import { db } from "@/db";
import Link from "next/link";
import { Button } from "@/components/ui/button";
import {
  Table,
  TableBody,
  TableCell,
  TableHead,
  TableHeader,
  TableRow,
} from "@/components/ui/table";
import { Badge } from "@/components/ui/badge";
import { Plus } from "lucide-react";
import { DeleteFormButton } from "@/components/delete-buttons";
import { AdminShellServer } from "@/components/admin-shell-server";
import { createDefaultForm } from "./actions";
import { RealtimeRefresh } from "@/components/realtime-refresh";
import { getFormSubmissionStats } from "@/lib/form/form-submission-stats";
import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
import { isFormAcceptingSubmissions } from "@/lib/form/form-availability";

export const dynamic = "force-dynamic";

export default async function AdminFormsPage() {
  const formsList = await db.query.forms.findMany({
    orderBy: (f, { desc }) => [desc(f.createdAt)],
  });
  const submissionStats = await getFormSubmissionStats(
    formsList.map((form) => form.id),
    null
  );

  return (
    <AdminShellServer>
      <RealtimeRefresh topic="forms" />
      <div className="flex w-full flex-col gap-6 p-4 pb-12 md:p-6">
        <div className="flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between">
          <div>
            <h1 className="text-3xl font-bold tracking-tight">Forms</h1>
            <p className="text-muted-foreground mt-1">
              Manage your custom forms and view submissions.
            </p>
          </div>
          <form action={createDefaultForm}>
            <Button type="submit">
              <Plus data-icon="inline-start" />
              Create form
            </Button>
          </form>
        </div>

        <div className="hidden rounded-md border md:block">
          <Table>
            <TableHeader>
              <TableRow>
                <TableHead>Title</TableHead>
                <TableHead>Status</TableHead>
                <TableHead>Responses</TableHead>
                <TableHead>Created</TableHead>
                <TableHead className="text-right">Actions</TableHead>
              </TableRow>
            </TableHeader>
            <TableBody>
              {formsList.length === 0 ? (
                <TableRow>
                  <TableCell colSpan={5} className="h-24 text-center text-muted-foreground">
                    No forms found. Create one to get started.
                  </TableCell>
                </TableRow>
              ) : (
                formsList.map((form) => {
                  const isAccepting = isFormAcceptingSubmissions(form);
                  return (
                  <TableRow key={form.id} className="group hover:bg-muted/50 transition-colors">
                    <TableCell className="p-0 align-middle">
                      <Link href={`/admin/form/${form.id}`} className="flex items-center p-3 font-medium h-full w-full">
                        {form.title}
                      </Link>
                    </TableCell>
                    <TableCell className="p-0 align-middle">
                      <Link href={`/admin/form/${form.id}`} className="flex items-center p-3 h-full w-full">
                        {isAccepting ? (
                          <Badge variant="default">Open</Badge>
                        ) : (
                          <Badge variant="secondary">Closed</Badge>
                        )}
                      </Link>
                    </TableCell>
                    <TableCell className="p-0 align-middle">
                      <Link href={`/admin/form/${form.id}/result`} className="flex items-center p-3 h-full w-full">
                        {submissionStats.get(form.id)?.totalAnswers ?? 0}
                      </Link>
                    </TableCell>
                    <TableCell className="p-0 align-middle">
                      <Link href={`/admin/form/${form.id}`} className="flex items-center p-3 h-full w-full">
                        {form.createdAt
                          ? new Date(form.createdAt).toLocaleDateString("en-GB", {
                              timeZone: "Asia/Bangkok",
                            })
                          : "N/A"}
                      </Link>
                    </TableCell>
                    <TableCell className="p-3 text-right">
                      <div className="flex justify-end gap-2">
                        <Button variant="outline" asChild size="sm">
                          <Link href={`/admin/form/${form.id}/result`}>Responses</Link>
                        </Button>
                        <DeleteFormButton formId={form.id} />
                      </div>
                    </TableCell>
                  </TableRow>
                  );
                })
              )}
            </TableBody>
          </Table>
        </div>
        <div className="flex flex-col gap-3 md:hidden">
          {formsList.map((form) => {
            const isAccepting = isFormAcceptingSubmissions(form);
            return (
            <Card key={form.id}>
              <CardHeader>
                <div className="flex items-start justify-between gap-3">
                  <CardTitle className="text-base">
                    <Link href={`/admin/form/${form.id}`}>{form.title}</Link>
                  </CardTitle>
                  <Badge variant={isAccepting ? "default" : "secondary"}>
                    {isAccepting ? "Open" : "Closed"}
                  </Badge>
                </div>
              </CardHeader>
              <CardContent className="flex items-center justify-between gap-3">
                <Link
                  href={`/admin/form/${form.id}/result`}
                  className="text-sm text-muted-foreground"
                >
                  {submissionStats.get(form.id)?.totalAnswers ?? 0} responses
                </Link>
                <DeleteFormButton formId={form.id} />
              </CardContent>
            </Card>
            );
          })}
          {formsList.length === 0 && (
            <Card>
              <CardHeader>
                <CardTitle className="text-base">No forms yet</CardTitle>
              </CardHeader>
              <CardContent className="text-sm text-muted-foreground">
                Create a form to start collecting responses.
              </CardContent>
            </Card>
          )}
        </div>
      </div>
    </AdminShellServer>
  );
}