import { TextField } from '@material-ui/core';
import classNames from 'classnames';
import React, { useState, useEffect } from 'react';
import { styles as commonStyles } from '../../../component/common';
import { IApiTokenCreate } from '../../../hooks/api/actions/useApiTokensApi/useApiTokensApi';
import useEnvironments from '../../../hooks/api/getters/useEnvironments/useEnvironments';
import useProjects from '../../../hooks/api/getters/useProjects/useProjects';
import useUiConfig from '../../../hooks/api/getters/useUiConfig/useUiConfig';
import ConditionallyRender from '../../common/ConditionallyRender';
import Dialogue from '../../common/Dialogue';
import GeneralSelect from '../../common/GeneralSelect/GeneralSelect';

import { useStyles } from './styles';

const ALL = '*';
const TYPE_ADMIN = 'ADMIN';
const TYPE_CLIENT = 'CLIENT';

interface IApiTokenCreateProps {
    showDialog: boolean;
    closeDialog: () => void;
    createToken: (token: IApiTokenCreate) => Promise<void>;
}

interface IDataError {
    username?: string;
    general?: string;
}

const INITIAL_DATA: IApiTokenCreate = {
    username: '',
    type: TYPE_CLIENT,
    project: ALL,
};

const ApiTokenCreate = ({
    showDialog,
    closeDialog,
    createToken,
}: IApiTokenCreateProps) => {
    const styles = useStyles();
    const [data, setData] = useState(INITIAL_DATA);
    const [error, setError] = useState<IDataError>({});
    const { projects } = useProjects();
    const { environments } = useEnvironments();
    const { uiConfig } = useUiConfig();

    useEffect(() => {
        if (
            environments &&
            environments.length > 0 &&
            data.type === TYPE_CLIENT &&
            !data.environment
        ) {
            setData({ ...data, environment: environments[0].name });
        }
    }, [data, environments]);

    const clear = () => {
        const environment =
            environments && environments.length > 0
                ? environments[0].name
                : undefined;
        setData({ ...INITIAL_DATA, environment });
        setError({});
    };

    const onCancel = (e: Event) => {
        clear();
        closeDialog();
    };

    const isValid = () => {
        if (!data.username) {
            setError({ username: 'Username is required.' });
            return false;
        } else {
            setError({});
            return true;
        }
    };

    const submit = async () => {
        if (!isValid()) {
            return;
        }

        try {
            await createToken(data);
            clear();
            closeDialog();
        } catch (error) {
            setError({ general: 'Unable to create new API token' });
        }
    };

    const setType = (event: React.ChangeEvent<{ value: string }>) => {
        const value = event.target.value;
        if (value === TYPE_ADMIN) {
            setData({ ...data, type: value, environment: ALL, project: ALL });
        } else {
            setData({
                ...data,
                type: value,
                environment: environments[0].name,
            });
        }
    };

    const setUsername = (event: React.ChangeEvent<{ value: string }>) => {
        const value = event.target.value;
        setData({ ...data, username: value });
    };

    const setProject = (event: React.ChangeEvent<{ value: string }>) => {
        const value = event.target.value;
        setData({ ...data, project: value });
    };

    const setEnvironment = (event: React.ChangeEvent<{ value: string }>) => {
        const value = event.target.value;
        setData({ ...data, environment: value });
    };

    const selectableProjects = [{ id: '*', name: 'ALL' }, ...projects].map(
        i => ({
            key: i.id,
            label: i.name,
            title: i.name,
        })
    );

    const selectableEnvs =
        data.type === TYPE_ADMIN
            ? [{ key: '*', label: 'ALL' }]
            : environments.map(i => ({
                  key: i.name,
                  label: i.name,
                  title: i.name,
              }));

    const selectableTypes = [
        { key: 'CLIENT', label: 'Client', title: 'Client SDK token' },
        { key: 'ADMIN', label: 'Admin', title: 'Admin API token' },
    ];

    return (
        <Dialogue
            onClick={() => submit()}
            open={showDialog}
            onClose={onCancel}
            primaryButtonText="Create"
            secondaryButtonText="Cancel"
            title="New API token"
        >
            <form
                onSubmit={submit}
                className={classNames(
                    styles.addApiKeyForm,
                    commonStyles.contentSpacing
                )}
            >
                <TextField
                    value={data.username}
                    name="username"
                    onChange={setUsername}
                    onBlur={isValid}
                    label="Username"
                    style={{ width: '200px' }}
                    error={error.username !== undefined}
                    helperText={error.username}
                    variant="outlined"
                    size="small"
                    required
                />
                <GeneralSelect
                    disabled={false}
                    options={selectableTypes}
                    value={data.type}
                    onChange={setType}
                    label="Token Type"
                    id="api_key_type"
                    name="type"
                    className={undefined}
                    classes={undefined}
                />
                <GeneralSelect
                    disabled={data.type === TYPE_ADMIN}
                    options={selectableProjects}
                    value={data.project}
                    onChange={setProject}
                    label="Project"
                    id="api_key_project"
                    name="project"
                    className={undefined}
                    classes={undefined}
                />
                <ConditionallyRender condition={uiConfig?.flags.E} show={
                    <>
                        <GeneralSelect
                            disabled={data.type === TYPE_ADMIN}
                            options={selectableEnvs}
                            value={data.environment}
                            required
                            onChange={setEnvironment}
                            label="Environment"
                            id="api_key_environment"
                            name="environment"
                            className={undefined}
                            classes={undefined}
                        />
                    </>
                } />
            </form>
        </Dialogue>
    );
};

export default ApiTokenCreate;