#!/bin/bash
# scripts/relabel_issues.sh
# Usage: ./scripts/relabel_issues.sh <old-label> <new-label> [repository]

set -e

OLD_LABEL="$1"
NEW_LABEL="$2"
REPO="${3:-google-gemini/gemini-cli}"

if [ -z "$OLD_LABEL" ] || [ -z "$NEW_LABEL" ]; then
  echo "Usage: $0 <old-label> <new-label> [repository]"
  echo "Example: $0 'area/models' 'area/agent'"
  exit 1
fi

echo "🔍 Searching for open issues in '$REPO' with label '$OLD_LABEL'..."

# Fetch issues with the old label
ISSUES=$(gh issue list --repo "$REPO" --label "$OLD_LABEL" --state open --limit 1000 --json number,title)

COUNT=$(echo "$ISSUES" | jq '. | length')

if [ "$COUNT" -eq 0 ]; then
  echo "✅ No issues found with label '$OLD_LABEL'."
  exit 0
fi

echo "found $COUNT issues to relabel."

# Iterate and update
echo "$ISSUES" | jq -r '.[] | "\(.number) \(.title)"' | while read -r number title; do
  echo "🔄 Processing #$number: $title"
  echo "   - Removing: $OLD_LABEL"
  echo "   + Adding:   $NEW_LABEL"
  
  gh issue edit "$number" --repo "$REPO" --add-label "$NEW_LABEL" --remove-label "$OLD_LABEL"
  
  echo "   ✅ Done."
done

echo "🎉 All issues relabeled!"