feat(lessons): add lessons from client db
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shafin-r
175
src/components/lessons/ContextEliminationWidget.tsx
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175
src/components/lessons/ContextEliminationWidget.tsx
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import React, { useState } from 'react';
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import { CheckCircle2, RotateCcw, ChevronRight } from 'lucide-react';
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export interface VocabOption {
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id: string;
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definition: string;
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isCorrect: boolean;
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elimReason: string; // why wrong (for eliminated options) or why right (for correct option)
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}
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export interface VocabExercise {
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sentence: string;
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word: string; // the target word — will be highlighted
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question: string;
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options: VocabOption[];
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}
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interface ContextEliminationWidgetProps {
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exercises: VocabExercise[];
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accentColor?: string;
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}
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export default function ContextEliminationWidget({ exercises, accentColor = 'rose' }: ContextEliminationWidgetProps) {
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const [activeEx, setActiveEx] = useState(0);
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const [eliminated, setEliminated] = useState<Set<string>>(new Set());
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const [revealed, setRevealed] = useState(false);
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const [triedCorrect, setTriedCorrect] = useState(false);
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const exercise = exercises[activeEx];
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const wrongIds = exercise.options.filter(o => !o.isCorrect).map(o => o.id);
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const allWrongEliminated = wrongIds.every(id => eliminated.has(id));
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const eliminate = (id: string) => {
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const opt = exercise.options.find(o => o.id === id)!;
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if (opt.isCorrect) {
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setTriedCorrect(true);
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setTimeout(() => setTriedCorrect(false), 1500);
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} else {
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const newElim = new Set([...eliminated, id]);
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setEliminated(newElim);
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if (wrongIds.every(wid => newElim.has(wid))) {
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setRevealed(true);
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}
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}
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};
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const reset = () => { setEliminated(new Set()); setRevealed(false); setTriedCorrect(false); };
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const switchEx = (i: number) => { setActiveEx(i); setEliminated(new Set()); setRevealed(false); setTriedCorrect(false); };
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// Highlight the target word in the sentence
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const renderSentence = () => {
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const idx = exercise.sentence.toLowerCase().indexOf(exercise.word.toLowerCase());
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if (idx === -1) return <>{exercise.sentence}</>;
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return (
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<>
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{exercise.sentence.slice(0, idx)}
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<mark className={`bg-${accentColor}-200 text-${accentColor}-900 font-bold px-0.5 rounded not-italic`}>
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{exercise.sentence.slice(idx, idx + exercise.word.length)}
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</mark>
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{exercise.sentence.slice(idx + exercise.word.length)}
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</>
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);
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};
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return (
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<div className="rounded-2xl border border-gray-200 bg-white overflow-hidden shadow-sm">
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{/* Tab strip */}
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{exercises.length > 1 && (
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<div className="flex border-b border-gray-200 bg-gray-50 overflow-x-auto">
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{exercises.map((_, i) => (
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<button
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key={i}
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onClick={() => switchEx(i)}
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className={`px-4 py-2.5 text-sm font-medium whitespace-nowrap transition-colors ${
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i === activeEx
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? `bg-white border-b-2 border-${accentColor}-600 text-${accentColor}-700`
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: 'text-gray-500 hover:text-gray-700'
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}`}
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>
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Word {i + 1}
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</button>
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))}
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</div>
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)}
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{/* Sentence in context */}
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<div className={`px-5 py-4 border-b border-gray-100 bg-${accentColor}-50`}>
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<p className={`text-xs font-semibold uppercase tracking-wider text-${accentColor}-500 mb-2`}>Sentence in Context</p>
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<p className="text-gray-700 italic leading-relaxed text-sm">{renderSentence()}</p>
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</div>
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{/* Question + instruction */}
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<div className="px-5 pt-4 pb-2">
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<p className="font-medium text-gray-800 text-sm mb-1">{exercise.question}</p>
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<p className="text-xs text-gray-400 italic">
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{revealed
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? 'You found it! The correct definition is highlighted.'
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: 'Click "Eliminate" on definitions that don\'t fit the context. Work by elimination.'}
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</p>
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</div>
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{/* Tried to eliminate correct option flash */}
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{triedCorrect && (
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<div className="mx-5 mb-2 px-3 py-2 bg-amber-50 border border-amber-200 rounded-xl text-xs text-amber-700 font-medium">
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Can't eliminate that one — it fits the context too well!
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</div>
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)}
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{/* Options */}
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<div className="px-5 py-3 space-y-2">
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{exercise.options.map(opt => {
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const isElim = eliminated.has(opt.id);
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const isAnswer = opt.isCorrect && revealed;
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let wrapCls = 'border-gray-200 bg-white';
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if (isAnswer) wrapCls = 'border-green-400 bg-green-50';
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else if (isElim) wrapCls = 'border-gray-100 bg-gray-50';
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return (
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<div
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key={opt.id}
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className={`rounded-xl border px-4 py-3 transition-all ${wrapCls} ${isElim ? 'opacity-50' : ''}`}
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>
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<div className="flex items-start gap-3">
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<span className={`text-xs font-bold mt-0.5 shrink-0 ${isElim ? 'text-gray-400' : isAnswer ? 'text-green-700' : 'text-gray-500'}`}>
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{opt.id}.
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</span>
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<div className="flex-1 min-w-0">
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<p className={`text-sm leading-snug ${
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isElim ? 'text-gray-400 line-through' :
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isAnswer ? 'text-green-800 font-semibold' :
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'text-gray-700'
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}`}>
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{opt.definition}
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</p>
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{isElim && (
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<p className="text-xs text-gray-400 mt-0.5 italic">{opt.elimReason}</p>
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)}
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{isAnswer && (
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<p className="text-xs text-green-700 mt-1">✓ {opt.elimReason}</p>
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)}
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</div>
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<div className="shrink-0">
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{isAnswer && <CheckCircle2 className="w-5 h-5 text-green-500" />}
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{!isElim && !isAnswer && !revealed && (
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<button
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onClick={() => eliminate(opt.id)}
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className="text-xs font-semibold text-red-500 hover:text-red-700 hover:bg-red-50 px-2.5 py-1 rounded-lg transition-colors border border-red-200 hover:border-red-300"
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>
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Eliminate ✗
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</button>
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)}
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</div>
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</div>
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</div>
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);
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})}
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</div>
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<div className="px-5 pb-5 flex items-center gap-3">
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<button onClick={reset} className="flex items-center gap-1.5 text-sm text-gray-500 hover:text-gray-700 transition-colors">
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<RotateCcw className="w-3.5 h-3.5" /> Reset
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</button>
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{revealed && activeEx < exercises.length - 1 && (
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<button
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onClick={() => switchEx(activeEx + 1)}
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className={`ml-auto flex items-center gap-1.5 text-sm font-semibold text-${accentColor}-700 hover:text-${accentColor}-900 transition-colors`}
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>
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Next word <ChevronRight className="w-4 h-4" />
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</button>
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)}
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</div>
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</div>
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);
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}
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