Add script for checking for exercise updates

scripts/canonical_data_check.sh

@@ -0,0 +1,104 @@
+#!/usr/bin/env bash
+
+print_usage() {
+    echo "Usage: ./canonical_data_check.sh -t path/to/track -s path/to/problem/specifications"
+}
+
+# Execution begins
+
+command -v jq >/dev/null 2>&1 || {
+    echo >&2 "This script requires jq but it's not installed. Aborting."
+    exit 1
+}
+
+num_args=$#
+
+if [ $num_args -eq 0 ]
+then
+    print_usage
+    exit 0
+fi
+
+path_to_track=
+path_to_problem_specifications=
+
+while getopts ":t:s:" option
+do
+    case "$option" in
+        "t")
+            path_to_track="$OPTARG"
+            ;;
+        "s")
+            path_to_problem_specifications="$OPTARG"
+            ;;
+        *)
+            echo "Unrecognized option. Aborting."
+            print_usage
+            exit 1
+            ;;
+    esac
+done
+
+if [ -z "$path_to_track" ]
+then
+    echo "Path to track missing."
+    print_usage
+    exit 1
+fi
+
+if [ -z "$path_to_problem_specifications" ]
+then
+    echo "Path to problem specifications missing."
+    print_usage
+    exit 1
+fi
+
+config_file_path="$path_to_track/config.json"
+
+if ! [ -f "$config_file_path" ]
+then
+    echo "Config file not found at $config_file_path."
+    exit 1
+fi
+
+track_exercise_slugs=$(jq '.exercises[] | select(has("deprecated") | not) | .slug' $config_file_path | tr -d "\"")
+
+for slug in $track_exercise_slugs
+do
+    canonical_data_folder_path="$path_to_problem_specifications/exercises/$slug"
+
+    if ! [ -d "$canonical_data_folder_path" ]
+    then
+        echo "Canonical data folder $canonical_data_folder_path not found. Aborting."
+        exit 1
+    fi
+
+    canonical_data_file_path="$canonical_data_folder_path/canonical-data.json"
+
+    if ! [ -f "$canonical_data_file_path" ]
+    then
+        # echo "$slug: no canonical data found."
+        continue
+    fi
+
+    canonical_data_version=$(jq '.version' $canonical_data_file_path | tr -d "\"")
+
+    track_exercise_version_file_path="$path_to_track/exercises/$slug/.meta/version"
+
+    if ! [ -f "$track_exercise_version_file_path" ]
+    then
+        echo "$slug: needs update or version file (v$canonical_data_version)."
+        continue
+    fi
+
+    track_data_version=$(cat $track_exercise_version_file_path)
+
+    if [ "$track_data_version" = "$canonical_data_version" ]
+    then
+        # echo "$slug: up-to-date."
+        continue
+    else
+        echo "$slug: needs update (v$track_data_version -> v$canonical_data_version)."
+    fi
+
+done