{% extends "base.html" %}

{% block title %}API设置 - 有音个性化教学系统{% endblock %}

{% block content %}
<div class="card">
    <div class="card-header d-flex justify-content-between align-items-center">
        <h5 class="mb-0"><i class="bi bi-key"></i> AI API 配置</h5>
        <button class="btn btn-sm btn-outline-primary" onclick="showAddProviderModal()">
            <i class="bi bi-plus-lg"></i> 新增提供商
        </button>
    </div>
    <div class="card-body">
        <div class="alert alert-info">
            <i class="bi bi-info-circle"></i> 配置AI生成练习报告所需的API参数。
        </div>

        <form id="apiConfigForm">
            <div class="row">
                <div class="col-md-8 mb-3">
                    <label class="form-label">提供商</label>
                    <div class="input-group">
                        <select class="form-select" id="apiProvider" onchange="onProviderChange()"></select>
                        <button class="btn btn-outline-danger" type="button" onclick="deleteCurrentProvider()" title="删除当前提供商">
                            <i class="bi bi-trash"></i>
                        </button>
                    </div>
                </div>
                <div class="col-md-4 mb-3">
                    <label class="form-label">模型</label>
                    <div id="modelInputArea">
                        <select class="form-select" id="apiModelSelect" onchange="onModelSelectChange()" style="display:none"></select>
                        <input type="text" class="form-control" id="apiModelText" placeholder="如 gpt-4o-mini">
                    </div>
                </div>
            </div>

            <div class="mb-3">
                <label class="form-label">API Key</label>
                <div class="input-group">
                    <input type="password" class="form-control" id="apiKey" placeholder="请输入API Key">
                    <button class="btn btn-outline-secondary" type="button" onclick="toggleApiKey()">
                        <i class="bi bi-eye" id="apiKeyToggleIcon"></i>
                    </button>
                </div>
                <small class="text-muted" id="apiKeyPreview"></small>
            </div>

            <div class="mb-3">
                <label class="form-label">API Endpoint</label>
                <input type="text" class="form-control" id="apiEndpoint" placeholder="https://ark.cn-beijing.volces.com/api/coding/v3">
            </div>

            <div class="mb-3">
                <label class="form-label">Temperature</label>
                <input type="number" class="form-control" id="apiTemperature" min="0" max="2" step="0.1" value="0.7">
                <small class="text-muted">控制输出的随机性，值越大越有创造性</small>
            </div>

            <div class="mb-3">
                <label class="form-label">PDF水印文本</label>
                <input type="text" class="form-control" id="watermarkText" placeholder="留空则不显示水印">
                <small class="text-muted">PDF每页中央显示的斜向水印文字</small>
            </div>

            <div class="d-flex gap-2">
                <button type="button" class="btn btn-primary" onclick="saveApiConfig()">
                    <i class="bi bi-save"></i> 保存配置
                </button>
                <button type="button" class="btn btn-outline-secondary" onclick="testApiConnection()">
                    <i class="bi bi-plug"></i> 测试连接
                </button>
            </div>

            <div class="mt-3" id="apiTestResult"></div>
        </form>
    </div>
</div>

<!-- 新增提供商 Modal -->
<div class="modal fade" id="addProviderModal" tabindex="-1">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title" id="providerModalTitle">新增API提供商</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body">
                <div class="mb-3">
                    <label class="form-label">提供商ID <small class="text-muted">(英文标识)</small></label>
                    <input type="text" class="form-control" id="newProviderId" placeholder="如 opencodego">
                </div>
                <div class="mb-3">
                    <label class="form-label">显示名称</label>
                    <input type="text" class="form-control" id="newProviderName" placeholder="如 OpenCode Go">
                </div>
                <div class="mb-3">
                    <label class="form-label">API Endpoint</label>
                    <input type="text" class="form-control" id="newProviderEndpoint" placeholder="https://api.example.com/v1">
                </div>
                <div class="mb-3">
                    <label class="form-label">模型列表</label>
                    <div id="newModelsContainer">
                        <div class="input-group mb-1">
                            <input type="text" class="form-control newModelInput" placeholder="模型名称，如 gpt-4o">
                            <button class="btn btn-outline-danger" type="button" onclick="removeModelInput(this)" title="删除">&times;</button>
                        </div>
                    </div>
                    <button type="button" class="btn btn-sm btn-outline-secondary mt-1" onclick="addModelInput()">
                        <i class="bi bi-plus"></i> 添加模型
                    </button>
                    <small class="text-muted d-block">一个提供商可以有多个模型</small>
                </div>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">取消</button>
                <button type="button" class="btn btn-primary" id="providerModalSaveBtn" onclick="saveProvider()">确认添加</button>
            </div>
        </div>
    </div>
</div>

<div class="card mt-3">
    <div class="card-header">
        <h6 class="mb-0"><i class="bi bi-lightbulb"></i> 已注册提供商</h6>
    </div>
    <div class="card-body">
        <table class="table table-sm" id="providersTable">
            <thead>
                <tr><th>ID</th><th>名称</th><th>Endpoint</th><th>模型</th><th></th></tr>
            </thead>
            <tbody></tbody>
        </table>
    </div>
</div>
{% endblock %}

{% block extra_js %}
<script>
window.pageInit = function(data) {
    if (data.role !== 'admin') { window.location.href = '/'; return; }
    loadApiConfig();
};

let allProviders = {};
let currentModel = '';

async function loadProviders() {
    const r = await fetch('/api/config/providers');
    allProviders = await r.json();
    renderProviderDropdown();
    renderProvidersTable();
}

function renderProviderDropdown() {
    const sel = document.getElementById('apiProvider');
    const cur = sel.value;
    sel.innerHTML = '';
    for (const [id, p] of Object.entries(allProviders)) {
        sel.innerHTML += `<option value="${id}">${p.name}</option>`;
    }
    if (cur && allProviders[cur]) sel.value = cur;
}

function renderProvidersTable() {
    const tbody = document.getElementById('providersTable').querySelector('tbody');
    tbody.innerHTML = '';
    for (const [id, p] of Object.entries(allProviders)) {
        const ml = (p.models || []).join(', ');
        tbody.innerHTML += `<tr>
            <td><code>${id}</code></td><td>${p.name}</td>
            <td><code style="font-size:11px">${p.endpoint}</code></td>
            <td>${ml || '<span class="text-muted">&mdash;</span>'}</td>
            <td><button class="btn btn-sm btn-outline-secondary" onclick="editProvider('${id}')" title="编辑"><i class="bi bi-pencil"></i></button></td>
        </tr>`;
    }
    if (!Object.keys(allProviders).length) {
        tbody.innerHTML = '<tr><td colspan="5" class="text-muted text-center">暂无提供商</td></tr>';
    }
}

function renderModelInput(models) {
    const sel = document.getElementById('apiModelSelect');
    const txt = document.getElementById('apiModelText');
    if (models && models.length > 1) {
        sel.style.display = ''; txt.style.display = 'none';
        sel.innerHTML = '';
        models.forEach(m => { const o = document.createElement('option'); o.value = m; o.textContent = m; sel.appendChild(o); });
        if (models.includes(currentModel)) sel.value = currentModel; else sel.value = models[0];
    } else {
        sel.style.display = 'none'; txt.style.display = '';
        txt.value = (models && models.length === 1) ? models[0] : (currentModel || '');
    }
}

function getSelectedModel() {
    const sel = document.getElementById('apiModelSelect');
    return sel.style.display !== 'none' ? sel.value : document.getElementById('apiModelText').value;
}

function onModelSelectChange() {
    currentModel = document.getElementById('apiModelSelect').value;
}

function onProviderChange() {
    const id = document.getElementById('apiProvider').value;
    const p = allProviders[id];
    if (p) {
        document.getElementById('apiEndpoint').value = p.endpoint || '';
        renderModelInput(p.models || []);
    }
}

async function loadApiConfig() {
    await loadProviders();
    try {
        const r = await fetch('/api/config');
        const c = await r.json();
        document.getElementById('apiProvider').value = c.provider || '';
        document.getElementById('apiEndpoint').value = c.base_url || '';
        document.getElementById('apiTemperature').value = c.temperature || 0.7;
        document.getElementById('watermarkText').value = c.watermark_text || '';
        currentModel = c.model || '';
        const p = allProviders[c.provider];
        renderModelInput(p ? p.models : []);
        if (c.api_key_preview) document.getElementById('apiKeyPreview').textContent = '当前: ' + c.api_key_preview;
    } catch (e) { console.error(e); }
}

async function saveApiConfig() {
    const m = getSelectedModel();
    if (!m) { alert('请选择或输入模型'); return; }
    const config = {
        provider: document.getElementById('apiProvider').value,
        model: m,
        api_key: document.getElementById('apiKey').value,
        base_url: document.getElementById('apiEndpoint').value,
        temperature: parseFloat(document.getElementById('apiTemperature').value),
        watermark_text: document.getElementById('watermarkText').value.trim()
    };
    const r = await fetch('/api/config', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(config) });
    const d = await r.json();
    if (d.error) alert(d.error); else { alert('保存成功'); loadApiConfig(); }
}

async function testApiConnection() {
    const div = document.getElementById('apiTestResult');
    div.innerHTML = '<div class="alert alert-info">测试中...</div>';
    const r = await fetch('/api/config/test', { method: 'POST' });
    const d = await r.json();
    div.innerHTML = d.success ? '<div class="alert alert-success"><i class="bi bi-check-circle"></i> 连接成功</div>'
        : '<div class="alert alert-danger"><i class="bi bi-x-circle"></i> 连接失败: ' + (d.error || '未知错误') + '</div>';
}

// --- 新增/编辑提供商 ---
let editingProviderId = null;

function showAddProviderModal() {
    editingProviderId = null;
    document.getElementById('providerModalTitle').textContent = '新增API提供商';
    document.getElementById('providerModalSaveBtn').textContent = '确认添加';
    document.getElementById('newProviderId').value = '';
    document.getElementById('newProviderId').disabled = false;
    document.getElementById('newProviderName').value = '';
    document.getElementById('newProviderEndpoint').value = '';
    document.getElementById('newModelsContainer').innerHTML = `<div class="input-group mb-1">
        <input type="text" class="form-control newModelInput" placeholder="模型名称">
        <button class="btn btn-outline-danger" type="button" onclick="removeModelInput(this)" title="删除">&times;</button>
    </div>`;
    new bootstrap.Modal(document.getElementById('addProviderModal')).show();
}

function editProvider(id) {
    editingProviderId = id;
    const p = allProviders[id];
    document.getElementById('providerModalTitle').textContent = '编辑提供商 - ' + p.name;
    document.getElementById('providerModalSaveBtn').textContent = '保存修改';
    document.getElementById('newProviderId').value = id;
    document.getElementById('newProviderId').disabled = true;
    document.getElementById('newProviderName').value = p.name || '';
    document.getElementById('newProviderEndpoint').value = p.endpoint || '';
    const container = document.getElementById('newModelsContainer');
    const models = p.models || [];
    if (!models.length) models.push('');
    container.innerHTML = models.map(m => `<div class="input-group mb-1">
        <input type="text" class="form-control newModelInput" value="${m}" placeholder="模型名称">
        <button class="btn btn-outline-danger" type="button" onclick="removeModelInput(this)" title="删除">&times;</button>
    </div>`).join('');
    new bootstrap.Modal(document.getElementById('addProviderModal')).show();
}

async function saveProvider() {
    const id = document.getElementById('newProviderId').value.trim().toLowerCase();
    const name = document.getElementById('newProviderName').value.trim();
    const endpoint = document.getElementById('newProviderEndpoint').value.trim();
    const models = []; document.querySelectorAll('.newModelInput').forEach(inp => { const v = inp.value.trim(); if (v) models.push(v); });

    if (!name || !endpoint) { alert('请填写名称和Endpoint'); return; }
    if (!models.length) { alert('请至少添加一个模型'); return; }

    const isEdit = !!editingProviderId;
    const url = isEdit ? '/api/config/providers/' + editingProviderId : '/api/config/providers';
    const method = isEdit ? 'PUT' : 'POST';
    const body = isEdit ? { name, endpoint, models } : { id, name, endpoint, models };

    const r = await fetch(url, { method, headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(body) });
    const d = await r.json();
    if (d.error) { alert(d.error); return; }
    bootstrap.Modal.getInstance(document.getElementById('addProviderModal')).hide();
    await loadProviders();
    document.getElementById('apiProvider').value = editingProviderId || id;
    onProviderChange();
    alert(isEdit ? '修改成功' : '添加成功');
}

// --- 删除提供商 ---

async function deleteCurrentProvider() {
    const id = document.getElementById('apiProvider').value;
    if (Object.keys(allProviders).length <= 1) { alert('至少保留一个提供商'); return; }
    if (!confirm('确定要删除提供商 "' + (allProviders[id]?.name || id) + '" 吗？')) return;
    const r = await fetch('/api/config/providers/' + id, { method: 'DELETE' });
    const d = await r.json();
    if (d.error) { alert(d.error); return; }
    alert('删除成功');
    loadApiConfig();
}

function toggleApiKey() {
    const inp = document.getElementById('apiKey');
    const ico = document.getElementById('apiKeyToggleIcon');
    if (inp.type === 'password') { inp.type = 'text'; ico.className = 'bi bi-eye-slash'; }
    else { inp.type = 'password'; ico.className = 'bi bi-eye'; }
}
</script>
{% endblock %}