comcord/lib/messages.go

524 lines
15 KiB
Go

package lib
import (
"fmt"
"math"
"regexp"
"strconv"
"strings"
"time"
"unicode/utf8"
"github.com/Cynosphere/comcord/state"
"github.com/diamondburned/arikawa/v3/discord"
"github.com/mergestat/timediff"
"github.com/mgutz/ansi"
)
var REGEX_CODEBLOCK = regexp.MustCompile(`(?i)\x60\x60\x60(?:([a-z0-9_+\-\.]+?)\n)?\n*([^\n](?:.|\n)*?)\n*\x60\x60\x60`)
var REGEX_MENTION = regexp.MustCompile(`<@!?(\d+)>`)
var REGEX_ROLE_MENTION = regexp.MustCompile(`<@&(\d+)>`)
var REGEX_CHANNEL = regexp.MustCompile(`<#(\d+)>`)
var REGEX_EMOTE = regexp.MustCompile(`<(?:\x{200b}|&)?a?:(\w+):(\d+)>`)
var REGEX_COMMAND = regexp.MustCompile(`</([^\s]+?):(\d+)>`)
var REGEX_BLOCKQUOTE = regexp.MustCompile(`^ *>>?>? +`)
var REGEX_GREENTEXT = regexp.MustCompile(`^(>.+?)(?:\n|$)`)
var REGEX_SPOILER = regexp.MustCompile(`\|\|(.+?)\|\|`)
var REGEX_BOLD = regexp.MustCompile(`\*\*(.+?)\*\*`)
var REGEX_UNDERLINE = regexp.MustCompile(`__(.+?)__`)
var REGEX_ITALIC_1 = regexp.MustCompile(`\*(.+?)\*`)
var REGEX_ITALIC_2 = regexp.MustCompile(`_(.+?)_`)
var REGEX_STRIKE = regexp.MustCompile(`~~(.+?)~~`)
var REGEX_3Y3 = regexp.MustCompile(`[\x{e0020}-\x{e007e}]{1,}`)
var REGEX_TIMESTAMP = regexp.MustCompile(`<t:(-?\d{1,17})(?::(t|T|d|D|f|F|R))?>`)
type MessageOptions struct {
Content string
Name string
Channel discord.ChannelID
Bot bool
Webhook bool
Attachments []discord.Attachment
Stickers []discord.StickerItem
Reply *discord.Message
Timestamp time.Time
IsMention bool
IsDM bool
IsJoin bool
IsPin bool
IsDump bool
NoColor bool
InHistory bool
}
func Parse3y3(content string) string {
out := []rune{}
for i, w := 0, 0; i < len(content); i += w {
runeValue, width := utf8.DecodeRuneInString(content[i:])
w = width
out = append(out, rune(int(runeValue) - 0xe0000))
}
return string(out)
}
func ReplaceStyledMarkdown(content string) string {
content = REGEX_BLOCKQUOTE.ReplaceAllString(content, ansi.Color("\u258e", "black+h"))
content = REGEX_GREENTEXT.ReplaceAllStringFunc(content, func(match string) string {
return ansi.Color(match, "green")
})
if state.GetConfigValue("enable3y3") == "true" {
parsed := REGEX_3Y3.FindString(content)
parsed = Parse3y3(parsed)
parsed = "\033[3m" + parsed + "\033[23m"
content = REGEX_3Y3.ReplaceAllString(content, ansi.Color(parsed, "magenta"))
}
content = REGEX_SPOILER.ReplaceAllString(content, "\033[30m\033[40m$1\033[39m\033[49m")
content = REGEX_STRIKE.ReplaceAllString(content, "\033[9m$1\033[29m")
content = REGEX_BOLD.ReplaceAllString(content, "\033[1m$1\033[22m")
content = REGEX_UNDERLINE.ReplaceAllString(content, "\033[4m$1\033[24m")
content = REGEX_ITALIC_1.ReplaceAllString(content, "\033[3m$1\033[23m")
content = REGEX_ITALIC_2.ReplaceAllString(content, "\033[3m$1\033[23m")
return content
}
func replaceAllWithCallback(re regexp.Regexp, content string, callback func(matches []string) string) string {
return re.ReplaceAllStringFunc(content, func(match string) string {
matches := re.FindStringSubmatch(match)
return callback(matches)
})
}
func ReplaceMarkdown(content string, noColor bool) string {
client := state.GetClient()
content = replaceAllWithCallback(*REGEX_MENTION, content, func(matches []string) string {
id := matches[1]
parsedId, err := discord.ParseSnowflake(id)
if err != nil {
return "@Unknown User"
}
user, err := client.User(discord.UserID(parsedId))
if err != nil {
return "@Unknown User"
}
return "@" + user.Username
})
content = replaceAllWithCallback(*REGEX_ROLE_MENTION, content, func(matches []string) string {
id := matches[1]
parsedId, err := discord.ParseSnowflake(id)
if err != nil {
return "[@Unknown Role]"
}
currentGuild := state.GetCurrentGuild()
if currentGuild == "" {
return "[@Unknown Role]"
}
parsedGuildId, err := discord.ParseSnowflake(currentGuild)
if err != nil {
return "[@Unknown Role]"
}
role, err := client.RoleStore.Role(discord.GuildID(parsedGuildId), discord.RoleID(parsedId))
if err != nil {
return "[@Unknown Role]"
}
return fmt.Sprintf("[@%s]", role.Name)
})
content = replaceAllWithCallback(*REGEX_CHANNEL, content, func(matches []string) string {
id := matches[1]
parsedId, err := discord.ParseSnowflake(id)
if err != nil {
return "#Unknown"
}
channel, err := client.ChannelStore.Channel(discord.ChannelID(parsedId))
if err != nil {
return "#Unknown"
}
return "#" + channel.Name
})
content = REGEX_EMOTE.ReplaceAllString(content, ":$1:")
content = REGEX_COMMAND.ReplaceAllString(content, "/$1")
content = replaceAllWithCallback(*REGEX_TIMESTAMP, content, func (matches []string) string {
timestamp, err := strconv.Atoi(matches[1])
if err != nil {
return "Invalid Date"
}
timeObj := time.Unix(int64(timestamp), 0).UTC()
format := matches[2]
switch format {
case "t":
return timeObj.Format("15:04")
case "T":
return timeObj.Format("15:04:05")
case "d":
return timeObj.Format("2006/01/02")
case "D":
return timeObj.Format("2 January 2006")
case "f":
default:
return timeObj.Format("2 January 2006 15:04")
case "F":
return timeObj.Format("Monday, 2 January 2006 15:04")
case "R":
return timediff.TimeDiff(timeObj)
}
return "Invalid Date"
})
if !noColor {
content = ReplaceStyledMarkdown(content)
} else {
if state.GetConfigValue("enable3y3") == "true" {
parsed := REGEX_3Y3.FindString(content)
parsed = Parse3y3(parsed)
content = REGEX_3Y3.ReplaceAllString(content, "<3y3:" + parsed + ">")
}
}
return content
}
func FormatMessage(options MessageOptions) []string {
client := state.GetClient()
lines := make([]string, 0)
timestamp := options.Timestamp.UTC().Format("[15:04:05]")
nameLength := utf8.RuneCountInString(options.Name) + 2
stateNameLength := state.GetNameLength()
if nameLength > stateNameLength {
state.SetNameLength(nameLength)
stateNameLength = nameLength
}
if options.Reply != nil {
nameColor := "cyan+b"
if options.Bot {
nameColor = "yellow+b"
}
headerLength := 6 + utf8.RuneCountInString(options.Reply.Author.Username)
content := options.Reply.Content
replyContent := strings.ReplaceAll(content, "\n", " ")
replyContent = ReplaceMarkdown(replyContent, options.NoColor)
attachmentCount := len(options.Reply.Attachments)
if attachmentCount > 0 {
attachmentPlural := ""
if attachmentCount > 1 {
attachmentPlural = "s"
}
replyContent = strings.TrimSpace(replyContent + fmt.Sprintf(" <%d attachment%s>", attachmentCount, attachmentPlural))
}
stickerCount := len(options.Reply.Stickers)
if stickerCount > 0 {
stickerPlural := ""
if stickerCount > 0 {
stickerPlural = "s"
}
replyContent = strings.TrimSpace(replyContent + fmt.Sprintf(" <%d sticker%s>", stickerCount, stickerPlural))
}
length := headerLength + utf8.RuneCountInString(replyContent)
replySymbol := " \u00bb "
if !options.NoColor {
replySymbol = ansi.Color(replySymbol, "white+b")
}
name := fmt.Sprintf("[%s] ", options.Reply.Author.Username)
if !options.NoColor {
name = ansi.Color(name, nameColor)
}
moreContent := "\u2026"
if !options.NoColor {
moreContent = ansi.Color(moreContent, "reset")
}
if length > 79 {
replyContent = replyContent[:79 - headerLength] + moreContent
}
lines = append(lines, replySymbol, name, replyContent, "\n\r")
}
if options.IsDump {
if options.InHistory {
headerLength := 80 - (utf8.RuneCountInString(options.Name) + 5)
dumpHeader := fmt.Sprintf("--- %s %s\n\r", options.Name, strings.Repeat("-", headerLength))
contentLines := strings.Split(options.Content, "\n")
lines = append(lines, dumpHeader)
for _, line := range contentLines {
lines = append(lines, line + "\n\r")
}
lines = append(lines, dumpHeader)
} else {
wordCount := len(strings.Split(options.Content, " "))
lineCount := len(strings.Split(options.Content, "\n"))
wordsPlural := ""
linesPlural := ""
if wordCount > 1 {
wordsPlural = "s"
}
if lineCount > 1 {
linesPlural = "s"
}
str := fmt.Sprintf("<%s DUMPs in %d characters of %d word%s in %d line%s>", options.Name, len(options.Content), wordCount, wordsPlural, lineCount, linesPlural)
if !options.NoColor {
str = ansi.Color(str, "yellow+b")
}
lines = append(lines, str + "\n\r")
}
} else {
content := options.Content
content = ReplaceMarkdown(content, options.NoColor)
if options.IsDM {
name := fmt.Sprintf("*%s*", options.Name)
if !options.NoColor {
name = ansi.Color(name, "red+b")
}
lines = append(lines, fmt.Sprintf("%s %s\x07\n\r", name, content))
} else if utf8.RuneCountInString(content) > 1 &&
(strings.HasPrefix(content, "*") && strings.HasSuffix(content, "*") && !strings.HasPrefix(content, "**") && !strings.HasSuffix(content, "**")) ||
(strings.HasPrefix(content, "_") && strings.HasSuffix(content, "_") && !strings.HasPrefix(content, "__") && !strings.HasSuffix(content, "__")) {
str := fmt.Sprintf("<%s %s>", options.Name, content[1:len(content)-1])
if !options.NoColor {
str = ansi.Color(str, "green+b")
}
lines = append(lines, str + "\n\r")
} else if options.IsJoin {
channel, err := client.ChannelStore.Channel(options.Channel)
if err != nil {
return lines
}
guild, err := client.GuildStore.Guild(channel.GuildID)
if err != nil {
return lines
}
str := fmt.Sprintf("%s %s has joined %s", timestamp, options.Name, guild.Name)
if !options.NoColor {
str = ansi.Color(str, "yellow+b")
}
lines = append(lines, str + "\n\r")
} else if options.IsPin {
str := fmt.Sprintf("%s %s pinned a message to this channel", timestamp, options.Name)
if !options.NoColor {
str = ansi.Color(str, "yellow+b")
}
lines = append(lines, str + "\n\r")
} else {
nameColor := "cyan+b"
if options.IsMention {
nameColor = "red+b"
} else if options.Webhook {
nameColor = "magenta+b"
} else if options.Bot {
nameColor = "yellow+b"
}
name := fmt.Sprintf("[%s]", options.Name)
if !options.NoColor {
name = ansi.Color(name, nameColor)
}
padding := strings.Repeat(" ", int(math.Abs(float64(stateNameLength) - float64(nameLength))) + 1)
str := name + padding + content
if options.IsMention {
str = str + "\x07"
}
lines = append(lines, str + "\n\r")
}
}
if len(options.Attachments) > 0 {
for _, attachment := range options.Attachments {
str := fmt.Sprintf("<attachment: %s >", attachment.URL)
if !options.NoColor {
str = ansi.Color(str, "yellow+b")
}
lines = append(lines, str + "\n\r")
}
}
if len(options.Stickers) > 0 {
for _, sticker := range options.Stickers {
str := fmt.Sprintf("<sticker: \"%s\" https://cdn.discordapp.com/stickers/%s.png >", sticker.Name, sticker.ID)
if !options.NoColor {
str = ansi.Color(str, "yellow+b")
}
lines = append(lines, str + "\n\r")
}
}
// TODO: links
// TODO: embeds
// TODO: lines output for history
return lines
}
func ProcessMessage(msg discord.Message, options MessageOptions) []string {
client := state.GetClient()
lines := make([]string, 0)
channel, err := client.ChannelStore.Channel(msg.ChannelID)
if err != nil {
return lines
}
guild, err := client.GuildStore.Guild(channel.GuildID)
if err != nil {
return lines
}
self, err := client.MeStore.Me()
if err != nil {
return lines
}
selfMember, err := client.MemberStore.Member(guild.ID, self.ID)
if err != nil {
return lines
}
hasMentionedRole := false
for _, role := range msg.MentionRoleIDs {
for _, selfRole := range selfMember.RoleIDs {
if role == selfRole {
hasMentionedRole = true
break;
}
}
}
isDirectlyMentioned := false
for _, user := range msg.Mentions {
if user.ID == self.ID {
isDirectlyMentioned = true
break;
}
}
isPing := msg.MentionEveryone || hasMentionedRole || isDirectlyMentioned
isDM := channel.Type == discord.DirectMessage || channel.Type == discord.GroupDM
isEdit := msg.EditedTimestamp.IsValid()
currentChannel := state.GetCurrentChannel()
isCurrentChannel := currentChannel == msg.ChannelID.String()
if !isCurrentChannel && !isDM && !isPing && !options.InHistory {
return lines
}
if isPing && !isCurrentChannel && !isDM && !options.InHistory {
str := fmt.Sprintf("**mentioned by %s in #%s in %s**", msg.Author.Username, channel.Name, guild.Name)
if !options.NoColor {
str = ansi.Color(str, "red+b")
}
str = str + "\x07\n\r"
lines = append(lines, str)
} else {
content := msg.Content
if isEdit {
content = content + " (edited)"
}
isDump := REGEX_CODEBLOCK.MatchString(content)
if strings.Index(content, "\n") > -1 && !isDump {
for i, line := range strings.Split(content, "\n") {
options.Content = line
options.Name = msg.Author.Username
options.Channel = msg.ChannelID
options.Bot = msg.Author.Bot
options.Webhook = msg.WebhookID.IsValid()
options.Attachments = msg.Attachments
options.Stickers = msg.Stickers
if i == 0 {
options.Reply = msg.ReferencedMessage
}
options.IsMention = isPing
options.IsDM = isDM
options.IsJoin = msg.Type == discord.GuildMemberJoinMessage
options.IsPin = msg.Type == discord.ChannelPinnedMessage
options.IsDump = false
msgLines := FormatMessage(options)
for _, line := range msgLines {
lines = append(lines, line)
}
}
} else {
options.Content = content
options.Name = msg.Author.Username
options.Channel = msg.ChannelID
options.Bot = msg.Author.Bot
options.Webhook = msg.WebhookID.IsValid()
options.Attachments = msg.Attachments
options.Stickers = msg.Stickers
options.Reply = msg.ReferencedMessage
options.IsMention = isPing
options.IsDM = isDM
options.IsJoin = msg.Type == discord.GuildMemberJoinMessage
options.IsPin = msg.Type == discord.ChannelPinnedMessage
options.IsDump = isDump
lines = FormatMessage(options)
}
}
return lines
}
func ProcessQueue() {
queue := state.GetMessageQueue()
for _, msg := range queue {
lines := ProcessMessage(msg, MessageOptions{NoColor: state.HasNoColor()})
for _, line := range lines {
fmt.Print(line)
}
}
state.EmptyMessageQueue()
}