"use client";

import { useState, useTransition } from "react";
import { useRouter } from "next/navigation";
import { BookEditIcon } from "@hugeicons/core-free-icons";

import type { CaseTypeValue } from "@/lib/constants";
import { Icon } from "@/components/shared/icon";
import { Button } from "@/components/ui/button";
import {
  Dialog,
  DialogContent,
  DialogDescription,
  DialogFooter,
  DialogHeader,
  DialogTitle,
  DialogTrigger,
} from "@/components/ui/dialog";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from "@/components/ui/select";
import { Textarea } from "@/components/ui/textarea";

type CaseEditDialogProps = {
  customerId: string;
  caseId: string;
  defaultValues: {
    caseName: string;
    type: CaseTypeValue;
    subType?: string | null;
    opponentFullName: string;
    description?: string | null;
  };
};

export function CaseEditDialog({
  customerId,
  caseId,
  defaultValues,
}: CaseEditDialogProps) {
  const router = useRouter();
  const [open, setOpen] = useState(false);
  const [isPending, startTransition] = useTransition();
  const [error, setError] = useState<string | null>(null);
  const [formState, setFormState] = useState({
    caseName: defaultValues.caseName,
    type: defaultValues.type,
    subType: defaultValues.subType ?? "",
    opponentFullName: defaultValues.opponentFullName,
    description: defaultValues.description ?? "",
  });

  function updateField<Key extends keyof typeof formState>(
    key: Key,
    value: (typeof formState)[Key],
  ) {
    setFormState((current) => ({
      ...current,
      [key]: value,
    }));
  }

  function handleSubmit(event: React.FormEvent<HTMLFormElement>) {
    event.preventDefault();
    setError(null);

    startTransition(async () => {
      const response = await fetch(
        `/api/customers/${customerId}/cases/${caseId}`,
        {
          method: "PATCH",
          headers: {
            "Content-Type": "application/json",
          },
          body: JSON.stringify({
            action: "update",
            ...formState,
          }),
        },
      );

      const payload = (await response.json().catch(() => null)) as
        | { message?: string }
        | null;

      if (!response.ok) {
        setError(payload?.message || "تعذر تعديل بيانات القضية.");
        return;
      }

      setOpen(false);
      router.refresh();
    });
  }

  return (
    <Dialog open={open} onOpenChange={setOpen}>
      <DialogTrigger asChild>
        <Button variant="secondary">
          <span>تعديل القضية</span>
          <Icon icon={BookEditIcon} size={18} />
        </Button>
      </DialogTrigger>
      <DialogContent>
        <DialogHeader>
          <DialogTitle>تعديل بيانات القضية</DialogTitle>
          <DialogDescription>
            حدّث نوع القضية أو بيانات الخصم أو الوصف المختصر وقت ما تحتاج.
          </DialogDescription>
        </DialogHeader>

        <form className="space-y-4" onSubmit={handleSubmit}>
          <div className="space-y-2">
            <Label htmlFor="edit-case-name">اسم القضية</Label>
            <Input
              id="edit-case-name"
              value={formState.caseName}
              onChange={(event) => updateField("caseName", event.target.value)}
              required
            />
          </div>

          <div className="space-y-2">
            <Label>نوع القضية</Label>
            <Select
              value={formState.type}
              onValueChange={(value) => updateField("type", value as CaseTypeValue)}
            >
              <SelectTrigger>
                <SelectValue />
              </SelectTrigger>
              <SelectContent>
                <SelectItem value="CIVIL">مدنيه</SelectItem>
                <SelectItem value="CRIMINAL">جنائيه</SelectItem>
                <SelectItem value="PERSONAL_STATUS">أحوال</SelectItem>
              </SelectContent>
            </Select>
          </div>

          <div className="space-y-2">
            <Label htmlFor="edit-case-subType">النوع الفرعي</Label>
            <Input
              id="edit-case-subType"
              value={formState.subType}
              onChange={(event) => updateField("subType", event.target.value)}
            />
          </div>

          <div className="space-y-2">
            <Label htmlFor="edit-case-opponent">اسم الخصم بالكامل</Label>
            <Input
              id="edit-case-opponent"
              value={formState.opponentFullName}
              onChange={(event) =>
                updateField("opponentFullName", event.target.value)
              }
              required
            />
          </div>

          <div className="space-y-2">
            <Label htmlFor="edit-case-description">وصف مختصر</Label>
            <Textarea
              id="edit-case-description"
              value={formState.description}
              onChange={(event) => updateField("description", event.target.value)}
            />
          </div>

          {error ? (
            <p className="rounded-2xl bg-[color:rgba(185,28,28,0.08)] px-4 py-3 text-sm font-medium text-[var(--destructive)]">
              {error}
            </p>
          ) : null}

          <DialogFooter>
            <Button type="button" variant="outline" onClick={() => setOpen(false)}>
              إلغاء
            </Button>
            <Button type="submit" disabled={isPending}>
              {isPending ? "جارٍ الحفظ..." : "حفظ التعديلات"}
            </Button>
          </DialogFooter>
        </form>
      </DialogContent>
    </Dialog>
  );
}