import Link from "next/link"
import { notFound } from "next/navigation"

import { CopyInviteButton } from "@/components/admin/copy-invite-button"
import { DeleteInvitationDialog } from "@/components/admin/delete-invitation-dialog"
import { Alert, AlertDescription, AlertTitle } from "@/components/ui/alert"
import { Badge } from "@/components/ui/badge"
import { Button } from "@/components/ui/button"
import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card"
import {
  Table,
  TableBody,
  TableCell,
  TableHead,
  TableHeader,
  TableRow,
} from "@/components/ui/table"
import {
  getInvitationInteractions,
  updateToastRequestStatus,
} from "@/lib/db/queries/interactions"
import { getInvitationDetail } from "@/lib/db/queries/invitations"
import { getPhotoUploadByInvitationId } from "@/lib/db/queries/uploads"
import { getLanguageLabel } from "@/lib/i18n/config"
import { createPresignedDownloadUrl } from "@/lib/storage/uploads"
import { toastStatusSchema } from "@/lib/validation/interactions"

export const dynamic = "force-dynamic"

function getInviteUrl(token: string) {
  return new URL(`/invite/${token}`, process.env.APP_URL ?? "http://localhost:3000").toString()
}

function formatDate(date: Date | null | undefined) {
  if (!date) return "—"

  return new Intl.DateTimeFormat("en", {
    dateStyle: "medium",
    timeStyle: "short",
  }).format(date)
}

function formatBoolean(value: boolean | null) {
  if (value === true) return "Yes"
  if (value === false) return "No"
  return "Pending"
}

function formatDateOnly(value: Date | string | null | undefined) {
  if (!value) return "—"

  if (value instanceof Date) {
    return new Intl.DateTimeFormat("en", { dateStyle: "medium" }).format(value)
  }

  return value
}

async function updateToastStatusAction(formData: FormData) {
  "use server"

  const toastId = formData.get("toastId")?.toString()
  const status = toastStatusSchema.safeParse(formData.get("status"))

  if (!toastId || !status.success) return

  await updateToastRequestStatus(toastId, status.data)
}

export default async function GuestDetailPage({
  params,
  searchParams,
}: {
  params: Promise<{ id: string }>
  searchParams: Promise<{ created?: string }>
}) {
  const [{ id }, { created }] = await Promise.all([params, searchParams])
  const [detail, interactions, photoUpload] = await Promise.all([
    getInvitationDetail(id),
    getInvitationInteractions(id),
    getPhotoUploadByInvitationId(id),
  ])

  if (!detail) notFound()

  const inviteUrl = getInviteUrl(detail.invitation.token)
  const photoUrl = photoUpload ? await createPresignedDownloadUrl(photoUpload.object_key) : null

  return (
    <div className="space-y-6">
      <div className="flex flex-col gap-4 sm:flex-row sm:items-end sm:justify-between">
        <div>
          <div className="mb-2 flex items-center gap-2">
            <Badge>{detail.derivedStatus}</Badge>
            <Badge variant="secondary">{getLanguageLabel(detail.invitation.language)}</Badge>
          </div>
          <h1 className="text-3xl font-semibold tracking-tight">
            {detail.invitation.display_name}
          </h1>
          <p className="text-muted-foreground">Invitation details and member list.</p>
        </div>
        <div className="flex flex-wrap gap-2">
          <Button asChild variant="outline">
            <Link href="/admin/guests">Back to list</Link>
          </Button>
          <CopyInviteButton inviteUrl={inviteUrl} />
          <DeleteInvitationDialog
            invitationId={detail.invitation.id}
            displayName={detail.invitation.display_name}
          />
        </div>
      </div>

      {created ? (
        <Alert>
          <AlertTitle>Invitation created</AlertTitle>
          <AlertDescription>
            Copy the private invite link below and share it only with this invitation group.
          </AlertDescription>
        </Alert>
      ) : null}

      <div className="grid gap-6 lg:grid-cols-[1fr_360px]">
        <Card>
          <CardHeader>
            <CardTitle>Invite link</CardTitle>
            <CardDescription>Private URL for this invitation group.</CardDescription>
          </CardHeader>
          <CardContent className="flex flex-col gap-3 sm:flex-row sm:items-center">
            <code className="flex-1 overflow-x-auto rounded-md bg-muted px-3 py-2 text-sm">
              {inviteUrl}
            </code>
            <CopyInviteButton inviteUrl={inviteUrl} />
          </CardContent>
        </Card>

        <Card>
          <CardHeader>
            <CardTitle>Metadata</CardTitle>
            <CardDescription>Admin-managed invitation fields.</CardDescription>
          </CardHeader>
          <CardContent className="space-y-3 text-sm">
            <div className="flex justify-between gap-4">
              <span className="text-muted-foreground">Contact email</span>
              <span className="text-right">{detail.invitation.contact_email ?? "—"}</span>
            </div>
            <div className="flex justify-between gap-4">
              <span className="text-muted-foreground">Contact phone</span>
              <span className="text-right">{detail.invitation.contact_phone ?? "—"}</span>
            </div>
            <div className="flex justify-between gap-4">
              <span className="text-muted-foreground">Max party size</span>
              <span>{detail.invitation.max_party_size}</span>
            </div>
            <div className="flex justify-between gap-4">
              <span className="text-muted-foreground">Member edits</span>
              <span>{detail.invitation.allow_member_edits ? "Allowed" : "Disabled"}</span>
            </div>
            <div className="flex justify-between gap-4">
              <span className="text-muted-foreground">Updated</span>
              <span className="text-right">{formatDate(detail.invitation.updated_at)}</span>
            </div>
          </CardContent>
        </Card>
      </div>

      <Card>
        <CardHeader>
          <CardTitle>Members</CardTitle>
          <CardDescription>
            Individual attendance and meal details from the guest RSVP.
          </CardDescription>
        </CardHeader>
        <CardContent>
          <Table>
            <TableHeader>
              <TableRow>
                <TableHead>Name</TableHead>
                <TableHead>Primary</TableHead>
                <TableHead>Attending</TableHead>
                <TableHead>Meal</TableHead>
                <TableHead>Dietary restrictions</TableHead>
              </TableRow>
            </TableHeader>
            <TableBody>
              {detail.members.map((member) => (
                <TableRow key={member.id}>
                  <TableCell className="font-medium">{member.name}</TableCell>
                  <TableCell>{member.is_primary_contact ? "Yes" : "No"}</TableCell>
                  <TableCell>{formatBoolean(member.attending)}</TableCell>
                  <TableCell>{member.meal_preference ?? "—"}</TableCell>
                  <TableCell>{member.dietary_restrictions ?? "—"}</TableCell>
                </TableRow>
              ))}
            </TableBody>
          </Table>
        </CardContent>
      </Card>

      <Card>
        <CardHeader>
          <CardTitle>Travel and RSVP details</CardTitle>
          <CardDescription>Group-level logistics submitted by the invitation group.</CardDescription>
        </CardHeader>
        <CardContent>
          {detail.response ? (
            <div className="grid gap-4 text-sm md:grid-cols-2">
              <div className="rounded-lg border p-4">
                <p className="text-muted-foreground">Submitted</p>
                <p className="mt-1 font-medium">{formatDate(detail.response.submitted_at)}</p>
              </div>
              <div className="rounded-lg border p-4">
                <p className="text-muted-foreground">Needs transport help</p>
                <p className="mt-1 font-medium">
                  {formatBoolean(detail.response.needs_transport_help)}
                </p>
              </div>
              <div className="rounded-lg border p-4">
                <p className="text-muted-foreground">Arrival date</p>
                <p className="mt-1 font-medium">{formatDateOnly(detail.response.arrival_date)}</p>
              </div>
              <div className="rounded-lg border p-4">
                <p className="text-muted-foreground">Departure date</p>
                <p className="mt-1 font-medium">{formatDateOnly(detail.response.departure_date)}</p>
              </div>
              <div className="rounded-lg border p-4">
                <p className="text-muted-foreground">Staying at</p>
                <p className="mt-1 font-medium">{detail.response.stay_location ?? "—"}</p>
              </div>
              <div className="rounded-lg border p-4 md:col-span-2">
                <p className="text-muted-foreground">Message to the couple</p>
                <p className="mt-1 whitespace-pre-wrap font-medium">
                  {detail.response.message_to_couple ?? "—"}
                </p>
              </div>
            </div>
          ) : (
            <p className="text-sm text-muted-foreground">No RSVP response submitted yet.</p>
          )}
        </CardContent>
      </Card>

      <Card>
        <CardHeader>
          <CardTitle>Admin notes</CardTitle>
        </CardHeader>
        <CardContent>
          <p className="whitespace-pre-wrap text-sm text-muted-foreground">
            {detail.invitation.notes ?? "No notes yet."}
          </p>
        </CardContent>
      </Card>

      <Card>
        <CardHeader>
          <CardTitle>Wedding surprise photo</CardTitle>
          <CardDescription>One image uploaded by this invitation group.</CardDescription>
        </CardHeader>
        <CardContent>
          {photoUpload && photoUrl ? (
            <div className="grid gap-4 lg:grid-cols-[280px_1fr]">
              <div className="overflow-hidden rounded-lg border bg-muted">
                {/* eslint-disable-next-line @next/next/no-img-element */}
                <img
                  src={photoUrl}
                  alt={photoUpload.original_filename ?? "Uploaded wedding activity photo"}
                  className="aspect-square w-full object-cover"
                />
              </div>
              <div className="space-y-3 text-sm">
                <div className="rounded-lg border p-4">
                  <p className="text-muted-foreground">Filename</p>
                  <p className="mt-1 font-medium">{photoUpload.original_filename ?? "—"}</p>
                </div>
                <div className="rounded-lg border p-4">
                  <p className="text-muted-foreground">Content type</p>
                  <p className="mt-1 font-medium">{photoUpload.content_type ?? "—"}</p>
                </div>
                <div className="rounded-lg border p-4">
                  <p className="text-muted-foreground">Size</p>
                  <p className="mt-1 font-medium">
                    {photoUpload.size_bytes
                      ? `${(photoUpload.size_bytes / 1024 / 1024).toFixed(2)} MB`
                      : "—"}
                  </p>
                </div>
                <Button asChild variant="outline">
                  <a href={photoUrl} target="_blank" rel="noreferrer">
                    Open signed preview
                  </a>
                </Button>
              </div>
            </div>
          ) : (
            <p className="text-sm text-muted-foreground">No photo uploaded yet.</p>
          )}
        </CardContent>
      </Card>

      <Card>
        <CardHeader>
          <CardTitle>Toast requests</CardTitle>
          <CardDescription>Optional speech requests. Status is managed by admins.</CardDescription>
        </CardHeader>
        <CardContent>
          {interactions.toastRequests.length > 0 ? (
            <div className="space-y-4">
              {interactions.toastRequests.map((toast) => (
                <div className="rounded-lg border p-4" key={toast.id}>
                  <div className="flex flex-col gap-3 sm:flex-row sm:items-start sm:justify-between">
                    <div className="space-y-1">
                      <div className="flex items-center gap-2">
                        <p className="font-medium">{toast.speaker_name}</p>
                        <Badge variant="secondary">{toast.status}</Badge>
                      </div>
                      <p className="text-sm text-muted-foreground">
                        Estimated time: {toast.estimated_minutes ?? "—"} minutes
                      </p>
                    </div>
                    <div className="flex flex-wrap gap-2">
                      {(["pending", "accepted", "declined", "scheduled"] as const).map(
                        (status) => (
                          <form action={updateToastStatusAction} key={status}>
                            <input type="hidden" name="toastId" value={toast.id} />
                            <input type="hidden" name="status" value={status} />
                            <Button
                              type="submit"
                              size="sm"
                              variant={toast.status === status ? "default" : "outline"}
                            >
                              {status}
                            </Button>
                          </form>
                        ),
                      )}
                    </div>
                  </div>
                </div>
              ))}
            </div>
          ) : (
            <p className="text-sm text-muted-foreground">No toast requests submitted yet.</p>
          )}
        </CardContent>
      </Card>

    </div>
  )
}