Break out canonical data fetching

Author: dem4ron

bin/generator-utils/fetch_canonical_data

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+
+if [ $# -ne 1 ]; then
+  echo "Usage: bin/generator-utils/fetch_canonical_data <exercise-slug>"
+  exit 1
+fi
+
+# check if curl is installed
+command -v curl >/dev/null 2>&1 || {
+  echo >&2 "curl is required but not installed. Please install it and make sure it's in your PATH."
+  exit 1
+}
+
+slug=$1
+
+curlopts=(
+  --silent
+  --show-error
+  --fail
+  --location
+  --retry 3
+  --max-time 4
+)
+curl "${curlopts[@]}" "https://raw.githubusercontent.com/exercism/problem-specifications/main/exercises/${slug}/canonical-data.json"

bin/generator-utils/templates.sh

@@ -14,17 +14,8 @@ use $(dash_to_underscore "$slug")::*;
 
 EOT
 
-    curlopts=(
-        --silent
-        --show-error
-        --fail
-        --location
-        --retry 3
-        --max-time 4
-    )
-    # fetch canonical_data
-    canonical_json=$(curl "${curlopts[@]}" "https://raw.githubusercontent.com/exercism/problem-specifications/main/exercises/${slug}/canonical-data.json")
-    echo "$canonical_json" >>canonical_data.json
+    canonical_json=$(bin/generator-utils/fetch_canonical_data "$slug")
+    echo "$canonical_json" >canonical_data.json
 
     if [ "${canonical_json}" == "404: Not Found" ]; then
         canonical_json=$(jq --null-input '{cases: []}')