import React, {useEffect, useState} from 'react';
import {API, isAdmin, showError, showSuccess} from '../helpers';
import {Button, Modal, Popconfirm, Popover, Table, Tag, Form, Tooltip, Space} from "@douyinfe/semi-ui";
import {ITEMS_PER_PAGE} from '../constants';
import {renderGroup, renderNumber, renderQuota, renderText, stringToColor} from '../helpers/render';
import AddUser from "../pages/User/AddUser";
import EditUser from "../pages/User/EditUser";

function renderRole(role) {
    switch (role) {
        case 1:
            return <Tag size='large'>普通用户</Tag>;
        case 10:
            return <Tag color='yellow' size='large'>管理员</Tag>;
        case 100:
            return <Tag color='orange' size='large'>超级管理员</Tag>;
        default:
            return <Tag color='red' size='large'>未知身份</Tag>;
    }
}

const UsersTable = () => {
    const columns = [{
        title: 'ID', dataIndex: 'id',
    }, {
        title: '用户名', dataIndex: 'username',
    }, {
        title: '分组', dataIndex: 'group', render: (text, record, index) => {
            return (<div>
                {renderGroup(text)}
            </div>);
        },
    }, {
        title: '统计信息', dataIndex: 'info', render: (text, record, index) => {
            return (<div>
                <Space spacing={1}>
                    <Tooltip content={'剩余额度'}>
                        <Tag color='white' size='large'>{renderQuota(record.quota)}</Tag>
                    </Tooltip>
                    <Tooltip content={'已用额度'}>
                        <Tag color='white' size='large'>{renderQuota(record.used_quota)}</Tag>
                    </Tooltip>
                    <Tooltip content={'调用次数'}>
                        <Tag color='white' size='large'>{renderNumber(record.request_count)}</Tag>
                    </Tooltip>
                </Space>
            </div>);
        }
    }, {
        title: '邀请信息', dataIndex: 'invite', render: (text, record, index) => {
            return (<div>
                <Space spacing={1}>
                    <Tooltip content={'邀请人数'}>
                        <Tag color='white' size='large'>{renderNumber(record.aff_count)}</Tag>
                    </Tooltip>
                    <Tooltip content={'邀请总收益'}>
                        <Tag color='white' size='large'>{renderQuota(record.aff_history_quota)}</Tag>
                    </Tooltip>
                    <Tooltip content={'邀请人ID'}>
                        {record.inviter_id === 0 ? <Tag color='white' size='large'>无</Tag> :
                            <Tag color='white' size='large'>{record.inviter_id}</Tag>}
                    </Tooltip>
                </Space>
            </div>);
        }
    }, {
        title: '角色', dataIndex: 'role', render: (text, record, index) => {
            return (<div>
                {renderRole(text)}
            </div>);
        },
    }, {
        title: '状态', dataIndex: 'status', render: (text, record, index) => {
            return (<div>
                {record.DeletedAt !== null? <Tag color='red'>已注销</Tag> : renderStatus(text)}
            </div>);
        },
    }, {
        title: '', dataIndex: 'operate', render: (text, record, index) => (<div>
            {
                record.DeletedAt !== null ? <></>:
                    <>
                        <Popconfirm
                            title="确定？"
                            okType={'warning'}
                            onConfirm={() => {
                                manageUser(record.username, 'promote', record)
                            }}
                        >
                            <Button theme='light' type='warning' style={{marginRight: 1}}>提升</Button>
                        </Popconfirm>
                        <Popconfirm
                            title="确定？"
                            okType={'warning'}
                            onConfirm={() => {
                                manageUser(record.username, 'demote', record)
                            }}
                        >
                            <Button theme='light' type='secondary' style={{marginRight: 1}}>降级</Button>
                        </Popconfirm>
                        {record.status === 1 ?
                            <Button theme='light' type='warning' style={{marginRight: 1}} onClick={async () => {
                                manageUser(record.username, 'disable', record)
                            }}>禁用</Button> :
                            <Button theme='light' type='secondary' style={{marginRight: 1}} onClick={async () => {
                                manageUser(record.username, 'enable', record);
                            }} disabled={record.status === 3}>启用</Button>}
                        <Button theme='light' type='tertiary' style={{marginRight: 1}} onClick={() => {
                            setEditingUser(record);
                            setShowEditUser(true);
                        }}>编辑</Button>
                    </>

            }
            <Popconfirm
                title="确定是否要删除此用户？"
                content="硬删除，此修改将不可逆"
                okType={'danger'}
                position={'left'}
                onConfirm={() => {
                    manageUser(record.username, 'delete', record).then(() => {
                        removeRecord(record.id);
                    })
                }}
            >
                <Button theme='light' type='danger' style={{marginRight: 1}}>删除</Button>
            </Popconfirm>
        </div>),
    },];

    const [users, setUsers] = useState([]);
    const [loading, setLoading] = useState(true);
    const [activePage, setActivePage] = useState(1);
    const [searchKeyword, setSearchKeyword] = useState('');
    const [searching, setSearching] = useState(false);
    const [userCount, setUserCount] = useState(ITEMS_PER_PAGE);
    const [showAddUser, setShowAddUser] = useState(false);
    const [showEditUser, setShowEditUser] = useState(false);
    const [editingUser, setEditingUser] = useState({
        id: undefined,
    });

    const setCount = (data) => {
        if (data.length >= (activePage) * ITEMS_PER_PAGE) {
            setUserCount(data.length + 1);
        } else {
            setUserCount(data.length);
        }
    }

    const removeRecord = key => {
        console.log(key);
        let newDataSource = [...users];
        if (key != null) {
            let idx = newDataSource.findIndex(data => data.id === key);

            if (idx > -1) {
                newDataSource.splice(idx, 1);
                setUsers(newDataSource);
            }
        }
    };

    const loadUsers = async (startIdx) => {
        const res = await API.get(`/api/user/?p=${startIdx}`);
        const {success, message, data} = res.data;
        if (success) {
            if (startIdx === 0) {
                setUsers(data);
                setCount(data);
            } else {
                let newUsers = users;
                newUsers.push(...data);
                setUsers(newUsers);
                setCount(newUsers);
            }
        } else {
            showError(message);
        }
        setLoading(false);
    };

    const onPaginationChange = (e, {activePage}) => {
        (async () => {
            if (activePage === Math.ceil(users.length / ITEMS_PER_PAGE) + 1) {
                // In this case we have to load more data and then append them.
                await loadUsers(activePage - 1);
            }
            setActivePage(activePage);
        })();
    };

    useEffect(() => {
        loadUsers(0)
            .then()
            .catch((reason) => {
                showError(reason);
            });
    }, []);

    const manageUser = async (username, action, record) => {
        const res = await API.post('/api/user/manage', {
            username, action
        });
        const {success, message} = res.data;
        if (success) {
            showSuccess('操作成功完成！');
            let user = res.data.data;
            let newUsers = [...users];
            if (action === 'delete') {

            } else {
                record.status = user.status;
                record.role = user.role;
            }
            setUsers(newUsers);
        } else {
            showError(message);
        }
    };

    const renderStatus = (status) => {
        switch (status) {
            case 1:
                return <Tag size='large'>已激活</Tag>;
            case 2:
                return (<Tag size='large' color='red'>
                    已封禁
                </Tag>);
            default:
                return (<Tag size='large' color='grey'>
                    未知状态
                </Tag>);
        }
    };

    const searchUsers = async () => {
        if (searchKeyword === '') {
            // if keyword is blank, load files instead.
            await loadUsers(0);
            setActivePage(1);
            return;
        }
        setSearching(true);
        const res = await API.get(`/api/user/search?keyword=${searchKeyword}`);
        const {success, message, data} = res.data;
        if (success) {
            setUsers(data);
            setActivePage(1);
        } else {
            showError(message);
        }
        setSearching(false);
    };

    const handleKeywordChange = async (value) => {
        setSearchKeyword(value.trim());
    };

    const sortUser = (key) => {
        if (users.length === 0) return;
        setLoading(true);
        let sortedUsers = [...users];
        sortedUsers.sort((a, b) => {
            return ('' + a[key]).localeCompare(b[key]);
        });
        if (sortedUsers[0].id === users[0].id) {
            sortedUsers.reverse();
        }
        setUsers(sortedUsers);
        setLoading(false);
    };

    const handlePageChange = page => {
        setActivePage(page);
        if (page === Math.ceil(users.length / ITEMS_PER_PAGE) + 1) {
            // In this case we have to load more data and then append them.
            loadUsers(page - 1).then(r => {
            });
        }
    };

    const pageData = users.slice((activePage - 1) * ITEMS_PER_PAGE, activePage * ITEMS_PER_PAGE);

    const closeAddUser = () => {
        setShowAddUser(false);
    }

    const closeEditUser = () => {
        setShowEditUser(false);
        setEditingUser({
            id: undefined,
        });
    }

    const refresh = async () => {
        if (searchKeyword === '') {
            await loadUsers(activePage - 1);
        } else {
            await searchUsers();
        }
    };

    return (
        <>
            <AddUser refresh={refresh} visible={showAddUser} handleClose={closeAddUser}></AddUser>
            <EditUser refresh={refresh} visible={showEditUser} handleClose={closeEditUser} editingUser={editingUser}></EditUser>
            <Form onSubmit={searchUsers}>
                <Form.Input
                    label='搜索关键字'
                    icon='search'
                    field='keyword'
                    iconPosition='left'
                    placeholder='搜索用户的 ID，用户名，显示名称，以及邮箱地址 ...'
                    value={searchKeyword}
                    loading={searching}
                    onChange={value => handleKeywordChange(value)}
                />
            </Form>

            <Table columns={columns} dataSource={pageData} pagination={{
                currentPage: activePage,
                pageSize: ITEMS_PER_PAGE,
                total: userCount,
                pageSizeOpts: [10, 20, 50, 100],
                onPageChange: handlePageChange,
            }} loading={loading}/>
            <Button theme='light' type='primary' style={{marginRight: 8}} onClick={
                () => {
                    setShowAddUser(true);
                }
            }>添加用户</Button>
        </>
    );
};

export default UsersTable;