add tweet command

cmd/bot/command.go

@@ -58,5 +58,12 @@ func handleCommand(message twitch.PrivateMessage, tc *twitch.Client) {
 			commands.Echo(target, message.Message[7:len(message.Message)], tc)
 			return
 		}
+	case "tweet":
+		if msgLen < 2 {
+			common.Send(target, "Not enough arguments provided. Usage: ()tweet <username>", tc)
+			return
+		} else {
+			commands.Tweet(target, cmdParams[1], tc)
+		}
 	}
 }

pkg/commands/tweet.go

@@ -0,0 +1,20 @@
+package commands
+
+import (
+	"github.com/gempir/go-twitch-irc/v3"
+	"github.com/lyx0/nourybot/pkg/common"
+	"github.com/lyx0/nourybot/pkg/decapi"
+	"go.uber.org/zap"
+)
+
+func Tweet(target, username string, tc *twitch.Client) {
+	sugar := zap.NewExample().Sugar()
+	defer sugar.Sync()
+
+	resp, err := decapi.Tweet(username)
+	if err != nil {
+		sugar.Error(err)
+	}
+
+	common.Send(target, resp, tc)
+}

pkg/decapi/tweet.go

@@ -0,0 +1,43 @@
+package decapi
+
+import (
+	"fmt"
+	"io/ioutil"
+	"net/http"
+
+	"go.uber.org/zap"
+)
+
+var (
+	basePath                 = "https://decapi.me/twitter/latest/"
+	twitterUserNotFoundError = "[Error] - [34] Sorry, that page does not exist."
+)
+
+func Tweet(username string) (string, error) {
+	sugar := zap.NewExample().Sugar()
+	defer sugar.Sync()
+
+	// https://decapi.me/twitter/latest/forsen?url&no_rts
+	// ?url adds the url at the end and &no_rts ignores retweets.
+	resp, err := http.Get(fmt.Sprint(basePath + username + "?url" + "&no_rts"))
+	if err != nil {
+		sugar.Error(err)
+		return "Something went wrong FeelsBadMan", err
+	}
+
+	defer resp.Body.Close()
+
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		sugar.Error(err)
+		return "Something went wrong FeelsBadMan", err
+	}
+
+	// If the response was a known error message return a message with the error.
+	if string(body) == twitterUserNotFoundError {
+		return "Something went wrong: Twitter username not found", err
+	} else { // No known error was found, probably a tweet.
+		resp := fmt.Sprintf("Latest Tweet from @%s: \"%s \"", username, body)
+		return resp, nil
+	}
+}