[work] small fixes

bin/work

@@ -52,7 +52,11 @@ def td_format(td):
 def get_today_fields():
     try:
         with open(TODAY_FILE, "r") as f:
+            line_count = 0
             for line in f:
+                line_count += 1
+                if line_count > 1:
+                    log("Warning: incomplete day leftover in {}".format(TODAY_FILE))
                 if line.startswith(start_time.strftime("%Y-%m-%d")):
                     return line.strip().split(",")
     except FileNotFoundError:
@@ -131,7 +135,7 @@ def work_start(args):
     hour = start_time.strftime("%H:%M")
     if fields:
         die("You already started working")
-    with open(TODAY_FILE, "w") as f:
+    with open(TODAY_FILE, "a") as f:
         f.write("{},{}".format(
             start_time.strftime("%Y-%m-%d"), hour))
     log("Started working at {}".format(hour))
@@ -205,7 +209,8 @@ def work_parse(args):
             for line in f:
                 fields = line.split(",")
                 if len(fields) < 6:
-                    break
+                    log("Record: '{}' hasn't got enough fields ({})".format(line, len(fields)))
+                    continue
                 morning = datetime.strptime(fields[1], "%H:%M")
                 break_start = datetime.strptime(fields[2], "%H:%M")
                 break_end = datetime.strptime(fields[3], "%H:%M")