1 files changed, 75 insertions, 0 deletions
diff --git a/internal/timer/operations.go b/internal/timer/operations.go
new file mode 100644
index 0000000..3035b58
--- /dev/null
+++ b/internal/timer/operations.go
@@ -0,0 +1,75 @@
+package timer
+
+import (
+	"fmt"
+	"os"
+	"time"
+)
+
+func StartTimer() (string, error) {
+	state, err := LoadState()
+	if err != nil {
+		return "", fmt.Errorf("error loading state: %w", err)
+	}
+
+	if state.Running {
+		return "Timer is already running.", nil
+	}
+
+	state.Running = true
+	state.StartTime = time.Now()
+	if err := state.Save(); err != nil {
+		return "", fmt.Errorf("error saving state: %w", err)
+	}
+	return "Timer started.", nil
+}
+
+func StopTimer() (string, error) {
+	state, err := LoadState()
+	if err != nil {
+		return "", fmt.Errorf("error loading state: %w", err)
+	}
+
+	if !state.Running {
+		return "Timer is not running.", nil
+	}
+
+	state.Running = false
+	state.ElapsedTime += time.Since(state.StartTime)
+	if err := state.Save(); err != nil {
+		return "", fmt.Errorf("error saving state: %w", err)
+	}
+	return "Timer stopped.", nil
+}
+
+func GetStatus() (string, error) {
+	state, err := LoadState()
+	if err != nil {
+		return "", fmt.Errorf("error loading state: %w", err)
+	}
+
+	if state.Running {
+		elapsed := (state.ElapsedTime + time.Since(state.StartTime)).Round(time.Second)
+		return fmt.Sprintf("Status: Running\nElapsed Time: %s", elapsed), nil
+	} else {
+		elapsed := state.ElapsedTime.Round(time.Second)
+		return fmt.Sprintf("Status: Stopped\nElapsed Time: %s", elapsed), nil
+	}
+}
+
+func ResetTimer() (string, error) {
+	stateFile, err := GetStateFile()
+	if err != nil {
+		return "", fmt.Errorf("error getting state file path: %w", err)
+	}
+	if err := os.Remove(stateFile); err != nil {
+		if !os.IsNotExist(err) {
+			return "", fmt.Errorf("error resetting timer: %w", err)
+		}
+	}
+	state := State{}
+	if err := state.Save(); err != nil {
+		return "", fmt.Errorf("error saving state: %w", err)
+	}
+	return "Timer reset.", nil
+}
+\ No newline at end of file