Sfoglia il codice sorgente

Implement basic functionality

rigormorrtiss 4 anni fa
parent
commit
4fac6484f4
15 ha cambiato i file con 537 aggiunte e 7 eliminazioni
  1. 31 1
      README.md
  2. BIN
      assets/preview.png
  3. 230 2
      discordo.go
  4. 4 2
      go.mod
  5. 19 2
      go.sum
  6. 14 0
      ui/app.go
  7. 22 0
      ui/dropdowns.go
  8. 21 0
      ui/flex.go
  9. 30 0
      ui/forms.go
  10. 24 0
      ui/inputfields.go
  11. 21 0
      ui/lists.go
  12. 18 0
      ui/modals.go
  13. 24 0
      ui/textviews.go
  14. 57 0
      util/discord.go
  15. 22 0
      util/keyring.go

+ 31 - 1
README.md

@@ -1,2 +1,32 @@
 # discordo
-Discord Terminal Client
+
+Lightweight Discord terminal client
+
+![preview](assets/preview.png)
+
+## Features
+
+- **Lightweight**: Designed to have a low memory footprint and low CPU usage, overall a low usage of system resources.
+- **Secure**: Securely stores credentials (email, password, or authentication token) in OS-specific keyring file.
+
+## Installation
+
+- For Linux, run the following commands in chronological order.
+
+```
+git clone https://github.com/rigormorrtiss/discordo
+cd discordo
+mv build/discordo-os-arch /usr/local/bin
+```
+
+## Usage
+
+- Run the executable by running the following command in a terminal.
+
+```
+discordo
+```
+
+- Choose the preferred login method.
+- Log in using the chosen login method and click on "Login" button to continue.
+Note: bot accounts must be prefixed with "Bot ".

BIN
assets/preview.png


+ 230 - 2
discordo.go

@@ -1,7 +1,235 @@
 package main
 
-import "fmt"
+import (
+	"strings"
+
+	"github.com/diamondburned/arikawa/v2/api"
+	"github.com/diamondburned/arikawa/v2/discord"
+	"github.com/diamondburned/arikawa/v2/gateway"
+	"github.com/diamondburned/arikawa/v2/session"
+	"github.com/gdamore/tcell/v2"
+	"github.com/rigormorrtiss/discordo/ui"
+	"github.com/rigormorrtiss/discordo/util"
+	"github.com/rivo/tview"
+)
+
+var app *tview.Application
+var loginModal *tview.Modal
+var loginForm *tview.Form
+var guildsDropDown *tview.DropDown
+var channelsList *tview.List
+var messagesTextView *tview.TextView
+var messageInputField *tview.InputField
+var mainFlex *tview.Flex
+var loginVia string
+var discordSession *session.Session
+var guilds []gateway.GuildCreateEvent
+var currentGuild gateway.GuildCreateEvent
+var currentChannel discord.Channel
 
 func main() {
-	fmt.Println("Discordo")
+	loginModal = ui.NewLoginModal(onLoginModalDone)
+	guildsDropDown = ui.NewGuildsDropDown(onGuildsDropDownSelected)
+	channelsList = ui.NewChannelsList(onChannelsListSelected)
+	messagesTextView = ui.NewMessagesTextView(onMessagesTextViewChanged)
+	mainFlex = ui.NewMainFlex(guildsDropDown, channelsList, messagesTextView)
+	app = ui.NewApplication(onApplicationInputCapture)
+
+	email := util.GetPassword("email")
+	password := util.GetPassword("password")
+	token := util.GetPassword("token")
+	if email != "" && password != "" {
+		app.
+			SetRoot(mainFlex, true).
+			SetFocus(guildsDropDown)
+
+		discordSession = newSession(email, password, "")
+	} else if token != "" {
+		app.
+			SetRoot(mainFlex, true).
+			SetFocus(guildsDropDown)
+
+		discordSession = newSession("", "", token)
+	} else {
+		app.SetRoot(loginModal, true)
+	}
+
+	if err := app.Run(); err != nil {
+		panic(err)
+	}
+}
+
+func onLoginFormQuitButtonSelected() {
+	app.Stop()
+}
+
+func onApplicationInputCapture(event *tcell.EventKey) *tcell.EventKey {
+	if event.Key() == tcell.KeyCtrlR {
+		app.Sync()
+	}
+
+	return event
+}
+
+func onMessagesTextViewChanged() {
+	app.Draw()
+}
+
+func onLoginModalDone(buttonIndex int, buttonLabel string) {
+	if buttonLabel == ui.LoginViaEmailPasswordLoginModalButton {
+		loginVia = "emailpassword"
+		loginForm = ui.NewLoginForm(loginVia, onLoginFormLoginButtonSelected, onLoginFormQuitButtonSelected)
+		app.SetRoot(loginForm, true)
+	} else if buttonLabel == ui.LoginViaTokenLoginModalButton {
+		loginVia = "token"
+		loginForm = ui.NewLoginForm(loginVia, onLoginFormLoginButtonSelected, onLoginFormQuitButtonSelected)
+		app.SetRoot(loginForm, true)
+	}
+}
+
+func newSession(email string, password string, token string) *session.Session {
+	var sess *session.Session
+	var err error
+	if email != "" && password != "" {
+		api.UserAgent = `Mozilla/5.0 (X11; Linux x86_64; rv:90.0)` +
+			`Gecko/20100101 Firefox/90.0`
+		gateway.DefaultIdentity = gateway.IdentifyProperties{
+			OS:      "Linux",
+			Browser: "Firefox",
+			Device:  "",
+		}
+
+		sess, err = session.Login(email, password, "")
+		if err != nil {
+			panic(err)
+		}
+
+		sess.AddHandler(onReady)
+	} else if token != "" {
+		sess, err = session.New(token)
+		if err != nil {
+			panic(err)
+		}
+
+		sess.AddHandler(onGuildCreate)
+		sess.Gateway.AddIntents(gateway.IntentGuilds)
+		sess.Gateway.AddIntents(gateway.IntentGuildMessages)
+	}
+
+	sess.AddHandler(onMessageCreate)
+	if err = sess.Open(); err != nil {
+		panic(err)
+	}
+
+	return sess
+}
+
+func onGuildCreate(guild *gateway.GuildCreateEvent) {
+	guildsDropDown.AddOption(guild.Name, nil)
+	guilds = append(guilds, *guild)
+}
+
+func onReady(ready *gateway.ReadyEvent) {
+	guilds = ready.Guilds
+	for i := 0; i < len(guilds); i++ {
+		guildsDropDown.AddOption(guilds[i].Name, nil)
+	}
+}
+
+func onMessageCreate(message *gateway.MessageCreateEvent) {
+	if currentChannel.ID == message.ChannelID {
+		util.WriteMessage(messagesTextView, message.Message)
+	}
+}
+
+func onGuildsDropDownSelected(text string, _ int) {
+	// Remove/clear all items from the channels List
+	channelsList.Clear()
+	// Remove/clear all text from the messages TextView buffer
+	messagesTextView.Clear()
+	// If the message InputField is not nil, remove the message InputField from the main Flex and set the message InputField to nil
+	if messageInputField != nil {
+		mainFlex.RemoveItem(messageInputField)
+		messageInputField = nil
+	}
+
+	for i := 0; i < len(guilds); i++ {
+		guild := guilds[i]
+		if guild.Name == text {
+			currentGuild = guild
+			break
+		}
+	}
+
+	for i := 0; i < len(currentGuild.Channels); i++ {
+		channel := currentGuild.Channels[i]
+		channelsList.AddItem(channel.Name, "", 0, nil)
+	}
+
+	app.SetFocus(channelsList)
+}
+
+func onChannelsListSelected(i int, mainText string, secondaryText string, _ rune) {
+	// Remove/clear all text from the messages TextView buffer
+	messagesTextView.Clear()
+	// If the message InputField is nil, add a new message InputField to the main Flex and assign it to message InputField in instance
+	if messageInputField == nil {
+		messageInputField = ui.NewMessageInputField(onMessageInputFieldDone)
+		// Add the message InputField as a new item to the main Flex
+		mainFlex.AddItem(messageInputField, 3, 1, false)
+	}
+
+	app.SetFocus(messageInputField)
+
+	currentChannel = currentGuild.Channels[i]
+	// Set the title of the messages TextView Box to the name of the channel
+	messagesTextView.SetTitle(currentChannel.Name)
+
+	messages := util.GetMessages(discordSession, currentChannel.ID, 50)
+	for i := len(messages) - 1; i >= 0; i-- {
+		util.WriteMessage(messagesTextView, messages[i])
+	}
+}
+
+func onMessageInputFieldDone(key tcell.Key) {
+	if key == tcell.KeyEnter {
+		currentText := messageInputField.GetText()
+		currentText = strings.TrimSpace(currentText)
+		// If the current text of the message InputField is an empty string and the enter key is pressed, do not proceed
+		if currentText == "" {
+			return
+		}
+
+		util.SendMessage(discordSession, currentChannel.ID, currentText)
+		// Set the current text of the message InputField to an empty string after the message has been sent
+		messageInputField.SetText("")
+	}
+}
+
+func onLoginFormLoginButtonSelected() {
+	if loginVia == "emailpassword" {
+		email := loginForm.GetFormItemByLabel("Email").(*tview.InputField).GetText()
+		password := loginForm.GetFormItemByLabel("Password").(*tview.InputField).GetText()
+		if email == "" || password == "" {
+			return
+		}
+
+		discordSession = newSession(email, password, "")
+
+		util.SetPassword("email", email)
+		util.SetPassword("password", password)
+	} else if loginVia == "token" {
+		token := loginForm.GetFormItemByLabel("Token").(*tview.InputField).GetText()
+		if token == "" {
+			return
+		}
+
+		discordSession = newSession("", "", token)
+
+		util.SetPassword("token", token)
+	}
+
+	app.
+		SetRoot(mainFlex, true).
+		SetFocus(guildsDropDown)
 }

+ 4 - 2
go.mod

@@ -3,6 +3,8 @@ module github.com/rigormorrtiss/discordo
 go 1.16
 
 require (
-	github.com/diamondburned/arikawa/v2 v2.1.0 // indirect
-	github.com/rivo/tview v0.0.0-20210624165335-29d673af0ce2 // indirect
+	github.com/diamondburned/arikawa/v2 v2.1.0
+	github.com/gdamore/tcell/v2 v2.3.11
+	github.com/rivo/tview v0.0.0-20210624165335-29d673af0ce2
+	github.com/zalando/go-keyring v0.1.1
 )

+ 19 - 2
go.sum

@@ -1,9 +1,16 @@
+github.com/danieljoos/wincred v1.1.0 h1:3RNcEpBg4IhIChZdFRSdlQt1QjCp1sMAPIrOnm7Yf8g=
+github.com/danieljoos/wincred v1.1.0/go.mod h1:XYlo+eRTsVA9aHGp7NGjFkPla4m+DCL7hqDjlFjiygg=
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/diamondburned/arikawa/v2 v2.1.0 h1:nyX5TEf7kuSdCTiZDMlURbabKrLTqPQGDBqnwX+qF9E=
 github.com/diamondburned/arikawa/v2 v2.1.0/go.mod h1:e+lhS20ni2luFEU06Pc8paCxgZL99/RZb77dOC82CF0=
 github.com/gdamore/encoding v1.0.0 h1:+7OoQ1Bc6eTm5niUzBa0Ctsh6JbMW6Ra+YNuAtDBdko=
 github.com/gdamore/encoding v1.0.0/go.mod h1:alR0ol34c49FCSBLjhosxzcPHQbf2trDkoo5dl+VrEg=
-github.com/gdamore/tcell/v2 v2.3.3 h1:RKoI6OcqYrr/Do8yHZklecdGzDTJH9ACKdfECbRdw3M=
 github.com/gdamore/tcell/v2 v2.3.3/go.mod h1:cTTuF84Dlj/RqmaCIV5p4w8uG1zWdk0SF6oBpwHp4fU=
+github.com/gdamore/tcell/v2 v2.3.11 h1:ECO6WqHGbKZ3HrSL7bG/zArMCmLaNr5vcjjMVnLHpzc=
+github.com/gdamore/tcell/v2 v2.3.11/go.mod h1:cTTuF84Dlj/RqmaCIV5p4w8uG1zWdk0SF6oBpwHp4fU=
+github.com/godbus/dbus/v5 v5.0.3 h1:ZqHaoEF7TBzh4jzPmqVhE/5A1z9of6orkAe5uHoAeME=
+github.com/godbus/dbus/v5 v5.0.3/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
 github.com/gorilla/schema v1.2.0 h1:YufUaxZYCKGFuAq3c96BOhjgd5nmXiOY9NGzF247Tsc=
 github.com/gorilla/schema v1.2.0/go.mod h1:kgLaKoK1FELgZqMAVxx/5cbj0kT+57qxUrAlIO2eleU=
 github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
@@ -15,13 +22,20 @@ github.com/mattn/go-runewidth v0.0.10 h1:CoZ3S2P7pvtP45xOtBw+/mDL2z0RKI576gSkzRR
 github.com/mattn/go-runewidth v0.0.10/go.mod h1:RAqKPSqVFrSLVXbA8x7dzmKdmGzieGRCM46jaSJTDAk=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/rivo/tview v0.0.0-20210624165335-29d673af0ce2 h1:I5N0WNMgPSq5NKUFspB4jMJ6n2P0ipz5FlOlB4BXviQ=
 github.com/rivo/tview v0.0.0-20210624165335-29d673af0ce2/go.mod h1:IxQujbYMAh4trWr0Dwa8jfciForjVmxyHpskZX6aydQ=
 github.com/rivo/uniseg v0.1.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
 github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY=
 github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
+github.com/stretchr/objx v0.1.0 h1:4G4v2dO3VZwixGIRoQ5Lfboy6nUhCyYzaqnIAPPhYs4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
+github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
+github.com/zalando/go-keyring v0.1.1 h1:w2V9lcx/Uj4l+dzAf1m9s+DJ1O8ROkEHnynonHjTcYE=
+github.com/zalando/go-keyring v0.1.1/go.mod h1:OIC+OZ28XbmwFxU/Rp9V7eKzZjamBJwRzC8UFJH9+L8=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20201016220609-9e8e0b390897 h1:pLI5jrR7OSLijeIDcmRxNmw2api+jEfxLoykJVice/E=
 golang.org/x/crypto v0.0.0-20201016220609-9e8e0b390897/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -39,3 +53,6 @@ golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/time v0.0.0-20200630173020-3af7569d3a1e h1:EHBhcS0mlXEAVwNyO2dLfjToGsyY4j24pTs2ScHnX7s=
 golang.org/x/time v0.0.0-20200630173020-3af7569d3a1e/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

+ 14 - 0
ui/app.go

@@ -0,0 +1,14 @@
+package ui
+
+import (
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+)
+
+func NewApplication(onApplicationInputCapture func(event *tcell.EventKey) *tcell.EventKey) *tview.Application {
+	app := tview.NewApplication().
+		EnableMouse(true).
+		SetInputCapture(onApplicationInputCapture)
+
+	return app
+}

+ 22 - 0
ui/dropdowns.go

@@ -0,0 +1,22 @@
+package ui
+
+import (
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+)
+
+var guildsDropDownBackgroundColor = tcell.GetColor("#1C1E26")
+
+func NewGuildsDropDown(onGuildsDropDownSelected func(text string, index int)) *tview.DropDown {
+	guildsDropDown := tview.NewDropDown().
+		SetLabel("Guild: ").
+		SetSelectedFunc(onGuildsDropDownSelected)
+	guildsDropDown.
+		SetFieldBackgroundColor(guildsDropDownBackgroundColor).
+		SetBackgroundColor(guildsDropDownBackgroundColor).
+		SetBorder(true).
+		SetBorderPadding(0, 0, 1, 1).
+		SetTitle("Guilds")
+
+	return guildsDropDown
+}

+ 21 - 0
ui/flex.go

@@ -0,0 +1,21 @@
+package ui
+
+import (
+	"github.com/rivo/tview"
+)
+
+func NewMainFlex(guildsDropDown *tview.DropDown, channelsList *tview.List, messagesTextView *tview.TextView) *tview.Flex {
+	mainFlex := tview.NewFlex().
+		SetDirection(tview.FlexRow).
+		AddItem(guildsDropDown, 3, 1, false).
+		AddItem(
+			tview.NewFlex().
+				AddItem(channelsList, 20, 1, false).
+				AddItem(messagesTextView, 0, 3, false),
+			0,
+			1,
+			false,
+		)
+
+	return mainFlex
+}

+ 30 - 0
ui/forms.go

@@ -0,0 +1,30 @@
+package ui
+
+import (
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+)
+
+var loginFormBackgroundColor = tcell.GetColor("#1C1E26")
+var loginFormButtonBackgroundColor = tcell.GetColor("#5865F2")
+
+func NewLoginForm(via string, onLoginFormLoginButtonSelected func(), onLoginFormQuitButtonSelected func()) *tview.Form {
+	loginForm := tview.NewForm().
+		AddButton("Login", onLoginFormLoginButtonSelected).
+		AddButton("Quit", onLoginFormQuitButtonSelected)
+	loginForm.
+		SetButtonBackgroundColor(loginFormButtonBackgroundColor).
+		SetBackgroundColor(loginFormBackgroundColor).
+		SetBorder(true).
+		SetBorderPadding(15, 15, 15, 15)
+
+	if via == "token" {
+		loginForm.AddPasswordField("Token", "", 0, 0, nil)
+	} else if via == "emailpassword" {
+		loginForm.
+			AddInputField("Email", "", 0, nil, nil).
+			AddPasswordField("Password", "", 0, 0, nil)
+	}
+
+	return loginForm
+}

+ 24 - 0
ui/inputfields.go

@@ -0,0 +1,24 @@
+package ui
+
+import (
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+)
+
+var messageInputFieldBackgroundColor = tcell.GetColor("#1C1E26")
+var messageInputFieldPlaceholderTextColor = tcell.ColorWhite
+
+func NewMessageInputField(onMessageInputFieldDone func(key tcell.Key)) *tview.InputField {
+	messageInputField := tview.NewInputField().
+		SetPlaceholder("Message...").
+		SetFieldWidth(0).
+		SetDoneFunc(onMessageInputFieldDone)
+	messageInputField.
+		SetFieldBackgroundColor(messageInputFieldBackgroundColor).
+		SetPlaceholderTextColor(messageInputFieldPlaceholderTextColor).
+		SetBackgroundColor(messageInputFieldBackgroundColor).
+		SetBorder(true).
+		SetBorderPadding(0, 0, 1, 1)
+
+	return messageInputField
+}

+ 21 - 0
ui/lists.go

@@ -0,0 +1,21 @@
+package ui
+
+import (
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+)
+
+var channelsListBackgroundColor = tcell.GetColor("#1C1E26")
+
+func NewChannelsList(onChannelsListSelected func(i int, mainText string, secondaryText string, _ rune)) *tview.List {
+	channelsList := tview.NewList().
+		ShowSecondaryText(false).
+		SetSelectedFunc(onChannelsListSelected)
+	channelsList.
+		SetBorder(true).
+		SetBorderPadding(0, 0, 1, 1).
+		SetTitle("Channels").
+		SetBackgroundColor(channelsListBackgroundColor)
+
+	return channelsList
+}

+ 18 - 0
ui/modals.go

@@ -0,0 +1,18 @@
+package ui
+
+import "github.com/rivo/tview"
+
+var LoginViaTokenLoginModalButton = "Login via token"
+var LoginViaEmailPasswordLoginModalButton = "Login via email and password"
+
+func NewLoginModal(onLoginModalDone func(buttonIndex int, buttonLabel string)) *tview.Modal {
+	loginModal := tview.NewModal().
+		SetText("Choose a login method:").
+		AddButtons([]string{LoginViaTokenLoginModalButton, LoginViaEmailPasswordLoginModalButton}).
+		SetDoneFunc(onLoginModalDone)
+	loginModal.
+		SetBorder(true).
+		SetBorderPadding(0, 0, 1, 1)
+
+	return loginModal
+}

+ 24 - 0
ui/textviews.go

@@ -0,0 +1,24 @@
+package ui
+
+import (
+	"github.com/gdamore/tcell/v2"
+	"github.com/rivo/tview"
+)
+
+var messagesTextViewBackgroundColor = tcell.GetColor("#1C1E26")
+
+func NewMessagesTextView(onMessagesTextViewChanged func()) *tview.TextView {
+	messagesTextView := tview.NewTextView().
+		SetDynamicColors(true).
+		SetWrap(true).
+		SetWordWrap(true).
+		SetScrollable(true).
+		ScrollToEnd().
+		SetChangedFunc(onMessagesTextViewChanged)
+	messagesTextView.
+		SetBorder(true).
+		SetBorderPadding(0, 0, 1, 1).
+		SetBackgroundColor(messagesTextViewBackgroundColor)
+
+	return messagesTextView
+}

+ 57 - 0
util/discord.go

@@ -0,0 +1,57 @@
+package util
+
+import (
+	"fmt"
+	_ "image/jpeg"
+	_ "image/png"
+	"strings"
+
+	"github.com/diamondburned/arikawa/v2/discord"
+	"github.com/diamondburned/arikawa/v2/session"
+	"github.com/rivo/tview"
+)
+
+func WriteMessage(messagesTextView *tview.TextView, message discord.Message) {
+	var content strings.Builder
+
+	content.WriteString("[red::b]" + message.Author.Username + "[-:-:-] ")
+	// If the author of the message is a bot account, add "BOT" beside the username of the author.
+	if message.Author.Bot {
+		content.WriteString("[blue]BOT[-:-:-] ")
+	}
+
+	if message.Content != "" {
+		content.WriteString(message.Content)
+	}
+
+	// TODO(rigormorrtiss): display the message embed using "special" format
+	if len(message.Embeds) > 0 {
+		content.WriteString("\n<EMBED>")
+	}
+
+	attachments := message.Attachments
+	attachmentsLen := len(attachments)
+	if attachmentsLen > 0 {
+		for i := 0; i < attachmentsLen; i++ {
+			content.WriteString("\n" + attachments[i].URL)
+		}
+	}
+
+	fmt.Fprintln(messagesTextView, content.String())
+}
+
+func SendMessage(session *session.Session, channelID discord.ChannelID, content string) {
+	_, err := session.SendText(channelID, content)
+	if err != nil {
+		panic(err)
+	}
+}
+
+func GetMessages(session *session.Session, channelID discord.ChannelID, limit uint) []discord.Message {
+	messages, err := session.Messages(channelID, limit)
+	if err != nil {
+		panic(err)
+	}
+
+	return messages
+}

+ 22 - 0
util/keyring.go

@@ -0,0 +1,22 @@
+package util
+
+import (
+	"github.com/zalando/go-keyring"
+)
+
+const Service string = "discordo"
+
+func GetPassword(user string) string {
+	password, err := keyring.Get(Service, user)
+	if err == keyring.ErrNotFound {
+		return ""
+	}
+
+	return password
+}
+
+func SetPassword(user string, password string) {
+	if err := keyring.Set(Service, user, password); err != nil {
+		panic(err)
+	}
+}