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98 lines
2.2 KiB
98 lines
2.2 KiB
package main
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import (
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"errors"
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"fmt"
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"os"
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"strconv"
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"strings"
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"github.com/fatih/color"
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)
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func check(err error) {
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if err != nil {
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fmt.Fprintf(os.Stderr, "[ERR] %s", err)
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}
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}
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type Todo struct {
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Title string
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Content string
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}
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type Todos struct {
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Items []Todo
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}
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func (todo *Todos) AddTodo(newTodo Todo) {
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todo.Items = append(todo.Items, newTodo)
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}
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func (todo *Todos) RemoveTodo(index int) (err error) {
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//remove todo via index
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if len(todo.Items) == 0 {
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return errors.New("[ERR] Todo list is empty!\n")
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}
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if index > len(todo.Items) {
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return errors.New("[ERR] Index out of bounds\n")
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}
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todo.Items = append(todo.Items[:index], todo.Items[index+1:]...)
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return nil
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}
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func (todo *Todos) ListTodo() (err error) {
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// Create a custom print function for convenience
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id := color.New(color.Bold, color.FgGreen).PrintfFunc()
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title := color.New(color.Bold, color.FgBlue).PrintfFunc()
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content := color.New(color.Bold, color.FgWhite).PrintfFunc()
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if len(todo.Items) == 0 {
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return errors.New("[ERR] Todo list is empty!\n")
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}
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for k, v := range todo.Items {
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id("[%d]", k)
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title("%s", v.Title)
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content("%s\n", v.Content)
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}
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return nil
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}
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func (todo *Todos) SaveToFile(filename string) error {
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var sb strings.Builder
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var FILE *os.File
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filename = filename + ".txt"
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for k, v := range todo.Items {
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fmt.Printf("#%d,%s,%s;\n", k, strings.ReplaceAll(v.Title, "\n", ""), strings.ReplaceAll(v.Content, "\n", ""))
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sb.WriteString(strconv.Itoa(k))
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sb.WriteString(",")
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sb.WriteString(strings.ReplaceAll(v.Title, "\n", ""))
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sb.WriteString(",")
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sb.WriteString(strings.ReplaceAll(v.Content, "\n", ""))
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sb.WriteString(";\n")
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}
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content := sb.String()
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fmt.Println(content)
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if _, err := os.Stat(filename); err != nil {
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if FILE, err = os.Create(filename); err != nil {
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return errors.New("[ERR] could not create file \n")
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}
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return errors.New("[ERR] file does not exist, creating one...\n")
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}
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FILE, _ = os.Create(filename) //errors already handled
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if _, err := FILE.WriteString(content); err != nil {
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return err
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//return errors.New("[ERR] could not write to file\n")
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}
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sb.Reset() //reset the string builder
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FILE.Close() //close the file
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return nil
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}
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