"use client";

import { useMemo } from "react";

import { useQuery } from "convex/react";
import type { Id } from "@/convex/_generated/dataModel";
import { api } from "@/convex/_generated/api";
import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
import { Badge } from "@/components/ui/badge";
import { Globe } from "lucide-react";

type UsedSkill = {
  name: string;
  purpose?: string;
  category?: string;
  source?: string;
  version?: string;
};

type LeadContext = {
  _id: Id<"leads">;
  companyName?: string;
  websiteDomain?: string;
  websiteUrl?: string;
  city?: string;
  niche?: string;
};

type SkillAwareAudit = {
  _id: Id<"audits">;
  slug: string;
  checkedDomain: string;
  status: "draft" | "approved" | "published" | "deactivated";
  checkedPages: string[];
  createdAt?: number;
  updatedAt?: number;
  usedSkills?: UsedSkill[];
  internalSummary?: string | null;
};

type AuditDetailResult = {
  audit: SkillAwareAudit;
  lead: LeadContext | null;
} | null;

const statusText: Record<string, string> = {
  draft: "Entwurf",
  approved: "Freigegeben",
  published: "Veröffentlicht",
  deactivated: "Deaktiviert",
};

function getStatusLabel(status: SkillAwareAudit["status"]) {
  return statusText[status] ?? "Unbekannt";
}

function leadSummary(lead: LeadContext | null | undefined) {
  if (!lead) {
    return "Kein Lead-Kontext gespeichert";
  }

  const detail = [lead.city, lead.niche].filter(Boolean).join(" • ");
  let leadDomain = lead.websiteDomain ?? "—";

  if (!leadDomain && lead.websiteUrl) {
    try {
      leadDomain = new URL(lead.websiteUrl).hostname;
    } catch {
      leadDomain = lead.websiteUrl;
    }
  }

  return (
    <>
      <p className="font-medium">{lead.companyName ?? "Lead ohne Name"}</p>
      <p className="text-sm text-muted-foreground">{detail || "Kein Kontext textlich"}</p>
      <p className="mt-1 inline-flex items-center gap-1 text-sm text-muted-foreground">
        <Globe className="size-3.5" />
        {leadDomain}
      </p>
    </>
  );
}

export function AuditDetail({ id }: { id: string | Id<"audits"> }) {
  const result = useQuery(api.audits.getDetail, {
    id: id as Id<"audits">,
  }) as AuditDetailResult | undefined;
  const audit = result?.audit;
  const lead = result?.lead;

  const usedSkills = useMemo(() => audit?.usedSkills ?? [], [audit]);

  if (result === null) {
    return (
      <Card>
        <CardHeader>
          <CardTitle>Audit nicht gefunden</CardTitle>
          <CardDescription>
            Der gewünschte Audit-Datensatz konnte nicht geladen werden.
          </CardDescription>
        </CardHeader>
      </Card>
    );
  }

  if (audit === undefined) {
    return (
      <Card>
        <CardHeader>
          <CardTitle>Audit wird geladen...</CardTitle>
        </CardHeader>
      </Card>
    );
  }

  return (
    <div className="grid gap-4">
      <Card>
        <CardHeader>
          <CardDescription>Audit-Detail</CardDescription>
          <CardTitle className="text-xl">#{audit.slug}</CardTitle>
          <p className="inline-flex max-w-full items-center gap-1 truncate text-sm text-muted-foreground">
            <Globe className="size-3.5" />
            {audit.checkedDomain}
          </p>
        </CardHeader>
        <CardContent className="grid gap-3 sm:grid-cols-2">
          <div>
            <p className="text-sm text-muted-foreground">Status</p>
            <p>
              <Badge variant="secondary">{getStatusLabel(audit.status)}</Badge>
            </p>
          </div>
          <div>
            <p className="text-sm text-muted-foreground">Seitenanzahl</p>
            <p>{audit.checkedPages.length}</p>
          </div>
          <div>
            <p className="text-sm text-muted-foreground">Lead-Kontext</p>
            <div className="text-sm">{leadSummary(lead)}</div>
          </div>
          {audit.internalSummary ? (
            <div>
              <p className="text-sm text-muted-foreground">Interne Notiz</p>
              <p className="text-sm text-muted-foreground">{audit.internalSummary}</p>
            </div>
          ) : null}
        </CardContent>
      </Card>

      <Card>
        <CardHeader>
          <CardTitle>Verwendete Skills</CardTitle>
          <CardDescription>Skills, die an diesem Audit beteiligt wurden.</CardDescription>
        </CardHeader>
        <CardContent>
          {usedSkills.length === 0 ? (
            <p className="text-sm text-muted-foreground">Keine Skills gespeichert</p>
          ) : (
            <ul className="grid gap-2">
              {usedSkills.map((skill, index) => (
                <li
                  className="rounded-md border p-2 text-sm"
                  key={`${skill.name}-${index}`}
                >
                  <p className="font-medium">{skill.name}</p>
                  <p className="text-sm text-muted-foreground">
                    {skill.purpose ?? "Keine Zweckbeschreibung"}
                  </p>
                  <p className="mt-1 inline-flex flex-wrap items-center gap-1">
                    {skill.category ? <Badge variant="outline">{skill.category}</Badge> : null}
                    {skill.version ? <Badge variant="outline">{skill.version}</Badge> : null}
                    {skill.source ? <span className="text-xs text-muted-foreground">{skill.source}</span> : null}
                  </p>
                </li>
              ))}
            </ul>
          )}
        </CardContent>
      </Card>
    </div>
  );
}