const SHARE_TO = (() => {

    const ShareType = {
        CREATE: 'create',
        UPDATE: 'update',
        CANCEL: 'cancel',
    };

    // 当前分享的项目ID
    let curProjectID;

    // 当前项目的已分享列表
    let curSharedUsers = [];

    // 清除缓存
    function clearCache() {
        curProjectID = null;
        curSharedUsers = [];
    }

    // 最近联系人显示数量
    const rencentCount = 5;

    // 获取初始数据：1.最近分享人 2.联系人 3.已分享人
    async function getInitalData(projectID) {
        return await ajaxPost('/pm/api/getInitialShareData', { user_id: userID, count: rencentCount, projectID }, false);

    }

    // 获取头像视图html
    function getAvatarHTML(mobile, realName) {
        // 手机最后一位
        const lastMobileNumer = mobile.substr(-1);
        // 显示名称为真实名称后两位
        const nickName = realName.substr(-2);
        return `<span class="avatar bg-${lastMobileNumer}">${nickName}</span>`;
    }

    /**
     * 获取用户列表视图html：最近分享和联系人用
     * @param {Array} users - 排序过的用户数据
     * @param {Boolean} showAlphabet - 是否显示字母表分类
     * @return {HTMLString}
     *   */
    function getUserHTML(users, showAlphabet) {
        let curLetter = '';
        return users.reduce((html, user) => {
            const mobile = user.mobile || '';
            const realName = user.real_name || '';
            const company = user.company || '';
            if (showAlphabet) {
                // 名字首个字符对应拼音
                const letter = pinyinUtil.getFirstLetter(realName).substr(0, 1);
                if (letter !== curLetter) {
                    curLetter = letter;
                    html += `<li class="letter">${letter}</li>`;
                }
            }
            const avatarHtml = getAvatarHTML(mobile, realName);
            return html +
                `<li>
                    ${avatarHtml}
                    <div class="book-body">
                        <h5 class="mt-0" title="${company}">${realName}</h5>
                        <span>${mobile}</span>
                    </div>
                </li>`;

        }, '');
    }

    // 初始化最近分享视图
    function initRecentView(recentUsers) {
        const recentShareHTML = getUserHTML(recentUsers, false);
        $('#recent-share').html(recentShareHTML);
        // 点击最近分享列表自动添加该用户添加到搜索框中
        $('#recent-share li').click(function () {
            const mobile = $(this).find('div span')[0].textContent;
            $('#share-phone').val(mobile);
            handleSearch()
        })
    }
    // 初始化联系人视图
    function initContactsView(contacts) {
        // 联系人按拼英首字母降序排序
        contacts.sort((a, b) => {
            const realNameA = a.real_name || '';
            const realNameB = b.real_name || '';
            return realNameA.localeCompare(realNameB, 'zh-Hans-CN', { sensitivity: 'accent' })
        });
        const contactsHTML = getUserHTML(contacts, true);
        $('#contacts').html(contactsHTML);
        // 点击联系人自动添加该联系人添加到搜索框中
        $('#contacts li:not(.letter)').click(function () {
            const mobile = $(this).find('div span')[0].textContent;
            $('#share-phone').val(mobile);
            $('#contacts-menue').removeClass('show');
            handleSearch()
        });
    }

    // 初始化已分享视图
    function initSharedView(sharedUsers) {
        const html = sharedUsers.reduce((html, user, index) => {
            const mobile = user.mobile || '';
            const realName = user.real_name || '';
            const company = user.company || '';
            const avatarHTML = getAvatarHTML(mobile, realName);
            const copyLabelFor = `allowCopy${index}`;
            const editLabelFor = `allowEdit${index}`;
            return html +
                `<li class="card mb-1">
                    <div class="card-body p-1 row m-0">
                        ${avatarHTML}
                        <div class="book-body col-auto pl-0">
                            <h5 class="mt-0">${realName}</h5>
                            ${mobile}
                        </div>
                        <div class="col-5">${company}</div>
                        <div class="col ml-auto p-0">
                            <div class="d-flex justify-content-end">
                                <div>
                                    <div class="custom-control custom-checkbox">
                                        <input type="checkbox" class="custom-control-input allow-copy" id="${copyLabelFor}" data-user="${user._id}" ${user.allowCopy ? 'checked' : ''}>
                                        <label class="custom-control-label" for="${copyLabelFor}">允许拷贝</label>
                                    </div>
                                    <div class="custom-control custom-checkbox">
                                        <input type="checkbox" class="custom-control-input allow-edit" id="${editLabelFor}" data-user="${user._id}" ${user.allowCooperate ? 'checked' : ''}>
                                        <label class="custom-control-label" for="${editLabelFor}">允许编辑</label>
                                    </div>
                                </div>
                                <div class="ml-3 d-flex align-items-center">
                                    <button class="btn btn-sm btn-outline-danger cancel-share" data-user="${user._id}">取消分享</button>
                                </div>
                            </div>
                        </div>
                    </div>
                </li>`;
        }, '');
        $('#shared-list').html(html);
        // 编辑允许拷贝
        $('#shared-list .allow-copy').click(function () {
            handleCheckBoxClick.call(this);
            handleShareAction.call(this, ShareType.UPDATE);
        });
        // 编辑允许编辑
        $('#shared-list .allow-edit').click(function () {
            handleCheckBoxClick.call(this);
            handleShareAction.call(this, ShareType.UPDATE);
        });
        // 取消分享
        $('#shared-list .cancel-share').click(function () {
            handleShareAction.call(this, ShareType.CANCEL);
        });
    }

    // 初始化搜索结果视图
    function initSearchResultView(user) {
        if (!user) {
            $('#share-search-result').html('')
        } else {
            const mobile = user.mobile || '';
            const realName = user.real_name || '';
            const company = user.company || '';
            const avatarHTML = getAvatarHTML(mobile, realName);
            const html =
                `<li class="card mb-1">
                        <div class="card-body p-1 row m-0">
                            ${avatarHTML}
                            <div class="book-body col-auto pl-0">
                                <h5 class="mt-0">${realName}</h5>
                                ${mobile}
                            </div>
                            <div class="col-5">${company}</div>
                            <div class="col ml-auto p-0">
                                    <div class="d-flex justify-content-end">
                                        <div>
                                            <div class="custom-control custom-checkbox">
                                                <input type="checkbox" class="custom-control-input" id="allow-copy" checked="">
                                                <label class="custom-control-label" for="allow-copy">允许拷贝</label>
                                            </div>
                                            <div class="custom-control custom-checkbox">
                                                <input type="checkbox" class="custom-control-input" id="allow-edit">
                                                <label class="custom-control-label" for="allow-edit">允许编辑</label>
                                            </div>
                                        </div>
                                        <div class="ml-3 d-flex align-items-center"><button class="btn btn-sm btn-primary" id="share-to" data-user="${user._id}">分享给Ta</button></div>
                                    </div>
                                </div>
                        </div>
                    </li>`;
            $('#share-search-result').html(html);

            // 允许拷贝
            $('#allow-copy').click(function () {
                handleCheckBoxClick.call(this);
            });
            // 允许编辑
            $('#allow-edit').click(function () {
                handleCheckBoxClick.call(this);
            });
            // 分享给事件
            $('#share-to').click(function () {
                handleShareAction.call(this, ShareType.CREATE, user);
            });
        }
    }

    // 复选框框的状态随点击更改，不处理的话input的checked并不会自动处理
    function handleCheckBoxClick() {
        const curChecked = !$(this).attr('checked');
        if (curChecked) {
            $(this).attr('checked', 'checked');
        } else {
            $(this).removeAttr('checked');
        }
    }

    // 添加分享、编辑分享、取消分享的动作
    async function handleShareAction(shareType, user) {
        try {
            $.bootstrapLoading.start();
            const receiver = $(this).data('user');
            let shareData;
            let type = ShareType.UPDATE;
            if (shareType === ShareType.CREATE) {
                const allowCopy = !!$('#allow-copy').attr('checked');
                const allowCooperate = !!$('#allow-edit').attr('checked');
                shareData = [{ userID: receiver, allowCopy, allowCooperate }];
                type = ShareType.CREATE; // 上传的服务器的type，删除跟更新是一样的
            } else if (shareType === ShareType.UPDATE) {
                const allowCopy = !!$(`[data-user=${receiver}].allow-copy`).attr('checked');
                const allowCooperate = !!$(`[data-user=${receiver}].allow-edit`).attr('checked');
                shareData = [{ userID: receiver, allowCopy, allowCooperate }];
            } else {
                shareData = [{ userID: receiver, isCancel: true }];
            }
            const postData = {
                user_id: userID,
                type,
                projectID: curProjectID,
                count: rencentCount,
                shareData
            };
            const rst = await ajaxPost('/pm/api/share', postData);
            // 请求成功后刷新视图
            if (shareType === ShareType.CREATE || shareType === ShareType.CANCEL) {
                if (shareType === ShareType.CREATE) {
                    user.allowCopy = shareData[0].allowCopy;
                    user.allowCooperate = shareData[0].allowCooperate;
                    curSharedUsers.unshift(user);
                    $('#share-phone').val('');
                    initSearchResultView();
                } else {
                    curSharedUsers = curSharedUsers.filter(user => user._id !== receiver);
                }
                if (Array.isArray(rst.recentUsers)) {
                    initRecentView(rst.recentUsers);
                }
                if (Array.isArray(rst.contacts)) {
                    initContactsView(rst.contacts)
                }
                initSharedView(curSharedUsers);
                refreshShareTip(curSharedUsers);
                refreshTreeView();
            }
        } catch (err) {
            console.log(err);
            alert(`${String(err)} 请重试。`);
            initSharedView(curSharedUsers);
        } finally {
            $.bootstrapLoading.end();
        }
    }

    // 刷新项目管理树视图
    // 如果是在项目管理页面，需要刷新树（分享图标可能需要清除）
    function refreshTreeView() {
        if (typeof projTreeObj !== 'undefined' && projTreeObj.tree.selected) {
            projTreeObj.tree.selected.data.shareInfo = curSharedUsers;
            const sheet = projTreeObj.workBook.getSheet(0);
            projTreeObj.renderSheetFuc(sheet, function () {
                sheet.invalidateLayout();
                sheet.repaint();
            });
        }
    }

    // 刷新造价书的分享按钮tooltip提示
    function refreshShareTip(sharedUsers) {
        const $shareTip = $('#share-tip');
        if (!$shareTip) {
            return;
        }
        const limit = 2;
        const count = sharedUsers.length;
        const users = sharedUsers.slice(0, 2);
        const tip = users.reduce((acc, user, index) => {
            if (index === 0) {
                acc += '已分享给';
                acc += user.real_name;
            } else {
                acc += ` ${user.real_name}`;
            }
            if (index === users.length - 1 && count > limit) {
                acc += `等${count}人`;
            }
            return acc;
        }, '');
        $shareTip.attr('data-original-title', tip);
    }

    // 初始化分享给的页面
    async function initModal(projectID) {
        try {
            curProjectID = projectID;
            $.bootstrapLoading.start();
            // 恢复
            $('#share-phone').val('');
            initSearchResultView();
            $('#share-hint').text('');
            const { isFree, sharedUsers, recentUsers, contacts } = await getInitalData(projectID);
            if (isFree) {
                hintBox.versionBox('此功能仅在专业版中提供，免费公用版可选择单个分段进行分享。');
            } else {
                curSharedUsers = sharedUsers;
                initSharedView(sharedUsers);
                initRecentView(recentUsers);
                initContactsView(contacts);
                setTimeout(() => $('#share-phone').focus(), 200);
                $('#share').modal('show');
            }
        } catch (err) {
            console.log(err);
            alert(err);
        } finally {
            $.bootstrapLoading.end();
        }
    }

    // 退出分享给页面
    function exitModal() {
        clearCache();
    }

    // 分享给
    async function handleSearch() {
        let phone = $('#share-phone').val();
        phone = phone && phone.trim() || '';
        //$('#share-hint').text('');
        initSearchResultView();
        if (!phone) {
            $('#share-hint').text('请输入手机号码。');
            return;
        }
        // 根据手机号获取用户
        const user = await ajaxPost('/user/getUserByMobile', { mobile: phone });
        if (!user) {
            $('#share-hint').text('账号不存在。');
            return;
        }
        if (user._id === userID) {
            $('#share-hint').text('不可分享给自己。');
            return;
        }
        const matched = curSharedUsers.find(item => item._id === user._id);
        if (matched) {
            $('#share-hint').text('已与该用户分享。');
            return;
        }
        $('#share-hint').text('');
        initSearchResultView(user);
    }

    // 一些事件的监听
    function handleEventListener() {
        // 界面消失
        $('#share').on('hide.bs.modal', function () {
            exitModal();
        });

        // 联系人下拉
        $('#contacts-dropdown').click(function () {
            const $subMenu = $('#contacts-menue');
            const visible = $subMenu.is(':visible');
            if (visible) {
                $subMenu.removeClass('show');
            } else {
                $subMenu.addClass('show');
            }
        });

        // 点击body时，联系人菜单的处理
        $('body').click(function (e) {
            const body = $(this)[0];
            const $contactsMenu = $('#contacts-menue');
            const contactsMenu = $contactsMenu[0];
            const dropdownButton = $('#contacts-dropdown')[0]
            if (!$contactsMenu.is(':visible')) {
                return;
            }
            let target = e.target;
            while (target !== body) {
                if ([contactsMenu, dropdownButton].includes(target)) {
                    return;
                }
                target = target.parentElement;
            }
            $(contactsMenu.parentElement).removeClass('show');
            $contactsMenu.removeClass('show');
        });

        // 输入手机号查找要分享给的用户
        let keyupTime = 0;
        let delayTime = 500;
        function delayKeyup(callback) {
            const nowTime = Date.now();
            keyupTime = nowTime;
            setTimeout(function () {
                if (nowTime - keyupTime == 0) {
                    callback();
                }
            }, delayTime);
        }
        $('#share-phone').on('keyup', function () {
            delayKeyup(function () {
                handleSearch();
            });
        });
        $('#sharePhone').on('keypress', function (e) {
            if (e.keyCode === 13) {
                $(this).blur();
            }
        });
    }

    return {
        initModal,
        handleEventListener,
        getAvatarHTML,
    }
})();