1 files changed, 32 insertions, 1 deletions
diff --git a/scripts/assert-todos.sh b/scripts/assert-todos.sh
index be3974a..dabe680 100755
--- a/scripts/assert-todos.sh
+++ b/scripts/assert-todos.sh
@@ -1,7 +1,38 @@
-#!/bin/sh -eux
+#!/bin/sh -eu
 
 if git grep FIXME | grep -Ev '^(vendor/|scripts/assert-todos.sh|locale/)'; then
   echo "Found dangling FIXME markers on the project."
   echo "You should write them down properly on TODOs.org."
   exit 1
 fi
+
+KNOWN_IDS=''
+has_error=0
+# shellcheck disable=2013
+for todo in $(sed -e '/^\* Tasks$/,/^\* Improvements$/!d' TODOs.org | grep -nE '^\*\* .*$' | cut -d: -f1); do
+  if sed "${todo}q;d" TODOs.org | grep -qE '^\*\* (CANCELLED|DONE)'; then
+    ID_OFFSET=3
+  else
+    ID_OFFSET=2
+  fi
+  line_n="$((todo+ID_OFFSET))"
+  ID_LINE="$(sed "${line_n}q;d" TODOs.org)"
+  if echo "$ID_LINE" | grep -q '^:CUSTOM_ID: .*$'; then
+    ID="$(echo "$ID_LINE" | awk '{print $2}')"
+    if echo "$KNOWN_IDS" | grep -q "$ID"; then
+      echo "Duplicated ID: $ID"
+      has_error=1
+    else
+      if [ -z "$KNOWN_IDS" ]; then
+        KNOWN_IDS="$ID"
+      else
+        KNOWN_IDS="$KNOWN_IDS:$ID"
+      fi
+    fi
+  else
+    echo "Missing ID for TODO in line $line_n"
+    has_error=1
+  fi
+done
+
+exit "$has_error"