">
+          <div className="flex items-center space-x-2">
+            <RadioGroupItem value="none" id="none" />
+            <Label htmlFor="none" className="italic font-normal flex-1">
+              I don’t want to select anyone
+            </Label>
+          </div>
+          {group.participants.map((participant) => (
+            <div key={participant.id} className="flex items-center space-x-2">
+              <RadioGroupItem value={participant.id} id={participant.id} />
+              <Label htmlFor={participant.id} className="flex-1">
+                {participant.name}
+              </Label>
+            </div>
+          ))}
+        </div>
+      </RadioGroup>
+      <Button type="submit">Save changes</Button>
+    </form>
+  )
+}
diff --git a/src/app/groups/[groupId]/expenses/expense-list.tsx b/src/app/groups/[groupId]/expenses/expense-list.tsx
index ef4903c..4578300 100644
--- a/src/app/groups/[groupId]/expenses/expense-list.tsx
+++ b/src/app/groups/[groupId]/expenses/expense-list.tsx
@@ -27,11 +27,15 @@ export function ExpenseList({
     if (activeUser || newUser) {
       localStorage.removeItem('newGroup-activeUser')
       localStorage.removeItem(`${groupId}-newUser`)
-      const userId = participants.find(
-        (p) => p.name === (activeUser || newUser),
-      )?.id
-      if (userId) {
-        localStorage.setItem(`${groupId}-activeUser`, userId)
+      if (activeUser === 'None') {
+        localStorage.setItem(`${groupId}-activeUser`, 'None')
+      } else {
+        const userId = participants.find(
+          (p) => p.name === (activeUser || newUser),
+        )?.id
+        if (userId) {
+          localStorage.setItem(`${groupId}-activeUser`, userId)
+        }
       }
     }
   }, [groupId, participants])
diff --git a/src/app/groups/[groupId]/expenses/page.tsx b/src/app/groups/[groupId]/expenses/page.tsx
index 5285cb8..2a1ac5f 100644
--- a/src/app/groups/[groupId]/expenses/page.tsx
+++ b/src/app/groups/[groupId]/expenses/page.tsx
@@ -1,3 +1,4 @@
+import { ActiveUserModal } from '@/app/groups/[groupId]/expenses/active-user-modal'
 import { ExpenseList } from '@/app/groups/[groupId]/expenses/expense-list'
 import { Button } from '@/components/ui/button'
 import {
@@ -24,45 +25,52 @@ export default async function GroupExpensesPage({
 }: {
   params: { groupId: string }
 }) {
+  const group = await getGroup(groupId)
+  if (!group) notFound()
+
   return (
-    <Card className="mb-4">
-      <div className="flex flex-1">
-        <CardHeader className="flex-1">
-          <CardTitle>Expenses</CardTitle>
-          <CardDescription>
-            Here are the expenses that you created for your group.
-          </CardDescription>
-        </CardHeader>
-        <CardHeader>
-          <Button asChild size="icon">
-            <Link href={`/groups/${groupId}/expenses/create`}>
-              <Plus />
-            </Link>
-          </Button>
-        </CardHeader>
-      </div>
+    <>
+      <Card className="mb-4">
+        <div className="flex flex-1">
+          <CardHeader className="flex-1">
+            <CardTitle>Expenses</CardTitle>
+            <CardDescription>
+              Here are the expenses that you created for your group.
+            </CardDescription>
+          </CardHeader>
+          <CardHeader>
+            <Button asChild size="icon">
+              <Link href={`/groups/${groupId}/expenses/create`}>
+                <Plus />
+              </Link>
+            </Button>
+          </CardHeader>
+        </div>
 
-      <CardContent className="p-0">
-        <Suspense
-          fallback={[0, 1, 2].map((i) => (
-            <div
-              key={i}
-              className="border-t flex justify-between items-center px-6 py-4 text-sm"
-            >
-              <div className="flex flex-col gap-2">
-                <Skeleton className="h-4 w-16 rounded-full" />
-                <Skeleton className="h-4 w-32 rounded-full" />
+        <CardContent className="p-0">
+          <Suspense
+            fallback={[0, 1, 2].map((i) => (
+              <div
+                key={i}
+                className="border-t flex justify-between items-center px-6 py-4 text-sm"
+              >
+                <div className="flex flex-col gap-2">
+                  <Skeleton className="h-4 w-16 rounded-full" />
+                  <Skeleton className="h-4 w-32 rounded-full" />
+                </div>
+                <div>
+                  <Skeleton className="h-4 w-16 rounded-full" />
+                </div>
               </div>
-              <div>
-                <Skeleton className="h-4 w-16 rounded-full" />
-              </div>
-            </div>
-          ))}
-        >
-          <Expenses groupId={groupId} />
-        </Suspense>
-      </CardContent>
-    </Card>
+            ))}
+          >
+            <Expenses groupId={groupId} />
+          </Suspense>
+        </CardContent>
+      </Card>
+
+      <ActiveUserModal group={group} />
+    </>
   )
 }
 
diff --git a/src/components/ui/dialog.tsx b/src/components/ui/dialog.tsx
new file mode 100644
index 0000000..01ff19c
--- /dev/null
+++ b/src/components/ui/dialog.tsx
@@ -0,0 +1,122 @@
+"use client"
+
+import * as React from "react"
+import * as DialogPrimitive from "@radix-ui/react-dialog"
+import { X } from "lucide-react"
+
+import { cn } from "@/lib/utils"
+
+const Dialog = DialogPrimitive.Root
+
+const DialogTrigger = DialogPrimitive.Trigger
+
+const DialogPortal = DialogPrimitive.Portal
+
+const DialogClose = DialogPrimitive.Close
+
+const DialogOverlay = React.forwardRef<
+  React.ElementRef<typeof DialogPrimitive.Overlay>,
+  React.ComponentPropsWithoutRef<typeof DialogPrimitive.Overlay>
+>(({ className, ...props }, ref) => (
+  <DialogPrimitive.Overlay
+    ref={ref}
+    className={cn(
+      "fixed inset-0 z-50 bg-black/80  data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0",
+      className
+    )}
+    {...props}
+  />
+))
+DialogOverlay.displayName = DialogPrimitive.Overlay.displayName
+
+const DialogContent = React.forwardRef<
+  React.ElementRef<typeof DialogPrimitive.Content>,
+  React.ComponentPropsWithoutRef<typeof DialogPrimitive.Content>
+>(({ className, children, ...props }, ref) => (
+  <DialogPortal>
+    <DialogOverlay />
+    <DialogPrimitive.Content
+      ref={ref}
+      className={cn(
+        "fixed left-[50%] top-[50%] z-50 grid w-full max-w-lg translate-x-[-50%] translate-y-[-50%] gap-4 border bg-background p-6 shadow-lg duration-200 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=closed]:slide-out-to-top-[48%] data-[state=open]:slide-in-from-left-1/2 data-[state=open]:slide-in-from-top-[48%] sm:rounded-lg",
+        className
+      )}
+      {...props}
+    >
+      {children}
+      <DialogPrimitive.Close className="absolute right-4 top-4 rounded-sm opacity-70 ring-offset-background transition-opacity hover:opacity-100 focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2 disabled:pointer-events-none data-[state=open]:bg-accent data-[state=open]:text-muted-foreground">
+        <X className="h-4 w-4" />
+        <span className="sr-only">Close</span>
+      </DialogPrimitive.Close>
+    </DialogPrimitive.Content>
+  </DialogPortal>
+))
+DialogContent.displayName = DialogPrimitive.Content.displayName
+
+const DialogHeader = ({
+  className,
+  ...props
+}: React.HTMLAttributes<HTMLDivElement>) => (
+  <div
+    className={cn(
+      "flex flex-col space-y-1.5 text-center sm:text-left",
+      className
+    )}
+    {...props}
+  />
+)
+DialogHeader.displayName = "DialogHeader"
+
+const DialogFooter = ({
+  className,
+  ...props
+}: React.HTMLAttributes<HTMLDivElement>) => (
+  <div
+    className={cn(
+      "flex flex-col-reverse sm:flex-row sm:justify-end sm:space-x-2",
+      className
+    )}
+    {...props}
+  />
+)
+DialogFooter.displayName = "DialogFooter"
+
+const DialogTitle = React.forwardRef<
+  React.ElementRef<typeof DialogPrimitive.Title>,
+  React.ComponentPropsWithoutRef<typeof DialogPrimitive.Title>
+>(({ className, ...props }, ref) => (
+  <DialogPrimitive.Title
+    ref={ref}
+    className={cn(
+      "text-lg font-semibold leading-none tracking-tight",
+      className
+    )}
+    {...props}
+  />
+))
+DialogTitle.displayName = DialogPrimitive.Title.displayName
+
+const DialogDescription = React.forwardRef<
+  React.ElementRef<typeof DialogPrimitive.Description>,
+  React.ComponentPropsWithoutRef<typeof DialogPrimitive.Description>
+>(({ className, ...props }, ref) => (
+  <DialogPrimitive.Description
+    ref={ref}
+    className={cn("text-sm text-muted-foreground", className)}
+    {...props}
+  />
+))
+DialogDescription.displayName = DialogPrimitive.Description.displayName
+
+export {
+  Dialog,
+  DialogPortal,
+  DialogOverlay,
+  DialogClose,
+  DialogTrigger,
+  DialogContent,
+  DialogHeader,
+  DialogFooter,
+  DialogTitle,
+  DialogDescription,
+}
diff --git a/src/components/ui/drawer.tsx b/src/components/ui/drawer.tsx
new file mode 100644
index 0000000..6a0ef53
--- /dev/null
+++ b/src/components/ui/drawer.tsx
@@ -0,0 +1,118 @@
+"use client"
+
+import * as React from "react"
+import { Drawer as DrawerPrimitive } from "vaul"
+
+import { cn } from "@/lib/utils"
+
+const Drawer = ({
+  shouldScaleBackground = true,
+  ...props
+}: React.ComponentProps<typeof DrawerPrimitive.Root>) => (
+  <DrawerPrimitive.Root
+    shouldScaleBackground={shouldScaleBackground}
+    {...props}
+  />
+)
+Drawer.displayName = "Drawer"
+
+const DrawerTrigger = DrawerPrimitive.Trigger
+
+const DrawerPortal = DrawerPrimitive.Portal
+
+const DrawerClose = DrawerPrimitive.Close
+
+const DrawerOverlay = React.forwardRef<
+  React.ElementRef<typeof DrawerPrimitive.Overlay>,
+  React.ComponentPropsWithoutRef<typeof DrawerPrimitive.Overlay>
+>(({ className, ...props }, ref) => (
+  <DrawerPrimitive.Overlay
+    ref={ref}
+    className={cn("fixed inset-0 z-50 bg-black/80", className)}
+    {...props}
+  />
+))
+DrawerOverlay.displayName = DrawerPrimitive.Overlay.displayName
+
+const DrawerContent = React.forwardRef<
+  React.ElementRef<typeof DrawerPrimitive.Content>,
+  React.ComponentPropsWithoutRef<typeof DrawerPrimitive.Content>
+>(({ className, children, ...props }, ref) => (
+  <DrawerPortal>
+    <DrawerOverlay />
+    <DrawerPrimitive.Content
+      ref={ref}
+      className={cn(
+        "fixed inset-x-0 bottom-0 z-50 mt-24 flex h-auto flex-col rounded-t-[10px] border bg-background",
+        className
+      )}
+      {...props}
+    >
+      <div className="mx-auto mt-4 h-2 w-[100px] rounded-full bg-muted" />
+      {children}
+    </DrawerPrimitive.Content>
+  </DrawerPortal>
+))
+DrawerContent.displayName = "DrawerContent"
+
+const DrawerHeader = ({
+  className,
+  ...props
+}: React.HTMLAttributes<HTMLDivElement>) => (
+  <div
+    className={cn("grid gap-1.5 p-4 text-center sm:text-left", className)}
+    {...props}
+  />
+)
+DrawerHeader.displayName = "DrawerHeader"
+
+const DrawerFooter = ({
+  className,
+  ...props
+}: React.HTMLAttributes<HTMLDivElement>) => (
+  <div
+    className={cn("mt-auto flex flex-col gap-2 p-4", className)}
+    {...props}
+  />
+)
+DrawerFooter.displayName = "DrawerFooter"
+
+const DrawerTitle = React.forwardRef<
+  React.ElementRef<typeof DrawerPrimitive.Title>,
+  React.ComponentPropsWithoutRef<typeof DrawerPrimitive.Title>
+>(({ className, ...props }, ref) => (
+  <DrawerPrimitive.Title
+    ref={ref}
+    className={cn(
+      "text-lg font-semibold leading-none tracking-tight",
+      className
+    )}
+    {...props}
+  />
+))
+DrawerTitle.displayName = DrawerPrimitive.Title.displayName
+
+const DrawerDescription = React.forwardRef<
+  React.ElementRef<typeof DrawerPrimitive.Description>,
+  React.ComponentPropsWithoutRef<typeof DrawerPrimitive.Description>
+>(({ className, ...props }, ref) => (
+  <DrawerPrimitive.Description
+    ref={ref}
+    className={cn("text-sm text-muted-foreground", className)}
+    {...props}
+  />
+))
+DrawerDescription.displayName = DrawerPrimitive.Description.displayName
+
+export {
+  Drawer,
+  DrawerPortal,
+  DrawerOverlay,
+  DrawerTrigger,
+  DrawerClose,
+  DrawerContent,
+  DrawerHeader,
+  DrawerFooter,
+  DrawerTitle,
+  DrawerDescription,
+}
diff --git a/src/components/ui/radio-group.tsx b/src/components/ui/radio-group.tsx
new file mode 100644
index 0000000..e9bde17
--- /dev/null
+++ b/src/components/ui/radio-group.tsx
@@ -0,0 +1,44 @@
+"use client"
+
+import * as React from "react"
+import * as RadioGroupPrimitive from "@radix-ui/react-radio-group"
+import { Circle } from "lucide-react"
+
+import { cn } from "@/lib/utils"
+
+const RadioGroup = React.forwardRef<
+  React.ElementRef<typeof RadioGroupPrimitive.Root>,
+  React.ComponentPropsWithoutRef<typeof RadioGroupPrimitive.Root>
+>(({ className, ...props }, ref) => {
+  return (
+    <RadioGroupPrimitive.Root
+      className={cn("grid gap-2", className)}
+      {...props}
+      ref={ref}
+    />
+  )
+})
+RadioGroup.displayName = RadioGroupPrimitive.Root.displayName
+
+const RadioGroupItem = React.forwardRef<
+  React.ElementRef<typeof RadioGroupPrimitive.Item>,
+  React.ComponentPropsWithoutRef<typeof RadioGroupPrimitive.Item>
+>(({ className, ...props }, ref) => {
+  return (
+    <RadioGroupPrimitive.Item
+      ref={ref}
+      className={cn(
+        "aspect-square h-4 w-4 rounded-full border border-primary text-primary ring-offset-background focus:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50",
+        className
+      )}
+      {...props}
+    >
+      <RadioGroupPrimitive.Indicator className="flex items-center justify-center">
+        <Circle className="h-2.5 w-2.5 fill-current text-current" />
+      </RadioGroupPrimitive.Indicator>
+    </RadioGroupPrimitive.Item>
+  )
+})
+RadioGroupItem.displayName = RadioGroupPrimitive.Item.displayName
+
+export { RadioGroup, RadioGroupItem }
diff --git a/src/lib/hooks.ts b/src/lib/hooks.ts
new file mode 100644
index 0000000..02e2543
--- /dev/null
+++ b/src/lib/hooks.ts
@@ -0,0 +1,42 @@
+import { useEffect, useState } from 'react'
+
+export function useMediaQuery(query: string): boolean {
+  const getMatches = (query: string): boolean => {
+    // Prevents SSR issues
+    if (typeof window !== 'undefined') {
+      return window.matchMedia(query).matches
+    }
+    return false
+  }
+
+  const [matches, setMatches] = useState<boolean>(getMatches(query))
+
+  function handleChange() {
+    setMatches(getMatches(query))
+  }
+
+  useEffect(() => {
+    const matchMedia = window.matchMedia(query)
+
+    // Triggered at the first client-side load and if query changes
+    handleChange()
+
+    // Listen matchMedia
+    if (matchMedia.addListener) {
+      matchMedia.addListener(handleChange)
+    } else {
+      matchMedia.addEventListener('change', handleChange)
+    }
+
+    return () => {
+      if (matchMedia.removeListener) {
+        matchMedia.removeListener(handleChange)
+      } else {
+        matchMedia.removeEventListener('change', handleChange)
+      }
+    }
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [query])
+
+  return matches
+}