{% extends "base.html" %}
{% block title %}ML Ensemble Predictor{% endblock %}

{% block content %}
<div x-data="mlEnsembleApp()" x-init="init()" class="space-y-6">

    <!-- Header -->
    <div class="flex items-center justify-between">
        <div>
            <h1 class="text-2xl font-bold text-white">ML Ensemble Predictor</h1>
            <p class="mt-1 text-sm text-gray-400">Multi-model machine learning predictions with confidence scoring and feature analysis</p>
        </div>
        <div class="flex items-center gap-3">
            <span class="text-xs text-gray-500" x-text="lastRefresh ? 'Updated: ' + lastRefresh : ''"></span>
            <button @click="fetchData()" :disabled="loading"
                    class="px-3 py-1.5 text-xs bg-gray-800 hover:bg-gray-700 text-gray-300 rounded-lg transition disabled:opacity-50">
                Refresh
            </button>
        </div>
    </div>

    <!-- Loading -->
    <div x-show="loading" class="flex items-center justify-center py-16">
        <div class="text-center">
            <svg class="w-8 h-8 animate-spin text-koin-400 mx-auto mb-3" fill="none" viewBox="0 0 24 24">
                <circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"/>
                <path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"/>
            </svg>
            <p class="text-sm text-gray-500">Running ensemble predictions...</p>
        </div>
    </div>

    <!-- Error -->
    <div x-show="error" x-cloak class="bg-red-900/20 border border-red-800 rounded-xl p-4">
        <p class="text-sm text-red-400" x-text="error"></p>
    </div>

    <!-- Content -->
    <div x-show="!loading && !error" x-cloak>

        <!-- Summary Cards -->
        <div class="grid grid-cols-2 md:grid-cols-4 gap-4 mb-6">
            <div class="bg-gray-800 border border-gray-700 rounded-xl p-4 text-center">
                <p class="text-2xl font-bold text-white" x-text="stats.total">0</p>
                <p class="text-xs text-gray-400 mt-1">Total Predictions</p>
            </div>
            <div class="bg-gray-800 border border-emerald-800/50 rounded-xl p-4 text-center">
                <p class="text-2xl font-bold text-emerald-400" x-text="stats.bullish">0</p>
                <p class="text-xs text-gray-400 mt-1">Bullish</p>
            </div>
            <div class="bg-gray-800 border border-red-800/50 rounded-xl p-4 text-center">
                <p class="text-2xl font-bold text-red-400" x-text="stats.bearish">0</p>
                <p class="text-xs text-gray-400 mt-1">Bearish</p>
            </div>
            <div class="bg-gray-800 border border-koin-800/50 rounded-xl p-4 text-center">
                <p class="text-2xl font-bold text-koin-400" x-text="fmt(stats.avg_confidence, 1) + '%'">-</p>
                <p class="text-xs text-gray-400 mt-1">Avg Confidence</p>
            </div>
        </div>

        <!-- Filters -->
        <div class="flex flex-wrap items-center gap-2 mb-6">
            <button @click="filter = 'all'" :class="filter === 'all' ? 'bg-koin-600 text-white' : 'bg-gray-800 text-gray-400 hover:text-gray-300'"
                    class="px-3 py-1.5 text-xs font-medium rounded-lg transition">All</button>
            <button @click="filter = 'strong_buy'" :class="filter === 'strong_buy' ? 'bg-emerald-600 text-white' : 'bg-gray-800 text-gray-400 hover:text-gray-300'"
                    class="px-3 py-1.5 text-xs font-medium rounded-lg transition">Strong Buy</button>
            <button @click="filter = 'buy'" :class="filter === 'buy' ? 'bg-green-600 text-white' : 'bg-gray-800 text-gray-400 hover:text-gray-300'"
                    class="px-3 py-1.5 text-xs font-medium rounded-lg transition">Buy</button>
            <button @click="filter = 'sell'" :class="filter === 'sell' ? 'bg-red-600 text-white' : 'bg-gray-800 text-gray-400 hover:text-gray-300'"
                    class="px-3 py-1.5 text-xs font-medium rounded-lg transition">Sell</button>
        </div>

        <!-- Empty State -->
        <div x-show="filteredItems.length === 0" class="text-center py-16">
            <svg class="w-12 h-12 text-gray-600 mx-auto mb-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5" d="M9.75 17L9 20l-1 1h8l-1-1-.75-3M3 13h18M5 17h14a2 2 0 002-2V5a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z"/>
            </svg>
            <p class="text-sm text-gray-500">No predictions available for this filter</p>
        </div>

        <!-- Cards Grid -->
        <div class="grid grid-cols-1 lg:grid-cols-2 gap-4">
            <template x-for="item in filteredItems" :key="item.symbol">
                <div class="bg-gray-800 border border-gray-700 rounded-xl p-5 hover:border-gray-600 transition">
                    <!-- Coin Header -->
                    <div class="flex items-center justify-between mb-4">
                        <div class="flex items-center gap-3">
                            <div class="w-8 h-8 rounded-full bg-gray-700 flex items-center justify-center overflow-hidden">
                                <img :src="item.icon || __stockIconUrl(item.symbol)" :alt="item.symbol"
                                     class="w-8 h-8 rounded-full" onerror="this.style.display='none'">
                            </div>
                            <div>
                                <p class="text-sm font-bold text-white" x-text="item.symbol"></p>
                                <p class="text-xs text-gray-500" x-text="item.name || item.symbol"></p>
                            </div>
                        </div>
                        <div class="flex items-center gap-2">
                            <!-- Ensemble Prediction Badge -->
                            <span class="px-2.5 py-1 text-xs font-bold rounded-full uppercase"
                                  :class="predictionClass(item.ensemble_prediction)"
                                  x-text="(item.ensemble_prediction || 'neutral').replace(/_/g, ' ')"></span>
                        </div>
                    </div>

                    <!-- Confidence & Change -->
                    <div class="grid grid-cols-2 gap-3 mb-4">
                        <div>
                            <p class="text-xs text-gray-500 mb-1">Confidence</p>
                            <div class="flex items-center gap-2">
                                <div class="flex-1 bg-gray-700 rounded-full h-2">
                                    <div class="h-2 rounded-full bg-koin-500 transition-all duration-500"
                                         :style="'width:' + Math.min(item.confidence || 0, 100) + '%'"></div>
                                </div>
                                <span class="text-xs font-medium text-koin-400" x-text="fmt(item.confidence, 1) + '%'"></span>
                            </div>
                        </div>
                        <div>
                            <p class="text-xs text-gray-500 mb-1">Predicted Change</p>
                            <p class="text-sm font-bold"
                               :class="(item.predicted_change || 0) >= 0 ? 'text-emerald-400' : 'text-red-400'"
                               x-text="fmtPct(item.predicted_change)"></p>
                        </div>
                    </div>

                    <!-- Signal Badge -->
                    <div class="flex items-center justify-between mb-4">
                        <span class="text-xs text-gray-400">Signal</span>
                        <span class="px-2 py-0.5 text-xs font-medium rounded-full"
                              :class="signalBadgeClass(item.signal)"
                              x-text="(item.signal || 'neutral').replace(/_/g, ' ')"></span>
                    </div>

                    <!-- Model Agreement -->
                    <div class="flex items-center justify-between mb-4">
                        <span class="text-xs text-gray-400">Model Agreement</span>
                        <div class="flex items-center gap-1.5">
                            <template x-for="i in 3" :key="i">
                                <div class="w-3 h-3 rounded-full"
                                     :class="i <= (item.agreement || 0) ? 'bg-emerald-500' : 'bg-gray-600'"></div>
                            </template>
                            <span class="text-xs font-medium ml-1"
                                  :class="(item.agreement || 0) === 3 ? 'text-emerald-400' : (item.agreement || 0) === 2 ? 'text-amber-400' : 'text-gray-400'"
                                  x-text="(item.agreement || 0) + '/3'"></span>
                        </div>
                    </div>

                    <!-- 3 Model Breakdown -->
                    <div class="bg-gray-900/50 border border-gray-700/50 rounded-lg p-3 mb-4">
                        <p class="text-xs text-gray-500 font-medium mb-3">Model Breakdown</p>
                        <div class="space-y-3">
                            <!-- Random Forest -->
                            <div class="flex items-center justify-between" x-show="item.models?.random_forest">
                                <div class="flex items-center gap-2">
                                    <div class="w-1.5 h-1.5 rounded-full bg-blue-400"></div>
                                    <span class="text-xs text-gray-300">Random Forest</span>
                                </div>
                                <div class="flex items-center gap-3">
                                    <span class="px-1.5 py-0.5 text-xs rounded"
                                          :class="(item.models?.random_forest?.prediction || '').toLowerCase() === 'bullish' ? 'bg-emerald-900/50 text-emerald-400' : 'bg-red-900/50 text-red-400'"
                                          x-text="item.models?.random_forest?.prediction || '-'"></span>
                                    <span class="text-xs text-gray-400" x-text="fmt(item.models?.random_forest?.probability * 100, 1) + '%'"></span>
                                    <span class="text-xs text-gray-500">Acc: <span x-text="fmt(item.models?.random_forest?.accuracy * 100, 1) + '%'"></span></span>
                                </div>
                            </div>
                            <!-- Gradient Boost -->
                            <div class="flex items-center justify-between" x-show="item.models?.gradient_boost">
                                <div class="flex items-center gap-2">
                                    <div class="w-1.5 h-1.5 rounded-full bg-purple-400"></div>
                                    <span class="text-xs text-gray-300">Gradient Boost</span>
                                </div>
                                <div class="flex items-center gap-3">
                                    <span class="px-1.5 py-0.5 text-xs rounded"
                                          :class="(item.models?.gradient_boost?.prediction || '').toLowerCase() === 'bullish' ? 'bg-emerald-900/50 text-emerald-400' : 'bg-red-900/50 text-red-400'"
                                          x-text="item.models?.gradient_boost?.prediction || '-'"></span>
                                    <span class="text-xs text-gray-400" x-text="fmt(item.models?.gradient_boost?.probability * 100, 1) + '%'"></span>
                                    <span class="text-xs text-gray-500">Acc: <span x-text="fmt(item.models?.gradient_boost?.accuracy * 100, 1) + '%'"></span></span>
                                </div>
                            </div>
                            <!-- Ridge Regression -->
                            <div class="flex items-center justify-between" x-show="item.models?.ridge_regression">
                                <div class="flex items-center gap-2">
                                    <div class="w-1.5 h-1.5 rounded-full bg-amber-400"></div>
                                    <span class="text-xs text-gray-300">Ridge Regression</span>
                                </div>
                                <div class="flex items-center gap-3">
                                    <span class="px-1.5 py-0.5 text-xs rounded"
                                          :class="(item.models?.ridge_regression?.prediction || '').toLowerCase() === 'bullish' ? 'bg-emerald-900/50 text-emerald-400' : 'bg-red-900/50 text-red-400'"
                                          x-text="item.models?.ridge_regression?.prediction || '-'"></span>
                                    <span class="text-xs text-gray-400" x-text="fmtPct(item.models?.ridge_regression?.magnitude)"></span>
                                    <span class="text-xs text-gray-500">R&sup2;: <span x-text="fmt(item.models?.ridge_regression?.r_squared, 3)"></span></span>
                                </div>
                            </div>
                        </div>
                    </div>

                    <!-- Feature Importance (Top 5) -->
                    <div class="mb-4" x-show="item.features && item.features.length > 0">
                        <p class="text-xs text-gray-500 mb-2">Top Feature Importance</p>
                        <div class="space-y-1.5">
                            <template x-for="f in (item.features || []).slice(0, 5)" :key="f.name">
                                <div class="flex items-center gap-2">
                                    <span class="text-xs text-gray-400 w-24 truncate" x-text="f.name"></span>
                                    <div class="flex-1 bg-gray-700 rounded-full h-1.5">
                                        <div class="h-1.5 rounded-full bg-koin-500/70 transition-all duration-300"
                                             :style="'width:' + Math.min((f.importance || 0) * 100, 100) + '%'"></div>
                                    </div>
                                    <span class="text-xs text-gray-500 w-10 text-right" x-text="fmt(f.importance * 100, 1) + '%'"></span>
                                </div>
                            </template>
                        </div>
                    </div>

                    <!-- Backtest Accuracy -->
                    <div x-show="item.backtest" class="bg-gray-900/50 border border-gray-700/50 rounded-lg p-3">
                        <div class="flex items-center justify-between">
                            <span class="text-xs text-gray-500">Backtest Accuracy</span>
                            <div class="flex items-center gap-3">
                                <span class="text-xs text-gray-300" x-show="item.backtest?.win_rate">
                                    WR: <span class="text-koin-400 font-medium" x-text="fmt(item.backtest.win_rate, 1) + '%'"></span>
                                </span>
                                <span class="text-xs text-gray-300" x-show="item.backtest?.total_trades">
                                    Trades: <span class="text-gray-400" x-text="item.backtest.total_trades"></span>
                                </span>
                                <span class="text-xs text-gray-300" x-show="item.backtest?.avg_return">
                                    Avg: <span :class="(item.backtest?.avg_return || 0) >= 0 ? 'text-emerald-400' : 'text-red-400'"
                                               x-text="fmtPct(item.backtest.avg_return)"></span>
                                </span>
                            </div>
                        </div>
                    </div>
                </div>
            </template>
        </div>
    </div>
</div>

<script>
function mlEnsembleApp() {
    return {
        loading: false, error: null, lastRefresh: null,
        items: [], filter: 'all',
        stats: { total: 0, bullish: 0, bearish: 0, avg_confidence: 0 },

        init() { this.fetchData(); },

        get filteredItems() {
            if (this.filter === 'all') return this.items;
            return this.items.filter(i => {
                const sig = (i.signal || '').toLowerCase();
                if (this.filter === 'strong_buy') return sig === 'strong_buy';
                if (this.filter === 'buy') return sig === 'buy';
                if (this.filter === 'sell') return sig === 'sell' || sig === 'strong_sell';
                return true;
            });
        },

        predictionClass(pred) {
            const p = (pred || '').toLowerCase();
            if (p === 'bullish') return 'bg-emerald-900/50 text-emerald-400';
            if (p === 'bearish') return 'bg-red-900/50 text-red-400';
            return 'bg-gray-700/50 text-gray-400';
        },

        signalBadgeClass(signal) {
            const s = (signal || '').toLowerCase();
            if (s === 'strong_buy') return 'bg-emerald-900/50 text-emerald-400';
            if (s === 'buy') return 'bg-green-900/50 text-green-400';
            if (s === 'sell') return 'bg-red-900/50 text-red-400';
            if (s === 'strong_sell') return 'bg-red-900/70 text-red-300';
            return 'bg-gray-700/50 text-gray-400';
        },

        async fetchData() {
            this.loading = true; this.error = null;
            try {
                const params = new URLSearchParams({ asset_type: '{{ asset_mode }}' });
                const res = await fetch(`/api/v1/market/ml-ensemble?${params}`);
                const json = await res.json();
                if (json.status === 'success') {
                    const d = json.data || {};
                    this.items = d.items || d.predictions || [];
                    const confs = this.items.map(i => i.confidence || 0);
                    this.stats = {
                        total: this.items.length,
                        bullish: this.items.filter(i => (i.ensemble_prediction || '').toLowerCase() === 'bullish').length,
                        bearish: this.items.filter(i => (i.ensemble_prediction || '').toLowerCase() === 'bearish').length,
                        avg_confidence: confs.length > 0 ? confs.reduce((a, b) => a + b, 0) / confs.length : 0,
                    };
                } else {
                    this.error = json.message || 'Failed to load data';
                }
            } catch (e) { this.error = e.message; }
            finally { this.loading = false; this.lastRefresh = new Date().toLocaleTimeString('id-ID'); }
        },

        fmt(n, d=2) { return n != null ? Number(n).toFixed(d) : '-'; },
        fmtPct(n) { return n != null ? (n >= 0 ? '+' : '') + Number(n).toFixed(2) + '%' : '-'; },
        fmtPrice(n) { return n != null ? 'Rp ' + Number(n).toLocaleString('id-ID') : '-'; },
    };
}
</script>
{% endblock %}