{% extends "base.html" %}
{% block title %}Trend Reversal Detector{% endblock %}

{% block content %}
<div x-data="trendReversalPanel()" x-init="fetchData()" class="space-y-5">
    <!-- Header -->
    <div class="flex items-center justify-between flex-wrap gap-3">
        <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">
                    <svg class="w-6 h-6 text-cyan-400" fill="none" stroke="currentColor" stroke-width="1.5" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" d="M7.5 21L3 16.5m0 0L7.5 12M3 16.5h13.5m0-13.5L21 7.5m0 0L16.5 12M21 7.5H7.5"/></svg>
                    Trend Reversal Detector
                </h1>
                <p class="text-sm text-gray-500 mt-0.5">Deteksi potensi pembalikan trend berdasarkan divergence, zona ekstrem, dan sinyal perubahan arah.</p>
            </div>
        </div>
        <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-cyan-600 hover:bg-cyan-700 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>

    <!-- Stats Summary -->
    <div class="grid grid-cols-2 md:grid-cols-4 gap-3">
        <div class="glass rounded-xl border border-gray-800 p-3">
            <p class="text-xs text-gray-500 uppercase tracking-wider">Bullish Reversal</p>
            <p class="text-xl font-bold text-emerald-400 mt-1" x-text="stats.bullish_reversal_count"></p>
        </div>
        <div class="glass rounded-xl border border-gray-800 p-3">
            <p class="text-xs text-gray-500 uppercase tracking-wider">Bearish Reversal</p>
            <p class="text-xl font-bold text-red-400 mt-1" x-text="stats.bearish_reversal_count"></p>
        </div>
        <div class="glass rounded-xl border border-gray-800 p-3">
            <p class="text-xs text-gray-500 uppercase tracking-wider">Confirmed</p>
            <p class="text-xl font-bold text-cyan-400 mt-1" x-text="stats.confirmed_count"></p>
        </div>
        <div class="glass rounded-xl border border-gray-800 p-3">
            <p class="text-xs text-gray-500 uppercase tracking-wider">Avg Score</p>
            <p class="text-xl font-bold text-cyan-300 mt-1" x-text="stats.avg_reversal_score != null ? stats.avg_reversal_score.toFixed(1) : '0'"></p>
        </div>
    </div>

    <!-- Filters & Sort -->
    <div class="flex flex-wrap items-center gap-2">
        <!-- Signal Type Filter -->
        <select x-model="filters.signal_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-cyan-500">
            <option value="all">Semua Signal</option>
            <option value="bullish_reversal">Bullish Reversal</option>
            <option value="bearish_reversal">Bearish Reversal</option>
            <option value="continuation">Continuation</option>
            <option value="no_signal">No Signal</option>
        </select>

        <!-- Sort -->
        <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-cyan-500">
            <option value="reversal_desc">Skor Tertinggi</option>
            <option value="name_asc">Nama A-Z</option>
        </select>

        <!-- Search -->
        <div class="relative flex-1 min-w-[160px]">
            <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 koin/saham..."
                   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-cyan-500">
        </div>
    </div>

    <!-- Loading State -->
    <div x-show="loading" x-cloak class="text-center py-12">
        <svg class="animate-spin h-8 w-8 text-cyan-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">Mendeteksi potensi reversal...</p>
    </div>

    <!-- Empty State -->
    <div x-show="!loading && items.length === 0" x-cloak
         class="text-center py-16 glass rounded-xl border border-gray-800">
        <svg class="mx-auto h-12 w-12 text-gray-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5" d="M7.5 21L3 16.5m0 0L7.5 12M3 16.5h13.5m0-13.5L21 7.5m0 0L16.5 12M21 7.5H7.5"/>
        </svg>
        <h3 class="mt-4 text-lg font-medium text-gray-400">Belum Ada Data Reversal</h3>
        <p class="mt-2 text-sm text-gray-600 max-w-md mx-auto">
            Jalankan semua scan (Range Trading, Bullish, ML Signals) di
            <a href="/admin/workflow" class="text-cyan-400 hover:text-cyan-300">Pipeline Workflow</a>
            terlebih dahulu.
        </p>
    </div>

    <!-- Cards Grid -->
    <div x-show="!loading && items.length > 0" x-cloak class="grid grid-cols-1 lg:grid-cols-2 gap-4">
        <template x-for="(item, idx) in items" :key="item.asset_id">
            <div class="glass rounded-xl border overflow-hidden animate-fadeIn transition"
                 :class="signalBorderClass(item.signal_type)"
                 :style="'animation-delay: ' + (idx * 50) + 'ms'">

                <!-- Card Header -->
                <div class="p-4 pb-3">
                    <div class="flex items-center justify-between">
                        <a :href="'/market/asset/' + item.asset_id" class="flex items-center gap-3 group">
                            <img :src="item.icon_thumb_url || (item.asset_type==='stock' && item.symbol ? __stockIconUrl(item.symbol) : '')" :data-symbol="item.symbol" class="w-10 h-10 rounded-full flex-shrink-0" loading="lazy" onerror="__iconError(this)" x-show="item.icon_thumb_url || item.asset_type==='stock'">
                            <span x-show="!item.icon_thumb_url && item.asset_type!=='stock'" class="w-10 h-10 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>
                                <span class="text-white font-semibold group-hover:text-cyan-400 transition" x-text="item.name"></span>
                                <div class="flex items-center gap-2 mt-0.5">
                                    <span class="text-xs text-gray-500 font-mono" x-text="item.symbol.toUpperCase()"></span>
                                    <!-- Signal type badge -->
                                    <span class="text-[10px] px-1.5 py-0.5 rounded font-semibold uppercase tracking-wider"
                                          :class="signalBadgeClass(item.signal_type)"
                                          x-text="signalLabel(item.signal_type)"></span>
                                </div>
                            </div>
                        </a>
                        <!-- Score -->
                        <div class="text-right">
                            <div class="text-2xl font-bold tabular-nums"
                                 :class="item.reversal_score >= 75 ? 'text-cyan-400' :
                                         item.reversal_score >= 55 ? 'text-cyan-300' :
                                         item.reversal_score >= 35 ? 'text-gray-300' : 'text-gray-500'"
                                 x-text="item.reversal_score.toFixed(1)"></div>
                            <div class="text-[10px] text-gray-500 uppercase" x-text="item.confirmation"></div>
                        </div>
                    </div>
                    <!-- Price Row -->
                    <div class="flex items-center justify-between mt-2 text-sm">
                        <span class="text-gray-400" x-text="item.current_price_idr ? 'Rp ' + formatNumber(item.current_price_idr) : '-'"></span>
                        <div class="flex items-center gap-3 text-xs">
                            <span :class="(item.price_change_24h || 0) >= 0 ? 'text-emerald-400' : 'text-red-400'"
                                  x-text="item.price_change_24h != null ? (item.price_change_24h >= 0 ? '+' : '') + item.price_change_24h.toFixed(2) + '%' : ''">
                            </span>
                            <span class="text-gray-600">24h</span>
                            <span :class="(item.price_change_7d || 0) >= 0 ? 'text-emerald-400' : 'text-red-400'"
                                  x-text="item.price_change_7d != null ? (item.price_change_7d >= 0 ? '+' : '') + item.price_change_7d.toFixed(2) + '%' : ''">
                            </span>
                            <span class="text-gray-600">7d</span>
                        </div>
                    </div>
                </div>

                <!-- Reversal Metrics Box -->
                <div class="mx-4 mb-3 bg-cyan-950/20 border border-cyan-900/30 rounded-lg p-3">
                    <div class="text-[10px] font-semibold text-cyan-500 uppercase tracking-wider mb-2">Reversal Analysis</div>
                    <div class="grid grid-cols-3 gap-2 text-center">
                        <div>
                            <div class="text-[10px] text-gray-500">Divergence</div>
                            <div class="text-sm font-medium"
                                 :class="item.divergence_type === 'positive' ? 'text-emerald-300' : item.divergence_type === 'negative' ? 'text-red-300' : 'text-gray-500'"
                                 x-text="item.divergence_type !== 'none' ? item.divergence_type.charAt(0).toUpperCase() + item.divergence_type.slice(1) : 'None'"></div>
                        </div>
                        <div>
                            <div class="text-[10px] text-gray-500">Zone</div>
                            <div class="text-sm font-medium"
                                 :class="item.extreme_zone === 'oversold' ? 'text-emerald-300' : item.extreme_zone === 'overbought' ? 'text-red-300' : 'text-gray-400'"
                                 x-text="item.extreme_zone ? item.extreme_zone.charAt(0).toUpperCase() + item.extreme_zone.slice(1) : 'Neutral'"></div>
                        </div>
                        <div>
                            <div class="text-[10px] text-gray-500">Range Pos</div>
                            <div class="text-sm font-medium"
                                 :class="item.range_position != null ? (item.range_position > 70 ? 'text-red-300' : item.range_position < 30 ? 'text-emerald-300' : 'text-gray-300') : 'text-gray-600'"
                                 x-text="item.range_position != null ? item.range_position.toFixed(0) + '%' : '-'"></div>
                        </div>
                    </div>
                    <!-- Indicators Row -->
                    <div class="flex justify-between mt-2 text-[10px] text-gray-500">
                        <span x-text="item.rsi_latest != null ? 'RSI: ' + item.rsi_latest.toFixed(1) : ''"></span>
                        <span x-text="item.zscore != null ? 'Z: ' + item.zscore.toFixed(2) : ''"></span>
                        <span x-show="item.volume_surge" class="text-amber-400 font-semibold">Volume Surge</span>
                    </div>
                </div>

                <!-- Score Components Breakdown -->
                <div class="mx-4 mb-3">
                    <div class="text-[10px] font-semibold text-gray-500 uppercase tracking-wider mb-2">Skor Komponen</div>
                    <div class="space-y-1.5">
                        <template x-for="comp in componentList(item)" :key="comp.key">
                            <div class="flex items-center gap-2">
                                <span class="text-[10px] text-gray-400 w-28 truncate" x-text="comp.label"></span>
                                <div class="flex-1 h-2 bg-gray-800 rounded-full overflow-hidden">
                                    <div class="h-full rounded-full transition-all duration-500"
                                         :class="comp.color"
                                         :style="'width: ' + (comp.value / comp.max * 100) + '%'"></div>
                                </div>
                                <span class="text-[10px] text-gray-400 w-12 text-right tabular-nums"
                                      x-text="comp.value.toFixed(1) + '/' + comp.max"></span>
                            </div>
                        </template>
                    </div>
                </div>

                <!-- Bottom Metrics Row -->
                <div class="px-4 pb-3">
                    <div class="grid grid-cols-4 gap-2 text-center">
                        <div class="bg-gray-800/50 rounded-lg py-1.5">
                            <div class="text-[10px] text-gray-500">Regime</div>
                            <div class="text-[11px] text-white font-medium truncate px-1" x-text="item.regime || '-'"></div>
                        </div>
                        <div class="bg-gray-800/50 rounded-lg py-1.5">
                            <div class="text-[10px] text-gray-500">Momentum</div>
                            <div class="text-[11px] font-medium truncate px-1"
                                 :class="item.momentum_state && item.momentum_state.includes('UP') ? 'text-emerald-400' : item.momentum_state && item.momentum_state.includes('DOWN') ? 'text-red-400' : 'text-gray-400'"
                                 x-text="shortMomentum(item.momentum_state)"></div>
                        </div>
                        <div class="bg-gray-800/50 rounded-lg py-1.5">
                            <div class="text-[10px] text-gray-500">ML Trend</div>
                            <div class="text-[11px] font-medium capitalize"
                                 :class="item.ml_trend === 'bullish' ? 'text-emerald-400' : item.ml_trend === 'bearish' ? 'text-red-400' : 'text-gray-400'"
                                 x-text="item.ml_trend || '-'"></div>
                        </div>
                        <div class="bg-gray-800/50 rounded-lg py-1.5">
                            <div class="text-[10px] text-gray-500">Dir Shift</div>
                            <div class="text-[11px] font-medium"
                                 :class="item.direction_shift ? 'text-amber-400' : 'text-gray-500'"
                                 x-text="item.direction_shift ? 'Yes' : 'No'"></div>
                        </div>
                    </div>

                    <!-- Data Sources -->
                    <div class="flex items-center justify-between mt-2">
                        <div class="flex gap-1">
                            <span x-show="item.data_sources?.range_trading" class="text-[10px] px-1.5 py-0.5 rounded bg-pink-900/30 text-pink-400 border border-pink-900/30">Range</span>
                            <span x-show="item.data_sources?.bullish_momentum" class="text-[10px] px-1.5 py-0.5 rounded bg-blue-900/30 text-blue-400 border border-blue-900/30">Bullish</span>
                            <span x-show="item.data_sources?.trading_signal" class="text-[10px] px-1.5 py-0.5 rounded bg-purple-900/30 text-purple-400 border border-purple-900/30">Signal</span>
                        </div>
                        <span class="text-[10px] px-1.5 py-0.5 rounded font-semibold"
                              :class="confirmBadgeClass(item.confirmation)"
                              x-text="item.confirmation"></span>
                    </div>
                </div>
            </div>
        </template>
    </div>

    <!-- Load More -->
    <div x-show="!loading && hasMore" x-cloak class="text-center pt-2 pb-4">
        <button @click="loadMore()" :disabled="loadingMore"
                class="px-6 py-2 text-sm font-medium rounded-lg bg-gray-800 border border-gray-700 text-gray-300 hover:bg-gray-700 transition">
            <span x-text="loadingMore ? 'Loading...' : 'Muat Lebih Banyak (' + (total - items.length) + ' lagi)'"></span>
        </button>
    </div>
</div>
{% endblock %}

{% block scripts %}
<script>
function trendReversalPanel() {
    return {
        items: [],
        loading: false,
        loadingMore: false,
        total: 0,
        hasMore: false,
        page: 1,
        filters: {
            signal_type: 'all',
        },
        sortBy: 'reversal_desc',
        searchQ: '',
        stats: { bullish_reversal_count: 0, bearish_reversal_count: 0, confirmed_count: 0, avg_reversal_score: 0 },

        async fetchData() {
            this.page = 1;
            this.loading = true;
            try {
                const data = await this._fetch(1);
                this.items = data.items || [];
                this.total = data.total || 0;
                this.hasMore = data.has_more || false;
                this.stats = data.stats || this.stats;
            } catch (e) {
                console.error('Fetch error:', e);
            } finally {
                this.loading = false;
            }
        },

        async loadMore() {
            this.page++;
            this.loadingMore = true;
            try {
                const data = await this._fetch(this.page);
                this.items = this.items.concat(data.items || []);
                this.hasMore = data.has_more || false;
                if (data.stats) this.stats = data.stats;
            } catch (e) {
                console.error('Load more error:', e);
                this.page--;
            } finally {
                this.loadingMore = false;
            }
        },

        async _fetch(page) {
            const params = new URLSearchParams({
                signal_type: this.filters.signal_type,
                sort: this.sortBy,
                limit: 20,
                page: page,
                q: this.searchQ,
                asset_type: '{{ asset_mode }}',
            });
            const resp = await fetch(`/api/v1/market/screener/trend-reversal?${params}`);
            if (resp.redirected) { window.location.href = '/auth/login'; return {}; }
            if (!resp.ok) throw new Error(`HTTP ${resp.status}`);
            return await resp.json();
        },

        signalBorderClass(type) {
            return {
                'BULLISH_REVERSAL': 'border-emerald-800/60 hover:border-emerald-700',
                'BEARISH_REVERSAL': 'border-red-800/60 hover:border-red-700',
                'CONTINUATION': 'border-cyan-800/60 hover:border-cyan-700',
                'NO_SIGNAL': 'border-gray-800 hover:border-gray-700',
            }[type] || 'border-gray-800 hover:border-gray-700';
        },

        signalBadgeClass(type) {
            return {
                'BULLISH_REVERSAL': 'bg-emerald-900/50 text-emerald-400 border border-emerald-800/50',
                'BEARISH_REVERSAL': 'bg-red-900/50 text-red-400 border border-red-800/50',
                'CONTINUATION': 'bg-cyan-900/50 text-cyan-400 border border-cyan-800/50',
                'NO_SIGNAL': 'bg-gray-800 text-gray-400 border border-gray-700',
            }[type] || 'bg-gray-800 text-gray-500';
        },

        signalLabel(type) {
            return {
                'BULLISH_REVERSAL': 'Bullish Rev',
                'BEARISH_REVERSAL': 'Bearish Rev',
                'CONTINUATION': 'Continuation',
                'NO_SIGNAL': 'No Signal',
            }[type] || type;
        },

        confirmBadgeClass(conf) {
            return {
                'CONFIRMED': 'bg-cyan-900/50 text-cyan-300 border border-cyan-800/50',
                'PROBABLE': 'bg-amber-900/50 text-amber-300 border border-amber-800/50',
                'EARLY': 'bg-gray-800 text-gray-300 border border-gray-700',
                'NO_SIGNAL': 'bg-gray-800 text-gray-500 border border-gray-700',
            }[conf] || 'bg-gray-800 text-gray-500';
        },

        componentList(item) {
            const c = item.components || {};
            return [
                { key: 'divergence', label: 'Divergence', value: c.divergence || 0, max: 30, color: 'bg-cyan-500' },
                { key: 'extreme_zone', label: 'Extreme Zone', value: c.extreme_zone || 0, max: 25, color: 'bg-amber-500' },
                { key: 'signal_shift', label: 'Signal Shift', value: c.signal_shift || 0, max: 25, color: 'bg-purple-500' },
                { key: 'volume_confirm', label: 'Volume Confirm', value: c.volume_confirm || 0, max: 20, color: 'bg-emerald-500' },
            ];
        },

        shortMomentum(state) {
            if (!state) return '-';
            const map = {
                'ACCELERATING_UP': 'Accel Up', 'REVERSING_UP': 'Rev Up',
                'DECELERATING_UP': 'Decel Up', 'STABLE': 'Stable',
                'DECELERATING_DOWN': 'Decel Down', 'ACCELERATING_DOWN': 'Accel Down',
                'REVERSING_DOWN': 'Rev Down',
            };
            return map[state] || state;
        },

        formatNumber(val) {
            if (val == null || isNaN(val)) return '-';
            const v = Number(val);
            if (v === 0) return '0';
            const abs = Math.abs(v);
            if (abs >= 1_000_000_000_000) return new Intl.NumberFormat('id-ID', {maximumFractionDigits: 1}).format(v / 1_000_000_000_000) + 'T';
            if (abs >= 1_000_000_000) return new Intl.NumberFormat('id-ID', {maximumFractionDigits: 1}).format(v / 1_000_000_000) + 'B';
            if (abs >= 100) return new Intl.NumberFormat('id-ID', {maximumFractionDigits: 0}).format(v);
            if (abs >= 1) return new Intl.NumberFormat('id-ID', {maximumFractionDigits: 2}).format(v);
            if (abs >= 0.01) return new Intl.NumberFormat('id-ID', {maximumFractionDigits: 4}).format(v);
            return new Intl.NumberFormat('id-ID', {maximumFractionDigits: 8}).format(v);
        },
    };
}
</script>
{% endblock %}