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

{% block content %}
<div x-data="alphaDecayPanel()" 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">⏱️</span>
                    </div>
                    Alpha Decay Monitor
                </h1>
                <p class="text-sm text-gray-400 mt-0.5">Pantau tingkat keusangan sinyal trading — identifikasi sinyal yang perlu di-rescan</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">Total Tracked</p>
            <p class="text-2xl font-bold text-white mt-1" x-text="stats.total_tracked || 0"></p>
            <p class="text-xs text-gray-600 mt-1">Sinyal terpantau</p>
        </div>
        <div class="glass rounded-xl border border-gray-800 p-4">
            <p class="text-xs text-gray-500 uppercase tracking-wider">Fresh Signals</p>
            <p class="text-2xl font-bold text-emerald-400 mt-1" x-text="stats.fresh_signals || 0"></p>
            <p class="text-xs text-gray-600 mt-1">Masih valid &amp; segar</p>
        </div>
        <div class="glass rounded-xl border border-gray-800 p-4">
            <p class="text-xs text-gray-500 uppercase tracking-wider">Stale Signals</p>
            <p class="text-2xl font-bold text-red-400 mt-1" x-text="stats.stale_signals || 0"></p>
            <p class="text-xs text-gray-600 mt-1">Perlu di-rescan</p>
        </div>
        <div class="glass rounded-xl border border-gray-800 p-4">
            <p class="text-xs text-gray-500 uppercase tracking-wider">Avg Freshness</p>
            <p class="text-2xl font-bold text-rose-400 mt-1" x-text="stats.avg_freshness != null ? Number(stats.avg_freshness).toFixed(0) + '%' : '-'"></p>
            <p class="text-xs text-gray-600 mt-1">Rata-rata kesegaran</p>
        </div>
    </div>

    <!-- Filters Row -->
    <div class="flex flex-wrap items-center gap-3">
        <select x-model="filters.asset_type" @change="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>

        <select x-model="filters.alert_level" @change="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="all">Semua Level</option>
            <option value="fresh">Fresh</option>
            <option value="aging">Aging</option>
            <option value="stale">Stale</option>
            <option value="expired">Expired</option>
        </select>

        <select x-model="sortBy" @change="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="freshness_asc">Paling Usang</option>
            <option value="freshness_desc">Paling Segar</option>
            <option value="age_desc">Terlama</option>
            <option value="score">Skor</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="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 decay sinyal...</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 decay</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">⏱️</span>
        <h3 class="mt-4 text-lg font-medium text-gray-400">Belum Ada Data Alpha Decay</h3>
        <p class="mt-2 text-sm text-gray-600 max-w-md mx-auto">
            Pastikan sinyal trading sudah tersedia dan endpoint alpha decay aktif.
        </p>
    </div>

    <!-- Stale Alert Banner -->
    <div x-show="!loading && !error && (stats.stale_signals || 0) > 0" x-cloak
         class="bg-rose-900/20 border border-rose-700/50 rounded-xl p-4">
        <div class="flex items-center gap-2 mb-1">
            <svg class="w-5 h-5 text-rose-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 16.126z"/>
            </svg>
            <h3 class="text-sm font-semibold text-rose-300">Peringatan: Sinyal Usang Terdeteksi</h3>
        </div>
        <p class="text-xs text-gray-400">
            <span class="text-rose-300 font-bold" x-text="stats.stale_signals || 0"></span> sinyal sudah stale/expired dan memerlukan rescan segera untuk akurasi analisis.
        </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 + ' sinyal'"></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"
                 :class="item.alert_level === 'expired' ? 'border-red-800/60' : item.alert_level === 'stale' ? 'border-rose-800/40' : ''">
                <div class="flex items-start gap-4">
                    <!-- Coin Info -->
                    <a :href="'/market/asset/' + (item.asset_id || '')" class="flex items-center gap-3 min-w-[150px] 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-[120px]" x-text="item.name || item.coin_name || ''"></p>
                        </div>
                    </a>

                    <!-- Freshness Score Bar (green -> red gradient) -->
                    <div class="flex-1">
                        <div class="flex items-center justify-between mb-1.5">
                            <span class="text-xs text-gray-500">Freshness Score</span>
                            <span class="text-sm font-bold tabular-nums"
                                  :class="freshnessColor(item.freshness_score)"
                                  x-text="item.freshness_score != null ? Number(item.freshness_score).toFixed(0) + '%' : '-'"></span>
                        </div>
                        <div class="w-full bg-gray-800 rounded-full h-3 overflow-hidden relative">
                            <!-- Gradient bar from green to red based on score -->
                            <div class="h-full rounded-full transition-all duration-700 relative"
                                 :style="'width: ' + Math.min(item.freshness_score || 0, 100) + '%; background: linear-gradient(90deg, ' + freshnessGradient(item.freshness_score) + ')'"></div>
                        </div>
                    </div>

                    <!-- Signal Age -->
                    <div class="flex flex-col items-center gap-1 min-w-[80px]">
                        <span class="text-xs text-gray-500">Usia Sinyal</span>
                        <span class="text-lg font-bold tabular-nums"
                              :class="(item.signal_age_hours || 0) > 48 ? 'text-red-400' : (item.signal_age_hours || 0) > 24 ? 'text-amber-400' : 'text-emerald-400'"
                              x-text="item.signal_age_hours != null ? formatAge(item.signal_age_hours) : '-'"></span>
                    </div>

                    <!-- Alert Level Badge -->
                    <div class="flex flex-col items-center gap-1.5 min-w-[80px]">
                        <span class="text-[10px] px-2.5 py-1 rounded-full font-bold uppercase tracking-wider whitespace-nowrap"
                              :class="alertBadge(item.alert_level)"
                              x-text="item.alert_level || 'unknown'"></span>
                        <!-- Needs rescan warning -->
                        <span x-show="item.alert_level === 'stale' || item.alert_level === 'expired'"
                              class="text-[10px] text-rose-400 font-medium flex items-center gap-1 animate-pulse">
                            <svg class="w-3 h-3" 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 16.126z"/>
                            </svg>
                            Perlu Rescan
                        </span>
                    </div>
                </div>

                <!-- Bottom Details Row -->
                <div class="flex items-center gap-4 mt-3 pt-3 border-t border-gray-800/60 text-xs text-gray-500">
                    <span>Signal Type: <span class="text-gray-300" x-text="item.signal_type || '-'"></span></span>
                    <span>Generated: <span class="text-gray-300" x-text="item.generated_at || '-'"></span></span>
                    <span>Confidence: <span class="text-rose-400 font-semibold tabular-nums" x-text="item.confidence != null ? Number(item.confidence).toFixed(0) + '%' : '-'"></span></span>
                    <span>Decay Rate: <span class="text-gray-300 tabular-nums" x-text="item.decay_rate != null ? Number(item.decay_rate).toFixed(2) + '/hr' : '-'"></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 alphaDecayPanel() {
    return {
        items: [], total: 0, loading: false, error: null,
        stats: {},
        filters: { asset_type: '{{ asset_mode }}', alert_level: 'all' },
        sortBy: 'freshness_asc', searchQ: '', page: 1,
        lastRefresh: null,

        async fetchData() {
            this.loading = true; this.error = null;
            try {
                const params = new URLSearchParams({
                    asset_type: this.filters.asset_type,
                    alert_level: this.filters.alert_level,
                    sort: this.sortBy,
                    limit: '20',
                    page: this.page,
                    q: this.searchQ
                });
                const r = await fetch(`/api/v1/market/alpha-decay?${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) { return v ? 'Rp ' + Number(v).toLocaleString('id-ID') : '-'; },
        fmtPct(v) { return v != null ? (v >= 0 ? '+' : '') + Number(v).toFixed(1) + '%' : '-'; },

        freshnessColor(score) {
            if (score == null) return 'text-gray-400';
            if (score >= 80) return 'text-emerald-400';
            if (score >= 60) return 'text-lime-400';
            if (score >= 40) return 'text-amber-400';
            if (score >= 20) return 'text-orange-400';
            return 'text-red-400';
        },

        freshnessGradient(score) {
            if (score == null || score <= 0) return '#ef4444, #ef4444';
            if (score >= 80) return '#10b981, #34d399';
            if (score >= 60) return '#f59e0b, #84cc16';
            if (score >= 40) return '#f97316, #f59e0b';
            if (score >= 20) return '#ef4444, #f97316';
            return '#dc2626, #ef4444';
        },

        formatAge(hours) {
            if (hours == null) return '-';
            if (hours < 1) return Math.round(hours * 60) + 'm';
            if (hours < 24) return Number(hours).toFixed(1) + 'h';
            const days = Math.floor(hours / 24);
            const rem = Math.round(hours % 24);
            return days + 'd ' + rem + 'h';
        },

        alertBadge(level) {
            const l = (level || '').toLowerCase();
            if (l === 'fresh') return 'bg-emerald-900/60 text-emerald-300 border border-emerald-700/50';
            if (l === 'aging') return 'bg-amber-900/60 text-amber-300 border border-amber-700/50';
            if (l === 'stale') return 'bg-orange-900/60 text-orange-300 border border-orange-700/50';
            if (l === 'expired') return 'bg-red-900/60 text-red-300 border border-red-700/50';
            return 'bg-gray-700 text-gray-400 border border-gray-600';
        }
    };
}
</script>
{% endblock %}