import React, {useEffect, useState} from 'react';
import {Button, Divider, Form, Grid, Header, Modal, Message} from 'semantic-ui-react';
import {API, removeTrailingSlash, showError, verifyJSON} from '../helpers';

const SystemSetting = () => {
    let [inputs, setInputs] = useState({
        PasswordLoginEnabled: '',
        PasswordRegisterEnabled: '',
        EmailVerificationEnabled: '',
        GitHubOAuthEnabled: '',
        GitHubClientId: '',
        GitHubClientSecret: '',
        Notice: '',
        SMTPServer: '',
        SMTPPort: '',
        SMTPAccount: '',
        SMTPFrom: '',
        SMTPToken: '',
        ServerAddress: '',
        EpayId: '',
        EpayKey: '',
        Price: 7.3,
        MinTopUp: 1,
        TopupGroupRatio: '',
        PayAddress: '',
        CustomCallbackAddress: '',
        Footer: '',
        WeChatAuthEnabled: '',
        WeChatServerAddress: '',
        WeChatServerToken: '',
        WeChatAccountQRCodeImageURL: '',
        TurnstileCheckEnabled: '',
        TurnstileSiteKey: '',
        TurnstileSecretKey: '',
        RegisterEnabled: '',
        EmailDomainRestrictionEnabled: '',
        EmailDomainWhitelist: ''
    });
    const [originInputs, setOriginInputs] = useState({});
    let [loading, setLoading] = useState(false);
    const [EmailDomainWhitelist, setEmailDomainWhitelist] = useState([]);
    const [restrictedDomainInput, setRestrictedDomainInput] = useState('');
    const [showPasswordWarningModal, setShowPasswordWarningModal] = useState(false);

    const getOptions = async () => {
        const res = await API.get('/api/option/');
        const {success, message, data} = res.data;
        if (success) {
            let newInputs = {};
            data.forEach((item) => {
                if (item.key === 'TopupGroupRatio') {
                    item.value = JSON.stringify(JSON.parse(item.value), null, 2);
                }
                newInputs[item.key] = item.value;
            });
            setInputs({
                ...newInputs,
                EmailDomainWhitelist: newInputs.EmailDomainWhitelist.split(',')
            });
            setOriginInputs(newInputs);

            setEmailDomainWhitelist(newInputs.EmailDomainWhitelist.split(',').map((item) => {
                return {key: item, text: item, value: item};
            }));
        } else {
            showError(message);
        }
    };

    useEffect(() => {
        getOptions().then();
    }, []);

    const updateOption = async (key, value) => {
        setLoading(true);
        switch (key) {
            case 'PasswordLoginEnabled':
            case 'PasswordRegisterEnabled':
            case 'EmailVerificationEnabled':
            case 'GitHubOAuthEnabled':
            case 'WeChatAuthEnabled':
            case 'TurnstileCheckEnabled':
            case 'EmailDomainRestrictionEnabled':
            case 'RegisterEnabled':
                value = inputs[key] === 'true' ? 'false' : 'true';
                break;
            default:
                break;
        }
        const res = await API.put('/api/option/', {
            key,
            value
        });
        const {success, message} = res.data;
        if (success) {
            if (key === 'EmailDomainWhitelist') {
                value = value.split(',');
            }
            if (key === 'Price') {
                value = parseFloat(value);
            }
            setInputs((inputs) => ({
                ...inputs, [key]: value
            }));
        } else {
            showError(message);
        }
        setLoading(false);
    };

    const handleInputChange = async (e, {name, value}) => {
        if (name === 'PasswordLoginEnabled' && inputs[name] === 'true') {
            // block disabling password login
            setShowPasswordWarningModal(true);
            return;
        }
        if (
            name === 'Notice' ||
            name.startsWith('SMTP') ||
            name === 'ServerAddress' ||
            name === 'EpayId' ||
            name === 'EpayKey' ||
            name === 'Price' ||
            name === 'PayAddress' ||
            name === 'GitHubClientId' ||
            name === 'GitHubClientSecret' ||
            name === 'WeChatServerAddress' ||
            name === 'WeChatServerToken' ||
            name === 'WeChatAccountQRCodeImageURL' ||
            name === 'TurnstileSiteKey' ||
            name === 'TurnstileSecretKey' ||
            name === 'EmailDomainWhitelist' ||
            name === 'TopupGroupRatio'
        ) {
            setInputs((inputs) => ({...inputs, [name]: value}));
        } else {
            await updateOption(name, value);
        }
    };

    const submitServerAddress = async () => {
        let ServerAddress = removeTrailingSlash(inputs.ServerAddress);
        await updateOption('ServerAddress', ServerAddress);
    };

    const submitPayAddress = async () => {
        if (inputs.ServerAddress === '') {
            showError('请先填写服务器地址');
            return
        }
        if (originInputs['TopupGroupRatio'] !== inputs.TopupGroupRatio) {
            if (!verifyJSON(inputs.TopupGroupRatio)) {
                showError('充值分组倍率不是合法的 JSON 字符串');
                return;
            }
            await updateOption('TopupGroupRatio', inputs.TopupGroupRatio);
        }
        let PayAddress = removeTrailingSlash(inputs.PayAddress);
        await updateOption('PayAddress', PayAddress);
        if (inputs.EpayId !== '') {
            await updateOption('EpayId', inputs.EpayId);
        }
        if (inputs.EpayKey !== '') {
            await updateOption('EpayKey', inputs.EpayKey);
        }
        await updateOption('Price', "" + inputs.Price);
    };

    const submitSMTP = async () => {
        if (originInputs['SMTPServer'] !== inputs.SMTPServer) {
            await updateOption('SMTPServer', inputs.SMTPServer);
        }
        if (originInputs['SMTPAccount'] !== inputs.SMTPAccount) {
            await updateOption('SMTPAccount', inputs.SMTPAccount);
        }
        if (originInputs['SMTPFrom'] !== inputs.SMTPFrom) {
            await updateOption('SMTPFrom', inputs.SMTPFrom);
        }
        if (
            originInputs['SMTPPort'] !== inputs.SMTPPort &&
            inputs.SMTPPort !== ''
        ) {
            await updateOption('SMTPPort', inputs.SMTPPort);
        }
        if (
            originInputs['SMTPToken'] !== inputs.SMTPToken &&
            inputs.SMTPToken !== ''
        ) {
            await updateOption('SMTPToken', inputs.SMTPToken);
        }
    };


    const submitEmailDomainWhitelist = async () => {
        if (
            originInputs['EmailDomainWhitelist'] !== inputs.EmailDomainWhitelist.join(',') &&
            inputs.SMTPToken !== ''
        ) {
            await updateOption('EmailDomainWhitelist', inputs.EmailDomainWhitelist.join(','));
        }
    };

    const submitWeChat = async () => {
        if (originInputs['WeChatServerAddress'] !== inputs.WeChatServerAddress) {
            await updateOption(
                'WeChatServerAddress',
                removeTrailingSlash(inputs.WeChatServerAddress)
            );
        }
        if (
            originInputs['WeChatAccountQRCodeImageURL'] !==
            inputs.WeChatAccountQRCodeImageURL
        ) {
            await updateOption(
                'WeChatAccountQRCodeImageURL',
                inputs.WeChatAccountQRCodeImageURL
            );
        }
        if (
            originInputs['WeChatServerToken'] !== inputs.WeChatServerToken &&
            inputs.WeChatServerToken !== ''
        ) {
            await updateOption('WeChatServerToken', inputs.WeChatServerToken);
        }
    };

    const submitGitHubOAuth = async () => {
        if (originInputs['GitHubClientId'] !== inputs.GitHubClientId) {
            await updateOption('GitHubClientId', inputs.GitHubClientId);
        }
        if (
            originInputs['GitHubClientSecret'] !== inputs.GitHubClientSecret &&
            inputs.GitHubClientSecret !== ''
        ) {
            await updateOption('GitHubClientSecret', inputs.GitHubClientSecret);
        }
    };

    const submitTurnstile = async () => {
        if (originInputs['TurnstileSiteKey'] !== inputs.TurnstileSiteKey) {
            await updateOption('TurnstileSiteKey', inputs.TurnstileSiteKey);
        }
        if (
            originInputs['TurnstileSecretKey'] !== inputs.TurnstileSecretKey &&
            inputs.TurnstileSecretKey !== ''
        ) {
            await updateOption('TurnstileSecretKey', inputs.TurnstileSecretKey);
        }
    };

    const submitNewRestrictedDomain = () => {
        const localDomainList = inputs.EmailDomainWhitelist;
        if (restrictedDomainInput !== '' && !localDomainList.includes(restrictedDomainInput)) {
            setRestrictedDomainInput('');
            setInputs({
                ...inputs,
                EmailDomainWhitelist: [...localDomainList, restrictedDomainInput],
            });
            setEmailDomainWhitelist([...EmailDomainWhitelist, {
                key: restrictedDomainInput,
                text: restrictedDomainInput,
                value: restrictedDomainInput,
            }]);
        }
    }

    return (
        <Grid columns={1}>
            <Grid.Column>
                <Form loading={loading}>
                    <Header as='h3'>通用设置</Header>
                    <Form.Group widths='equal'>
                        <Form.Input
                            label='服务器地址'
                            placeholder='例如：https://yourdomain.com'
                            value={inputs.ServerAddress}
                            name='ServerAddress'
                            onChange={handleInputChange}
                        />
                    </Form.Group>
                    <Form.Button onClick={submitServerAddress}>
                        更新服务器地址
                    </Form.Button>
                    <Divider/>
                    <Header as='h3'>支付设置（当前仅支持易支付接口，默认使用上方服务器地址作为回调地址！）</Header>
                    <Form.Group widths='equal'>
                        <Form.Input
                            label='支付地址，不填写则不启用在线支付'
                            placeholder='例如：https://yourdomain.com'
                            value={inputs.PayAddress}
                            name='PayAddress'
                            onChange={handleInputChange}
                        />
                        <Form.Input
                            label='易支付商户ID'
                            placeholder='例如：0001'
                            value={inputs.EpayId}
                            name='EpayId'
                            onChange={handleInputChange}
                        />
                        <Form.Input
                            label='易支付商户密钥'
                            placeholder='例如：dejhfueqhujasjmndbjkqaw'
                            value={inputs.EpayKey}
                            name='EpayKey'
                            onChange={handleInputChange}
                        />

                    </Form.Group>
                    <Form.Group widths='equal'>
                        <Form.Input
                          label='回调地址，不填写则使用上方服务器地址作为回调地址'
                          placeholder='例如：https://yourdomain.com'
                          value={inputs.CustomCallbackAddress}
                          name='CustomCallbackAddress'
                          onChange={handleInputChange}
                        />
                        <Form.Input
                          label='充值价格（x元/美金）'
                          placeholder='例如：7，就是7元/美金'
                          value={inputs.Price}
                          name='Price'
                          min={0}
                          onChange={handleInputChange}
                        />
                        <Form.Input
                          label='最低充值数量'
                          placeholder='例如：2，就是最低充值2$'
                          value={inputs.MinTopUp}
                          name='MinTopUp'
                          min={1}
                          onChange={handleInputChange}
                        />
                    </Form.Group>
                    <Form.Group widths='equal'>
                        <Form.TextArea
                            label='充值分组倍率'
                            name='TopupGroupRatio'
                            onChange={handleInputChange}
                            style={{minHeight: 250, fontFamily: 'JetBrains Mono, Consolas'}}
                            autoComplete='new-password'
                            value={inputs.TopupGroupRatio}
                            placeholder='为一个 JSON 文本，键为组名称，值为倍率'
                        />
                    </Form.Group>
                    <Form.Button onClick={submitPayAddress}>
                        更新支付设置
                    </Form.Button>
                    <Divider/>
                    <Header as='h3'>配置登录注册</Header>
                    <Form.Group inline>
                        <Form.Checkbox
                            checked={inputs.PasswordLoginEnabled === 'true'}
                            label='允许通过密码进行登录'
                            name='PasswordLoginEnabled'
                            onChange={handleInputChange}
                        />
                        {
                            showPasswordWarningModal &&
                            <Modal
                                open={showPasswordWarningModal}
                                onClose={() => setShowPasswordWarningModal(false)}
                                size={'tiny'}
                                style={{maxWidth: '450px'}}
                            >
                                <Modal.Header>警告</Modal.Header>
                                <Modal.Content>
                                    <p>取消密码登录将导致所有未绑定其他登录方式的用户（包括管理员）无法通过密码登录，确认取消？</p>
                                </Modal.Content>
                                <Modal.Actions>
                                    <Button onClick={() => setShowPasswordWarningModal(false)}>取消</Button>
                                    <Button
                                        color='yellow'
                                        onClick={async () => {
                                            setShowPasswordWarningModal(false);
                                            await updateOption('PasswordLoginEnabled', 'false');
                                        }}
                                    >
                                        确定
                                    </Button>
                                </Modal.Actions>
                            </Modal>
                        }
                        <Form.Checkbox
                            checked={inputs.PasswordRegisterEnabled === 'true'}
                            label='允许通过密码进行注册'
                            name='PasswordRegisterEnabled'
                            onChange={handleInputChange}
                        />
                        <Form.Checkbox
                            checked={inputs.EmailVerificationEnabled === 'true'}
                            label='通过密码注册时需要进行邮箱验证'
                            name='EmailVerificationEnabled'
                            onChange={handleInputChange}
                        />
                        <Form.Checkbox
                            checked={inputs.GitHubOAuthEnabled === 'true'}
                            label='允许通过 GitHub 账户登录 & 注册'
                            name='GitHubOAuthEnabled'
                            onChange={handleInputChange}
                        />
                        <Form.Checkbox
                            checked={inputs.WeChatAuthEnabled === 'true'}
                            label='允许通过微信登录 & 注册'
                            name='WeChatAuthEnabled'
                            onChange={handleInputChange}
                        />
                    </Form.Group>
                    <Form.Group inline>
                        <Form.Checkbox
                            checked={inputs.RegisterEnabled === 'true'}
                            label='允许新用户注册（此项为否时，新用户将无法以任何方式进行注册）'
                            name='RegisterEnabled'
                            onChange={handleInputChange}
                        />
                        <Form.Checkbox
                            checked={inputs.TurnstileCheckEnabled === 'true'}
                            label='启用 Turnstile 用户校验'
                            name='TurnstileCheckEnabled'
                            onChange={handleInputChange}
                        />
                    </Form.Group>
                    <Divider/>
                    <Header as='h3'>
                        配置邮箱域名白名单
                        <Header.Subheader>用以防止恶意用户利用临时邮箱批量注册</Header.Subheader>
                    </Header>
                    <Form.Group widths={3}>
                        <Form.Checkbox
                            label='启用邮箱域名白名单'
                            name='EmailDomainRestrictionEnabled'
                            onChange={handleInputChange}
                            checked={inputs.EmailDomainRestrictionEnabled === 'true'}
                        />
                    </Form.Group>
                    <Form.Group widths={2}>
                        <Form.Dropdown
                            label='允许的邮箱域名'
                            placeholder='允许的邮箱域名'
                            name='EmailDomainWhitelist'
                            required
                            fluid
                            multiple
                            selection
                            onChange={handleInputChange}
                            value={inputs.EmailDomainWhitelist}
                            autoComplete='new-password'
                            options={EmailDomainWhitelist}
                        />
                        <Form.Input
                            label='添加新的允许的邮箱域名'
                            action={
                                <Button type='button' onClick={() => {
                                    submitNewRestrictedDomain();
                                }}>填入</Button>
                            }
                            onKeyDown={(e) => {
                                if (e.key === 'Enter') {
                                    submitNewRestrictedDomain();
                                }
                            }}
                            autoComplete='new-password'
                            placeholder='输入新的允许的邮箱域名'
                            value={restrictedDomainInput}
                            onChange={(e, {value}) => {
                                setRestrictedDomainInput(value);
                            }}
                        />
                    </Form.Group>
                    <Form.Button onClick={submitEmailDomainWhitelist}>保存邮箱域名白名单设置</Form.Button>
                    <Divider/>
                    <Header as='h3'>
                        配置 SMTP
                        <Header.Subheader>用以支持系统的邮件发送</Header.Subheader>
                    </Header>
                    <Form.Group widths={3}>
                        <Form.Input
                            label='SMTP 服务器地址'
                            name='SMTPServer'
                            onChange={handleInputChange}
                            autoComplete='new-password'
                            value={inputs.SMTPServer}
                            placeholder='例如：smtp.qq.com'
                        />
                        <Form.Input
                            label='SMTP 端口'
                            name='SMTPPort'
                            onChange={handleInputChange}
                            autoComplete='new-password'
                            value={inputs.SMTPPort}
                            placeholder='默认: 587'
                        />
                        <Form.Input
                            label='SMTP 账户'
                            name='SMTPAccount'
                            onChange={handleInputChange}
                            autoComplete='new-password'
                            value={inputs.SMTPAccount}
                            placeholder='通常是邮箱地址'
                        />
                    </Form.Group>
                    <Form.Group widths={3}>
                        <Form.Input
                            label='SMTP 发送者邮箱'
                            name='SMTPFrom'
                            onChange={handleInputChange}
                            autoComplete='new-password'
                            value={inputs.SMTPFrom}
                            placeholder='通常和邮箱地址保持一致'
                        />
                        <Form.Input
                            label='SMTP 访问凭证'
                            name='SMTPToken'
                            onChange={handleInputChange}
                            type='password'
                            autoComplete='new-password'
                            checked={inputs.RegisterEnabled === 'true'}
                            placeholder='敏感信息不会发送到前端显示'
                        />
                    </Form.Group>
                    <Form.Button onClick={submitSMTP}>保存 SMTP 设置</Form.Button>
                    <Divider/>
                    <Header as='h3'>
                        配置 GitHub OAuth App
                        <Header.Subheader>
                            用以支持通过 GitHub 进行登录注册，
                            <a href='https://github.com/settings/developers' target='_blank'>
                                点击此处
                            </a>
                            管理你的 GitHub OAuth App
                        </Header.Subheader>
                    </Header>
                    <Message>
                        Homepage URL 填 <code>{inputs.ServerAddress}</code>
                        ，Authorization callback URL 填{' '}
                        <code>{`${inputs.ServerAddress}/oauth/github`}</code>
                    </Message>
                    <Form.Group widths={3}>
                        <Form.Input
                            label='GitHub Client ID'
                            name='GitHubClientId'
                            onChange={handleInputChange}
                            autoComplete='new-password'
                            value={inputs.GitHubClientId}
                            placeholder='输入你注册的 GitHub OAuth APP 的 ID'
                        />
                        <Form.Input
                            label='GitHub Client Secret'
                            name='GitHubClientSecret'
                            onChange={handleInputChange}
                            type='password'
                            autoComplete='new-password'
                            value={inputs.GitHubClientSecret}
                            placeholder='敏感信息不会发送到前端显示'
                        />
                    </Form.Group>
                    <Form.Button onClick={submitGitHubOAuth}>
                        保存 GitHub OAuth 设置
                    </Form.Button>
                    <Divider/>
                    <Header as='h3'>
                        配置 WeChat Server
                        <Header.Subheader>
                            用以支持通过微信进行登录注册，
                            <a
                                href='https://github.com/songquanpeng/wechat-server'
                                target='_blank'
                            >
                                点击此处
                            </a>
                            了解 WeChat Server
                        </Header.Subheader>
                    </Header>
                    <Form.Group widths={3}>
                        <Form.Input
                            label='WeChat Server 服务器地址'
                            name='WeChatServerAddress'
                            placeholder='例如：https://yourdomain.com'
                            onChange={handleInputChange}
                            autoComplete='new-password'
                            value={inputs.WeChatServerAddress}
                        />
                        <Form.Input
                            label='WeChat Server 访问凭证'
                            name='WeChatServerToken'
                            type='password'
                            onChange={handleInputChange}
                            autoComplete='new-password'
                            value={inputs.WeChatServerToken}
                            placeholder='敏感信息不会发送到前端显示'
                        />
                        <Form.Input
                            label='微信公众号二维码图片链接'
                            name='WeChatAccountQRCodeImageURL'
                            onChange={handleInputChange}
                            autoComplete='new-password'
                            value={inputs.WeChatAccountQRCodeImageURL}
                            placeholder='输入一个图片链接'
                        />
                    </Form.Group>
                    <Form.Button onClick={submitWeChat}>
                        保存 WeChat Server 设置
                    </Form.Button>
                    <Divider/>
                    <Header as='h3'>
                        配置 Turnstile
                        <Header.Subheader>
                            用以支持用户校验，
                            <a href='https://dash.cloudflare.com/' target='_blank'>
                                点击此处
                            </a>
                            管理你的 Turnstile Sites，推荐选择 Invisible Widget Type
                        </Header.Subheader>
                    </Header>
                    <Form.Group widths={3}>
                        <Form.Input
                            label='Turnstile Site Key'
                            name='TurnstileSiteKey'
                            onChange={handleInputChange}
                            autoComplete='new-password'
                            value={inputs.TurnstileSiteKey}
                            placeholder='输入你注册的 Turnstile Site Key'
                        />
                        <Form.Input
                            label='Turnstile Secret Key'
                            name='TurnstileSecretKey'
                            onChange={handleInputChange}
                            type='password'
                            autoComplete='new-password'
                            value={inputs.TurnstileSecretKey}
                            placeholder='敏感信息不会发送到前端显示'
                        />
                    </Form.Group>
                    <Form.Button onClick={submitTurnstile}>
                        保存 Turnstile 设置
                    </Form.Button>
                </Form>
            </Grid.Column>
        </Grid>
    );
};

export default SystemSetting;