create google sheets manipulation file

cmd/app/gsheets.go

@@ -0,0 +1,59 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+    "time"
+
+	"google.golang.org/api/option"
+	"google.golang.org/api/sheets/v4"
+)
+
+func (bc *BotController) SyncPaidUsersToSheet() error {
+    reservations, _ := bc.GetAllReservations()
+
+	ctx := context.Background()
+	srv, err := sheets.NewService(ctx,
+        option.WithCredentialsFile("./credentials.json"),
+        option.WithScopes(sheets.SpreadsheetsScope),
+    )
+	if err != nil {
+		return fmt.Errorf("unable to retrieve Sheets client: %v", err)
+	}
+
+	var values [][]interface{}
+    values = append(values, []interface{}{"Телеграм ID", "Имя", "Фамилия", "Никнейм", "Указанное имя", "Дата", "Телефон", "Статус"})
+
+	for _, reservation := range reservations {
+        if reservation.Status != Paid {continue}
+
+        uid := reservation.UserID
+        user, _ := bc.GetUserByID(uid)
+        ui, _ := bc.GetUserInfo(uid)
+        event, _ := bc.GetEvent(reservation.EventID)
+        status := ReservationStatusString[reservation.Status]
+
+		values = append(values, []interface{}{user.ID, ui.FirstName, ui.LastName, ui.Username, "TODO", formatDate(event.Date), "", status})
+	}
+
+	// Prepare the data to be written to the sheet
+	valueRange := &sheets.ValueRange{
+		Values: values,
+	}
+
+	_, err = srv.Spreadsheets.Values.Clear(bc.cfg.SheetID, "A1:Z1000", &sheets.ClearValuesRequest{}).Do()
+
+	// Write the data to the specified range in the sheet
+	_, err = srv.Spreadsheets.Values.Update(bc.cfg.SheetID, "A1", valueRange).ValueInputOption("RAW").Do()
+	if err != nil {
+		return fmt.Errorf("unable to write data to sheet: %v", err)
+	}
+
+	log.Printf("Successfully synced %d reservations to the Google Sheet.", len(reservations))
+	return nil
+}
+
+func formatDate(t *time.Time) string {
+    return t.Format("02.01 15:04")
+}