Adding storage to our data

Tasks.json

@@ -0,0 +1,14 @@
+[
+    {
+        "Title": "yeah yeah, do better",
+        "Status": true,
+        "CreatedAt": "2026-09-13T17:04:15.15332711-04:00",
+        "StatusAt": "2026-09-13T17:06:20.812974703-04:00"
+    },
+    {
+        "Title": "Do better",
+        "Status": true,
+        "CreatedAt": "2026-09-13T17:04:15.153327306-04:00",
+        "StatusAt": "2026-09-13T17:06:20.812571404-04:00"
+    }
+]

commands.go

@@ -0,0 +1,22 @@
+package main
+
+import "flag"
+
+type cmdflags struct {
+	add    string
+	del    int
+	edit   string
+	toggle int
+	list   bool
+}
+
+func newcmdflags() *cmdflags {
+	cf := cmdflags{}
+
+	flag.StringVar(&cf.add, "add", "", "add a new title")
+	flag.StringVar(&cf.add, "edit", "", "add a new title")
+	flag.StringVar(&cf.add, "del", "", "add a new title")
+	flag.StringVar(&cf.add, "toggle", "", "add a new title")
+	flag.StringVar(&cf.add, "list", "", "add a new title")
+	return nil
+}

main.go

@@ -2,13 +2,15 @@ package main
 
 func main() {
 	todos := Todos{}
-
-	todos.add("Learn more Go")
-	todos.add("You have to understand the code you are writing")
-	todos.add("You have to understand the code you are writing")
-
-	todos.toggle(0)
-
-	todos.delete(2)
+	storage := newStorage[Todos]("Tasks.json")
+	storage.load(&todos)
 	todos.print()
+	todos.toggle(1)
+	todos.print()
+	todos.delete(2)
+	todos.edit(0, "yeah yeah, do better")
+	todos.toggle(0)
+	todos.toggle(2)
+	todos.print()
+	storage.save(todos)
 }

storage.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"encoding/json"
+	"os"
+)
+
+type storage[T any] struct {
+	FileName string
+}
+
+func newStorage[T any](filename string) *storage[T] {
+	return &storage[T]{FileName: filename}
+}
+
+func (s *storage[T]) save(data T) error {
+	fileData, err := json.MarshalIndent(data, "", "    ")
+	if err != nil {
+		return err
+	}
+
+	return os.WriteFile(s.FileName, fileData, 0o644)
+}
+
+func (s *storage[T]) load(data *T) error {
+	fileData, err := os.ReadFile(s.FileName)
+	if err != nil {
+		return err
+	}
+
+	return json.Unmarshal(fileData, data)
+}

todo.go

@@ -10,20 +10,20 @@ import (
 )
 
 type Todo struct {
-	Title       string
-	Completed   bool
-	CreatedAt   time.Time
-	CompletedAt *time.Time
+	Title     string
+	Status    bool
+	CreatedAt time.Time
+	StatusAt  *time.Time
 }
 
 type Todos []Todo
 
 func (todos *Todos) add(title string) {
 	todo := Todo{
-		Title:       title,
-		Completed:   false,
-		CompletedAt: nil,
-		CreatedAt:   time.Now(),
+		Title:     title,
+		Status:    false,
+		StatusAt:  nil,
+		CreatedAt: time.Now(),
 	}
 
 	*todos = append(*todos, todo)
@@ -55,12 +55,12 @@ func (todos *Todos) toggle(index int) error {
 		return err
 	}
 
-	isCompeleted := t[index].Completed
+	isCompeleted := t[index].Status
 	if !isCompeleted {
 		completionTime := time.Now()
-		t[index].CompletedAt = &completionTime
+		t[index].StatusAt = &completionTime
 	}
-	t[index].Completed = !isCompeleted
+	t[index].Status = !isCompeleted
 	return nil
 }
 
@@ -77,15 +77,15 @@ func (todos *Todos) edit(index int, newTitle string) error {
 func (todos *Todos) print() {
 	table := table.New(os.Stdout)
 	table.SetRowLines(false)
-	table.SetHeaders("Index", "Titile", "Completed", "Created at", "Completed at")
+	table.SetHeaders("Index", "Title", "Status", "Created at", "Status at")
 	for index, t := range *todos {
 		completed := "❌"
 		completedAt := ""
 
-		if t.Completed {
+		if t.Status {
 			completed = "✅"
-			if t.CompletedAt != nil {
-				completedAt = t.CompletedAt.Format(time.RFC1123)
+			if t.StatusAt != nil {
+				completedAt = t.StatusAt.Format(time.RFC1123)
 			}
 		}
 		table.AddRow(strconv.Itoa(index), t.Title, completed, t.CreatedAt.Format(time.RFC1123), completedAt)