import type { SubscriptionOverviewItem } from "@umt/contracts";
import { Link } from "react-router";
import { consolePath } from "~/components/console/nav.ts";
import { StatusBadge } from "~/components/console/status-badge.tsx";
import { CoverPlaceholder, relTime } from "~/components/library/parts.tsx";
import { cn } from "~/lib/utils.ts";
import { SubscriptionMenu } from "./actions.tsx";
import {
  autoFillText,
  foldNames,
  progressParts,
  progressText,
  SUB_KIND_LABEL,
  seasonLabel,
  slotBadge,
} from "./model.ts";

// 总览卡片 / 列表行(设计 §1.2)。点卡片 = 查看对比。

type Item = SubscriptionOverviewItem;

export const itemTitle = (x: Item) => x.mediaEntityTitle ?? x.titleQuery ?? "未命名";

/** 状态角标:只标 暂停 / 待定 / 洗版中 / 等待新季 */
function Flags({ x }: { x: Item }) {
  return (
    <>
      {x.group === "paused" ? <StatusBadge tone="neutral">暂停</StatusBadge> : null}
      {x.group === "pending" ? (
        <StatusBadge tone="warning">{x.mediaEntityId ? "待定" : "不在媒体库"}</StatusBadge>
      ) : null}
      {x.upgrading ? <StatusBadge tone="warning">洗版中</StatusBadge> : null}
      {x.awaitingNewSeason ? <StatusBadge tone="success">等待新季</StatusBadge> : null}
    </>
  );
}

/** 进度:数字 + 已入库/在途两段细条;总未知写"持续追踪" */
export function ProgressBlock({ x, className }: { x: Pick<Item, "progress" | "mode">; className?: string }) {
  const parts = progressParts(x.progress);
  const unknown = x.progress.total === null;
  return (
    <div className={cn("min-w-0", className)}>
      <div className="flex items-baseline justify-between gap-2 text-meta">
        <span className="font-medium text-foreground tabular-nums">
          {progressText(x.progress)}
          {x.progress.inflight > 0 ? (
            <span className="font-normal text-muted-foreground"> · 在途 {x.progress.inflight}</span>
          ) : null}
        </span>
        {unknown ? <span className="text-muted-foreground">持续追踪</span> : null}
      </div>
      <div
        className={cn(
          "mt-1 flex h-1 w-full gap-px overflow-hidden rounded-full bg-foreground/[0.08]",
          unknown &&
            "bg-[repeating-linear-gradient(90deg,var(--color-foreground)_0_4px,transparent_4px_8px)] opacity-20",
        )}
        role="img"
        aria-label={`已入库 ${x.progress.have}，在途 ${x.progress.inflight}，总 ${x.progress.total ?? "未知"}`}
      >
        {unknown ? null : (
          <>
            <div className="h-full bg-foreground/70" style={{ width: `${parts.have * 100}%` }} />
            <div
              className="h-full bg-[repeating-linear-gradient(135deg,var(--color-foreground)_0_2px,transparent_2px_4px)] opacity-50"
              style={{ width: `${parts.inflight * 100}%` }}
            />
          </>
        )}
      </div>
    </div>
  );
}

/** 只按标题订阅、没关联媒体库作品时的提示:这类订阅不搜索也不下载(L5) */
export const UNBOUND_HINT = "未关联作品，不会自动搜索和下载";

export function SlotBadges({ slots, max = 4, unbound }: { slots: Item["slots"]; max?: number; unbound?: boolean }) {
  if (unbound) return <span className="text-meta text-warning">{UNBOUND_HINT}</span>;
  if (slots.length === 0) return <span className="text-meta text-muted-foreground">没有收录版本</span>;
  return (
    <div className="flex min-w-0 flex-wrap gap-1">
      {slots.slice(0, max).map((s) => {
        const b = slotBadge(s);
        return (
          <StatusBadge key={s.slotId} tone={b.tone} className="max-w-full">
            <span className="max-w-24 truncate text-foreground" title={s.name}>
              {s.name}
            </span>
            <span className="tabular-nums">{b.label}</span>
          </StatusBadge>
        );
      })}
      {slots.length > max ? <span className="text-meta text-muted-foreground">+{slots.length - max}</span> : null}
    </div>
  );
}

function nextSearchText(x: Item) {
  if (!x.searchEnabled) return "搜索已关";
  if (x.status === "paused" || x.status === "completed") return "—";
  return x.nextSearchAt ? relTime(x.nextSearchAt) : "待排期";
}

function Meta({ x }: { x: Item }) {
  return (
    <dl className="grid grid-cols-[auto_1fr] gap-x-3 gap-y-0.5 text-meta">
      <dt className="text-muted-foreground">上次更新</dt>
      <dd className="truncate text-foreground tabular-nums">{relTime(x.lastUpdatedAt)}</dd>
      <dt className="text-muted-foreground">下次搜索</dt>
      <dd className="truncate text-foreground tabular-nums">{nextSearchText(x)}</dd>
      <dt className="text-muted-foreground">站点</dt>
      <dd className="truncate text-foreground" title={x.sites.map((s) => s.name).join("、")}>
        {foldNames(x.sites.map((s) => s.name))}
      </dd>
      <dt className="text-muted-foreground">规则组</dt>
      <dd className="truncate text-foreground" title={x.ruleGroups.map((s) => s.name).join("、")}>
        {foldNames(
          x.ruleGroups.map((s) => s.name),
          2,
          "未设置",
        )}
      </dd>
    </dl>
  );
}

function TitleLine({ x }: { x: Item }) {
  const season = seasonLabel(x);
  return (
    <div className="min-w-0">
      <p className="truncate text-body font-semibold text-foreground" title={itemTitle(x)}>
        {itemTitle(x)}
      </p>
      <p className="truncate text-meta text-muted-foreground">
        {[x.year, SUB_KIND_LABEL[x.mediaKind], season].filter(Boolean).join(" · ")}
      </p>
    </div>
  );
}

export function SubscriptionCard({
  x,
  onEdit,
  selected,
  onSelect,
}: {
  x: Item;
  onEdit: () => void;
  selected?: boolean;
  onSelect?: (v: boolean) => void;
}) {
  return (
    <article
      className={cn(
        "pg-slab group relative flex min-w-0 flex-col gap-3 rounded-xl p-3.5 transition-shadow duration-micro hover:shadow-md",
        selected && "ring-2 ring-foreground/40",
      )}
    >
      <div className="flex min-w-0 items-start gap-3">
        <CoverPlaceholder title={itemTitle(x)} kind={x.mediaKind} className="h-20 w-14" />
        <div className="min-w-0 flex-1">
          <Link
            to={consolePath("subscriptions", x.id)}
            className="block min-w-0 rounded-md outline-none after:absolute after:inset-0 after:content-[''] focus-visible:ring-2 focus-visible:ring-ring"
          >
            <TitleLine x={x} />
          </Link>
          <div className="relative mt-1.5 flex flex-wrap gap-1">
            <Flags x={x} />
          </div>
        </div>
        <div className="relative z-10 flex items-center gap-1">
          {onSelect ? (
            <input
              type="checkbox"
              aria-label={`选择 ${itemTitle(x)}`}
              checked={!!selected}
              onChange={(e) => onSelect(e.target.checked)}
              className="h-4 w-4 cursor-pointer accent-foreground"
            />
          ) : null}
          <SubscriptionMenu sub={x} onEdit={onEdit} />
        </div>
      </div>
      <ProgressBlock x={x} />
      <SlotBadges slots={x.slots} unbound={!x.mediaEntityId} />
      <Meta x={x} />
      <p className="text-meta text-muted-foreground">{autoFillText(x.autoFill)}</p>
    </article>
  );
}

/** 列表视图的一行(桌面表格化,手机折成两行) */
export function SubscriptionRow({
  x,
  onEdit,
  selected,
  onSelect,
}: {
  x: Item;
  onEdit: () => void;
  selected?: boolean;
  onSelect?: (v: boolean) => void;
}) {
  return (
    <li
      className={cn(
        "relative grid min-w-0 grid-cols-[auto_1fr_auto] items-center gap-3 px-3 py-2.5 hover:bg-foreground/[0.03] md:grid-cols-[auto_minmax(0,2fr)_minmax(0,1.2fr)_minmax(0,2fr)_7rem_7rem_auto]",
        selected && "bg-foreground/[0.05]",
      )}
    >
      <div className="relative z-10 flex items-center gap-2">
        {onSelect ? (
          <input
            type="checkbox"
            aria-label={`选择 ${itemTitle(x)}`}
            checked={!!selected}
            onChange={(e) => onSelect(e.target.checked)}
            className="h-4 w-4 cursor-pointer accent-foreground"
          />
        ) : null}
        <CoverPlaceholder title={itemTitle(x)} kind={x.mediaKind} small className="h-10 w-7" />
      </div>
      <Link
        to={consolePath("subscriptions", x.id)}
        className="min-w-0 outline-none after:absolute after:inset-0 after:content-[''] focus-visible:underline"
      >
        <TitleLine x={x} />
      </Link>
      <ProgressBlock x={x} className="hidden md:block" />
      <div className="relative hidden min-w-0 md:block">
        <SlotBadges slots={x.slots} max={3} unbound={!x.mediaEntityId} />
      </div>
      <span className="hidden text-meta text-muted-foreground tabular-nums md:block">{relTime(x.lastUpdatedAt)}</span>
      <span className="hidden text-meta text-muted-foreground tabular-nums md:block">{nextSearchText(x)}</span>
      <div className="relative z-10 flex items-center gap-1">
        <span className="hidden flex-wrap gap-1 lg:flex">
          <Flags x={x} />
        </span>
        <SubscriptionMenu sub={x} onEdit={onEdit} />
      </div>
      <div className="col-span-3 -mt-1 md:hidden">
        <ProgressBlock x={x} />
      </div>
    </li>
  );
}