learnharness/components/practice-cards.tsx

"use client";

import { MessageResponse } from "@/components/ai-elements/message";
import type { ArtifactPartProps } from "@/src/core";

/**
 * The practice transcript cards (practice sessions, owner design
 * 2026-10-04): three quiet records in the stream —
 *
 * - ProblemCard — a posed problem: the statement, compact-expandable
 *   (like every card here; the dock is the working surface, this is the
 *   record). The commitment NEVER renders — only the call's statement.
 * - ConcludeCard — the conclusion: outcome badge + verdict + the reveal
 *   (the committed solution, shown when the problem ended). A dismissal
 *   synthesis (outcome:"dismissed") renders as one muted line.
 * - ThinkingCard — the learner's own submission, user-side: the register
 *   is the two buttons' (Nudge = working trace, Commit = answer). The
 *   UNIFIED ThinkingBlock (owner round 2026-10-05): the quiz quote-block
 *   language in a faint user-side shell, never collapsible.
 */

import { ThinkingBlock } from "@/components/thinking-block";

/** The practice-thinking marker's details (native-messages.ts). */
export interface PracticeThinkingData {
	problemCallId: string;
	/** Legacy records (pre 2026-10-05) carry the old two-lane flag; ignored. */
	commit?: boolean;
	text: string;
}

export function ProblemCard({ part }: ArtifactPartProps) {
	// Always open, no chevron (owner round, 2026-10-05): the record IS the
	// statement — same container + eyebrow discipline as the answered card
	// and the dock (which mirrors this in Slice D). The commitment never
	// renders — only the call's statement.
	const input = (part.input ?? {}) as { statement?: string };
	const statement = typeof input.statement === "string" ? input.statement : "";
	return (
		<div data-testid="problem-card" className="lh-card-enter my-1 rounded-xl border bg-card p-4">
			<div className="mb-1 text-xs font-medium uppercase tracking-wide text-muted-foreground">Problem</div>
			<div className="lh-prose text-[15px]">
				<MessageResponse>{statement}</MessageResponse>
			</div>
		</div>
	);
}

const OUTCOME_LABEL: Record<string, string> = {
	solved: "Solved",
	solvedWithHints: "Solved with hints",
	movedOn: "Moved on",
	surrendered: "Surrendered",
	dismissed: "Dismissed",
};

export function ConcludeCard({ part }: ArtifactPartProps) {
	// The conclusion redesigned (owner round, 2026-10-05): the SOLUTION is
	// the hero — the modelSolution committed at pose time (part.reveal, the
	// view-seam join), shown verbatim, never re-authored. The verdict sits
	// below in the quiz-explanation register (small, muted, low-key).
	// Nothing collapsible. Legacy inputs (pre-slim records) that carry
	// their own solutionReveal fall back to it.
	const input = (part.input ?? {}) as { outcome?: string; verdict?: string; solutionReveal?: string };
	const outcome = typeof input.outcome === "string" ? input.outcome : "";
	const verdict = typeof input.verdict === "string" ? input.verdict : "";
	const reveal =
		typeof part.reveal === "string" ? part.reveal : typeof input.solutionReveal === "string" ? input.solutionReveal : "";

	// The dismissal synthesis: no verdict, no reveal — one muted line (the
	// learner clicked; the record needs only the fact).
	if (outcome === "dismissed") {
		return (
			<div data-testid="conclude-card" className="my-1 px-1 text-sm text-muted-foreground/70">
				Problem dismissed.
			</div>
		);
	}

	return (
		<div data-testid="conclude-card" className="lh-card-enter my-1 rounded-xl border bg-card p-4">
			<div className="mb-1 text-xs font-medium uppercase tracking-wide text-muted-foreground">
				{OUTCOME_LABEL[outcome] ?? "Concluded"}
			</div>
			{/* LABELED SECTIONS (owner round 2, 2026-10-05): 'Solved' alone over
			    unlabeled prose didn't read as the model solution — the hero now
			    carries its own label, and the verdict section mirrors it. Same
			    register as the quiz cards' section labels. */}
			{reveal.length > 0 && (
				<div>
					<div className="mb-0.5 text-xs font-medium uppercase tracking-wide text-muted-foreground">Model solution</div>
					<div className="lh-prose text-[15px]">
						<MessageResponse>{reveal}</MessageResponse>
					</div>
				</div>
			)}
			{verdict.length > 0 && (
				<div className="mt-3 rounded-lg bg-muted py-2 text-sm text-foreground/50">
					<span className="font-medium text-muted-foreground">Verdict: </span>
					<MessageResponse className="inline [&_p]:inline [&_p]:m-0">{verdict}</MessageResponse>
				</div>
			)}
		</div>
	);
}

export function ThinkingCard({ data }: { data: PracticeThinkingData }) {
	// The unified row (owner rounds, 2026-10-05): one style, one label —
	// collapsed arrival, "Your thinking", 50%-italic quote block on expand.
	// Legacy records' commit flag is deliberately unread (one lane now).
	return <ThinkingBlock testId="thinking-card" label="Your thinking" text={data.text} />;
}