{% extends "base.html" %}
{% block title %}Alpha Generator{% endblock %}

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

    <!-- Header -->
    <div class="flex flex-col sm:flex-row sm:items-center sm:justify-between gap-4">
        <div class="flex items-center gap-3">
            <a href="{{ tools_base }}/" class="text-gray-500 hover:text-gray-300 transition">
                <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 19l-7-7 7-7"/></svg>
            </a>
            <div>
                <h1 class="text-2xl font-bold text-white flex items-center gap-2">
                    <div class="p-2 bg-rose-600/20 rounded-xl">
                        <span class="text-xl">&#x1F4C8;</span>
                    </div>
                    Alpha Generator
                </h1>
                <p class="text-sm text-gray-400 mt-0.5">Cari alpha terbaik &mdash; outperformance vs market, komponen alpha, dan perbandingan benchmark</p>
            </div>
        </div>
        <div class="flex items-center gap-2">
            <span class="text-xs text-gray-500" x-text="lastRefresh ? 'Updated: ' + lastRefresh : ''"></span>
            <button @click="fetchData()" :disabled="loading"
                    class="flex items-center gap-2 px-4 py-2 text-sm font-medium rounded-lg transition"
                    :class="loading ? 'bg-gray-800 text-gray-500 cursor-not-allowed' : 'bg-rose-600 hover:bg-rose-500 text-white'">
                <svg :class="loading && 'animate-spin'" class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 4v5h.582m15.356 2A8.001 8.001 0 004.582 9m0 0H9m11 11v-5h-.581m0 0a8.003 8.003 0 01-15.357-2m15.357 2H15"/>
                </svg>
                <span x-text="loading ? 'Loading...' : 'Refresh'"></span>
            </button>
        </div>
    </div>

    <!-- Stats Cards -->
    <div class="grid grid-cols-2 md:grid-cols-4 gap-4">
        <div class="glass rounded-xl border border-gray-800 p-4">
            <p class="text-xs text-gray-500 uppercase tracking-wider">Avg Alpha</p>
            <p class="text-2xl font-bold mt-1" :class="(stats.avg_alpha || 0) >= 0 ? 'text-emerald-400' : 'text-red-400'" x-text="stats.avg_alpha != null ? (stats.avg_alpha >= 0 ? '+' : '') + Number(stats.avg_alpha).toFixed(2) + '%' : '-'"></p>
            <p class="text-xs text-gray-600 mt-1">Rata-rata alpha</p>
        </div>
        <div class="glass rounded-xl border border-gray-800 p-4">
            <p class="text-xs text-gray-500 uppercase tracking-wider">Top Alpha</p>
            <p class="text-2xl font-bold text-rose-400 mt-1" x-text="stats.top_alpha != null ? '+' + Number(stats.top_alpha).toFixed(2) + '%' : '-'"></p>
            <p class="text-xs text-gray-600 mt-1">Alpha tertinggi</p>
        </div>
        <div class="glass rounded-xl border border-gray-800 p-4">
            <p class="text-xs text-gray-500 uppercase tracking-wider">Positive Alpha</p>
            <p class="text-2xl font-bold text-emerald-400 mt-1" x-text="stats.positive_alpha_count != null ? stats.positive_alpha_count : '0'"></p>
            <p class="text-xs text-gray-600 mt-1">Aset alpha positif</p>
        </div>
        <div class="glass rounded-xl border border-gray-800 p-4">
            <p class="text-xs text-gray-500 uppercase tracking-wider">Market Avg Score</p>
            <p class="text-2xl font-bold text-rose-400 mt-1" x-text="stats.market_avg_score != null ? Number(stats.market_avg_score).toFixed(1) : '-'"></p>
            <p class="text-xs text-gray-600 mt-1">Skor rata-rata pasar</p>
        </div>
    </div>

    <!-- Alpha Distribution Overview -->
    <div x-show="!loading && stats.alpha_distribution" x-cloak class="glass rounded-xl border border-gray-800 p-4">
        <p class="text-xs text-gray-500 uppercase tracking-wider mb-3">Alpha Distribution</p>
        <div class="grid grid-cols-5 gap-2">
            <div class="text-center p-2 rounded-lg bg-red-900/20 border border-red-800/30">
                <p class="text-[10px] text-red-400">&lt; -10%</p>
                <p class="text-lg font-bold text-red-400" x-text="stats.alpha_distribution?.very_negative || 0"></p>
            </div>
            <div class="text-center p-2 rounded-lg bg-orange-900/20 border border-orange-800/30">
                <p class="text-[10px] text-orange-400">-10% ~ 0%</p>
                <p class="text-lg font-bold text-orange-400" x-text="stats.alpha_distribution?.negative || 0"></p>
            </div>
            <div class="text-center p-2 rounded-lg bg-gray-800/50 border border-gray-700/30">
                <p class="text-[10px] text-gray-400">0% ~ 5%</p>
                <p class="text-lg font-bold text-gray-300" x-text="stats.alpha_distribution?.neutral || 0"></p>
            </div>
            <div class="text-center p-2 rounded-lg bg-emerald-900/20 border border-emerald-800/30">
                <p class="text-[10px] text-emerald-400">5% ~ 20%</p>
                <p class="text-lg font-bold text-emerald-400" x-text="stats.alpha_distribution?.positive || 0"></p>
            </div>
            <div class="text-center p-2 rounded-lg bg-rose-900/20 border border-rose-800/30">
                <p class="text-[10px] text-rose-400">&gt; 20%</p>
                <p class="text-lg font-bold text-rose-400" x-text="stats.alpha_distribution?.very_positive || 0"></p>
            </div>
        </div>
    </div>

    <!-- Filters Row -->
    <div class="flex flex-wrap items-center gap-3">
        <select x-model="filters.asset_type" @change="page=1; fetchData()"
                class="bg-gray-800 border border-gray-700 rounded-lg px-3 py-1.5 text-sm text-gray-300 focus:outline-none focus:ring-1 focus:ring-rose-500">
            <option value="crypto">Kripto</option>
            <option value="stock">Saham IDX</option>
            <option value="stock_us">Saham US</option>
        </select>
        <div class="flex items-center gap-2 bg-gray-800 border border-gray-700 rounded-lg px-3 py-1.5">
            <label class="text-xs text-gray-400">Min Alpha:</label>
            <input type="range" x-model="filters.min_alpha" min="-50" max="100" step="5" @change="page=1; fetchData()"
                   class="w-24 h-1 bg-gray-700 rounded-lg appearance-none cursor-pointer accent-rose-500">
            <span class="text-xs font-bold text-rose-400 tabular-nums w-12 text-right" x-text="filters.min_alpha + '%'"></span>
        </div>
        <select x-model="sortBy" @change="page=1; fetchData()"
                class="bg-gray-800 border border-gray-700 rounded-lg px-3 py-1.5 text-sm text-gray-300 focus:outline-none focus:ring-1 focus:ring-rose-500">
            <option value="alpha_score_desc">Alpha Score Tertinggi</option>
            <option value="alpha_pct_desc">Alpha % Tertinggi</option>
            <option value="outperformance_desc">Outperformance Terbaik</option>
            <option value="consistency_desc">Konsistensi Terbaik</option>
        </select>
        <div class="relative flex-1 min-w-[180px]">
            <svg class="absolute left-3 top-1/2 -translate-y-1/2 w-4 h-4 text-gray-500" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z"/>
            </svg>
            <input type="text" x-model="searchQ" @input.debounce.300ms="page=1; fetchData()"
                   placeholder="Cari simbol atau nama..."
                   class="w-full bg-gray-800 border border-gray-700 rounded-lg pl-9 pr-3 py-1.5 text-sm text-gray-300 placeholder-gray-500 focus:outline-none focus:ring-1 focus:ring-rose-500">
        </div>
    </div>

    <!-- Loading State -->
    <div x-show="loading" x-cloak class="text-center py-16">
        <svg class="animate-spin h-8 w-8 text-rose-500 mx-auto" fill="none" viewBox="0 0 24 24">
            <circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle>
            <path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4z"></path>
        </svg>
        <p class="text-gray-500 text-sm mt-3">Menganalisis alpha generation intelligence...</p>
    </div>

    <!-- Error State -->
    <div x-show="!loading && error" x-cloak class="bg-red-900/20 border border-red-800/50 rounded-xl p-4 flex items-center gap-3">
        <svg class="w-5 h-5 text-red-400 flex-shrink-0" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" d="M12 9v3.75m-9.303 3.376c-.866 1.5.217 3.374 1.948 3.374h14.71c1.73 0 2.813-1.874 1.948-3.374L13.949 3.378c-.866-1.5-3.032-1.5-3.898 0L2.697 16.126zM12 15.75h.007v.008H12v-.008z"/>
        </svg>
        <div>
            <p class="text-sm text-red-300 font-medium">Gagal memuat data alpha generator</p>
            <p class="text-xs text-red-400/70 mt-0.5" x-text="error"></p>
        </div>
        <button @click="fetchData()" class="ml-auto text-xs px-3 py-1 bg-red-800/50 hover:bg-red-700/50 text-red-300 rounded-lg transition">Retry</button>
    </div>

    <!-- Empty State -->
    <div x-show="!loading && !error && items.length === 0" x-cloak
         class="text-center py-16 glass rounded-xl border border-gray-800">
        <span class="text-4xl">&#x1F4C8;</span>
        <h3 class="mt-4 text-lg font-medium text-gray-400">Belum Ada Data Alpha</h3>
        <p class="mt-2 text-sm text-gray-600 max-w-md mx-auto">Belum ada data alpha generator yang tersedia. Pastikan pipeline analisis sudah dijalankan.</p>
    </div>

    <!-- Card List -->
    <div x-show="!loading && !error && items.length > 0" x-cloak class="space-y-3">
        <div class="flex items-center justify-between text-xs text-gray-500">
            <span x-text="'Menampilkan ' + items.length + ' dari ' + total + ' aset'"></span>
            <span x-text="'Halaman ' + page"></span>
        </div>

        <template x-for="(item, idx) in items" :key="item.asset_id || item.symbol || idx">
            <div class="glass rounded-xl border border-gray-800 p-4 hover:border-rose-700/50 transition">
                <div class="flex items-start gap-4">
                    <!-- Coin Info -->
                    <a :href="'/market/asset/' + (item.asset_id || '')" class="flex items-center gap-3 min-w-[140px] group">
                        <img :src="item.icon_url || (item.symbol ? __stockIconUrl(item.symbol) : '')" :data-symbol="item.symbol" class="w-9 h-9 rounded-full flex-shrink-0" loading="lazy" onerror="__iconError(this)" x-show="item.icon_url || item.symbol">
                        <span x-show="!item.icon_url && !item.symbol" class="w-9 h-9 rounded-full bg-gray-700 flex items-center justify-center text-sm text-gray-400 flex-shrink-0" x-text="(item.symbol || '?')[0].toUpperCase()"></span>
                        <div>
                            <p class="text-white font-semibold text-sm group-hover:text-rose-400 transition" x-text="(item.symbol || '-').toUpperCase()"></p>
                            <p class="text-[10px] text-gray-500 truncate max-w-[110px]" x-text="item.name || item.coin_name || ''"></p>
                        </div>
                    </a>

                    <!-- Alpha Score Gauge -->
                    <div class="flex flex-col items-center gap-1 min-w-[80px]">
                        <div class="px-4 py-2 rounded-xl text-center" :class="scoreBadgeBg(item.alpha_score)">
                            <p class="text-xl font-black tabular-nums" :class="scoreBadgeText(item.alpha_score)" x-text="item.alpha_score != null ? Number(item.alpha_score).toFixed(0) : '-'"></p>
                            <p class="text-[10px] font-semibold opacity-70" :class="scoreBadgeText(item.alpha_score)">ALPHA</p>
                        </div>
                    </div>

                    <!-- Alpha Components Breakdown -->
                    <div class="flex-1 min-w-[200px]">
                        <p class="text-[10px] text-gray-500 mb-2">Alpha Components</p>
                        <div class="space-y-1.5">
                            <div class="flex items-center gap-2">
                                <span class="text-[10px] text-gray-500 w-16">Momentum</span>
                                <div class="flex-1 bg-gray-800 rounded-full h-1.5 overflow-hidden">
                                    <div class="h-full bg-rose-500 rounded-full transition-all duration-500" :style="'width: ' + Math.min(item.alpha_momentum || 0, 100) + '%'"></div>
                                </div>
                                <span class="text-[10px] font-bold tabular-nums text-gray-400 w-8 text-right" x-text="item.alpha_momentum != null ? Number(item.alpha_momentum).toFixed(0) : '-'"></span>
                            </div>
                            <div class="flex items-center gap-2">
                                <span class="text-[10px] text-gray-500 w-16">Value</span>
                                <div class="flex-1 bg-gray-800 rounded-full h-1.5 overflow-hidden">
                                    <div class="h-full bg-blue-500 rounded-full transition-all duration-500" :style="'width: ' + Math.min(item.alpha_value || 0, 100) + '%'"></div>
                                </div>
                                <span class="text-[10px] font-bold tabular-nums text-gray-400 w-8 text-right" x-text="item.alpha_value != null ? Number(item.alpha_value).toFixed(0) : '-'"></span>
                            </div>
                            <div class="flex items-center gap-2">
                                <span class="text-[10px] text-gray-500 w-16">Quality</span>
                                <div class="flex-1 bg-gray-800 rounded-full h-1.5 overflow-hidden">
                                    <div class="h-full bg-emerald-500 rounded-full transition-all duration-500" :style="'width: ' + Math.min(item.alpha_quality || 0, 100) + '%'"></div>
                                </div>
                                <span class="text-[10px] font-bold tabular-nums text-gray-400 w-8 text-right" x-text="item.alpha_quality != null ? Number(item.alpha_quality).toFixed(0) : '-'"></span>
                            </div>
                            <div class="flex items-center gap-2">
                                <span class="text-[10px] text-gray-500 w-16">Volatility</span>
                                <div class="flex-1 bg-gray-800 rounded-full h-1.5 overflow-hidden">
                                    <div class="h-full bg-amber-500 rounded-full transition-all duration-500" :style="'width: ' + Math.min(item.alpha_volatility || 0, 100) + '%'"></div>
                                </div>
                                <span class="text-[10px] font-bold tabular-nums text-gray-400 w-8 text-right" x-text="item.alpha_volatility != null ? Number(item.alpha_volatility).toFixed(0) : '-'"></span>
                            </div>
                        </div>
                    </div>

                    <!-- Outperformance & Market Comparison -->
                    <div class="min-w-[120px]">
                        <p class="text-[10px] text-gray-500 mb-2">vs Market</p>
                        <div class="flex items-center gap-2 mb-2">
                            <svg class="w-5 h-5" :class="(item.outperformance_pct || 0) >= 0 ? 'text-emerald-400' : 'text-red-400 rotate-180'" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 10l7-7m0 0l7 7m-7-7v18"/></svg>
                            <span class="text-lg font-bold tabular-nums" :class="(item.outperformance_pct || 0) >= 0 ? 'text-emerald-400' : 'text-red-400'" x-text="fmtPct(item.outperformance_pct)"></span>
                        </div>
                        <div class="flex items-center justify-between">
                            <span class="text-[10px] text-gray-500">Consistency</span>
                            <span class="text-xs font-bold tabular-nums" :class="item.consistency >= 70 ? 'text-emerald-400' : item.consistency >= 40 ? 'text-rose-400' : 'text-red-400'" x-text="item.consistency != null ? Number(item.consistency).toFixed(0) + '%' : '-'"></span>
                        </div>
                        <div class="flex items-center justify-between mt-1">
                            <span class="text-[10px] text-gray-500">Win Rate</span>
                            <span class="text-xs font-bold tabular-nums text-rose-400" x-text="item.win_rate != null ? Number(item.win_rate).toFixed(0) + '%' : '-'"></span>
                        </div>
                    </div>
                </div>

                <!-- Bottom Details -->
                <div class="flex items-center gap-4 mt-3 pt-3 border-t border-gray-800/60 text-xs text-gray-500">
                    <span>Harga: <span class="text-white font-semibold tabular-nums" x-text="fmtPrice(item.current_price)"></span></span>
                    <span>Change: <span class="tabular-nums" :class="(item.change_pct || 0) >= 0 ? 'text-emerald-400' : 'text-red-400'" x-text="fmtPct(item.change_pct)"></span></span>
                    <span>Volume: <span class="text-gray-300 tabular-nums" x-text="formatCompact(item.volume)"></span></span>
                    <span>Sharpe: <span class="text-rose-400 tabular-nums" x-text="item.sharpe_ratio != null ? Number(item.sharpe_ratio).toFixed(2) : '-'"></span></span>
                    <span>Info Ratio: <span class="text-rose-400 tabular-nums" x-text="item.information_ratio != null ? Number(item.information_ratio).toFixed(2) : '-'"></span></span>
                </div>
            </div>
        </template>

        <!-- Pagination -->
        <div class="flex items-center justify-center gap-2 pt-4" x-show="total > 20">
            <button @click="page = Math.max(1, page - 1); fetchData()" :disabled="page <= 1" class="px-3 py-1.5 text-xs rounded-lg transition" :class="page <= 1 ? 'bg-gray-800 text-gray-600 cursor-not-allowed' : 'bg-gray-800 hover:bg-gray-700 text-gray-300'">&larr; Prev</button>
            <span class="text-xs text-gray-500" x-text="'Halaman ' + page + ' dari ' + Math.ceil(total / 20)"></span>
            <button @click="page++; fetchData()" :disabled="page >= Math.ceil(total / 20)" class="px-3 py-1.5 text-xs rounded-lg transition" :class="page >= Math.ceil(total / 20) ? 'bg-gray-800 text-gray-600 cursor-not-allowed' : 'bg-gray-800 hover:bg-gray-700 text-gray-300'">Next &rarr;</button>
        </div>
    </div>
</div>
{% endblock %}

{% block scripts %}
<script>
function alphaGeneratorPanel() {
    return {
        items: [],
        total: 0,
        loading: false,
        error: null,
        stats: {},
        filters: { asset_type: '{{ asset_mode }}', min_alpha: 0 },
        sortBy: 'alpha_score_desc',
        searchQ: '',
        page: 1,
        lastRefresh: null,

        async fetchData() {
            this.loading = true;
            this.error = null;
            try {
                const params = new URLSearchParams({
                    asset_type: this.filters.asset_type,
                    min_alpha: this.filters.min_alpha,
                    sort: this.sortBy,
                    limit: '20',
                    page: this.page,
                    q: this.searchQ
                });
                const r = await fetch(`/api/v1/market/screener/alpha-generator?${params}`);
                if (r.redirected) { window.location.href = '/auth/login'; return; }
                if (!r.ok) throw new Error(`HTTP ${r.status}: ${r.statusText}`);
                const d = await r.json();
                if (d.error) { this.error = d.error; this.items = []; return; }
                this.items = d.items || [];
                this.total = d.total || this.items.length;
                this.stats = d.stats || {};
                this.lastRefresh = new Date().toLocaleTimeString('id-ID');
            } catch(e) {
                this.error = e.message;
                this.items = [];
            } finally {
                this.loading = false;
            }
        },

        fmtPrice(v) {
            if (v == null || isNaN(v)) return '-';
            const val = Number(v);
            if (val === 0) return 'Rp 0';
            const abs = Math.abs(val);
            if (abs >= 1e9) return 'Rp ' + new Intl.NumberFormat('id-ID', {maximumFractionDigits: 1}).format(val / 1e9) + 'B';
            if (abs >= 100) return 'Rp ' + new Intl.NumberFormat('id-ID', {maximumFractionDigits: 0}).format(val);
            if (abs >= 1) return 'Rp ' + new Intl.NumberFormat('id-ID', {maximumFractionDigits: 2}).format(val);
            return 'Rp ' + new Intl.NumberFormat('id-ID', {maximumFractionDigits: 8}).format(val);
        },

        fmtPct(v) {
            return v != null ? (v >= 0 ? '+' : '') + Number(v).toFixed(1) + '%' : '-';
        },

        formatCompact(n) {
            if (n == null) return '-';
            const abs = Math.abs(n);
            if (abs >= 1e12) return (n/1e12).toFixed(1)+'T';
            if (abs >= 1e9) return (n/1e9).toFixed(1)+'B';
            if (abs >= 1e6) return (n/1e6).toFixed(1)+'M';
            if (abs >= 1e3) return (n/1e3).toFixed(1)+'K';
            return n.toLocaleString();
        },

        scoreBadgeBg(s) {
            if (s == null) return 'bg-gray-800';
            if (s >= 80) return 'bg-rose-900/50 border border-rose-700/50';
            if (s >= 60) return 'bg-rose-900/40 border border-rose-700/40';
            if (s >= 40) return 'bg-pink-900/40 border border-pink-700/40';
            return 'bg-gray-800 border border-gray-700';
        },

        scoreBadgeText(s) {
            if (s == null) return 'text-gray-400';
            if (s >= 80) return 'text-rose-300';
            if (s >= 60) return 'text-rose-400';
            if (s >= 40) return 'text-pink-400';
            return 'text-gray-400';
        }
    };
}
</script>
{% endblock %}