import type { Metadata } from "next";
import Link from "next/link";
import { headers as nextHeaders } from "next/headers";
import { redirect } from "next/navigation";
import { getPayload } from "payload";
import config from "@payload-config";
import {
  ArrowRightIcon,
  CheckCircle2Icon,
  Clock3Icon,
  EyeOffIcon,
  MicIcon,
  SparklesIcon,
  TriangleAlertIcon,
} from "lucide-react";

import { Badge } from "@/components/ui/badge";
import { Button } from "@/components/ui/button";
import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
import { listScriptsForUser, type VoiceoverScriptView } from "@/lib/voiceover";
import { cn } from "@/lib/utils";
import { redactText } from "@/lib/redaction";
import { isPayloadUser } from "@/utils/access-control/isPayloadUser";

export const metadata: Metadata = {
  title: "Voiceover: Polaris Task Force",
  description: "Record voiceover takes for active Polaris Task Force scripts.",
};

const submissionStatusClasses: Record<string, string> = {
  pending: "border-amber-500/40 text-amber-400",
  accepted: "border-emerald-500/40 text-emerald-400",
  rejected: "border-red-500/40 text-red-400",
};

function ScriptAvailability({ status }: { readonly status: string }) {
  const isDraft = status === "draft";
  const isOpen = status === "open";

  return (
    <Badge
      variant="outline"
      className={cn(
        "shrink-0 gap-1",
        isOpen && "border-emerald-500/40 text-emerald-400",
        isDraft && "border-violet-500/50 text-violet-300",
        !isOpen && !isDraft && "text-muted-foreground",
      )}
    >
      {isDraft ? (
        <EyeOffIcon className="size-3" />
      ) : isOpen ? (
        <CheckCircle2Icon className="size-3" />
      ) : (
        <Clock3Icon className="size-3" />
      )}
      {isDraft ? "Draft" : isOpen ? "Open" : "Closed"}
    </Badge>
  );
}

function SubmissionStatuses({ script }: { readonly script: VoiceoverScriptView }) {
  if (script.mySubmissions.length === 0) {
    return <p className="text-xs text-muted-foreground">No takes submitted yet.</p>;
  }

  return (
    <div className="flex flex-wrap items-center gap-2" aria-label="Your take statuses">
      {script.mySubmissions.map((submission, index) => (
        <Badge
          key={submission.id}
          variant="outline"
          className={cn(
            "font-normal capitalize",
            submissionStatusClasses[submission.status] ?? "text-muted-foreground",
          )}
        >
          Take {index + 1}: {submission.status}
        </Badge>
      ))}
    </div>
  );
}

function SpoilerBadge() {
  return (
    <Badge variant="outline" className="gap-1 border-amber-500/40 text-amber-300">
      <TriangleAlertIcon className="size-3" />
      Spoilers
    </Badge>
  );
}

function ScriptCard({ script }: { readonly script: VoiceoverScriptView }) {
  const isDraft = script.status === "draft";
  const isOpen = script.status === "open";
  const isRecordable = isOpen;

  return (
    <Card
      className={cn(
        "flex h-full flex-col",
        isDraft && "border-dashed border-violet-500/50",
        !isOpen && !isDraft && "opacity-75",
      )}
    >
      <CardHeader className="gap-3">
        <div className="flex items-start justify-between gap-3">
          <div className="flex min-w-0 flex-col gap-2">
            <CardTitle className="min-w-0">
              {isRecordable || isDraft ? (
                <Link
                  href={`/voiceover/${script.id}`}
                  className="rounded-sm outline-none transition-colors hover:text-primary focus-visible:ring-2 focus-visible:ring-ring"
                >
                  {script.title}
                </Link>
              ) : (
                script.title
              )}
            </CardTitle>
            <CardDescription>
              {(script.spoiler ? redactText(script.description) : script.description)?.trim() ||
                `Voiceover script #${script.id}`}
            </CardDescription>
          </div>
          <div className="flex shrink-0 flex-wrap items-center justify-end gap-2">
            {script.spoiler && <SpoilerBadge />}
            <ScriptAvailability status={script.status} />
          </div>
        </div>

        <div className="flex flex-wrap items-center gap-2">
          <Badge variant="outline" className="gap-1 border-amber-500/40 text-amber-300">
            <SparklesIcon className="size-3" />+{script.xpAmount} XP
          </Badge>
          <span className="text-xs text-muted-foreground">
            {script.otherSubmissionCount} other submission
            {script.otherSubmissionCount === 1 ? "" : "s"}
          </span>
        </div>
      </CardHeader>

      <CardContent className="flex flex-1 flex-col gap-4">
        <div className="flex flex-col gap-2">
          <span className="text-xs font-medium uppercase tracking-wider text-muted-foreground">
            Your submissions
          </span>
          <SubmissionStatuses script={script} />
        </div>

        {isDraft ? (
          <p className="mt-auto text-sm text-violet-300/90">
            Draft preview: this script is still hidden from other users.
          </p>
        ) : isRecordable ? (
          <Button asChild className="mt-auto w-full sm:w-fit">
            <Link href={`/voiceover/${script.id}`}>
              <MicIcon data-icon="inline-start" />
              Record a take
              <ArrowRightIcon data-icon="inline-end" />
            </Link>
          </Button>
        ) : (
          <p className="mt-auto text-sm text-muted-foreground">
            This script is closed to new takes.
          </p>
        )}
      </CardContent>
    </Card>
  );
}

export default async function VoiceoverPage() {
  const headers = await nextHeaders();
  const payloadConfig = await config;
  const payload = await getPayload({ config: payloadConfig });
  const { user } = await payload.auth({ headers, canSetHeaders: false });

  if (!isPayloadUser(user)) {
    redirect(`/login?returnTo=${encodeURIComponent("/voiceover")}`);
  }

  const scripts = await listScriptsForUser(payload, user);

  return (
    <div className="flex min-w-0 flex-col gap-6 p-5">
      <div className="flex flex-col gap-1">
        <div className="flex items-center gap-2">
          <MicIcon className="size-5 text-muted-foreground" />
          <h1 className="text-lg font-semibold">Voiceover submissions</h1>
        </div>
        <p className="text-sm text-muted-foreground">
          Choose an active script, read it in the teleprompter, and submit your best take.
        </p>
      </div>

      {scripts.length > 0 ? (
        <div className="grid min-w-0 gap-4 xl:grid-cols-2">
          {scripts.map((script) => (
            <ScriptCard key={script.id} script={script} />
          ))}
        </div>
      ) : (
        <Card>
          <CardContent className="flex flex-col items-center gap-3 p-8 text-center">
            <MicIcon className="size-8 text-muted-foreground" />
            <div className="flex flex-col gap-1">
              <h2 className="font-semibold">No scripts available</h2>
              <p className="text-sm text-muted-foreground">
                New voiceover opportunities will appear here when they are published.
              </p>
            </div>
          </CardContent>
        </Card>
      )}
    </div>
  );
}