1 files changed, 23 insertions, 5 deletions
diff --git a/src/exercises/exercise.go b/src/exercises/exercise.go
index 2783381..22700c8 100644
--- a/src/exercises/exercise.go
+++ b/src/exercises/exercise.go
@@ -1,11 +1,29 @@
 package exercises
 
+import (
+	"os"
+	"regexp"
+)
+
+var notDoneRegex = regexp.MustCompile(`(?m)^\s*///?\s*I\s+AM\s+NOT\s+DONE`)
+
 type Exercise struct {
-	Name  string
-	Path  string
-	Mode  string
-	Hint  string
-	State State
+	Name string
+	Path string
+	Mode string
+	Hint string
+}
+
+func (e Exercise) State() State {
+	data, err := os.ReadFile(e.Path)
+	if err != nil {
+		return Pending
+	}
+
+	if notDoneRegex.Match(data) {
+		return Pending
+	}
+	return Done
 }
 
 type State int