{% extends "_shell.html" %}
{% block title %}數據庫連接 — alterdb{% endblock %}
{% block style %}
<style>
    .toolbar {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 1rem;
        margin-bottom: 1rem;
    }
    .toolbar h2 { margin: 0; }
    .toolbar a, .db-table .actions a, .db-table .actions button {
        font: inherit;
        padding: .35rem .9rem;
        border: 1px solid color-mix(in srgb, currentColor 30%, transparent);
        border-radius: 6px;
        background: transparent;
        color: inherit;
        cursor: pointer;
        text-decoration: none;
    }
    .toolbar a:hover, .db-table .actions a:hover, .db-table .actions button:hover {
        background: color-mix(in srgb, currentColor 10%, transparent);
    }
    .db-table .actions { white-space: nowrap; }
    .db-table .actions a, .db-table .actions button {
        padding: .2rem .6rem;
        font-size: .85rem;
        margin-left: .3rem;
    }
    .db-table .actions .danger { color: light-dark(#b3261e, #ffb4ab); }
    .db-table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 2rem;
        font-size: .95rem;
    }
    .db-table th, .db-table td {
        padding: .5rem .6rem;
        border-bottom: 1px solid color-mix(in srgb, currentColor 15%, transparent);
        text-align: left;
        vertical-align: top;
    }
    .db-table th { font-weight: 600; }
    .db-table td.type { text-transform: uppercase; font-size: .8rem; letter-spacing: .04em; }
    .db-table td.empty { text-align: center; opacity: .7; padding: 1.5rem 0; }
    .error {
        margin: 0 0 1rem;
        padding: .5rem .75rem;
        border-radius: 6px;
        color: light-dark(#b3261e, #ffb4ab);
        background: color-mix(in srgb, currentColor 8%, transparent);
    }
</style>
{% endblock %}
{% block page %}
<div class="toolbar">
    <h2>數據庫連接</h2>
    <a href="/databases/new">新增連接</a>
</div>
<p id="list-error" class="error" role="alert" hidden></p>
<table class="db-table">
    <thead>
        <tr>
            <th>名稱</th><th>類型</th><th>主機:埠</th><th>資料庫</th><th>用戶</th><th>更新時間</th><th>操作</th>
        </tr>
    </thead>
    <tbody id="db-rows"></tbody>
</table>
{% endblock %}
{% block script %}
<script>
(() => {
    'use strict';

    const listError = document.getElementById('list-error');
    const tbody = document.getElementById('db-rows');

    async function api(path, options) {
        const response = await fetch(path, options);
        if (!response.ok) {
            let message = '請求失敗（HTTP ' + response.status + '）';
            try {
                const body = await response.json();
                if (body.error) { message = body.error; }
            } catch (_) { /* 非 JSON 錯誤體，保留默認訊息 */ }
            throw new Error(message);
        }
        return response.status === 204 ? null : response.json();
    }

    function formatTime(iso) {
        return iso.replace('T', ' ').replace(/\.\d+Z$/, ' UTC');
    }

    function renderRows(databases) {
        const rows = [];
        if (databases.length === 0) {
            const tr = document.createElement('tr');
            const td = document.createElement('td');
            td.colSpan = 7;
            td.className = 'empty';
            td.textContent = '尚無連接，點擊「新增連接」建立第一個。';
            tr.append(td);
            rows.push(tr);
        } else {
            for (const item of databases) { rows.push(renderRow(item)); }
        }
        tbody.replaceChildren(...rows);
    }

    // 所有動態值一律經 textContent 寫入，避免以字串拼接 HTML 引入注入風險
    function renderRow(item) {
        const tr = document.createElement('tr');

        // 名稱連到詳情頁（連接狀態與數據表瀏覽）
        const nameCell = document.createElement('td');
        const nameLink = document.createElement('a');
        nameLink.href = '/databases/' + item.id;
        nameLink.textContent = item.name;
        nameCell.append(nameLink);
        tr.append(nameCell);

        const cells = [
            { text: item.type, className: 'type' },
            { text: item.host + ':' + item.port },
            { text: item.database_name },
            { text: item.username },
            { text: formatTime(item.updated_at) },
        ];
        for (const cell of cells) {
            const td = document.createElement('td');
            td.textContent = cell.text;
            if (cell.className) { td.className = cell.className; }
            tr.append(td);
        }

        const actions = document.createElement('td');
        actions.className = 'actions';
        const editLink = document.createElement('a');
        editLink.href = '/databases/' + item.id + '/edit';
        editLink.textContent = '編輯';
        const deleteButton = document.createElement('button');
        deleteButton.type = 'button';
        deleteButton.textContent = '刪除';
        deleteButton.className = 'danger';
        deleteButton.addEventListener('click', () => removeDatabase(item));
        actions.append(editLink, deleteButton);
        tr.append(actions);
        return tr;
    }

    async function loadList() {
        listError.hidden = true;
        try {
            renderRows(await api('/api/databases'));
        } catch (err) {
            listError.textContent = err.message;
            listError.hidden = false;
        }
    }

    async function removeDatabase(item) {
        if (!window.confirm('確定刪除連接「' + item.name + '」？')) { return; }
        try {
            await api('/api/databases/' + item.id, { method: 'DELETE' });
            await loadList();
        } catch (err) {
            listError.textContent = err.message;
            listError.hidden = false;
        }
    }

    loadList();
})();
</script>
{% endblock %}