Git Spotlight

echo "\033[36m⚡ Finding most frequently changed files...\033[0m"
result=$(git log --since="6 months ago" --name-only --pretty="format:" | \
  grep -v "^$" | \
  sort | \
  uniq -c | \
  sort -rn | \
  head -10 | \
  awk '{printf "    %d changes: %s\n", $1, $2}')

if [ -z "$result" ]; then
  echo "\033[33mNo hotspots found matching your criteria\033[0m"
else
  count=$(echo "$result" | wc -l | tr -d ' ')
  echo "\033[32mFound $count hotspots:\033[0m"
  echo "$result" | awk '{printf "%s%s%s\n", "\033[1m", $0, "\033[0m"}'
fi

echo "\033[36m🏰 Initializing dungeon search...\033[0m"
tmpdir=$(mktemp -d 2>/dev/null || mktemp -d -t 'tmpdir')
trap 'rm -rf "$tmpdir"' EXIT

echo "\033[34m📊 Analyzing change patterns...\033[0m"
git log --since="6 months ago" --name-only --pretty="format:" | \
  grep -v "^$" | \
  sort | \
  uniq -c | \
  sort -rn | \
  awk '$1 >= 5 {print $1, $2}' > "$tmpdir/files"

if [ ! -s "$tmpdir/files" ]; then
  echo "\033[33mNo files found matching your criteria\033[0m"
  exit 0
fi

echo "\033[34m👥 Analyzing author patterns...\033[0m"
found_dungeons=0

while IFS= read -r line; do
  changes=$(echo "$line" | awk '{print $1}')
  file=$(echo "$line" | awk '{print $2}')
  [ ! -f "$file" ] && continue
  
  author_count=$(git log --follow --since="6 months ago" --pretty="format:%an" -- "$file" | sort -u | \
    sort | \
    uniq | \
    wc -l | \
    tr -d '[:space:]')
  
  if [ "$author_count" -le 2 ]; then
    found_dungeons=$((found_dungeons + 1))
    if [ "$found_dungeons" -le 10 ]; then
      echo "\n\033[35mDungeon found: \033[1m$file\033[0m"
      echo "\033[36mChanges in last 6 months: \033[1m$changes\033[0m"
      echo "\033[36mAuthors:\033[0m"
      git log --follow --since="6 months ago" --pretty="format:%an" -- "$file" | sort | uniq -c | sort -nr | \
        awk '{
          count=$1
          author=$2
          for(i=3;i<=NF;i++) author=author " " $i
          printf "  %s%s: %d changes%s\n", "\033[1m", author, count, "\033[0m"
        }'
    fi
  fi
done < "$tmpdir/files"

if [ "$found_dungeons" -eq 0 ]; then
  echo "\033[33mNo dungeons found matching your criteria\033[0m"
else
  echo "\n\033[32mFound $found_dungeons dungeons in total\033[0m"
fi

echo "\033[36m🧲 Initializing dependency analysis...\033[0m"
tmpdir=$(mktemp -d 2>/dev/null || mktemp -d -t 'tmpdir')
trap 'rm -rf "$tmpdir"' EXIT

get_related_files() {
  local target_file="$1"
  
  echo "\033[2mFinding commits for $target_file...\033[0m" >&2
  local target_commits=$(git log --follow --since="6 months ago" --pretty="format:%H" -- "$target_file")
  
  echo "\033[2mAnalyzing co-changes...\033[0m" >&2
  echo "$target_commits" | while read -r commit; do
    git diff-tree --no-commit-id --name-only -r $commit | grep -v "^$target_file$"
  done | \
    grep -v "^$" | \
    sort | \
    uniq -c | \
    sort -rn | \
    head -5 | \
    tee "$tmpdir/cochanges_${target_file//\//_}" | \
    awk '{printf "  %s%d co-changes: %s%s\n", "\033[1m", $1, $2, "\033[0m"}'
}

get_total_cochanges() {
  local file="$1"
  awk '{sum += $1} END {print sum}' "$tmpdir/cochanges_${file//\//_}" 2>/dev/null || echo 0
}

echo "\033[34m🔍 Finding frequently coupled files...\033[0m"
git log --since="6 months ago" --name-only --pretty="format:" | \
  grep -v "^$" | \
  grep -v "^[a-f0-9]\{7,\}$" | \
  sort | \
  uniq -c | \
  sort -rn | \
  awk '$1 >= 3 {print $2}' > "$tmpdir/candidates"

if [ ! -s "$tmpdir/candidates" ]; then
  echo "\033[33mNo dependency magnets found matching your criteria\033[0m"
  exit 0
fi

echo "\033[34m📊 Analyzing dependencies...\033[0m"
# First pass: collect co-changes data
while IFS= read -r file; do
  [ ! -f "$file" ] && continue
  get_related_files "$file" >/dev/null
done < "$tmpdir/candidates"

echo "\033[34m🔍 Analyzing results...\033[0m"
found_magnets=0
while IFS= read -r file; do
  [ ! -f "$file" ] && continue
  total_cochanges=$(get_total_cochanges "$file")
  echo "$total_cochanges $file"
done < "$tmpdir/candidates" | \
  sort -rn | \
  head -10 | \
  while IFS= read -r line; do
    file=$(echo "$line" | cut -d' ' -f2-)
    total=$(echo "$line" | cut -d' ' -f1)
    found_magnets=$((found_magnets + 1))
    echo "\n\033[35mDependency Magnet: \033[1m$file\033[0m"
    echo "\033[36mTotal co-changes: \033[1m$total\033[0m"
    echo "\033[36mRelated files:\033[0m"
    cat "$tmpdir/cochanges_${file//\//_}"
  done

if [ "$found_magnets" -eq 0 ]; then
  echo "\033[33mNo dependency magnets found matching your criteria\033[0m"
else
  echo "\n\033[32mFound $found_magnets dependency magnets with highest coupling\033[0m"
fi