package botEvents

import (
	"corn-util/bot/loaders"
	"corn-util/bot/toolbox"
	"encoding/json"
	"fmt"
	"runtime"
	"strings"
	"time"

	"github.com/disgoorg/disgo"
	"github.com/disgoorg/disgo/discord"
	"github.com/disgoorg/disgo/events"
	"github.com/disgoorg/log"
	"github.com/dustin/go-humanize"
	"github.com/mackerelio/go-osstat/cpu"
	"github.com/shirou/gopsutil/v3/mem"
	"github.com/zcalusic/sysinfo"
)

var (
	mainEmbedColor  = 0xff69b4 //0xf9c62c - main embed color for the bot (saffron / yellow)
	noPermText      = "You need to have a role with `Manage Server` permission to use this command."
	attemptFailText = "There was an attempt..."
	noConfigValText = "Unconfigured"
)

func ListenForCommand(e *events.ApplicationCommandInteractionCreate) {
	TRUE := true
	switch name := e.Data.CommandName(); name {
	case "host-stats":
		before, err := cpu.Get()
		if err != nil {
			DumpErrToConsole(err)
			return
		}
		time.Sleep(time.Duration(1) * time.Second)
		after, err := cpu.Get()
		if err != nil {
			DumpErrToConsole(err)
			return
		}
		total := float64(after.Total - before.Total)

		memInfo, _ := mem.VirtualMemory()
		var si sysinfo.SysInfo
		si.GetSysInfo()
		if err := e.CreateMessage(discord.MessageCreate{
			Embeds: []discord.Embed{
				{
					Description: fmt.Sprintf("**OS:** %s\n**CPU:** %s", si.OS.Name, si.CPU.Model),
					Fields: []discord.EmbedField{
						{
							Name:   "CPU Usage",
							Value:  fmt.Sprintf("User: %.1f %%\nSys: %.1f %%", float64(after.User-before.User)/total*100, float64(after.System-before.System)/total*100),
							Inline: &TRUE,
						},
						{
							Name:   "Memory",
							Value:  fmt.Sprintf("Used: %v\nTotal: %v", humanize.IBytes(memInfo.Used), humanize.IBytes(memInfo.Total)),
							Inline: &TRUE,
						},
						{
							Name:   "\u200b",
							Value:  "\u200b",
							Inline: &TRUE,
						},
						{
							Name:   "Version",
							Value:  fmt.Sprintf("Disgo %v\nGo %v", disgo.Version, strings.TrimPrefix(runtime.Version(), "go")),
							Inline: &TRUE,
						},
						{
							Name:   "Goroutines",
							Value:  fmt.Sprintf("%v", runtime.NumGoroutine()),
							Inline: &TRUE,
						},
					},
					Footer: &discord.EmbedFooter{
						Text: fmt.Sprintf("Uptime: %v", toolbox.GetUptime()),
					},
					Color: mainEmbedColor,
				},
			},
		}); err != nil {
			DumpErrToConsole(err)
		}
		break
	case "repository":
		e.CreateMessage(discord.MessageCreate{
			Components: []discord.ContainerComponent{
				discord.ActionRowComponent{
					discord.ButtonComponent{
						Label: "Check out the repository!",
						Style: discord.ButtonStyleLink,
						URL:   "https://git.toast-server.net/toast/Corn-Utility.git",
					},
				},
			},
		})
		break
	case "config":
		type jsonDataStruct struct {
			BanRecords          string `json:"banRecords"`
			GoogleSpreadsheetID string `json:"googleSpreadsheetId"`
		}
		readData, _ := loaders.DataLoader.Read(&loaders.JSON{}, "config.json")
		jsonData := jsonDataStruct{}
		jsonDataBytes, _ := json.Marshal(readData)
		json.Unmarshal(jsonDataBytes, &jsonData)

		banRecordsCh, _ := e.SlashCommandInteractionData().OptChannel("ban-records")
		googleSpreadsheet_Id, _ := e.SlashCommandInteractionData().OptString("google-spreadsheet-id")

		if !isGuildManager(e) {
			DumpErrToInteraction(e, fmt.Errorf(noPermText))
			return
		}
		if len(e.SlashCommandInteractionData().Options) == 0 {
			e.CreateMessage(discord.MessageCreate{
				Embeds: []discord.Embed{
					{
						Title:       "Current configuration",
						Description: "You can configure the bot using the options below.",
						Fields: []discord.EmbedField{
							{
								Name: "Ban Records",
								Value: func() string {
									if jsonData.BanRecords == "" || jsonData.BanRecords == "0" {
										return noConfigValText
									} else {
										return fmt.Sprintf("<#%v>", jsonData.BanRecords)
									}
								}(),
								Inline: &TRUE,
							},
							{
								Name: "Google Spreadsheet ID",
								Value: func() string {
									if jsonData.GoogleSpreadsheetID == "" {
										return noConfigValText
									} else {
										return fmt.Sprintf("`%v`", jsonData.GoogleSpreadsheetID)
									}
								}(),
								Inline: &TRUE,
							},
						},
						Color: mainEmbedColor,
					},
				},
			})
			return
		}

		if banRecordsCh.Permissions.Has(discord.PermissionSendMessages, discord.PermissionEmbedLinks) {
			// Create a placeholder embed in the configured channel.
			if _, err := e.Client().Rest().CreateMessage(banRecordsCh.ID, discord.MessageCreate{
				Embeds: []discord.Embed{
					{
						Description: "Ban records on Google Sheets will now be sent in this channel.",
						Color:       mainEmbedColor,
					},
				},
			}); err != nil {
				DumpErrToChannel(e, err)
				return
			}
		}

		if err := e.CreateMessage(discord.MessageCreate{
			Embeds: []discord.Embed{{Title: "Config saved!", Color: mainEmbedColor}},
		}); err != nil {
			DumpErrToInteraction(e, err)
			return
		}

		// Update the config file with the new configuration.
		data := map[string]interface{}{}

		if banRecordsCh.ID.String() != "0" {
			data["banRecords"] = banRecordsCh.ID
		} else {
			data["banRecords"] = jsonData.BanRecords
		}

		if googleSpreadsheet_Id != "" {
			if strings.Contains(googleSpreadsheet_Id, "docs.google.com/spreadsheets/d/") {
				googleSpreadsheet_Id = strings.Split(googleSpreadsheet_Id, "/")[5]
				log.Warnf("detected the url: \"%v\", splitting...", googleSpreadsheet_Id)
			} else {
				googleSpreadsheet_Id = strings.Split(googleSpreadsheet_Id, "/")[0]
			}
			data["googleSpreadsheetId"] = googleSpreadsheet_Id
		} else {
			data["googleSpreadsheetId"] = jsonData.GoogleSpreadsheetID
		}

		err := loaders.DataLoader.Write(&loaders.JSON{}, "config.json", data)
		if err != nil {
			DumpErrToChannel(e, err)
			return
		}
	}
}

func DumpErrToConsole(err error) {
	log.Errorf("failed to send interaction response: %v", err.Error())
}

func DumpErrToInteraction(e *events.ApplicationCommandInteractionCreate, err error) {
	if err := e.CreateMessage(discord.MessageCreate{
		Embeds: []discord.Embed{
			{
				Title:       attemptFailText,
				Description: fmt.Sprintf("```%v```", err.Error()),
				Color:       0x560000,
			},
		},
	}); err != nil {
		DumpErrToConsole(err)
	}
}

func DumpErrToChannel(e *events.ApplicationCommandInteractionCreate, err error) {
	if _, err := e.Client().Rest().CreateMessage(e.Channel().ID(), discord.MessageCreate{
		Embeds: []discord.Embed{
			{
				Title:       attemptFailText,
				Description: fmt.Sprintf("```%v```", err.Error()),
				Color:       0x560000,
			},
		},
	}); err != nil {
		DumpErrToConsole(err)
	}
}

func isGuildManager(e *events.ApplicationCommandInteractionCreate) bool {
	if e.Member().Permissions.Has(discord.PermissionManageGuild) {
		return true
	} else {
		return false
	}
}