Apply linen design system across app

src/app/dashboard/kalender/_components/termin-request-modal.tsx

@@ -1,6 +1,7 @@
 "use client";
 
-import { useState, useTransition } from "react";
+import type { ComponentProps, FormEvent } from "react";
+import { useMemo, useState, useTransition } from "react";
 import { TerminType } from "@prisma/client";
 import { CalendarPlus } from "lucide-react";
 import { toast } from "sonner";
@@ -19,17 +20,74 @@ import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
 import { createTerminRequest } from "../actions";
 
-export function TerminRequestModal() {
-  const [open, setOpen] = useState(false);
-  const [isPending, startTransition] = useTransition();
+type TerminRequestFormState = {
+  title: string;
+  type: TerminType;
+  startDate: string;
+  endDate: string;
+  allDay: boolean;
+};
+
+const initialFormState: TerminRequestFormState = {
+  title: "",
+  type: TerminType.KITA_FEST,
+  startDate: "",
+  endDate: "",
+  allDay: false,
+};
+
+type TerminRequestModalProps = {
+  triggerLabel?: string;
+  triggerVariant?: ComponentProps<typeof Button>["variant"];
+  triggerClassName?: string;
+};
+
+export function TerminRequestModal({
+  triggerLabel = "Termin anfragen",
+  triggerVariant = "ghost",
+  triggerClassName = "gap-2",
+}: TerminRequestModalProps) {
+  const [open, setOpen] = useState(false);
+  const [formState, setFormState] = useState<TerminRequestFormState>(initialFormState);
+  const [isPending, startTransition] = useTransition();
+  const minDateTime = useMemo(() => getLocalDateTimeInputValue(new Date()), []);
+  const minEndDateTime = formState.startDate || minDateTime;
+
+  const updateField = <TKey extends keyof TerminRequestFormState>(
+    key: TKey,
+    value: TerminRequestFormState[TKey],
+  ) => {
+    setFormState((current) => {
+      const next = { ...current, [key]: value };
+      if (key === "startDate" && typeof value === "string" && next.endDate && next.endDate < value) {
+        next.endDate = value;
+      }
+      return next;
+    });
+  };
+
+  const handleSubmit = (event: FormEvent<HTMLFormElement>) => {
+    event.preventDefault();
+
+    if (!formState.startDate || !formState.endDate) {
+      toast.error("Bitte Start und Ende ausfüllen.");
+      return;
+    }
+    if (formState.startDate < minDateTime) {
+      toast.error("Der Startzeitpunkt darf nicht in der Vergangenheit liegen.");
+      return;
+    }
+    if (formState.endDate < formState.startDate) {
+      toast.error("Das Ende darf nicht vor dem Start liegen.");
+      return;
+    }
 
-  const handleAction = (formData: FormData) => {
     const data = {
-      title: formData.get("title") as string,
-      type: formData.get("type") as TerminType,
-      startDate: new Date(formData.get("startDate") as string).toISOString(),
-      endDate: new Date(formData.get("endDate") as string).toISOString(),
-      allDay: formData.get("allDay") === "on",
+      title: formState.title,
+      type: formState.type,
+      startDate: new Date(formState.startDate).toISOString(),
+      endDate: new Date(formState.endDate).toISOString(),
+      allDay: formState.allDay,
     };
 
     startTransition(async () => {
@@ -38,6 +96,7 @@ export function TerminRequestModal() {
         toast.error(res.error);
       } else {
         toast.success("Terminanfrage wurde erfolgreich gestellt!");
+        setFormState(initialFormState);
         setOpen(false);
       }
     });
@@ -46,13 +105,13 @@ export function TerminRequestModal() {
   return (
     <Dialog open={open} onOpenChange={setOpen}>
       <DialogTrigger asChild>
-        <Button variant="outline" className="gap-2">
-          <CalendarPlus className="h-4 w-4" />
-          Termin anfragen
+        <Button variant={triggerVariant} className={triggerClassName}>
+          <CalendarPlus className="h-4 w-4 [stroke-width:1.7]" />
+          {triggerLabel}
         </Button>
       </DialogTrigger>
       <DialogContent>
-        <form action={handleAction}>
+        <form onSubmit={handleSubmit}>
           <DialogHeader>
             <DialogTitle>Termin anfragen</DialogTitle>
             <DialogDescription>
@@ -64,7 +123,14 @@ export function TerminRequestModal() {
           <div className="grid gap-4 py-4">
             <div className="grid gap-2">
               <Label htmlFor="title">Titel</Label>
-              <Input id="title" name="title" required placeholder="z.B. Geburtstag von Mia" />
+              <Input
+                id="title"
+                name="title"
+                required
+                placeholder="z.B. Geburtstag von Mia"
+                value={formState.title}
+                onChange={(event) => updateField("title", event.target.value)}
+              />
             </div>
 
             <div className="grid gap-2">
@@ -72,7 +138,9 @@ export function TerminRequestModal() {
               <select
                 id="type"
                 name="type"
-                className="flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50"
+                value={formState.type}
+                className="flex h-10 w-full rounded-lg border border-[var(--hairline)] bg-[var(--surface)] px-3 py-2 text-[13.5px] text-[var(--ink)] ring-offset-[var(--surface)] transition-colors hover:border-[var(--accent-mid)] focus-visible:border-[var(--accent)] focus-visible:outline-none focus-visible:ring-[3px] focus-visible:ring-[var(--focus-ring)] disabled:cursor-not-allowed disabled:opacity-50"
+                onChange={(event) => updateField("type", event.target.value as TerminType)}
                 required
               >
                 <option value={TerminType.KITA_FEST}>Kita-Fest</option>
@@ -91,16 +159,39 @@ export function TerminRequestModal() {
             <div className="grid grid-cols-2 gap-4">
               <div className="grid gap-2">
                 <Label htmlFor="startDate">Start</Label>
-                <Input id="startDate" name="startDate" type="datetime-local" required />
+                <Input
+                  id="startDate"
+                  name="startDate"
+                  type="datetime-local"
+                  min={minDateTime}
+                  value={formState.startDate}
+                  onChange={(event) => updateField("startDate", event.target.value)}
+                  required
+                />
               </div>
               <div className="grid gap-2">
                 <Label htmlFor="endDate">Ende</Label>
-                <Input id="endDate" name="endDate" type="datetime-local" required />
+                <Input
+                  id="endDate"
+                  name="endDate"
+                  type="datetime-local"
+                  min={minEndDateTime}
+                  value={formState.endDate}
+                  onChange={(event) => updateField("endDate", event.target.value)}
+                  required
+                />
               </div>
             </div>
 
             <div className="flex items-center gap-2 mt-2">
-              <input type="checkbox" id="allDay" name="allDay" className="rounded border-gray-300" />
+              <input
+                type="checkbox"
+                id="allDay"
+                name="allDay"
+                checked={formState.allDay}
+                className="rounded border-[var(--hairline)] accent-[var(--accent-deep)]"
+                onChange={(event) => updateField("allDay", event.target.checked)}
+              />
               <Label htmlFor="allDay" className="font-normal cursor-pointer">
                 Ganztägiger Termin
               </Label>
@@ -120,3 +211,10 @@ export function TerminRequestModal() {
     </Dialog>
   );
 }
+
+function getLocalDateTimeInputValue(date: Date) {
+  const localDate = new Date(date);
+  localDate.setSeconds(0, 0);
+  const offset = localDate.getTimezoneOffset() * 60_000;
+  return new Date(localDate.getTime() - offset).toISOString().slice(0, 16);
+}