Posts

import type { ReactNode } from "react";

// The parts every panel in this kit is made of. The corners of what is inside follow the panel's own.
const air = {
  panel: "flex w-(--tui-post-card-width) max-w-full flex-col gap-(--tui-post-card-gap) rounded-(--tui-post-card-radius) bg-(--tui-post-card-bg) p-(--tui-post-card-padding) font-(family-name:--tui-font) text-(length:--tui-post-card-font-size) leading-none text-(--tui-post-card-fg) shadow-(--tui-post-card-shadow)",
  head: "flex h-9 shrink-0 items-center justify-between gap-3 px-3 text-[0.93em] font-medium text-(--tui-post-card-muted)",
  row: "flex min-h-(--tui-post-card-row-height) items-center gap-3 rounded-[calc(var(--tui-post-card-radius)_-_var(--tui-post-card-padding))] px-3 py-2 transition-colors duration-(--tui-duration)",
  meta: "ml-auto shrink-0 pl-2 text-[0.93em] text-(--tui-post-card-muted) tabular-nums",
  detail: "text-[0.93em] leading-snug text-(--tui-post-card-muted)",
  hover: "hover:bg-(--tui-post-card-well)",
  focus: "outline-none focus-visible:[outline:2px_solid_var(--tui-ring)] focus-visible:[outline-offset:2px]",
};

export interface PostsProps {
  /** A quiet label over the rows. */
  label?: ReactNode;
  /** A link at the end of the label, to all of them. */
  all?: { label: string; href: string };
  items: { title: ReactNode; href: string; /** A quieter line under the title. */ detail?: ReactNode; /** A quiet word at the end of the row: the kind of post, the date. */ meta?: ReactNode }[];
  className?: string;
}

/**
 * Things to read, as rows in a floating panel. Each row is one link: its
 * title, a quieter line, and a word at the end. The row under the pointer
 * is picked out and its word gives way to an arrow.
 */
export function Posts({ label, all, items, className }: PostsProps) {
  return (
    <nav aria-label={typeof label === "string" ? label : "Posts"} data-slot="posts" className={[air.panel, className].filter(Boolean).join(" ")}>
      {(label || all) && (
        <div className={air.head}>
          {label}
          {all && (
            <a href={all.href} className={"rounded-sm text-(--tui-post-card-muted) no-underline transition-colors duration-(--tui-duration) hover:text-(--tui-post-card-fg) " + air.focus}>
              {all.label}
            </a>
          )}
        </div>
      )}
      <ul className="m-0 flex list-none flex-col gap-(--tui-post-card-gap) p-0">
        {items.map((item, i) => (
          <li key={i} data-slot="post">
            <a href={item.href} className={["group text-(--tui-post-card-fg) no-underline", air.row, air.hover, air.focus].join(" ")}>
              <span className="flex min-w-0 flex-col gap-1.5">
                <span className="truncate font-medium">{item.title}</span>
                {item.detail && <span className={"truncate " + air.detail}>{item.detail}</span>}
              </span>
              <span className={air.meta + " grid justify-items-end"}>
                {item.meta && <span className="col-start-1 row-start-1 transition-opacity duration-(--tui-duration) group-hover:opacity-0 group-focus-visible:opacity-0">{item.meta}</span>}
                <span aria-hidden className="col-start-1 row-start-1 flex items-center opacity-0 transition-opacity duration-(--tui-duration) group-hover:opacity-100 group-focus-visible:opacity-100">
                  <svg aria-hidden viewBox="0 0 16 16" fill="none" stroke="currentColor" strokeWidth="1.75" strokeLinecap="round" strokeLinejoin="round" className="size-[1.1em]">
            <path d="M3.500 8h9M8.500 4l4 4-4 4" />
          </svg>
                </span>
              </span>
            </a>
          </li>
        ))}
      </ul>
    </nav>
  );
}

:root {
  color-scheme: light;
  --tui-bg: #ffffff;
  --tui-fg: #0a0a0a;
  --tui-muted: #f5f5f5;
  --tui-muted-fg: #737373;
  --tui-border: #e5e5e5;
  --tui-primary: #171717;
  --tui-primary-fg: #fafafa;
  --tui-ring: #a3a3a3;
  --tui-success: #16a34a;
  --tui-warning: #d97706;
  --tui-danger: #dc2626;
  --tui-radius: 8px;
  --tui-border-width: 1px;
  --tui-space: 4px;
  --tui-shadow: none;
  --tui-font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --tui-text: 14px;
  --tui-duration: 150ms;

  /* Posts */
  --tui-post-card-width: 400px;
  --tui-post-card-padding: calc(var(--tui-space) * 2);
  --tui-post-card-gap: calc(var(--tui-space) * 0.5);
  --tui-post-card-radius: calc(var(--tui-radius) * 3.25);
  --tui-post-card-font-size: var(--tui-text);
  --tui-post-card-bg: light-dark(var(--tui-bg), color-mix(in oklab, var(--tui-bg) 90%, var(--tui-fg)));
  --tui-post-card-shadow: 0 0 0 1px color-mix(in srgb, var(--tui-fg) 5%, transparent), 0 2px 6px rgb(0 0 0 / 0.04), 0 16px 40px rgb(0 0 0 / 0.1);
  --tui-post-card-fg: var(--tui-fg);
  --tui-post-card-muted: var(--tui-muted-fg);
  --tui-post-card-well: color-mix(in srgb, light-dark(var(--tui-bg), color-mix(in oklab, var(--tui-bg) 90%, var(--tui-fg))) 94%, var(--tui-fg));
  --tui-post-card-row-height: calc(var(--tui-space) * 14);
}

.dark,
[data-theme="dark"] {
  color-scheme: dark;
  --tui-bg: #0a0a0a;
  --tui-fg: #fafafa;
  --tui-muted: #1c1c1c;
  --tui-muted-fg: #a3a3a3;
  --tui-border: #2a2a2a;
  --tui-primary: #fafafa;
  --tui-primary-fg: #171717;
  --tui-ring: #737373;
  --tui-success: #22c55e;
  --tui-warning: #f59e0b;
  --tui-danger: #ef4444;
}