refactor(cli.go, translate.go): simplify translation logic and improv…

…e code readability

- Removed unnecessary string manipulation and chunk processing in `cli.go` to streamline translation process.
- Updated `translate.go` to enhance the `trimDividers` function, making it more efficient and straightforward.

internal/cli/cli.go

@@ -10,7 +10,6 @@ import (
 	"io/fs"
 	"os"
 	"os/signal"
-	"strings"
 	"syscall"
 	"time"
 
@@ -196,25 +195,17 @@ func (app *App) translate() {
 		options.Translate.SourceLang = ""
 	}
 
-	chunks := getChunks(string(source), options.Translate.SplitChunks, options.Verbose)
-
-	var results []string
-	for _, chunk := range chunks {
-		chunkResult, err := translator.Translate(
-			ctx,
-			dragoman.TranslateParams{
-				Document:     chunk,
-				Source:       options.Translate.SourceLang,
-				Target:       options.Translate.TargetLang,
-				Preserve:     options.Translate.Preserve,
-				Instructions: options.Translate.Instructions,
-			},
-		)
-		app.kong.FatalIfErrorf(err)
-		results = append(results, chunkResult)
-	}
-
-	result := strings.Join(results, "\n\n")
+	result, err := translator.Translate(
+		ctx,
+		dragoman.TranslateParams{
+			Document:     string(source),
+			Source:       options.Translate.SourceLang,
+			Target:       options.Translate.TargetLang,
+			Preserve:     options.Translate.Preserve,
+			Instructions: options.Translate.Instructions,
+		},
+	)
+	app.kong.FatalIfErrorf(err, "failed to translate document")
 
 	if options.Translate.Dry {
 		fmt.Fprintf(os.Stdout, "%s\n", result)

translate.go

@@ -118,16 +118,14 @@ func (t *Translator) translateChunk(ctx context.Context, chunk string, params Tr
 		return "", err
 	}
 
-	response = trimDividers(response)
-
-	return response, nil
+	return trimDividers(response), nil
 }
 
 func trimDividers(text string) string {
 	lines := strings.Split(text, "\n")
 
-	if len(lines) < 1 {
-		return strings.TrimSpace(text)
+	if len(lines) == 0 {
+		return text
 	}
 
 	out := slices.Clone(lines)