{% extends "base.html" %}
{% block title %}Supply & Demand Zones{% endblock %}

{% block content %}
<div x-data="supplyDemandApp()" 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="M2.25 21h19.5m-18-18v18m10.5-18v18m6-13.5V21M6.75 6.75h.75m-.75 3h.75m-.75 3h.75m3-6h.75m-.75 3h.75m-.75 3h.75M6.75 21v-3.375c0-.621.504-1.125 1.125-1.125h2.25c.621 0 1.125.504 1.125 1.125V21M3 3h12m-.75 4.5H21m-3.75 0h.008v.008h-.008v-.008zm0 3h.008v.008h-.008v-.008zm0 3h.008v.008h-.008v-.008z"/></svg>
                </div>
                Supply &amp; Demand Zones
            </h1>
            <p class="text-gray-400 text-sm mt-1">Identify institutional supply and demand zones with order block 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-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 supply &amp; demand zones...</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 Analyzed</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">Fresh Demand Zones</div>
                <div class="text-2xl font-bold text-emerald-400 mt-1" x-text="freshDemandCount"></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">Fresh Supply Zones</div>
                <div class="text-2xl font-bold text-red-400 mt-1" x-text="freshSupplyCount"></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 Score</div>
                <div class="text-2xl font-bold text-koin-400 mt-1" x-text="fmt(avgScore, 0)"></div>
            </div>
        </div>

        <!-- 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">Supply &amp; Demand vs Traditional S/R</h4>
                    <p class="text-xs text-gray-400 mt-1"><strong class="text-gray-300">Supply/Demand zones</strong> represent areas where institutional orders created significant price moves, unlike traditional support/resistance which are simple price levels. <strong class="text-gray-300">Fresh zones</strong> (untested) are strongest. <strong class="text-gray-300">Tested zones</strong> weaken with each revisit. <strong class="text-gray-300">Order blocks</strong> mark the origin candle of the move.</p>
                    <div class="flex flex-wrap gap-3 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> Fresh = untested</span>
                        <span class="text-[10px] text-gray-500 flex items-center gap-1"><span class="w-2 h-2 rounded-full bg-amber-500"></span> Tested = revisited</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> Broken = invalidated</span>
                    </div>
                </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 [{v:'all',l:'All'},{v:'bullish',l:'Bullish'},{v:'bearish',l:'Bearish'}]" :key="f.v">
                    <button @click="filterBias = f.v"
                            class="px-3 py-1.5 text-xs font-medium rounded-lg transition"
                            :class="filterBias === f.v ? 'bg-koin-600 text-white' : 'text-gray-400 hover:text-gray-300 hover:bg-gray-800'"
                            x-text="f.l"></button>
                </template>
            </div>
            <div class="flex gap-1 bg-gray-900 p-1 rounded-xl border border-gray-700">
                <template x-for="f in [{v:'all',l:'All Zones'},{v:'fresh',l:'Fresh'},{v:'tested',l:'Tested'}]" :key="f.v">
                    <button @click="filterFreshness = f.v"
                            class="px-3 py-1.5 text-xs font-medium rounded-lg transition"
                            :class="filterFreshness === f.v ? 'bg-koin-600 text-white' : 'text-gray-400 hover:text-gray-300 hover:bg-gray-800'"
                            x-text="f.l"></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.bias === 'bullish' ? 'bg-emerald-900/50 text-emerald-300' : item.bias === 'bearish' ? 'bg-red-900/50 text-red-300' : 'bg-gray-700 text-gray-300'"
                                  x-text="(item.bias || 'neutral').toUpperCase()"></span>
                            <span class="text-sm font-bold"
                                  :class="(item.score || 0) >= 70 ? 'text-koin-400' : (item.score || 0) >= 40 ? 'text-amber-400' : 'text-gray-400'"
                                  x-text="fmt(item.score, 0)"></span>
                        </div>
                    </div>

                    <!-- Overall Score Bar -->
                    <div class="mb-4">
                        <div class="flex items-center justify-between text-xs text-gray-500 mb-1">
                            <span>Overall Score</span>
                            <span x-text="fmt(item.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.score || 0) >= 70 ? 'bg-koin-500' : (item.score || 0) >= 40 ? 'bg-amber-500' : 'bg-gray-500'"
                                 :style="'width:' + (item.score || 0) + '%'"></div>
                        </div>
                    </div>

                    <!-- Nearest Demand Zone -->
                    <div class="bg-emerald-900/10 border border-emerald-800/20 rounded-lg p-3 mb-3" x-show="item.nearest_demand">
                        <div class="flex items-center justify-between mb-2">
                            <span class="text-xs font-medium text-emerald-300 uppercase tracking-wider">Nearest Demand Zone</span>
                            <span class="px-2 py-0.5 text-[10px] font-medium rounded-full"
                                  :class="freshnessBadge(item.nearest_demand?.freshness)"
                                  x-text="(item.nearest_demand?.freshness || 'unknown').toUpperCase()"></span>
                        </div>
                        <div class="flex items-center justify-between text-xs mb-1">
                            <span class="text-gray-400">Range</span>
                            <span class="text-emerald-300 font-medium" x-text="fmtPrice(item.nearest_demand?.low) + ' - ' + fmtPrice(item.nearest_demand?.high)"></span>
                        </div>
                        <div class="w-full bg-gray-700 rounded-full h-1.5">
                            <div class="h-1.5 rounded-full bg-emerald-500 transition-all"
                                 :style="'width:' + (item.nearest_demand?.strength || 0) + '%'"></div>
                        </div>
                        <div class="text-[10px] text-gray-500 mt-1 text-right" x-text="'Strength: ' + fmt(item.nearest_demand?.strength, 0) + '%'"></div>
                    </div>

                    <!-- Nearest Supply Zone -->
                    <div class="bg-red-900/10 border border-red-800/20 rounded-lg p-3 mb-3" x-show="item.nearest_supply">
                        <div class="flex items-center justify-between mb-2">
                            <span class="text-xs font-medium text-red-300 uppercase tracking-wider">Nearest Supply Zone</span>
                            <span class="px-2 py-0.5 text-[10px] font-medium rounded-full"
                                  :class="freshnessBadge(item.nearest_supply?.freshness)"
                                  x-text="(item.nearest_supply?.freshness || 'unknown').toUpperCase()"></span>
                        </div>
                        <div class="flex items-center justify-between text-xs mb-1">
                            <span class="text-gray-400">Range</span>
                            <span class="text-red-300 font-medium" x-text="fmtPrice(item.nearest_supply?.low) + ' - ' + fmtPrice(item.nearest_supply?.high)"></span>
                        </div>
                        <div class="w-full bg-gray-700 rounded-full h-1.5">
                            <div class="h-1.5 rounded-full bg-red-500 transition-all"
                                 :style="'width:' + (item.nearest_supply?.strength || 0) + '%'"></div>
                        </div>
                        <div class="text-[10px] text-gray-500 mt-1 text-right" x-text="'Strength: ' + fmt(item.nearest_supply?.strength, 0) + '%'"></div>
                    </div>

                    <!-- All Zones List -->
                    <div x-show="(item.zones || []).length > 0" class="mb-3">
                        <div class="text-[10px] text-gray-500 uppercase tracking-wider font-medium mb-2">All Zones</div>
                        <div class="space-y-1.5">
                            <template x-for="(zone, zi) in (item.zones || []).slice(0, 6)" :key="zi">
                                <div class="flex items-center justify-between bg-gray-900/40 rounded-lg px-3 py-2">
                                    <div class="flex items-center gap-2">
                                        <span class="px-1.5 py-0.5 text-[10px] font-medium rounded"
                                              :class="zone.type === 'demand' ? 'bg-emerald-900/50 text-emerald-300' : 'bg-red-900/50 text-red-300'"
                                              x-text="zone.type === 'demand' ? 'DEM' : 'SUP'"></span>
                                        <span class="text-xs text-gray-300" x-text="fmtPrice(zone.low) + ' - ' + fmtPrice(zone.high)"></span>
                                    </div>
                                    <div class="flex items-center gap-2">
                                        <div class="w-16 bg-gray-700 rounded-full h-1">
                                            <div class="h-1 rounded-full transition-all"
                                                 :class="zone.type === 'demand' ? 'bg-emerald-500' : 'bg-red-500'"
                                                 :style="'width:' + (zone.strength || 0) + '%'"></div>
                                        </div>
                                        <span class="px-1.5 py-0.5 text-[10px] font-medium rounded-full"
                                              :class="freshnessBadge(zone.freshness)"
                                              x-text="(zone.freshness || '-').charAt(0).toUpperCase()"></span>
                                    </div>
                                </div>
                            </template>
                        </div>
                    </div>

                    <!-- Order Blocks -->
                    <div x-show="(item.order_blocks || []).length > 0" class="mb-3">
                        <div class="text-[10px] text-gray-500 uppercase tracking-wider font-medium mb-2">Order Blocks</div>
                        <div class="flex flex-wrap gap-1.5">
                            <template x-for="(ob, oi) in item.order_blocks || []" :key="oi">
                                <span class="px-2 py-0.5 text-[10px] font-medium rounded-full"
                                      :class="ob.type === 'bullish' ? 'bg-emerald-900/40 text-emerald-300' : 'bg-red-900/40 text-red-300'"
                                      x-text="(ob.type === 'bullish' ? 'Bull OB' : 'Bear OB') + ' @ ' + fmtPrice(ob.price)"></span>
                            </template>
                        </div>
                    </div>

                    <!-- Key Insight -->
                    <div x-show="item.key_insight" class="border-t border-gray-700 pt-3">
                        <p class="text-xs text-gray-400 leading-relaxed" x-text="item.key_insight"></p>
                    </div>
                </div>
            </template>
        </div>

        <!-- Empty States -->
        <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 zones matching your filters</p>
        </div>
        <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="M2.25 21h19.5m-18-18v18m10.5-18v18m6-13.5V21M6.75 6.75h.75m-.75 3h.75m-.75 3h.75m3-6h.75m-.75 3h.75m-.75 3h.75"/></svg>
            <p class="text-gray-500">No data available. Click Refresh to scan.</p>
        </div>
    </div>
</div>

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

        get freshDemandCount() {
            return this.items.filter(i => i.nearest_demand && (i.nearest_demand.freshness === 'fresh')).length;
        },
        get freshSupplyCount() {
            return this.items.filter(i => i.nearest_supply && (i.nearest_supply.freshness === 'fresh')).length;
        },
        get avgScore() {
            if (!this.items.length) return 0;
            return this.items.reduce((s, i) => s + (i.score || 0), 0) / this.items.length;
        },

        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.bias === 'bullish');
            else if (this.filterBias === 'bearish') list = list.filter(i => i.bias === 'bearish');
            if (this.filterFreshness === 'fresh') {
                list = list.filter(i => (i.zones || []).some(z => z.freshness === 'fresh'));
            } else if (this.filterFreshness === 'tested') {
                list = list.filter(i => (i.zones || []).some(z => z.freshness === 'tested'));
            }
            list.sort((a, b) => (b.score || 0) - (a.score || 0));
            return list;
        },

        freshnessBadge(freshness) {
            const f = (freshness || '').toLowerCase();
            if (f === 'fresh') return 'bg-emerald-900/50 text-emerald-300';
            if (f === 'tested') return 'bg-amber-900/50 text-amber-300';
            if (f === 'broken') return 'bg-red-900/50 text-red-300';
            return 'bg-gray-700 text-gray-300';
        },

        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/supply-demand?${params}`);
                if (res.redirected) { window.location.href = res.url; 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 %}