let currentPage = 1;
let claimModal, completeModal, detailModal;

$(document).ready(function() {
    // 初始化模态框
    claimModal = new bootstrap.Modal(document.getElementById('claimModal'));
    completeModal = new bootstrap.Modal(document.getElementById('completeModal'));
    detailModal = new bootstrap.Modal(document.getElementById('detailModal'));
    
    // 加载任务列表
    loadTasks();
});

// 加载任务列表
function loadTasks(page = 1) {
    const status = $('#filter-status').val();
    const scope = $('#filter-scope').val();
    
    let params = {
        page: page,
        per_page: 20
    };
    
    if (status) {
        params.status = status;
    }
    
    if (scope === 'my') {
        const user = JSON.parse(localStorage.getItem('current_user'));
        params.user_id = user.id;
    }
    
    $.ajax({
        url: '/api/groups/1/tasks',
        method: 'GET',
        data: params,
        success: function(response) {
            renderTasks(response.tasks);
            renderPagination(response.page, response.pages);
            currentPage = page;
        },
        error: handleAjaxError
    });
}

// 渲染任务列表
function renderTasks(tasks) {
    const tbody = $('#task-list');
    tbody.empty();
    
    if (tasks.length === 0) {
        tbody.append('<tr><td colspan="9" class="text-center">暂无数据</td></tr>');
        return;
    }
    
    const currentUser = JSON.parse(localStorage.getItem('current_user'));
    
    tasks.forEach(function(task) {
        const priorityClass = getPriorityClass(task.priority);
        
        let actions = '';
        
        // 待认领状态 - 所有人可认领
        if (task.status === 'pending') {
            actions = `<button class="btn btn-sm btn-primary" onclick="openClaimModal(${task.id})">
                        <i class="bi bi-hand-thumbs-up"></i> 认领
                       </button>`;
        }
        
        // 已认领状态 - 认领人可完成或取消
        if (task.status === 'claimed' && task.claimed_by_id === currentUser.id) {
            actions = `
                <button class="btn btn-sm btn-success" onclick="openCompleteModal(${task.id})">
                    <i class="bi bi-check-circle"></i> 完成
                </button>
                <button class="btn btn-sm btn-warning" onclick="cancelClaim(${task.id})">
                    <i class="bi bi-x-circle"></i> 取消
                </button>
            `;
        }
        
        // 查看详情按钮
        actions += ` <button class="btn btn-sm btn-info" onclick="viewDetail(${task.id})">
                        <i class="bi bi-eye"></i> 详情
                     </button>`;
        
        // 管理员可删除
        if (currentUser.role === 'admin') {
            actions += ` <button class="btn btn-sm btn-danger" onclick="deleteTask(${task.id})">
                            <i class="bi bi-trash"></i> 删除
                         </button>`;
        }
        
        const row = `
            <tr>
                <td>${task.id}</td>
                <td>
                    ${task.series_link ? 
                        `<a href="${task.series_link}" target="_blank">${task.series_name}</a>` : 
                        task.series_name
                    }
                </td>
                <td>${formatDate(task.series_date)}</td>
                <td><span class="${priorityClass}">${task.priority || '-'}</span></td>
                <td>${getStatusBadge(task.status)}</td>
                <td>${task.claimed_by || '-'}</td>
                <td>${task.torrent_id || '-'}</td>
                <td>${formatDateTime(task.created_at)}</td>
                <td>${actions}</td>
            </tr>
        `;
        
        tbody.append(row);
    });
}

// 渲染分页
function renderPagination(current, total) {
    const pagination = $('#pagination');
    pagination.empty();
    
    if (total <= 1) return;
    
    // 上一页
    pagination.append(`
        <li class="page-item ${current === 1 ? 'disabled' : ''}">
            <a class="page-link" href="#" onclick="loadTasks(${current - 1}); return false;">上一页</a>
        </li>
    `);
    
    // 页码
    for (let i = 1; i <= total; i++) {
        if (i === 1 || i === total || (i >= current - 2 && i <= current + 2)) {
            pagination.append(`
                <li class="page-item ${i === current ? 'active' : ''}">
                    <a class="page-link" href="#" onclick="loadTasks(${i}); return false;">${i}</a>
                </li>
            `);
        } else if (i === current - 3 || i === current + 3) {
            pagination.append('<li class="page-item disabled"><span class="page-link">...</span></li>');
        }
    }
    
    // 下一页
    pagination.append(`
        <li class="page-item ${current === total ? 'disabled' : ''}">
            <a class="page-link" href="#" onclick="loadTasks(${current + 1}); return false;">下一页</a>
        </li>
    `);
}

// 打开认领模态框
function openClaimModal(taskId) {
    $('#claim-task-id').val(taskId);
    $('#claim-note').val('');
    claimModal.show();
}

// 提交认领
function submitClaim() {
    const taskId = $('#claim-task-id').val();
    const note = $('#claim-note').val();
    
    $.ajax({
        url: `/api/tasks/${taskId}/claim`,
        method: 'POST',
        headers: {
            'Content-Type': 'application/json'
        },
        data: JSON.stringify({
            claim_note: note
        }),
        success: function() {
            claimModal.hide();
            showSuccess('认领成功！');
            loadTasks(currentPage);
        },
        error: handleAjaxError
    });
}

// 打开完成模态框
function openCompleteModal(taskId) {
    $('#complete-task-id').val(taskId);
    $('#torrent-id').val('');
    $('#complete-note').val('');
    completeModal.show();
}

// 提交完成
function submitComplete() {
    const taskId = $('#complete-task-id').val();
    const torrentId = $('#torrent-id').val();
    const note = $('#complete-note').val();
    
    if (!torrentId) {
        alert('请填写种子ID');
        return;
    }
    
    $.ajax({
        url: `/api/tasks/${taskId}/complete`,
        method: 'POST',
        headers: {
            'Content-Type': 'application/json'
        },
        data: JSON.stringify({
            torrent_id: torrentId,
            complete_note: note
        }),
        success: function() {
            completeModal.hide();
            showSuccess('任务完成！');
            loadTasks(currentPage);
        },
        error: handleAjaxError
    });
}

// 取消认领
function cancelClaim(taskId) {
    if (!confirm('确定要取消认领吗？')) {
        return;
    }
    
    $.ajax({
        url: `/api/tasks/${taskId}/cancel-claim`,
        method: 'POST',
        success: function() {
            showSuccess('已取消认领');
            loadTasks(currentPage);
        },
        error: handleAjaxError
    });
}

// 查看详情
function viewDetail(taskId) {
    $.ajax({
        url: `/api/tasks/${taskId}`,
        method: 'GET',
        success: function(task) {
            const html = `
                <dl class="row">
                    <dt class="col-sm-3">任务ID</dt>
                    <dd class="col-sm-9">${task.id}</dd>
                    
                    <dt class="col-sm-3">剧集名称</dt>
                    <dd class="col-sm-9">${task.series_name}</dd>
                    
                    <dt class="col-sm-3">剧集链接</dt>
                    <dd class="col-sm-9">
                        ${task.series_link ? 
                            `<a href="${task.series_link}" target="_blank">${task.series_link}</a>` : 
                            '-'
                        }
                    </dd>
                    
                    <dt class="col-sm-3">更新日期</dt>
                    <dd class="col-sm-9">${formatDate(task.series_date)}</dd>
                    
                    <dt class="col-sm-3">优先级</dt>
                    <dd class="col-sm-9"><span class="${getPriorityClass(task.priority)}">${task.priority || '-'}</span></dd>
                    
                    <dt class="col-sm-3">状态</dt>
                    <dd class="col-sm-9">${getStatusBadge(task.status)}</dd>
                    
                    <dt class="col-sm-3">创建人</dt>
                    <dd class="col-sm-9">${task.creator}</dd>
                    
                    <dt class="col-sm-3">创建时间</dt>
                    <dd class="col-sm-9">${formatDateTime(task.created_at)}</dd>
                    
                    ${task.claimed_by ? `
                        <dt class="col-sm-3">认领人</dt>
                        <dd class="col-sm-9">${task.claimed_by}</dd>
                        
                        <dt class="col-sm-3">认领时间</dt>
                        <dd class="col-sm-9">${formatDateTime(task.claimed_at)}</dd>
                        
                        <dt class="col-sm-3">认领备注</dt>
                        <dd class="col-sm-9">${task.claim_note || '-'}</dd>
                    ` : ''}
                    
                    ${task.torrent_id ? `
                        <dt class="col-sm-3">种子ID</dt>
                        <dd class="col-sm-9">${task.torrent_id}</dd>
                        
                        <dt class="col-sm-3">完成时间</dt>
                        <dd class="col-sm-9">${formatDateTime(task.completed_at)}</dd>
                        
                        <dt class="col-sm-3">完成备注</dt>
                        <dd class="col-sm-9">${task.complete_note || '-'}</dd>
                    ` : ''}
                </dl>
            `;
            
            $('#task-detail').html(html);
            detailModal.show();
        },
        error: handleAjaxError
    });
}

// 删除任务
function deleteTask(taskId) {
    if (!confirm('确定要删除这个任务吗？此操作不可恢复！')) {
        return;
    }
    
    $.ajax({
        url: `/api/tasks/${taskId}`,
        method: 'DELETE',
        success: function() {
            showSuccess('任务已删除');
            loadTasks(currentPage);
        },
        error: handleAjaxError
    });
}

// 重置筛选器
function resetFilters() {
    $('#filter-status').val('');
    $('#filter-scope').val('all');
    loadTasks(1);
}