{% extends "base.html" %}
{% block title %}自动签名系统 - 数据库管理{% endblock %}
{% block content %}
<div class="main-content">
    <div class="two-col">
        <div class="col-left" style="max-width:360px;flex-shrink:0;">
            <div class="card-section">
                <h6><i class="bi bi-search"></i> 搜索</h6>
                <div class="input-group input-group-sm">
                    <input class="form-control" type="text" id="searchKeyword" placeholder="人员ID或姓名">
                    <button class="btn btn-primary" id="btnSearch"><i class="bi bi-search"></i></button>
                </div>
            </div>

            <div class="card-section">
                <h6><i class="bi bi-plus-circle"></i> 新增记录</h6>
                <div class="mb-2">
                    <label class="form-label">人员ID</label>
                    <input class="form-control form-control-sm" type="text" id="addUserId" placeholder="仅字母和数字">
                </div>
                <div class="mb-2">
                    <label class="form-label">人员姓名</label>
                    <input class="form-control form-control-sm" type="text" id="addUserName" placeholder="中文或英文">
                </div>
                <div class="mb-2">
                    <label class="form-label">签章图片</label>
                    <input class="form-control form-control-sm" type="file" id="addSignImage" accept="image/png,image/jpeg">
                </div>
                <div class="mb-2">
                    <div class="form-check">
                        <input class="form-check-input" type="checkbox" id="addIsSignature">
                        <label class="form-check-label" for="addIsSignature" style="font-size:12px;">手写签字(预览时执行黑白二值化)</label>
                    </div>
                </div>
                <button class="btn btn-primary btn-sm w-100" id="btnAddRecord"><i class="bi bi-plus"></i> 新增</button>
            </div>

            <div class="card-section">
                <h6><i class="bi bi-upload"></i> 批量导入</h6>
                <div class="mb-2">
                    <input class="form-control form-control-sm" type="file" id="batchFiles" multiple accept="image/png,image/jpeg">
                    <small class="text-muted">文件名自动作为人员姓名</small>
                </div>
                <div class="mb-2">
                    <div class="form-check">
                        <input class="form-check-input" type="checkbox" id="batchAutoId">
                        <label class="form-check-label" for="batchAutoId" style="font-size:12px;">自动生成ID</label>
                    </div>
                </div>
                <div class="mb-2">
                    <input class="form-control form-control-sm" type="text" id="batchIdPrefix" placeholder="ID前缀(默认USER)" value="USER">
                </div>
                <div class="mb-2">
                    <div class="form-check">
                        <input class="form-check-input" type="checkbox" id="batchIsSignature">
                        <label class="form-check-label" for="batchIsSignature" style="font-size:12px;">手写签字</label>
                    </div>
                </div>
                <button class="btn btn-success btn-sm w-100" id="btnBatchImport"><i class="bi bi-upload"></i> 批量导入</button>
            </div>

            <div class="card-section" id="editSection" style="display:none;">
                <h6><i class="bi bi-pencil"></i> 编辑记录</h6>
                <div class="mb-2">
                    <label class="form-label">人员ID</label>
                    <input class="form-control form-control-sm" type="text" id="editUserId" readonly>
                </div>
                <div class="mb-2">
                    <label class="form-label">人员姓名</label>
                    <input class="form-control form-control-sm" type="text" id="editUserName">
                </div>
                <div class="mb-2">
                    <label class="form-label">签章图片(留空不修改)</label>
                    <input class="form-control form-control-sm" type="file" id="editSignImage" accept="image/png,image/jpeg">
                </div>
                <div class="mb-2">
                    <div class="form-check">
                        <input class="form-check-input" type="checkbox" id="editIsSignature">
                        <label class="form-check-label" for="editIsSignature" style="font-size:12px;">手写签字</label>
                    </div>
                </div>
                <div class="d-grid gap-2">
                    <button class="btn btn-primary btn-sm" id="btnUpdateRecord"><i class="bi bi-check"></i> 保存</button>
                    <button class="btn btn-outline-secondary btn-sm" id="btnCancelEdit"><i class="bi bi-x"></i> 取消</button>
                </div>
            </div>

            <div class="card-section" id="previewSection" style="display:none;">
                <h6><i class="bi bi-eye"></i> 图片预览</h6>
                <div class="preview-container">
                    <div>
                        <div class="preview-box"><img id="previewOriginal" src="" alt="原图"></div>
                        <div class="label">原图</div>
                    </div>
                    <div>
                        <div class="preview-box"><img id="previewProcessed" src="" alt="效果图"></div>
                        <div class="label" id="previewLabel">抠图效果</div>
                    </div>
                </div>
            </div>
        </div>

        <div class="col-right">
            <div class="card-section">
                <h6><i class="bi bi-table"></i> 签章数据</h6>
                <div id="dataTableArea"></div>
            </div>
        </div>
    </div>
</div>
{% endblock %}

{% block extra_js %}
<script>
let currentPage = 1;
const pageSize = 20;

function loadRecords(page) {
    currentPage = page || 1;
    const keyword = document.getElementById('searchKeyword').value;
    fetch(`/api/db/list?page=${currentPage}&page_size=${pageSize}&keyword=${encodeURIComponent(keyword)}`)
        .then(r => r.json())
        .then(data => {
            if (data.success) {
                renderTable(data.data);
            } else {
                alert('加载列表失败: ' + data.message);
            }
        })
        .catch(err => alert('请求失败: ' + err.message));
}

function renderTable(pageData) {
    const area = document.getElementById('dataTableArea');
    const totalPages = Math.ceil(pageData.total / pageData.page_size);
    let html = `
        <table class="table table-hover table-sm">
            <thead>
                <tr><th>人员ID</th><th>人员姓名</th><th>图片属性</th><th>创建时间</th><th>操作</th></tr>
            </thead>
            <tbody>
    `;
    pageData.data.forEach(row => {
        const sigLabel = row.is_signature ? '<span class="badge bg-info">手写签字</span>' : '<span class="badge bg-secondary">普通签章</span>';
        html += `
            <tr>
                <td>${escapeHtml(row.user_id)}</td>
                <td>${escapeHtml(row.user_name)}</td>
                <td>${sigLabel}</td>
                <td>${row.create_time || '-'}</td>
                <td>
                    <button class="btn btn-outline-primary btn-sm" onclick="previewRecord('${escapeHtml(row.user_id)}')"><i class="bi bi-eye"></i></button>
                    <button class="btn btn-outline-warning btn-sm" onclick="editRecord('${escapeHtml(row.user_id)}')"><i class="bi bi-pencil"></i></button>
                    <button class="btn btn-outline-danger btn-sm" onclick="deleteRecord('${escapeHtml(row.user_id)}')"><i class="bi bi-trash"></i></button>
                </td>
            </tr>
        `;
    });
    html += '</tbody></table>';

    html += `<div class="pagination-area">`;
    if (currentPage > 1) html += `<button class="btn btn-sm btn-outline-primary" onclick="loadRecords(${currentPage - 1})">上一页</button>`;
    html += `<span style="padding:4px 12px;font-size:13px;">第 ${currentPage}/${totalPages} 页 (共${pageData.total}条)</span>`;
    if (currentPage < totalPages) html += `<button class="btn btn-sm btn-outline-primary" onclick="loadRecords(${currentPage + 1})">下一页</button>`;
    html += `</div>`;

    area.innerHTML = html;
}

function previewRecord(userId) {
    document.getElementById('previewSection').style.display = '';
    document.getElementById('previewOriginal').src = `/api/db/image/${encodeURIComponent(userId)}?t=${Date.now()}`;
    document.getElementById('previewProcessed').src = `/api/db/preview/${encodeURIComponent(userId)}?t=${Date.now()}`;
}

function editRecord(userId) {
    fetch(`/api/db/get/${encodeURIComponent(userId)}`)
        .then(r => r.json())
        .then(data => {
            if (data.success) {
                const row = data.data;
                document.getElementById('editUserId').value = row.user_id;
                document.getElementById('editUserName').value = row.user_name;
                document.getElementById('editIsSignature').checked = row.is_signature;
                document.getElementById('editSection').style.display = '';
            }
        });
}

function deleteRecord(userId) {
    if (!confirm(`确定删除人员 ${userId} 的记录?`)) return;
    fetch(`/api/db/delete/${encodeURIComponent(userId)}`, { method: 'DELETE' })
        .then(r => r.json())
        .then(data => {
            if (data.success) {
                loadRecords(currentPage);
            } else {
                alert('删除失败: ' + data.message);
            }
        });
}

document.getElementById('btnSearch').addEventListener('click', () => loadRecords(1));
document.getElementById('searchKeyword').addEventListener('keypress', e => { if (e.key === 'Enter') loadRecords(1); });

document.getElementById('btnAddRecord').addEventListener('click', function() {
    const formData = new FormData();
    formData.append('user_id', document.getElementById('addUserId').value);
    formData.append('user_name', document.getElementById('addUserName').value);
    formData.append('sign_image', document.getElementById('addSignImage').files[0]);
    formData.append('is_signature', document.getElementById('addIsSignature').checked ? '1' : '0');

    fetch('/api/db/add', { method: 'POST', body: formData })
        .then(r => r.json())
        .then(data => {
            if (data.success) {
                document.getElementById('addUserId').value = '';
                document.getElementById('addUserName').value = '';
                document.getElementById('addSignImage').value = '';
                document.getElementById('addIsSignature').checked = false;
                loadRecords(1);
            } else {
                alert('新增失败: ' + data.message);
            }
        })
        .catch(err => alert('请求失败: ' + err.message));
});

document.getElementById('btnUpdateRecord').addEventListener('click', function() {
    const userId = document.getElementById('editUserId').value;
    const formData = new FormData();
    formData.append('user_name', document.getElementById('editUserName').value);
    formData.append('is_signature', document.getElementById('editIsSignature').checked ? '1' : '0');
    const imgFile = document.getElementById('editSignImage').files[0];
    if (imgFile) formData.append('sign_image', imgFile);

    fetch(`/api/db/update/${encodeURIComponent(userId)}`, { method: 'PUT', body: formData })
        .then(r => r.json())
        .then(data => {
            if (data.success) {
                document.getElementById('editSection').style.display = 'none';
                loadRecords(currentPage);
            } else {
                alert('更新失败: ' + data.message);
            }
        });
});

document.getElementById('btnCancelEdit').addEventListener('click', function() {
    document.getElementById('editSection').style.display = 'none';
});

document.getElementById('btnBatchImport').addEventListener('click', function() {
    const formData = new FormData();
    const files = document.getElementById('batchFiles').files;
    for (let f of files) formData.append('files', f);
    formData.append('auto_id', document.getElementById('batchAutoId').checked ? '1' : '0');
    formData.append('id_prefix', document.getElementById('batchIdPrefix').value || 'USER');
    formData.append('is_signature', document.getElementById('batchIsSignature').checked ? '1' : '0');

    fetch('/api/db/batch_import', { method: 'POST', body: formData })
        .then(r => r.json())
        .then(data => {
            if (data.success) {
                const d = data.data;
                alert(`批量导入完成: 成功${d.success}条, 失败${d.fail}条`);
                loadRecords(1);
            } else {
                alert('批量导入失败: ' + data.message);
            }
        });
});

loadRecords(1);
</script>
{% endblock %}