import Discord,{SlashCommandBuilder} from 'discord.js';
import {version} from 'typescript';
import si from 'systeminformation';
import TClient from 'src/client';
import os from 'node:os';
export default {
    async run(client: TClient, interaction: Discord.ChatInputCommandInteraction<'cached'>){
            // Host specification (L9-L22, L55-L70)
            // Bytes conversion
            function formatBytes(bytes:number, decimals:number = 2) {
                if (bytes === 0) return '0 Bytes';
                const k = 1024;
                const dm = decimals < 0 ? 0 : decimals;
                const sizes = ['Bytes', 'KB', 'MB', 'GB'];
                const i = Math.floor(Math.log(bytes) / Math.log(k));
                return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];
            };
            var DJSver = require('discord.js').version;
            const cpu = await si.cpu();
            const ram = await si.mem();
            const osInfo = await si.osInfo();
            const currentLoad = await si.currentLoad();
            
            // Command usage (L25-L54)
            const columns = ['Command name', 'Count'];
            const includedCommands = client.commands.filter(x=>x.uses).sort((a,b)=>b.uses - a.uses);
            if (includedCommands.size == 0) return interaction.reply(`No commands have been used yet.\nUptime: **${client.formatTime(client.uptime as number, 3, {longNames: true, commas: true})}**`);
            const nameLength = Math.max(...includedCommands.map(x=>x.default.data.name.length), columns[0].length) + 2;
            const amountLength = Math.max(...includedCommands.map(x=>x.uses.toString().length), columns[1].length) + 1;
            const rows = [`${columns[0] + ' '.repeat(nameLength - columns[0].length)}|${' '.repeat(amountLength - columns[1].length) + columns[1]}\n`, '-'.repeat(nameLength) + '-'.repeat(amountLength) + '\n'];
            includedCommands.forEach(command=>{
                const name = command.default.data.name;
                const count = command.uses.toString();
                rows.push(`${name + ' '.repeat(nameLength - name.length)}${' '.repeat(amountLength - count.length) + count}\n`);
            });
            const embed = new client.embed().setColor(client.config.embedColor).setTitle('Statistics: Command Usage')
            .setDescription([
                'List of commands that have been used in this session, ordered by amount of use. Table contains command name and amount of uses.',
                `Total amount of commands used in this session: ${client.commands.filter(x=>x.uses).map(x=>x.uses).reduce((a,b)=>a+b, 0)}`
            ].join('\n'))
            if (rows.join('').length > 1024){
                let fieldValue = '';
                rows.forEach(row=>{
                    if (fieldValue.length + row.length > 1024){
                        embed.addFields({name: '\u200b', value: `\`\`\`\n${fieldValue}\`\`\``});
                        fieldValue = row;
                    } else {
                        fieldValue += row;
                    }
                });
                embed.addFields({name: '\u200b', value: `\`\`\`\n${fieldValue}\`\`\``});
            } else {
                embed.addFields({name: '\u200b', value: `\`\`\`\n${rows.join('')}\`\`\``})
            };
            embed.addFields(
                {name: '> __Dependencies__', value: [
                    `**TypeScript:** ${version}`,
                    `**NodeJS:** ${process.version}`,
                    `**DiscordJS:** ${DJSver}`,
                    `**Axios:** ${client.axios.VERSION}`
                ].join('\n')},
                {name: '> __Host__', value: [
                    `**Operating System:** ${osInfo.distro + ' ' + osInfo.release}`,
                    `**CPU:** ${cpu.manufacturer} ${cpu.brand}`,
                    `**Memory:** ${formatBytes(ram.used)}/${formatBytes(ram.total)}`,
                    `**NodeJS:** ${formatBytes(process.memoryUsage().heapUsed)}/${formatBytes(process.memoryUsage().heapTotal)}`,
                    `**Load Usage:**\nUser: ${currentLoad.currentLoadUser.toFixed(1)}%\nSystem: ${currentLoad.currentLoadSystem.toFixed(1)}%`,
                    `**Uptime:**\nHost: ${client.formatTime((os.uptime()*1000), 2, {longNames: true, commas: true})}\nBot: ${client.formatTime(client.uptime as number, 2, {commas: true, longNames: true})}`
                ].join('\n')} // Nice
            );
            interaction.reply({embeds: [embed], fetchReply: true}).then((x)=>x.edit({embeds: [new client.embed(x.embeds[0].data).setFooter({text: `Load time: ${client.formatTime(x.createdTimestamp - interaction.createdTimestamp, 2, {longNames: true, commas: true})}`})]}))    
    },
    data: new SlashCommandBuilder()
        .setName('statistics')
        .setDescription('See a list of commands ordered by their usage or host stats')
}