import {Button, Paragraph, useTheme} from "react-native-paper";
import {Globe, History, Plus, ServerOff} from "lucide-react-native";
import {FlatList, NativeSyntheticEvent, Text, View} from "react-native";
import React, {useCallback, useLayoutEffect, useMemo, useState} from "react";
import ContextMenu, {ContextMenuOnPressNativeEvent} from "react-native-context-menu-view";
import {EmptyStatePlaceholder} from "../components/EmptyStatePlaceholder";
import {AMUICard, AMUICardDetail} from "../components/AMUICard";
import TimeAgo from "../components/TimeAgo";

import RealmContext from "../models/RealmContext";
import {AMServer} from "../models/AMServer";

const {useRealm, useQuery} = RealmContext;

function ServerCard(props: { server: AMServer, navigation: any }) {
    const realm = useRealm();
    const pageCallback = useCallback(() => {
        props.navigation.navigate('server', {
            serverId: props.server._id.toHexString()
        });
    }, [props.navigation, props.server]);

    const pageContextMenuCallback = useCallback((action: NativeSyntheticEvent<ContextMenuOnPressNativeEvent>) => {
        switch (action.nativeEvent.index) {
            case 0:
                pageCallback();
                break;

            case 1:
                realm.write(() => {
                    realm.delete(props.server);
                });
                break;
        }
    }, [realm, props.server]);

    return (
        <ContextMenu onPress={pageContextMenuCallback} actions={[
            {title: `Select ${props.server.serverName}`, systemIcon: "chevron.right"},
            {title: "Delete Server", systemIcon: "trash", destructive: true}
        ]}>
            <AMUICard title={props.server.serverName} onPress={pageCallback}>
                <AMUICardDetail>
                    <Globe size={18} color="gray"/>
                    <Text style={{color: "gray", fontFamily: "JetBrainsMono_400Regular"}}>
                        {props.server.serverAddress}
                    </Text>
                </AMUICardDetail>
                <AMUICardDetail>
                    <History size={18} color="gray"/>
                    {props.server.lastUsed
                        ? (<TimeAgo style={{color: "gray"}} dateTo={props.server.lastUsed}/>)
                        : (<Paragraph style={{color: "gray"}}>never</Paragraph>)}
                </AMUICardDetail>
            </AMUICard>
        </ContextMenu>
    )
}

export default function ServerManager({navigation}) {
    const theme = useTheme();
    const [searchQuery, setSearchQuery] = useState('');

    const query = useQuery(AMServer);
    const servers = useMemo(() => {
        let q = query;

        if (searchQuery !== '') {
            q = q.filtered("serverName CONTAINS[c] $0 OR serverAddress CONTAINS[c] $0", searchQuery);
        }

        return q.sorted("lastUsed");
    }, [query, searchQuery]);

    // enable searchbar
    useLayoutEffect(() => {
        navigation.setOptions({
            headerSearchBarOptions: {
                type: "text",
                value: searchQuery,
                autoCorrect: "none",
                autoCapitalize: "none",
                onChangeText: e => setSearchQuery(e.nativeEvent.text)
            },
        })
    }, [navigation, setSearchQuery]);

    if (!servers.length) {
        return (
            <View style={{gap: 10, flex: 1, justifyContent: "center", alignItems: "center"}}>
                <EmptyStatePlaceholder message="No servers found" icon={<ServerOff color="gray"/>}/>
                {(!searchQuery || !query.length) && (
                    <Button mode="text"
                            onPress={() => navigation.navigate('add-server')}
                            icon={() => <Plus size={18} color={theme.colors.primary}/>}>Add Server</Button>)}
            </View>
        );
    }

    return (
        <FlatList contentInsetAdjustmentBehavior="always"
                  data={servers}
                  keyExtractor={i => i._id.toString()}
                  style={{padding: 16, paddingTop: 24}}
                  contentContainerStyle={{paddingBottom: 40}}
                  ItemSeparatorComponent={() => <View style={{height: 15}}/>}
                  renderItem={i => <ServerCard navigation={navigation} server={i.item}/>}/>
    )
}