feat: Add configuration file for GitHub to Slack mapping

Author: LikeCarter

.functions

@@ -189,40 +189,51 @@ function aws.print-all-instances() {
   done
 }
 
+# Configuration file path
+CONFIG_FILE="reviewers.txt"
 
 function ghpra() {
   echo "Enter a prefix for the PR title (e.g. fix)"
   read -r PREFIX
   echo "Creating PR with prefix: $PREFIX"
 
-  # GitHub to Slack username mapping
-  declare -A gh_to_slack=(
-    ["<GH_USERNAME>"]="<SLACK_DISPLAYNAME>"
-    ["<GH_USERNAME>"]="<SLACK_DISPLAYNAME>"
-  )
-
-  # Randomly select code owners
-  frontend=$(shuf -e GH_USERNAME GH_USERNAME -n 1)
-  backend=$(shuf -e GH_USERNAME GH_USERNAME -n 1)
-  infra=$(shuf -e GH_USERNAME GH_USERNAME -n 1)
-  migration="<GH_USERNAME>"
-  other="<GH_USERNAME>"
+  # Associative arrays for mapping
+  declare -A gh_to_slack
+  declare -A regex_to_gh
+
+  # Read configuration file
+  while IFS=, read -r github_user slack_user regex_path; do
+    # Trim whitespace
+    github_user=$(echo "$github_user" | xargs)
+    slack_user=$(echo "$slack_user" | xargs)
+    regex_path=$(echo "$regex_path" | xargs)
+    
+    # Populate the associative arrays
+    gh_to_slack["$github_user"]="$slack_user"
+    regex_to_gh["$regex_path"]="$github_user"
+  done < "$CONFIG_FILE"
 
   declare -a reviewers
 
-  # Determine modified directories and assign reviewers
+  # Determine modified directories and assign reviewers based on regex
   git diff --name-only HEAD HEAD~1 | while read -r file; do
-    case "$file" in
-      frontend/*) reviewers+=("$frontend") ;;
-      api/*) reviewers+=("$backend") ;;
-      migration/*) reviewers+=("$migration") ;;
-      .github/*) reviewers+=("$infra") ;;
-    esac
+    for regex in "${!regex_to_gh[@]}"; do
+      if [[ "$file" =~ $regex ]]; then
+        reviewers+=("${regex_to_gh[$regex]}")
+        break
+      fi
+    done
   done
 
   # Remove duplicate reviewers
   reviewers=($(printf "%s\n" "${reviewers[@]}" | sort -u))
 
+  # If no reviewers were found, assign a default
+  if [[ ${#reviewers[@]} -eq 0 ]]; then
+    echo "No reviewers found for the modified files. Please specify a reviewer."
+    exit 1
+  fi
+
   assignee=$(IFS=,; echo "${reviewers[*]}")
   title="$PREFIX: $(git symbolic-ref --short HEAD)"
 
@@ -236,14 +247,21 @@ function ghpra() {
 
   if [[ -n "$existing_pr" ]]; then
     echo "PR already exists: $existing_pr"
-    echo "Copy and paste the following in Slack:"
-    echo "[$title]($existing_pr)"
+    pr_url=$existing_pr
   else
     output=$(gh pr create --fill --title="$title" --reviewer "$assignee" --assignee "$assignee")
     echo "PR created: $output"
-    echo "Copy and paste the following in Slack:"
-    echo "[$title]($output)"
+    pr_url=$(echo "$output" | grep -o 'https://github\.com/[^[:space:]]*')
   fi
+  
+  # Check for a valid URL before proceeding
+  if [[ -z "$pr_url" ]]; then
+    echo "Could not find a valid PR URL. Please check the 'gh pr create' output."
+    exit 1
+  fi
+
+  echo "Copy and paste the following in Slack:"
+  echo "<$pr_url|$title>"
 
   # Notify reviewers on Slack
   for reviewer in "${reviewers[@]}"; do