add task system and task model for viewing task details

cmd/survey/tasks/task.go

@@ -0,0 +1,45 @@
+// task.go
+package tasks
+
+import (
+	"context"
+	"errors"
+
+	"github.com/LazyBachelor/LazyPM/internal/service"
+	tea "github.com/charmbracelet/bubbletea"
+)
+
+func NewTask(interfaceType Interface, aboutScreen tea.Model, questionnaire tea.Model) *Task {
+	return &Task{
+		interfaceType: interfaceType,
+		aboutScreen:   aboutScreen,
+		questionnaire: questionnaire,
+	}
+}
+
+func (t *Task) SetValidateFunc(fn ValidateFunc) {
+	t.validateFunc = fn
+}
+
+func (t *Task) SetDbStateFunc(fn DbStateFunc) {
+	t.dbStateFunc = fn
+}
+
+func (t *Task) SetInterface(interfaceType Interface) {
+	t.interfaceType = interfaceType
+}
+
+func (t *Task) Validate(ctx context.Context, svc *service.Services) (bool, error) {
+	if t.validateFunc == nil {
+		return false, errors.New("validateFunc is not set")
+	}
+	return t.validateFunc(ctx, svc)
+}
+
+func (t *Task) MigrateToTask(ctx context.Context, svc *service.Services, task *Task) error {
+	t = task
+	if t.dbStateFunc == nil {
+		return errors.New("dbStateFunc is not set")
+	}
+	return t.dbStateFunc(ctx, svc)
+}