{% extends "base.html" %}
{% block title %}Divergence Scanner{% endblock %}

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

    <!-- Header -->
    <div class="flex flex-col sm:flex-row sm:items-center justify-between gap-4">
        <div>
            <h1 class="text-2xl font-bold text-white flex items-center gap-3">
                <div class="p-2 bg-koin-600/20 rounded-xl">
                    <svg class="w-6 h-6 text-koin-400" fill="none" stroke="currentColor" stroke-width="2" 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>
                </div>
                Divergence Scanner
            </h1>
            <p class="text-gray-400 text-sm mt-1">Detect RSI, MACD, OBV and Volume divergences across all assets</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-4 py-2 bg-koin-600 hover:bg-koin-500 text-white text-sm font-medium rounded-lg transition disabled:opacity-50 flex items-center gap-2">
                <svg x-show="loading" class="w-4 h-4 animate-spin" 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 12h4z"/></svg>
                <span x-text="loading ? 'Scanning...' : 'Refresh'"></span>
            </button>
        </div>
    </div>

    <!-- Loading -->
    <div x-show="loading && items.length === 0" x-cloak 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">Scanning for divergences...</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 || items.length > 0" 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">
                <div class="text-xs text-gray-400 uppercase tracking-wider">Total Scanned</div>
                <div class="text-2xl font-bold text-white mt-1" x-text="items.length"></div>
            </div>
            <div class="bg-gray-800 border border-emerald-700/30 rounded-xl p-4">
                <div class="text-xs text-gray-400 uppercase tracking-wider">Bullish Divergences</div>
                <div class="text-2xl font-bold text-emerald-400 mt-1" x-text="bullishCount"></div>
            </div>
            <div class="bg-gray-800 border border-red-700/30 rounded-xl p-4">
                <div class="text-xs text-gray-400 uppercase tracking-wider">Bearish Divergences</div>
                <div class="text-2xl font-bold text-red-400 mt-1" x-text="bearishCount"></div>
            </div>
            <div class="bg-gray-800 border border-koin-700/30 rounded-xl p-4">
                <div class="text-xs text-gray-400 uppercase tracking-wider">Avg Strength</div>
                <div class="text-2xl font-bold text-koin-400 mt-1" x-text="fmt(avgStrength, 1)"></div>
            </div>
        </div>

        <!-- Divergence Type Distribution -->
        <template x-if="items.length > 0">
            <div class="bg-gray-800 border border-gray-700 rounded-xl p-5 mb-6">
                <h3 class="text-sm font-semibold text-gray-300 uppercase tracking-wider mb-4">Divergence Type Distribution</h3>
                <div class="grid grid-cols-2 sm:grid-cols-4 gap-3">
                    <div class="bg-emerald-900/20 border border-emerald-800/30 rounded-lg p-3 text-center">
                        <div class="text-[10px] text-gray-400 uppercase">Regular Bullish</div>
                        <div class="text-xl font-bold text-emerald-400 mt-1" x-text="typeCount('regular_bullish')"></div>
                    </div>
                    <div class="bg-red-900/20 border border-red-800/30 rounded-lg p-3 text-center">
                        <div class="text-[10px] text-gray-400 uppercase">Regular Bearish</div>
                        <div class="text-xl font-bold text-red-400 mt-1" x-text="typeCount('regular_bearish')"></div>
                    </div>
                    <div class="bg-blue-900/20 border border-blue-800/30 rounded-lg p-3 text-center">
                        <div class="text-[10px] text-gray-400 uppercase">Hidden Bullish</div>
                        <div class="text-xl font-bold text-blue-400 mt-1" x-text="typeCount('hidden_bullish')"></div>
                    </div>
                    <div class="bg-purple-900/20 border border-purple-800/30 rounded-lg p-3 text-center">
                        <div class="text-[10px] text-gray-400 uppercase">Hidden Bearish</div>
                        <div class="text-xl font-bold text-purple-400 mt-1" x-text="typeCount('hidden_bearish')"></div>
                    </div>
                </div>
                <!-- Stacked bar -->
                <div class="mt-4 flex h-3 rounded-full overflow-hidden bg-gray-700">
                    <div class="h-full bg-emerald-500 transition-all" :style="'width:' + typePct('regular_bullish') + '%'"></div>
                    <div class="h-full bg-red-500 transition-all" :style="'width:' + typePct('regular_bearish') + '%'"></div>
                    <div class="h-full bg-blue-500 transition-all" :style="'width:' + typePct('hidden_bullish') + '%'"></div>
                    <div class="h-full bg-purple-500 transition-all" :style="'width:' + typePct('hidden_bearish') + '%'"></div>
                </div>
                <div class="flex flex-wrap gap-4 mt-2">
                    <span class="text-[10px] text-gray-500 flex items-center gap-1"><span class="w-2 h-2 rounded-full bg-emerald-500"></span> Regular Bullish</span>
                    <span class="text-[10px] text-gray-500 flex items-center gap-1"><span class="w-2 h-2 rounded-full bg-red-500"></span> Regular Bearish</span>
                    <span class="text-[10px] text-gray-500 flex items-center gap-1"><span class="w-2 h-2 rounded-full bg-blue-500"></span> Hidden Bullish</span>
                    <span class="text-[10px] text-gray-500 flex items-center gap-1"><span class="w-2 h-2 rounded-full bg-purple-500"></span> Hidden Bearish</span>
                </div>
            </div>
        </template>

        <!-- Info Box -->
        <div class="bg-koin-900/15 border border-koin-700/25 rounded-xl p-4 mb-6">
            <div class="flex items-start gap-3">
                <svg class="w-5 h-5 text-koin-400 mt-0.5 flex-shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/></svg>
                <div>
                    <h4 class="text-sm font-medium text-koin-300">How to Read Divergences</h4>
                    <p class="text-xs text-gray-400 mt-1"><strong class="text-gray-300">Regular divergences</strong> signal potential trend reversals. <strong class="text-gray-300">Hidden divergences</strong> indicate trend continuation. Higher strength scores mean the divergence is more pronounced and reliable.</p>
                </div>
            </div>
        </div>

        <!-- Filters -->
        <div class="flex flex-col sm:flex-row gap-3 mb-6">
            <div class="flex gap-1 bg-gray-900 p-1 rounded-xl border border-gray-700">
                <template x-for="f in ['all','bullish','bearish','hidden']" :key="f">
                    <button @click="filterBias = f"
                            class="px-3 py-1.5 text-xs font-medium rounded-lg transition capitalize"
                            :class="filterBias === f ? 'bg-koin-600 text-white' : 'text-gray-400 hover:text-gray-300 hover:bg-gray-800'"
                            x-text="f === 'hidden' ? 'Hidden Only' : f === 'all' ? 'All' : f"></button>
                </template>
            </div>
            <div class="flex gap-1 bg-gray-900 p-1 rounded-xl border border-gray-700">
                <template x-for="ind in ['all','RSI','MACD','OBV','Volume']" :key="ind">
                    <button @click="filterIndicator = ind"
                            class="px-3 py-1.5 text-xs font-medium rounded-lg transition"
                            :class="filterIndicator === ind ? 'bg-koin-600 text-white' : 'text-gray-400 hover:text-gray-300 hover:bg-gray-800'"
                            x-text="ind === 'all' ? 'All Indicators' : ind"></button>
                </template>
            </div>
            <div class="relative flex-1">
                <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="search" placeholder="Search symbol..."
                       class="w-full pl-10 pr-4 py-2 bg-gray-800 border border-gray-700 rounded-lg text-sm text-gray-200 focus:outline-none focus:ring-1 focus:ring-koin-500">
            </div>
        </div>

        <!-- Cards Grid -->
        <div class="grid grid-cols-1 lg:grid-cols-2 gap-4">
            <template x-for="(item, idx) in filteredItems" :key="item.symbol || idx">
                <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">
                            <span class="text-white font-bold text-lg" x-text="item.symbol"></span>
                            <span class="text-xs text-gray-500" x-text="fmtPrice(item.current_price)"></span>
                        </div>
                        <div class="flex items-center gap-2">
                            <span class="px-2 py-0.5 text-xs font-medium rounded-full"
                                  :class="item.overall_bias === 'bullish' ? 'bg-emerald-900/50 text-emerald-300' : item.overall_bias === 'bearish' ? 'bg-red-900/50 text-red-300' : 'bg-gray-700 text-gray-300'"
                                  x-text="(item.overall_bias || 'neutral').toUpperCase()"></span>
                            <span class="text-sm font-bold" :class="item.divergence_score >= 70 ? 'text-koin-400' : item.divergence_score >= 40 ? 'text-amber-400' : 'text-gray-400'"
                                  x-text="fmt(item.divergence_score, 0)"></span>
                        </div>
                    </div>

                    <!-- Divergence Score Bar -->
                    <div class="mb-4">
                        <div class="flex items-center justify-between text-xs text-gray-500 mb-1">
                            <span>Divergence Score</span>
                            <span x-text="fmt(item.divergence_score, 0) + '/100'"></span>
                        </div>
                        <div class="w-full bg-gray-700 rounded-full h-2">
                            <div class="h-2 rounded-full transition-all"
                                 :class="item.divergence_score >= 70 ? 'bg-koin-500' : item.divergence_score >= 40 ? 'bg-amber-500' : 'bg-gray-500'"
                                 :style="'width:' + (item.divergence_score || 0) + '%'"></div>
                        </div>
                    </div>

                    <!-- Divergence List -->
                    <div class="space-y-2 mb-4" x-show="(item.divergences || []).length > 0">
                        <div class="text-xs text-gray-500 uppercase tracking-wider font-medium">Detected Divergences</div>
                        <template x-for="(div, di) in filteredDivergences(item)" :key="di">
                            <div class="bg-gray-900/60 border border-gray-700/50 rounded-lg p-3">
                                <div class="flex items-center justify-between mb-2">
                                    <div class="flex items-center gap-2">
                                        <span class="px-2 py-0.5 text-xs font-medium rounded-full"
                                              :class="divTypeBadge(div.type)" x-text="divTypeLabel(div.type)"></span>
                                        <span class="text-xs font-medium text-gray-300" x-text="div.indicator"></span>
                                    </div>
                                    <span class="text-xs text-gray-500" x-text="'Strength: ' + fmt(div.strength, 0)"></span>
                                </div>
                                <!-- Strength Bar -->
                                <div class="w-full bg-gray-700 rounded-full h-1.5 mb-2">
                                    <div class="h-1.5 rounded-full transition-all"
                                         :class="div.strength >= 70 ? 'bg-emerald-500' : div.strength >= 40 ? 'bg-amber-500' : 'bg-gray-500'"
                                         :style="'width:' + (div.strength || 0) + '%'"></div>
                                </div>
                                <p class="text-xs text-gray-400" x-text="div.description || '-'"></p>
                                <div class="flex flex-wrap gap-3 mt-2 text-[10px] text-gray-500">
                                    <span x-show="div.price_point" x-text="'Price: ' + fmtPrice(div.price_point)"></span>
                                    <span x-show="div.indicator_value != null" x-text="'Indicator: ' + fmt(div.indicator_value, 2)"></span>
                                </div>
                            </div>
                        </template>
                    </div>

                    <!-- No Divergences -->
                    <div x-show="(item.divergences || []).length === 0" class="text-center py-4">
                        <p class="text-xs text-gray-500">No divergences detected</p>
                    </div>

                    <!-- Current Indicator Values -->
                    <div class="border-t border-gray-700 pt-3 mt-3">
                        <div class="text-xs text-gray-500 uppercase tracking-wider font-medium mb-2">Current Indicators</div>
                        <div class="grid grid-cols-3 gap-2">
                            <div class="bg-gray-900/40 rounded-lg p-2 text-center">
                                <div class="text-[10px] text-gray-500">RSI</div>
                                <div class="text-sm font-medium mt-0.5"
                                     :class="(item.rsi || 0) > 70 ? 'text-red-400' : (item.rsi || 0) < 30 ? 'text-emerald-400' : 'text-gray-300'"
                                     x-text="fmt(item.rsi, 1)"></div>
                            </div>
                            <div class="bg-gray-900/40 rounded-lg p-2 text-center">
                                <div class="text-[10px] text-gray-500">MACD Hist</div>
                                <div class="text-sm font-medium mt-0.5"
                                     :class="(item.macd_histogram || 0) >= 0 ? 'text-emerald-400' : 'text-red-400'"
                                     x-text="fmt(item.macd_histogram, 4)"></div>
                            </div>
                            <div class="bg-gray-900/40 rounded-lg p-2 text-center">
                                <div class="text-[10px] text-gray-500">OBV Trend</div>
                                <div class="text-sm font-medium mt-0.5"
                                     :class="item.obv_trend === 'up' ? 'text-emerald-400' : item.obv_trend === 'down' ? 'text-red-400' : 'text-gray-300'"
                                     x-text="(item.obv_trend || '-').toUpperCase()"></div>
                            </div>
                        </div>
                    </div>
                </div>
            </template>
        </div>

        <!-- Empty State -->
        <div x-show="filteredItems.length === 0 && items.length > 0" x-cloak class="text-center py-16">
            <svg class="w-12 h-12 text-gray-600 mx-auto mb-3" fill="none" stroke="currentColor" stroke-width="1.5" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" d="M21 21l-5.197-5.197m0 0A7.5 7.5 0 105.196 5.196a7.5 7.5 0 0010.607 10.607z"/></svg>
            <p class="text-gray-500">No divergences matching your filters</p>
        </div>

        <!-- Empty State No Data -->
        <div x-show="items.length === 0 && !loading && !error" x-cloak class="text-center py-16">
            <svg class="w-12 h-12 text-gray-600 mx-auto mb-3" 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>
            <p class="text-gray-500">No data available. Click Refresh to scan.</p>
        </div>
    </div>
</div>

<script>
function divergenceScannerApp() {
    return {
        loading: false, error: null, lastRefresh: null,
        items: [], search: '',
        filterBias: 'all', filterIndicator: 'all',

        get bullishCount() {
            return this.items.filter(i => i.overall_bias === 'bullish').length;
        },
        get bearishCount() {
            return this.items.filter(i => i.overall_bias === 'bearish').length;
        },
        get avgStrength() {
            if (!this.items.length) return 0;
            return this.items.reduce((s, i) => s + (i.divergence_score || 0), 0) / this.items.length;
        },

        typeCount(type) {
            return this.items.reduce((c, i) => c + (i.divergences || []).filter(d => d.type === type).length, 0);
        },
        typePct(type) {
            const total = this.items.reduce((c, i) => c + (i.divergences || []).length, 0);
            if (total === 0) return 0;
            return (this.typeCount(type) / total * 100).toFixed(1);
        },

        get filteredItems() {
            let list = [...this.items];
            if (this.search) {
                const q = this.search.toUpperCase();
                list = list.filter(i => (i.symbol || '').toUpperCase().includes(q));
            }
            if (this.filterBias === 'bullish') list = list.filter(i => i.overall_bias === 'bullish');
            else if (this.filterBias === 'bearish') list = list.filter(i => i.overall_bias === 'bearish');
            else if (this.filterBias === 'hidden') list = list.filter(i => (i.divergences || []).some(d => (d.type || '').includes('hidden')));
            if (this.filterIndicator !== 'all') {
                list = list.filter(i => (i.divergences || []).some(d => d.indicator === this.filterIndicator));
            }
            list.sort((a, b) => (b.divergence_score || 0) - (a.divergence_score || 0));
            return list;
        },

        filteredDivergences(item) {
            let divs = item.divergences || [];
            if (this.filterIndicator !== 'all') divs = divs.filter(d => d.indicator === this.filterIndicator);
            if (this.filterBias === 'hidden') divs = divs.filter(d => (d.type || '').includes('hidden'));
            return divs;
        },

        divTypeBadge(type) {
            const map = {
                'regular_bullish': 'bg-emerald-900/50 text-emerald-300',
                'regular_bearish': 'bg-red-900/50 text-red-300',
                'hidden_bullish': 'bg-blue-900/50 text-blue-300',
                'hidden_bearish': 'bg-purple-900/50 text-purple-300',
            };
            return map[type] || 'bg-gray-700 text-gray-300';
        },
        divTypeLabel(type) {
            return (type || 'unknown').replace(/_/g, ' ').replace(/\b\w/g, l => l.toUpperCase());
        },

        init() { this.fetchData(); },
        async fetchData() {
            this.loading = true; this.error = null;
            try {
                const params = new URLSearchParams({ asset_type: '{{ asset_mode }}' });
                const res = await fetch(`/api/v1/market/divergence-scanner?${params}`);
                if (res.redirected) { window.location.href = '/auth/login'; return; }
                const json = await res.json();
                if (json.error) { this.error = json.error; }
                else { this.items = json.items || json.results || []; }
            } catch (e) { this.error = 'Failed to load: ' + 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 %}