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* 🔍 Explain Modal - Shows SHAP explanation for predictions
*
* Features:
* - Waterfall chart showing feature contributions
* - Plain English explanation
* - Top contributing features list
*/
import React, { useState } from 'react';
import { motion, AnimatePresence } from 'framer-motion';
import {
X,
HelpCircle,
TrendingUp,
TrendingDown,
Lightbulb,
RefreshCw,
AlertCircle
} from 'lucide-react';
import { useUserStore } from '@/store/userStore';
import { getUserIdSync } from '@/utils/userId';
interface ContributionItem {
feature: string;
value: number;
shap_value: number;
direction: string;
}
interface ExplainResponse {
success: boolean;
base_value?: number;
prediction?: any;
prediction_contribution?: number;
contributions: ContributionItem[];
waterfall_chart?: string;
explanation_text?: string;
}
interface ExplainModalProps {
isOpen: boolean;
onClose: () => void;
inputValues: Record<string, any>;
mode?: string;
}
const ExplainModal: React.FC<ExplainModalProps> = ({ isOpen, onClose, inputValues, mode = 'traditional' }) => {
const { isDark } = useUserStore();
const [loading, setLoading] = useState(true); // Start with loading=true
const [explanation, setExplanation] = useState<ExplainResponse | null>(null);
const [error, setError] = useState<string | null>(null);
const fetchExplanation = async () => {
try {
setLoading(true);
setError(null);
const userId = getUserIdSync();
console.log('[ExplainModal] Fetching explanation for:', inputValues);
const response = await fetch('/api/v1/automl/explain', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
input_values: inputValues,
user_id: userId,
mode: mode
})
});
const data = await response.json();
console.log('[ExplainModal] Response:', data);
if (response.ok && data.success) {
setExplanation(data);
} else {
setError(data.detail || data.error || 'Explanation failed');
}
} catch (err: any) {
console.error('[ExplainModal] Error:', err);
setError(err.message || 'Failed to get explanation');
} finally {
setLoading(false);
}
};
// Fetch when modal opens
React.useEffect(() => {
if (isOpen) {
setLoading(true);
setExplanation(null);
setError(null);
if (Object.keys(inputValues).length > 0) {
fetchExplanation();
} else {
setLoading(false);
setError('No input values provided. Please fill in the prediction form first.');
}
}
}, [isOpen]);
if (!isOpen) return null;
return (
<AnimatePresence>
<motion.div
initial={{ opacity: 0 }}
animate={{ opacity: 1 }}
exit={{ opacity: 0 }}
className="fixed inset-0 z-50 flex items-center justify-center p-4"
style={{ backgroundColor: 'rgba(0,0,0,0.7)' }}
onClick={onClose}
>
<motion.div
initial={{ scale: 0.9, opacity: 0 }}
animate={{ scale: 1, opacity: 1 }}
exit={{ scale: 0.9, opacity: 0 }}
className="w-full max-w-3xl max-h-[85vh] overflow-hidden rounded-2xl border"
style={{ backgroundColor: 'var(--bg-card)', borderColor: 'var(--border-color)' }}
onClick={(e) => e.stopPropagation()}
>
{/* Header */}
<div className="flex items-center justify-between p-4 border-b" style={{ borderColor: 'var(--border-color)' }}>
<div className="flex items-center gap-3">
<div className="p-2 rounded-xl bg-gradient-to-r from-blue-500/20 to-purple-500/20">
<HelpCircle className="w-5 h-5 text-blue-400" />
</div>
<div>
<h2 className="text-lg font-bold" style={{ color: 'var(--text-primary)' }}>
🔍 Why This Prediction?
</h2>
<p className="text-sm" style={{ color: 'var(--text-muted)' }}>
SHAP values show how each feature influenced the prediction
</p>
</div>
</div>
<button
onClick={onClose}
className="p-2 rounded-lg hover:bg-white/10 transition-colors"
>
<X className="w-5 h-5" style={{ color: 'var(--text-muted)' }} />
</button>
</div>
{/* Content */}
<div className="p-6 overflow-y-auto max-h-[calc(85vh-80px)]">
{loading && (
<div className="flex flex-col items-center justify-center py-12">
<RefreshCw className="w-12 h-12 animate-spin text-primary-400 mb-4" />
<p style={{ color: 'var(--text-muted)' }}>Calculating SHAP values...</p>
<p className="text-xs mt-2" style={{ color: 'var(--text-muted)' }}>This may take a few seconds...</p>
</div>
)}
{error && !loading && (
<div className="text-center py-12">
<AlertCircle className="w-12 h-12 mx-auto mb-4 text-red-400" />
<p className="text-red-400 mb-2">{error}</p>
<p className="text-sm" style={{ color: 'var(--text-muted)' }}>
Make sure SHAP is installed: pip install shap
</p>
</div>
)}
{explanation && !loading && (
<div className="space-y-6">
{/* Plain English Explanation */}
{explanation.explanation_text && (
<div
className="p-4 rounded-xl border-l-4 border-l-blue-500"
style={{ backgroundColor: isDark ? 'rgba(59, 130, 246, 0.1)' : 'rgba(59, 130, 246, 0.05)' }}
>
<div className="flex items-start gap-3">
<Lightbulb className="w-5 h-5 text-blue-400 mt-0.5" />
<div>
<p className="font-medium mb-1" style={{ color: 'var(--text-primary)' }}>
Quick Explanation
</p>
<p style={{ color: 'var(--text-muted)' }}>
{explanation.explanation_text}
</p>
</div>
</div>
</div>
)}
{/* Waterfall Chart */}
{explanation.waterfall_chart && (
<div>
<h3 className="font-semibold mb-3" style={{ color: 'var(--text-primary)' }}>
📊 Feature Impact (Waterfall Chart)
</h3>
<div
className="rounded-xl overflow-hidden"
style={{ backgroundColor: isDark ? '#0f172a' : '#f8fafc' }}
>
<img
src={explanation.waterfall_chart}
alt="SHAP Waterfall Chart"
className="w-full"
/>
</div>
</div>
)}
{/* Feature Contributions List */}
<div>
<h3 className="font-semibold mb-3" style={{ color: 'var(--text-primary)' }}>
🎯 Top Contributing Features
</h3>
<div className="space-y-2">
{explanation.contributions.slice(0, 10).map((contrib, i) => (
<div
key={i}
className="flex items-center gap-3 p-3 rounded-xl"
style={{ backgroundColor: isDark ? 'rgba(255,255,255,0.03)' : 'rgba(0,0,0,0.02)' }}
>
<div className={`p-1.5 rounded-lg ${contrib.direction === 'positive' ? 'bg-green-500/20' : 'bg-red-500/20'}`}>
{contrib.direction === 'positive' ? (
<TrendingUp className="w-4 h-4 text-green-400" />
) : (
<TrendingDown className="w-4 h-4 text-red-400" />
)}
</div>
<div className="flex-1">
<p className="font-medium text-sm" style={{ color: 'var(--text-primary)' }}>
{contrib.feature}
</p>
<p className="text-xs" style={{ color: 'var(--text-muted)' }}>
Value: {typeof contrib.value === 'number' ? contrib.value.toFixed(2) : contrib.value}
</p>
</div>
<div className="text-right">
<span
className={`font-bold text-sm ${contrib.direction === 'positive' ? 'text-green-400' : 'text-red-400'}`}
>
{contrib.shap_value > 0 ? '+' : ''}{contrib.shap_value.toFixed(3)}
</span>
</div>
</div>
))}
</div>
</div>
{/* Base Value */}
{explanation.base_value !== undefined && (
<div className="text-center pt-4 border-t" style={{ borderColor: 'var(--border-color)' }}>
<p className="text-sm" style={{ color: 'var(--text-muted)' }}>
Base value: <span className="font-mono">{explanation.base_value.toFixed(4)}</span>
{explanation.prediction !== undefined && (
<> → Prediction: <span className="font-bold text-primary-400">{explanation.prediction}</span></>
)}
</p>
</div>
)}
</div>
)}
</div>
</motion.div>
</motion.div>
</AnimatePresence>
);
};
export default ExplainModal;
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