1 files changed, 40 insertions, 0 deletions
diff --git a/internal/task/stats.go b/internal/task/stats.go
new file mode 100644
index 0000000..c516249
--- /dev/null
+++ b/internal/task/stats.go
@@ -0,0 +1,40 @@
+package task
+
+import "time"
+
+// TotalTasks returns the number of tasks provided.
+func TotalTasks(tasks []Task) int {
+	return len(tasks)
+}
+
+// InProgressTasks returns the number of tasks that have been started and are not completed.
+func InProgressTasks(tasks []Task) int {
+	count := 0
+	for _, t := range tasks {
+		if t.Status == "completed" {
+			continue
+		}
+		if t.Start != "" {
+			count++
+		}
+	}
+	return count
+}
+
+// DueTasks returns the number of tasks with a due date that is not in the future.
+func DueTasks(tasks []Task, now time.Time) int {
+	count := 0
+	for _, t := range tasks {
+		if t.Status == "completed" || t.Due == "" {
+			continue
+		}
+		ts, err := time.Parse("20060102T150405Z", t.Due)
+		if err != nil {
+			continue
+		}
+		if !ts.After(now) {
+			count++
+		}
+	}
+	return count
+}