// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.

import React from 'react';
import {
    View,
    Text,
    Switch,
} from 'react-native';

import FormattedText from '@components/formatted_text';
import Markdown from '@components/markdown';
import {Theme} from '@mm-redux/types/preferences';
import {getMarkdownBlockStyles, getMarkdownTextStyles} from '@utils/markdown';
import {
    changeOpacity,
    makeStyleSheetFromTheme,
} from '@utils/theme';

type Props = {
    id: string;
    label?: string | {id: string; defaultMessage: string};
    value: boolean;
    placeholder?: string;
    helpText?: string;
    errorText?: string;
    optional?: boolean;
    disabled?: boolean;
    theme: Theme;
    onChange: (name: string, value: boolean) => void;
}

export default function BoolSetting(props: Props) {
    const {
        id,
        label,
        value,
        placeholder,
        helpText,
        errorText,
        optional,
        theme,
        disabled,
        onChange,
    } = props;
    const style = getStyleSheet(theme);
    const textStyles = getMarkdownTextStyles(theme);
    const blockStyles = getMarkdownBlockStyles(theme);

    let optionalContent;
    let asterisk;
    if (optional) {
        optionalContent = (
            <FormattedText
                style={style.optional}
                id='channel_modal.optional'
                defaultMessage='(optional)'
            />
        );
    } else {
        asterisk = <Text style={style.asterisk}>{' *'}</Text>;
    }

    let labelContent;
    if (label) {
        labelContent = (
            <View style={style.labelContainer}>
                <Text style={style.label}>
                    {label}
                </Text>
                {asterisk}
                {optionalContent}
            </View>

        );
    }

    let helpTextContent;
    if (helpText) {
        helpTextContent = (
            <View style={style.helpTextContainer} >
                <Markdown
                    baseTextStyle={style.helpText}
                    textStyles={textStyles}
                    blockStyles={blockStyles}
                    value={helpText}
                />
            </View>
        );
    }

    let errorTextContent;
    if (errorText) {
        errorTextContent = (
            <View style={style.errorTextContainer} >
                <Markdown
                    baseTextStyle={style.errorText}
                    textStyles={textStyles}
                    blockStyles={blockStyles}
                    value={errorText}
                />
            </View>
        );
    }

    const noediting = disabled ? style.disabled : null;

    return (
        <>
            <View>
                {labelContent}
            </View>
            <View style={style.separator}/>
            <View style={[style.inputContainer, noediting]}>
                <Text style={style.placeholderText}>
                    {placeholder}
                </Text>
                <Switch
                    onValueChange={(newValue: boolean) => onChange(id, newValue)}
                    value={value}
                    style={style.inputSwitch}
                    disabled={disabled}
                />
            </View>
            <View style={style.separator}/>
            <View>
                {helpTextContent}
                {errorTextContent}
            </View>
        </>
    );
}

const getStyleSheet = makeStyleSheetFromTheme((theme: Theme) => {
    return {
        labelContainer: {
            flexDirection: 'row',
            marginTop: 15,
            marginBottom: 10,
        },
        label: {
            fontSize: 14,
            color: theme.centerChannelColor,
            marginLeft: 15,
        },
        inputContainer: {
            backgroundColor: theme.centerChannelBg,
            flexDirection: 'row',
            alignItems: 'center',
            paddingHorizontal: 15,
            height: 40,
        },
        disabled: {
            backgroundColor: changeOpacity(theme.centerChannelColor, 0.1),
        },
        placeholderText: {
            color: changeOpacity(theme.centerChannelColor, 0.5),
            fontSize: 15,
        },
        inputSwitch: {
            position: 'absolute',
            right: 12,
        },
        separator: {
            backgroundColor: changeOpacity(theme.centerChannelColor, 0.1),
            height: 1,
            width: '100%',
        },
        optional: {
            color: changeOpacity(theme.centerChannelColor, 0.5),
            fontSize: 14,
            marginLeft: 5,
        },
        helpTextContainer: {
            marginHorizontal: 15,
            marginTop: 10,
        },
        helpText: {
            fontSize: 12,
            color: changeOpacity(theme.centerChannelColor, 0.5),
        },
        errorTextContainer: {
            marginHorizontal: 15,
            marginVertical: 10,
        },
        errorText: {
            fontSize: 12,
            color: theme.errorTextColor,
        },
        asterisk: {
            color: theme.errorTextColor,
            fontSize: 14,
        },
    };
});