feat(orchestrator): build copy plan from per-account mapping + exclusions

internal/orchestrator/planfolders_test.go

@@ -0,0 +1,40 @@
+package orchestrator
+
+import "testing"
+
+func names(ps []folderPlan) []string {
+	out := make([]string, len(ps))
+	for i, p := range ps {
+		out[i] = p.src + "->" + p.dst
+	}
+	return out
+}
+
+func TestPlanFolders(t *testing.T) {
+	folders := []string{"INBOX", "Спам", "Trash", "Sent"}
+
+	// Empty config: every folder syncs to its own name, in order.
+	got := planFolders(folders, nil, nil)
+	if len(got) != 4 || got[0].src != "INBOX" || got[0].dst != "INBOX" {
+		t.Fatalf("empty config: %v", names(got))
+	}
+
+	// Rename + exclusion.
+	got = planFolders(folders,
+		map[string]string{"Спам": "Spam"},
+		[]string{"Trash"})
+	if len(got) != 3 {
+		t.Fatalf("want 3 plans (Trash excluded), got %v", names(got))
+	}
+	for _, p := range got {
+		if p.src == "Trash" {
+			t.Fatalf("excluded folder present: %v", names(got))
+		}
+		if p.src == "Спам" && p.dst != "Spam" {
+			t.Fatalf("rename not applied: %v", names(got))
+		}
+		if p.src == "INBOX" && p.dst != "INBOX" {
+			t.Fatalf("unmapped folder should keep its name: %v", names(got))
+		}
+	}
+}