import {useStore} from "../store/store.ts";
import {useEffect, useState} from "react";
import {InstalledPlugin, PluginDef, SearchParams} from "./Plugin.ts";
import {useDebounce} from "../utils/useDebounce.ts";
import {Trans, useTranslation} from "react-i18next";


export const HomePage = () => {
    const pluginsSocket = useStore(state=>state.pluginsSocket)
    const [plugins,setPlugins] = useState<PluginDef[]>([])
    const [installedPlugins, setInstalledPlugins] = useState<InstalledPlugin[]>([])
    const [searchParams, setSearchParams] = useState<SearchParams>({
        offset: 0,
        limit: 99999,
        sortBy: 'name',
        sortDir: 'asc',
        searchTerm: ''
    })
    const [searchTerm, setSearchTerm] = useState<string>('')
    const {t} = useTranslation()


    useEffect(() => {
        if(!pluginsSocket){
            return
        }

        pluginsSocket.on('results:installed', (data:{
            installed: InstalledPlugin[]
        })=>{
            setInstalledPlugins(data.installed)
        })

        pluginsSocket.on('results:updatable', (data) => {
            data.updatable.forEach((pluginName: string) => {
                setInstalledPlugins(installedPlugins.map(plugin => {
                    if (plugin.name === pluginName) {
                        return {
                            ...plugin,
                            updatable: true
                        }
                    }
                    return plugin
                }))
            })
        })

        pluginsSocket.on('finished:install', () => {
            pluginsSocket!.emit('getInstalled');
        })

        pluginsSocket.on('finished:uninstall', () => {
            console.log("Finished uninstall")
        })


        // Reload on reconnect
        pluginsSocket.on('connect', ()=>{
            // Initial retrieval of installed plugins
            pluginsSocket.emit('getInstalled');
            pluginsSocket.emit('search', searchParams)
        })

        pluginsSocket.emit('getInstalled');

        // check for updates every 5mins
        const interval = setInterval(() => {
            pluginsSocket.emit('checkUpdates');
        }, 1000 * 60 * 5);

        return ()=>{
            clearInterval(interval)
        }
        }, [pluginsSocket]);


    useEffect(() => {
        if (!pluginsSocket) {
            return
        }

        pluginsSocket?.emit('search', searchParams)


        pluginsSocket!.on('results:search', (data: {
            results: PluginDef[]
        }) => {
            setPlugins(data.results)
        })


    }, [searchParams, pluginsSocket]);

    const uninstallPlugin  = (pluginName: string)=>{
        pluginsSocket!.emit('uninstall', pluginName);
        // Remove plugin
        setInstalledPlugins(installedPlugins.filter(i=>i.name !== pluginName))
    }

    const installPlugin = (pluginName: string)=>{
        pluginsSocket!.emit('install', pluginName);
        setPlugins(plugins.filter(plugin=>plugin.name !== pluginName))
    }


    useDebounce(()=>{
        setSearchParams({
            ...searchParams,
            offset: 0,
            searchTerm: searchTerm
        })
    }, 500, [searchTerm])

    return <div>
        <h1><Trans i18nKey="admin_plugins"/></h1>

        <h2><Trans i18nKey="admin_plugins.installed"/></h2>

        <table>
            <thead>
            <tr>
                <th><Trans i18nKey="admin_plugins.name"/></th>
                <th><Trans i18nKey="admin_plugins.version"/></th>
                <th></th>
            </tr>
            </thead>
            <tbody style={{overflow: 'auto'}}>
            {installedPlugins.map((plugin, index) => {
                return <tr key={index}>
                    <td>{plugin.name}</td>
                    <td>{plugin.version}</td>
                    <td>
                    {
                        plugin.updatable ?
                            <button onClick={() => installPlugin(plugin.name)}>Update</button>
                            : <button disabled={plugin.name == "ep_etherpad-lite"}
                                      onClick={() => uninstallPlugin(plugin.name)}><Trans
                            i18nKey="admin_plugins.installed_uninstall.value"/></button>

                    }
                    </td>
                        </tr>
                    })}
                </tbody>
            </table>


                <h2><Trans i18nKey="admin_plugins.available"/></h2>

                <input className="search-field" placeholder={t('admin_plugins.available_search.placeholder')} type="text" value={searchTerm} onChange={v=>{
            setSearchTerm(v.target.value)
        }}/>

        <table>
            <thead>
            <tr>
                <th><Trans i18nKey="admin_plugins.name"/></th>
                <th style={{width: '30%'}}><Trans i18nKey="admin_plugins.description"/></th>
                <th><Trans i18nKey="admin_plugins.version"/></th>
                <th><Trans i18nKey="admin_plugins.last-update"/></th>
                <th></th>
            </tr>
            </thead>
            <tbody style={{overflow: 'auto'}}>
            {plugins.map((plugin) => {
                return <tr key={plugin.name}>
                    <td><a rel="noopener noreferrer" href={`https://npmjs.com/${plugin.name}`} target="_blank">{plugin.name}</a></td>
                    <td>{plugin.description}</td>
                    <td>{plugin.version}</td>
                    <td>{plugin.time}</td>
                    <td>
                        <button onClick={() => installPlugin(plugin.name)}><Trans i18nKey="admin_plugins.available_install.value"/></button>
                    </td>
                </tr>
            })}
            </tbody>
        </table>
    </div>
}