@extends('admin.layout')

@section('title', 'AI / LLM Settings')
@section('page_title', 'AI / LLM Settings')

@section('extra_styles')
@include('admin.partials.settings-styles')
<style>
.llm-providers { display: flex; flex-direction: column; gap: 10px; margin-top: 8px; }
.llm-prov-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 14px;
}
.llm-prov-grid {
    display: grid;
    grid-template-columns: 80px 1.1fr 1.3fr 1.6fr 1.4fr 1.6fr auto auto;
    gap: 8px; align-items: center;
}
.llm-prov-grid .adm-input-full { height: 34px; font-size: 12px; padding: 0 10px; }
.llm-prov-grid select.adm-input-full { cursor: pointer; }
.llm-prov-grid select.adm-input-full option { background: #1e1e1e; }
.llm-prov-grid .llm-active {
    display: flex; align-items: center; gap: 6px;
    font-size: 12px; color: var(--text-2);
    cursor: pointer; user-select: none;
}
.llm-prov-grid .llm-active input[type="radio"] { accent-color: var(--brand); }
.llm-prov-grid .llm-active input[type="radio"]:checked + span { color: var(--brand); font-weight: 700; }
.llm-prov-grid .llm-remove,
.llm-prov-grid .llm-test {
    height: 34px; padding: 0 12px;
    display: inline-flex; align-items: center; justify-content: center;
    white-space: nowrap; gap: 6px; font-size: 12px;
}
.llm-prov-grid .llm-remove { width: 36px; padding: 0; }

.llm-prov-status {
    margin-top: 10px; font-size: 12px;
    display: none; align-items: center; gap: 8px; flex-wrap: wrap;
}
.llm-prov-status[data-state="info"]    { display: flex; color: var(--text-2); }
.llm-prov-status[data-state="success"] { display: flex; color: #4ade80; }
.llm-prov-status[data-state="error"]   { display: flex; color: #f87171; }

.llm-model-chips {
    display: none; flex-wrap: wrap; gap: 6px;
    margin-top: 10px; padding-top: 10px;
    border-top: 1px dashed var(--border);
    max-height: 180px; overflow-y: auto;
}
.llm-model-chips.show { display: flex; }
.llm-model-chip {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 5px 10px; font-size: 12px;
    color: var(--text); cursor: pointer;
    transition: border-color .15s, background .15s, color .15s;
}
.llm-model-chip:hover { border-color: var(--brand); }
.llm-model-chip.selected { background: var(--brand); border-color: var(--brand); color: #fff; }

@media (max-width: 1200px) {
    .llm-prov-grid { grid-template-columns: 80px 1fr 1fr 1fr 1fr 1fr auto auto; gap: 6px; }
    .llm-prov-grid .adm-input-full { font-size: 11px; }
}
@media (max-width: 768px) {
    .llm-prov-grid { grid-template-columns: 1fr 1fr; }
    .llm-prov-grid .llm-active { grid-column: 1 / -1; }
    .llm-prov-grid .llm-test,
    .llm-prov-grid .llm-remove { justify-self: end; }
}
</style>
@endsection

@section('content')
<div class="adm-page-header">
    <h1 class="adm-page-title"><i class="bi bi-stars"></i> AI / LLM Settings</h1>
</div>

@if(session('success'))
<div class="adm-alert adm-alert-success" style="margin-bottom:20px;">
    <i class="bi bi-check-circle-fill"></i>
    <span>{{ session('success') }}</span>
    <button class="adm-alert-close" type="button"><i class="bi bi-x"></i></button>
</div>
@endif

@if($errors->any())
<div class="adm-alert adm-alert-error" style="margin-bottom:20px;">
    <i class="bi bi-exclamation-triangle-fill"></i>
    <span>{{ $errors->first() }}</span>
    <button class="adm-alert-close" type="button"><i class="bi bi-x"></i></button>
</div>
@endif

<form method="POST" action="{{ route('admin.settings.update') }}" id="llmForm">
@csrf
<input type="hidden" name="llm_section" value="1">

{{-- ── AI / LLM toggles ──────────────────────────────────────── --}}
<div class="settings-section">
    <div class="settings-section-header">
        <i class="bi bi-stars"></i>
        Lyrics LLM Pipeline
        @if($settings['llm_enabled'] === 'true')
            <span class="chip chip-green" style="margin-left:6px;"><span class="chip-dot"></span> Enabled</span>
        @else
            <span class="chip chip-red"   style="margin-left:6px;"><span class="chip-dot"></span> Disabled</span>
        @endif
    </div>
    <div class="settings-section-body">

        <p style="margin:0 0 18px;font-size:13px;color:var(--text-2);line-height:1.5;">
            Configure one or more LLM providers (local Ollama or hosted APIs). Pick one
            as <strong>Active</strong> — that's the provider the lyrics pipeline uses
            to clean descriptions and (optionally) pick per-line emojis. With LLM off,
            the pipeline uses the built-in regex parser and keyword emoji map.
        </p>

        <div class="setting-row">
            <div class="setting-label">
                <strong>Enable LLM</strong>
                <small>Master switch. When off, the regex/keyword pipeline runs instead.</small>
            </div>
            <div class="setting-control">
                <label class="toggle-wrap">
                    <span class="toggle-switch">
                        <input type="checkbox" name="llm_enabled" value="true" {{ $settings['llm_enabled'] === 'true' ? 'checked' : '' }}>
                        <span class="toggle-track"></span>
                        <span class="toggle-thumb"></span>
                    </span>
                    <span class="toggle-label">Use the active LLM</span>
                </label>
            </div>
        </div>

        <div class="setting-row">
            <div class="setting-label">
                <strong>Clean description lyrics</strong>
                <small>Use the active LLM to drop titles, section headers, instrument tags, etc. from a song's description before aligning to audio.</small>
            </div>
            <div class="setting-control">
                <label class="toggle-wrap">
                    <span class="toggle-switch">
                        <input type="checkbox" name="llm_clean_lyrics" value="true" {{ $settings['llm_clean_lyrics'] === 'true' ? 'checked' : '' }}>
                        <span class="toggle-track"></span>
                        <span class="toggle-thumb"></span>
                    </span>
                    <span class="toggle-label">Clean before alignment</span>
                </label>
            </div>
        </div>

        <div class="setting-row">
            <div class="setting-label">
                <strong>Decorate lines with emojis</strong>
                <small>Replaces the built-in keyword emoji with a per-line contextual emoji chosen by the LLM. Results are cached.</small>
            </div>
            <div class="setting-control">
                <label class="toggle-wrap">
                    <span class="toggle-switch">
                        <input type="checkbox" name="llm_decorate_lyrics" value="true" {{ $settings['llm_decorate_lyrics'] === 'true' ? 'checked' : '' }}>
                        <span class="toggle-track"></span>
                        <span class="toggle-thumb"></span>
                    </span>
                    <span class="toggle-label">Per-line emojis</span>
                </label>
            </div>
        </div>

    </div>
</div>

{{-- ── Providers ─────────────────────────────────────────────── --}}
<div class="settings-section">
    <div class="settings-section-header">
        <i class="bi bi-plug"></i>
        Providers
    </div>
    <div class="settings-section-body">

        <p style="margin:0 0 14px;font-size:13px;color:var(--text-2);line-height:1.5;">
            Add as many as you like. <strong>Ollama</strong> runs locally with no API key
            (default <code>http://localhost:11434</code>). <strong>Anthropic</strong> /
            <strong>OpenAI</strong> need a key. Pick the radio next to the provider you
            want active.
        </p>

        <div id="llmProvidersList" class="llm-providers">
            @foreach($settings['llm_providers'] as $i => $p)
            @php
                $pid    = $p['id'] ?? \Illuminate\Support\Str::uuid()->toString();
                $kind   = $p['kind'] ?? 'ollama';
                $hasKey = isset($p['api_key']) && $p['api_key'] !== '';
            @endphp
            <div class="llm-prov-card" data-row>
                <div class="llm-prov-grid">
                    <input type="hidden" name="providers[{{ $i }}][id]" value="{{ $pid }}">
                    <label class="llm-active">
                        <input type="radio" name="llm_active_id" value="{{ $pid }}" {{ $settings['llm_active_id'] === $pid ? 'checked' : '' }}>
                        <span>Active</span>
                    </label>
                    <input type="text" class="adm-input-full" name="providers[{{ $i }}][name]" placeholder="Label" value="{{ $p['name'] ?? '' }}" required>
                    <select class="adm-input-full llm-kind" name="providers[{{ $i }}][kind]">
                        <option value="ollama"    {{ $kind === 'ollama'    ? 'selected' : '' }}>Ollama (local)</option>
                        <option value="anthropic" {{ $kind === 'anthropic' ? 'selected' : '' }}>Anthropic Claude</option>
                        <option value="openai"    {{ $kind === 'openai'    ? 'selected' : '' }}>OpenAI (or compatible)</option>
                    </select>
                    <input type="text" class="adm-input-full llm-endpoint" name="providers[{{ $i }}][endpoint]" placeholder="Endpoint" value="{{ $p['endpoint'] ?? '' }}">
                    <input type="text" class="adm-input-full llm-model" name="providers[{{ $i }}][model]" placeholder="Model name" value="{{ $p['model'] ?? '' }}" list="llm-models-{{ $pid }}">
                    <datalist id="llm-models-{{ $pid }}"></datalist>
                    <input type="password" class="adm-input-full llm-apikey" name="providers[{{ $i }}][api_key]" autocomplete="new-password"
                        placeholder="{{ $hasKey ? '••••••••' : 'API key (blank for Ollama)' }}">
                    <button type="button" class="adm-btn llm-test" onclick="llmTestProvider(this)" title="Test connection & load models">
                        <i class="bi bi-plug llm-test-icon"></i> <span>Test</span>
                    </button>
                    <button type="button" class="adm-btn adm-btn-danger llm-remove" onclick="this.closest('[data-row]').remove();" title="Remove">
                        <i class="bi bi-trash"></i>
                    </button>
                </div>
                <div class="llm-prov-status"></div>
                <div class="llm-model-chips"></div>
            </div>
            @endforeach
        </div>

        <button type="button" id="llmAddProvider" class="adm-btn" style="margin-top:14px;">
            <i class="bi bi-plus-lg"></i> Add provider
        </button>

        <template id="llmProviderTpl">
            <div class="llm-prov-card" data-row>
                <div class="llm-prov-grid">
                    <input type="hidden" name="providers[__I__][id]" value="">
                    <label class="llm-active">
                        <input type="radio" name="llm_active_id" value="">
                        <span>Active</span>
                    </label>
                    <input type="text" class="adm-input-full" name="providers[__I__][name]" placeholder="Label" required>
                    <select class="adm-input-full llm-kind" name="providers[__I__][kind]">
                        <option value="ollama">Ollama (local)</option>
                        <option value="anthropic">Anthropic Claude</option>
                        <option value="openai">OpenAI (or compatible)</option>
                    </select>
                    <input type="text" class="adm-input-full llm-endpoint" name="providers[__I__][endpoint]" placeholder="http://localhost:11434">
                    <input type="text" class="adm-input-full llm-model" name="providers[__I__][model]" placeholder="Test connection to load models">
                    <input type="password" class="adm-input-full llm-apikey" name="providers[__I__][api_key]" autocomplete="new-password" placeholder="API key (blank for Ollama)">
                    <button type="button" class="adm-btn llm-test" onclick="llmTestProvider(this)" title="Test connection & load models">
                        <i class="bi bi-plug llm-test-icon"></i> <span>Test</span>
                    </button>
                    <button type="button" class="adm-btn adm-btn-danger llm-remove" onclick="this.closest('[data-row]').remove();" title="Remove">
                        <i class="bi bi-trash"></i>
                    </button>
                </div>
                <div class="llm-prov-status"></div>
                <div class="llm-model-chips"></div>
            </div>
        </template>

    </div>
</div>

<div class="save-bar">
    <a href="{{ route('admin.dashboard') }}" class="adm-btn">Cancel</a>
    <button type="submit" class="adm-btn adm-btn-primary">
        <i class="bi bi-floppy"></i> Save AI Settings
    </button>
</div>

</form>
@endsection

@section('scripts')
<script>
(function () {
    var listEl = document.getElementById('llmProvidersList');
    var btn    = document.getElementById('llmAddProvider');
    var tpl    = document.getElementById('llmProviderTpl');
    if (!listEl || !btn || !tpl) return;

    function nextIdx() { return listEl.querySelectorAll('[data-row]').length; }
    function uuid() {
        return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
            var r = Math.random() * 16 | 0, v = c === 'x' ? r : (r & 0x3) | 0x8;
            return v.toString(16);
        });
    }
    function endpointDefault(kind) {
        return kind === 'anthropic' ? 'https://api.anthropic.com'
             : kind === 'openai'    ? 'https://api.openai.com'
             : 'http://localhost:11434';
    }

    btn.addEventListener('click', function () {
        var i = nextIdx();
        var html = tpl.innerHTML.replace(/__I__/g, i);
        var wrap = document.createElement('div');
        wrap.innerHTML = html.trim();
        var row = wrap.firstElementChild;
        var id = uuid();
        row.querySelector('input[name="providers['+i+'][id]"]').value = id;
        row.querySelector('input[name="llm_active_id"]').value = id;
        // Attach a datalist so the model field gets typeahead after a Test.
        var modelInput = row.querySelector('.llm-model');
        if (modelInput) {
            var dl = document.createElement('datalist');
            dl.id = 'llm-models-' + id;
            modelInput.setAttribute('list', dl.id);
            row.appendChild(dl);
        }
        row.querySelector('.llm-kind').addEventListener('change', function (e) {
            var ep = row.querySelector('input[name="providers['+i+'][endpoint]"]');
            if (ep && !ep.value) ep.value = endpointDefault(e.target.value);
        });
        listEl.appendChild(row);
    });
})();

// ── Test connection + load models ─────────────────────────────
async function llmTestProvider(btn) {
    const row       = btn.closest('[data-row]');
    if (! row) return;
    const idInput   = row.querySelector('input[name$="[id]"]');
    const kind      = row.querySelector('.llm-kind').value;
    const endpoint  = row.querySelector('.llm-endpoint').value.trim();
    const apiKey    = row.querySelector('.llm-apikey').value;
    const modelIn   = row.querySelector('.llm-model');
    const statusEl  = row.querySelector('.llm-prov-status');
    const chipsEl   = row.querySelector('.llm-model-chips');
    const icon      = btn.querySelector('.llm-test-icon');
    const label     = btn.querySelector('span');
    const dataList  = row.querySelector('datalist');

    btn.disabled = true;
    icon.className = 'bi bi-arrow-repeat spin llm-test-icon';
    label.textContent = 'Testing…';
    statusEl.dataset.state = 'info';
    statusEl.innerHTML = '<i class="bi bi-hourglass-split"></i> Probing endpoint…';
    chipsEl.classList.remove('show');
    chipsEl.innerHTML = '';

    try {
        const res = await fetch('{{ route("admin.settings.llm-test") }}', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json',
                'X-CSRF-TOKEN': '{{ csrf_token() }}',
                'X-Requested-With': 'XMLHttpRequest',
                'Accept': 'application/json',
            },
            body: JSON.stringify({
                id:       idInput ? idInput.value : '',
                kind:     kind,
                endpoint: endpoint,
                api_key:  apiKey,
            }),
        });
        const data = await res.json();

        if (! data.ok) {
            statusEl.dataset.state = 'error';
            statusEl.innerHTML = '<i class="bi bi-x-circle-fill"></i> <span>' +
                _llmEsc(data.message || 'Connection failed') + '</span>';
        } else {
            const n = data.count || 0;
            statusEl.dataset.state = 'success';
            statusEl.innerHTML = '<i class="bi bi-check-circle-fill"></i> <span>Connected — ' +
                n + ' model' + (n === 1 ? '' : 's') + ' available. Click one to select.</span>';

            // Refresh datalist
            if (dataList) {
                dataList.innerHTML = '';
                (data.models || []).forEach(m => {
                    const opt = document.createElement('option');
                    opt.value = m;
                    dataList.appendChild(opt);
                });
            }

            // Render clickable chips
            chipsEl.innerHTML = '';
            (data.models || []).forEach(m => {
                const chip = document.createElement('button');
                chip.type = 'button';
                chip.className = 'llm-model-chip' + (m === (modelIn.value || '').trim() ? ' selected' : '');
                chip.textContent = m;
                chip.addEventListener('click', () => {
                    modelIn.value = m;
                    chipsEl.querySelectorAll('.llm-model-chip').forEach(c => c.classList.remove('selected'));
                    chip.classList.add('selected');
                });
                chipsEl.appendChild(chip);
            });
            if ((data.models || []).length) chipsEl.classList.add('show');
        }
    } catch (e) {
        statusEl.dataset.state = 'error';
        statusEl.innerHTML = '<i class="bi bi-x-circle-fill"></i> <span>' + _llmEsc(e.message) + '</span>';
    }

    icon.className = 'bi bi-plug llm-test-icon';
    label.textContent = 'Test';
    btn.disabled = false;
}

function _llmEsc(s) {
    return String(s).replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;').replace(/"/g,'&quot;');
}
</script>
@endsection