feat: Automatic comment translation using DeepL

botIO/authenticate.go

@@ -9,7 +9,7 @@ import (
 func Authenticate() (tgbotapi.UpdatesChannel, *tgbotapi.BotAPI) {
 	bot, err := tgbotapi.NewBotAPI(config.BotConfig.TelegramAPIToken)
 	if err != nil {
-		log.Panic().Err(err).Msg("Failed to authenticate to Telegram")
+		log.Fatal().Err(err).Msg("Failed to authenticate to Telegram")
 	}
 
 	bot.Debug = false

config/config.go

@@ -2,28 +2,31 @@ package config
 
 import (
 	"context"
+	"strings"
 
+	"github.com/joho/godotenv"
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
-	"github.com/joho/godotenv"
 	envconfig "github.com/sethvargo/go-envconfig"
 )
 
 var BotConfig config
 
 func LoadConfig() {
-
-  	if err := godotenv.Load(); err != nil {
+	if err := godotenv.Load(); err != nil {
 		log.Info().Err(err).Msg("Failed to load .env file, using the system environment")
 	} else {
 		log.Info().Err(err).Msg(".env file loaded successfully")
 	}
 
 	if err := envconfig.Process(context.Background(), &BotConfig); err != nil {
-		log.Panic().Err(err).Msg("Failed to parse config from env variables")
+		log.Fatal().Err(err).Msg("Failed to parse config from env variables")
 	}
 	zerolog.SetGlobalLevel(zerolog.Level(BotConfig.LogLevel))
 
+	BotConfig.TranslateLanguage = strings.ToUpper(BotConfig.TranslateLanguage)
+	
+
 	log.Info().Msg("Config loaded successfully")
 	log.Debug().Interface("config", BotConfig).Msg("")
 

config/types.go

@@ -1,10 +1,16 @@
 package config
 
 type config struct {
-	LogLevel         int      `env:"STEAMSALTY_LOGLEVEL, default=1"`
-	TelegramAPIToken string   `env:"STEAMSALTY_TELEGRAMAPITOKEN, required"`
-	SteamAPIKey      string   `env:"STEAMSALTY_STEAMAPIKEY, required"`
-	ChatID           int64    `env:"STEAMSALTY_CHATID, required"`
-	Watchers         []uint64 `env:"STEAMSALTY_WATCHERS, required"`
-	SleepInterval    int      `env:"STEAMSALTY_SLEEPINTERVAL, default=60"`
+	LogLevel int `env:"STEAMSALTY_LOGLEVEL" default:"1"`
+
+	SleepInterval     int      `env:"STEAMSALTY_SLEEPINTERVAL" default:"60"`
+	ChatID            int64    `env:"STEAMSALTY_CHATID" required:"true"`
+	Watchers          []uint64 `env:"STEAMSALTY_WATCHERS" required:"true"`
+	TranslateEnabled  bool     `env:"STEAMSALTY_TRANSLATE_ENABLED" default:"false"`
+	TranslateLanguage string   `env:"STEAMSALTY_TRANSLATE_LANGUAGE" default:"EN-US"`
+
+	TelegramAPIToken string `env:"STEAMSALTY_TELEGRAMAPITOKEN" required:"true"`
+	SteamAPIKey      string `env:"STEAMSALTY_STEAMAPIKEY" required:"true"`
+	DeepLAPIKey      string `env:"STEAMSALTY_DEEPLAPIKEY"`
+	DeepLFreeTier    bool   `env:"STEAMSALTY_DEEPLAPIFREETIER" default:"true"`
 }

deepL/http.go

@@ -0,0 +1,60 @@
+package deepl
+
+import (
+	"bytes"
+	"io"
+	"net/http"
+
+	"github.com/rs/zerolog/log"
+)
+
+func get(endpoint string) (responseBody []byte, err error) {
+	httpReq, _ := http.NewRequest("GET", client.baseURL+endpoint, nil)
+	httpReq.Header.Set("Authorization", "DeepL-Auth-Key "+client.authKey)
+
+	resp, err := client.httpClient.Do(httpReq)
+	if err != nil {
+		log.Error().Err(err).Str("endpoint", endpoint).Msg("Failed to send GET request to DeepL API")
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		log.Error().Str("response", resp.Status).Str("endpoint", endpoint).Msg("Failed to send GET request to DeepL API, non 200 HTTP response")
+		return nil, err
+	}
+
+	respBody, err := io.ReadAll(resp.Body)
+	if err != nil {
+		log.Error().Err(err).Str("endpoint", endpoint).Msg("Failed to read DeepL API response")
+		return nil, err
+	}
+
+	return respBody, nil
+}
+
+func post(endpoint string, data []byte) (responseBody []byte, err error) {
+	httpReq, _ := http.NewRequest("POST", client.baseURL+endpoint, bytes.NewReader(data))
+	httpReq.Header.Set("Authorization", "DeepL-Auth-Key "+client.authKey)
+	httpReq.Header.Set("Content-Type", "application/json")
+
+	resp, err := client.httpClient.Do(httpReq)
+	if err != nil {
+		log.Error().Err(err).Str("endpoint", endpoint).Msg("Failed to send request to POST DeepL API")
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		log.Error().Str("response", resp.Status).Str("endpoint", endpoint).Msg("Failed to send POST request to DeepL API, non 200 HTTP response")
+		return nil, err
+	}
+
+	respBody, err := io.ReadAll(resp.Body)
+	if err != nil {
+		log.Error().Err(err).Str("endpoint", endpoint).Msg("Failed to read DeepL API response")
+		return nil, err
+	}
+
+	return respBody, nil
+}

deepL/translate.go

@@ -0,0 +1,108 @@
+package deepl
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"time"
+	"watn3y/steamsalty/config"
+
+	"github.com/rs/zerolog/log"
+)
+
+var client *apiClient
+
+var SourceLanguages map[string]string
+var TargetLanguages map[string]string
+
+func Init() {
+	log.Info().Msg("Translation is enabled, creating HTTP client for DeepL API")
+	baseURL := baseURLPro
+	if config.BotConfig.DeepLFreeTier {
+		baseURL = baseURLFree
+	}
+
+	client = &apiClient{
+		authKey:    config.BotConfig.DeepLAPIKey,
+		baseURL:    baseURL,
+		httpClient: &http.Client{Timeout: 30 * time.Second},
+	}
+
+	err := getAndValidateLanguages()
+	if err != nil {
+		log.Fatal().Err(err).Msg("Failed to set up languages")
+	}
+}
+
+func Translate(text string) (translatedText string, sourceLanguage string, err error) {
+	log.Debug().Str("text", text).Msg("Starting translation")
+	req := translateRequest{
+		Text:       []string{text},
+		TargetLang: config.BotConfig.TranslateLanguage,
+	}
+
+	body, err := json.Marshal(req)
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to ")
+		return "", "", err
+	}
+
+	respBody, err := post("/translate", body)
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to make DeepL API request")
+		return "", "", err
+	}
+
+	var result translateResponse
+	err = json.Unmarshal(respBody, &result)
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to parse DeepL API response")
+		return "", "", err
+	}
+
+	return result.Translations[0].Text, result.Translations[0].DetectedSourceLanguage, nil
+}
+
+func getAndValidateLanguages() (err error) {
+	log.Info().Msg("Setting up supported languages")
+	respBody, err := get("/languages?type=source")
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to make DeepL API request")
+		return err
+	}
+
+	var parsedResp languagesResponse
+	err = json.Unmarshal(respBody, &parsedResp)
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to parse DeepL API response")
+		return err
+	}
+
+	SourceLanguages = make(map[string]string)
+	for _, l := range parsedResp {
+		SourceLanguages[l.Language] = l.Name
+	}
+
+	respBody, err = get("/languages?type=target")
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to make DeepL API request")
+		return err
+	}
+
+	err = json.Unmarshal(respBody, &parsedResp)
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to parse DeepL API response")
+		return err
+	}
+
+	TargetLanguages = make(map[string]string)
+	for _, l := range parsedResp {
+		TargetLanguages[l.Language] = l.Name
+	}
+
+	if _, ok := TargetLanguages[config.BotConfig.TranslateLanguage]; !ok {
+		return fmt.Errorf("Selected language not supported by DeepL")
+	}
+
+	return nil
+}

deepL/types.go

@@ -0,0 +1,35 @@
+package deepl
+
+import (
+	"net/http"
+)
+
+type translateResponse struct {
+	Translations []struct {
+		DetectedSourceLanguage string `json:"detected_source_language"`
+		Text                   string `json:"text"`
+	} `json:"translations"`
+}
+
+type translateRequest struct {
+	Text       []string `json:"text"`
+	TargetLang string   `json:"target_lang"`
+}
+
+type languagesResponse []struct {
+	Language string `json:"language"`
+	Name     string `json:"name"`
+	SupportsFormality bool   `json:"supports_formality"` //unused
+}
+
+
+type apiClient struct {
+	authKey    string
+	baseURL    string
+	httpClient *http.Client
+}
+
+const (
+	baseURLPro  = "https://api.deepl.com/v2"
+	baseURLFree = "https://api-free.deepl.com/v2"
+)

go.mod

@@ -6,13 +6,13 @@ require (
 	github.com/Philipp15b/go-steamapi v0.0.0-20210114153316-ec4fdd23b4c1
 	github.com/PuerkitoBio/goquery v1.10.3
 	github.com/go-telegram-bot-api/telegram-bot-api/v5 v5.5.1
+	github.com/joho/godotenv v1.5.1
 	github.com/rs/zerolog v1.34.0
 	github.com/sethvargo/go-envconfig v1.3.0
 )
 
 require (
 	github.com/andybalholm/cascadia v1.3.3 // indirect
-	github.com/joho/godotenv v1.5.1 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	golang.org/x/net v0.43.0 // indirect

main.go

@@ -8,16 +8,18 @@ import (
 
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
-	
+
 	"watn3y/steamsalty/config"
+	deepl "watn3y/steamsalty/deepL"
 )
 
 func main() {
 	println("Starting SteamSalty...")
-
 	configureLogger()
-
 	config.LoadConfig()
+	if config.BotConfig.TranslateEnabled {
+		deepl.Init()
+	}
 
 	bot()
 

steam/http.go

@@ -39,7 +39,6 @@ func GetComments(steamID uint64, start int, count int) (page CommentsPage) {
 	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		log.Error().Err(err).Msg("Failed to parse comments")
-		log.Trace().Interface("Body", resp.Body)
 	}
 
 	err = json.Unmarshal(body, &page)

steam/profile.go

@@ -3,19 +3,18 @@ package steam
 import (
 	"fmt"
 	"math"
-
 	"strings"
 	"sync"
 	"time"
-
 	"watn3y/steamsalty/botIO"
 	"watn3y/steamsalty/config"
+	deepl "watn3y/steamsalty/deepL"
 
 	tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api/v5"
 	"github.com/rs/zerolog/log"
 )
 
-var steamContentCheckText string = "This comment is awaiting analysis by our automated content check system. It will be temporarily hidden until we verify that it does not contain harmful content (e.g. links to websites that attempt to steal information)."
+const steamContentCheckText string = "This comment is awaiting analysis by our automated content check system. It will be temporarily hidden until we verify that it does not contain harmful content (e.g. links to websites that attempt to steal information)."
 
 func StartWatchers(bot *tgbotapi.BotAPI) {
 
@@ -69,9 +68,27 @@ func watcher(bot *tgbotapi.BotAPI, steamID uint64, sleeptime time.Duration) {
 				Text: fmt.Sprintf(`<b><a href="%s">%s</a> just commented on <a href="%s">%s</a>'s profile:</b>`, comment.AuthorProfileURL, comment.Author, profileOwner.ProfileURL, profileOwner.PersonaName) + "\n" +
 					"<blockquote>" + comment.Text + "</blockquote>",
 			}
+
+			if config.BotConfig.TranslateEnabled {
+				translatedText, translatedTextLanguage, err := deepl.Translate(comment.Text)
+				if translatedTextLanguage == config.BotConfig.TranslateLanguage {
+					continue
+				}
+				if err != nil {
+					log.Error().Err(err).Msg("Failed to translate comment, continuing without translation")
+					msg.Text += "\n" + "Translation failed"
+
+				} else {
+					msg.Text += "\n" +
+						fmt.Sprintf(`Translated from %s:`, deepl.SourceLanguages[translatedTextLanguage]) + "\n" +
+						"<blockquote>" + translatedText + "</blockquote>"
+				}
+
+			}
+
 			log.Info().Interface("Comment", comment).Msg("Notifying about new comment")
 			botIO.SendMessage(msg, bot)
-			time.Sleep(time.Minute / 20)
+			time.Sleep(time.Second * 3) //I have no Idea why this is here
 		}
 
 		newestProcessedComment = currentCommentsPage.TimeLastPost