const API_HISTORY = "http://app.wisdompulse.cn/api/v1/doc/fetch-os-upload-history";
const API_DELETE = "http://app.wisdompulse.cn/api/v1/doc/batch-delete-os-upload"; // 假设后端支持 recordId 数组删除

const tableBody = document.getElementById("historyTableBody");
const pagination = document.getElementById("pagination");
const pageSizeSelect = document.getElementById("pageSizeSelect");
const deleteBtn = document.getElementById("deleteSelectedBtn");
const selectAllCheckbox = document.getElementById("selectAll");

let currentPage = 1;
let total = 0;
let pageSize = parseInt(pageSizeSelect.value);

function loadUploadHistory(page = 1, size = 10) {
    const url = `${API_HISTORY}?page=${page}&size=${size}`;
    fetch(url)
        .then(res => res.json())
        .then(data => {
            renderTable(data.records || []);
            renderPagination(data.total || 0, page, size);
        })
        .catch(err => {
            console.error("加载上传记录失败:", err);
        });
}

function renderTable(records) {
    tableBody.innerHTML = "";
    if (!records.length) {
        const tr = document.createElement("tr");
        tr.innerHTML = `<td colspan="4">暂无记录</td>`;
        tableBody.appendChild(tr);
        return;
    }


    records.forEach((rec) => {
        const statusText = rec.searchableStatus === 1 ? "可检索" : "不可检索";
        const tr = document.createElement("tr");
        tr.innerHTML = `
          <td><input type="checkbox" class="recordCheckbox" data-id="${rec.recordId}" /></td>
          <td><a href="${rec.url}" target="_blank">${rec.fileName}</a></td>
          <td>${rec.uploadTime}</td>
          <td>${rec.daysRemaining}</td>
          <td>${statusText}</td>
        `;
        tableBody.appendChild(tr);
    });

    // 全选功能
    selectAllCheckbox.checked = false;
    selectAllCheckbox.onclick = () => {
        const checkboxes = document.querySelectorAll(".recordCheckbox");
        checkboxes.forEach(cb => cb.checked = selectAllCheckbox.checked);
    };
}

function renderPagination(totalCount, current, size) {
    pagination.innerHTML = "";
    total = totalCount;
    const totalPages = Math.ceil(totalCount / size);
    if (totalPages <= 1) return;

    for (let i = 1; i <= totalPages; i++) {
        const btn = document.createElement("button");
        btn.textContent = i;
        if (i === current) btn.classList.add("active");
        btn.onclick = () => {
            currentPage = i;
            loadUploadHistory(currentPage, pageSize);
        };
        pagination.appendChild(btn);
    }
}

deleteBtn.onclick = () => {
    const selected = Array.from(document.querySelectorAll(".recordCheckbox:checked"));
    if (!selected.length) {
        alert("请选择要删除的记录");
        return;
    }

    const recordIds = selected.map(cb => parseInt(cb.getAttribute("data-id")));

    if (!confirm("删除后文件将无法访问或检索，是否确认删除？")) return;

    fetch(API_DELETE, {
        method: "POST",
        headers: {
            "Content-Type": "application/json"
        },
        body: JSON.stringify({ recordIds })
    })
        .then(res => {
            if (!res.ok) throw new Error("删除失败");
            return res.json();
        })
        .then(() => {
            alert("删除成功");
            loadUploadHistory(currentPage, pageSize);
        })
        .catch(err => {
            console.error("删除出错:", err);
            alert("删除失败，请稍后重试");
        });
};

pageSizeSelect.addEventListener("change", () => {
    pageSize = parseInt(pageSizeSelect.value);
    currentPage = 1;
    loadUploadHistory(currentPage, pageSize);
});

window.addEventListener("DOMContentLoaded", () => {
    loadUploadHistory(currentPage, pageSize);
});