An iterated version of my git clone or gh repo clone

clone.sh

function clone() {
  if [[ -z $1 ]]; then
    echo "Error: Repository name or URL is required."
    return 1
  fi

  input_url="$1"
  branch=""
  repo_url=""
  github_user=""
  repo_name=""
  gh_clone_url=""

  echo "DEBUG: Input URL: '$input_url'"

  # Case 1: Handle full GitHub URL with branch (e.g., https://github.com/user/repo/tree/branch)
  # Use proper zsh regex matching with =~ operator
  if [[ "$input_url" =~ ^https?://github\.com/([^/]+)/([^/]+)/tree/(.+)$ ]]; then
    github_user="${match[1]}"
    repo_name="${match[2]}"
    # Strip .git if present
    repo_name="${repo_name%.git}"
    branch="${match[3]}" # This captures the full path after tree/
    repo_url="https://github.com/$github_user/$repo_name.git"
    gh_clone_url="https://github.com/$github_user/$repo_name"
    echo "DEBUG: Matched Case 1 (with branch URL)"

  # Case 2: Handle full GitHub URL (e.g., https://github.com/user/repo.git or without .git)
  elif [[ "$input_url" =~ ^https?://github\.com/([^/]+)/([^/]+)(\.git)?$ ]]; then
    github_user="${match[1]}"
    repo_name="${match[2]}"
    # Strip .git if present - this is the key fix
    repo_name="${repo_name%.git}"
    repo_url="https://github.com/$github_user/$repo_name.git"
    gh_clone_url="https://github.com/$github_user/$repo_name"
    echo "DEBUG: Matched Case 2 (full HTTPS URL)"

  # Case 3: Handle SSH format (e.g., [email protected]:user/repo.git)
  elif [[ "$input_url" =~ ^git@github\.com:([^/]+)/([^/]+)(\.git)?$ ]]; then
    github_user="${match[1]}"
    repo_name="${match[2]}"
    # Strip .git if present
    repo_name="${repo_name%.git}"
    repo_url="[email protected]:$github_user/$repo_name.git"
    gh_clone_url="$repo_url"
    echo "DEBUG: Matched Case 3 (SSH URL)"

  # Case 4: Handle shorthand like user/repo
  elif [[ "$input_url" =~ ^([^/]+)/([^/]+)$ ]]; then
    github_user="${match[1]}"
    repo_name="${match[2]}"
    # Strip .git if present (though unlikely in shorthand)
    repo_name="${repo_name%.git}"
    repo_url="https://github.com/$github_user/$repo_name.git"
    gh_clone_url="https://github.com/$github_user/$repo_name"
    echo "DEBUG: Matched Case 4 (shorthand)"

  else
    echo "Error: Could not determine repository from input '$input_url'"
    return 1
  fi

  echo "DEBUG: Extracted GitHub User: '$github_user'"
  echo "DEBUG: Extracted Repo Name: '$repo_name'"
  echo "DEBUG: Extracted Branch: '$branch' (if applicable)"
  echo "DEBUG: Internal Git URL (repo_url): '$repo_url'"
  echo "DEBUG: URL passed to gh repo clone (gh_clone_url): '$gh_clone_url'"

  target_dir="${2:-$repo_name}"
  echo "DEBUG: Target directory for clone: '$target_dir'"

  echo "DEBUG: Executing: gh repo clone '$gh_clone_url' '$target_dir'"

  if gh repo clone "$gh_clone_url" "$target_dir"; then
    echo "DEBUG: Initial clone successful."
    cd "$target_dir" || { echo "Failed to navigate to $target_dir"; return 1; }
    if [[ -n "$branch" ]]; then
      echo "DEBUG: Attempting to fetch and checkout branch '$branch'..."
      git fetch origin "$branch" || echo "Warning: Failed to fetch branch '$branch'"
      git checkout "$branch" || echo "Warning: Failed to checkout branch '$branch'"
    fi
    return 0
  else
    echo "DEBUG: Initial clone failed. Trying fallback directories."
    echo "Initial clone failed, retrying with alternate folder names..."
    lowercase_github_user=$(echo "$github_user" | tr '[:upper:]' '[:lower:]')
    base_dir="${repo_name}_${lowercase_github_user}"
    retry_count=1
    max_retries=100

    while [[ $retry_count -le $max_retries ]]; do
      fallback_dir="${base_dir}_$retry_count"
      echo "DEBUG: Attempting retry with folder: '$fallback_dir'"
      echo "DEBUG: Executing: gh repo clone '$gh_clone_url' '$fallback_dir'"

      if gh repo clone "$gh_clone_url" "$fallback_dir"; then
        echo "DEBUG: Retry clone successful."
        cd "$fallback_dir" || { echo "Failed to navigate to $fallback_dir"; return 1; }
        if [[ -n "$branch" ]]; then
          echo "DEBUG: Attempting to fetch and checkout branch '$branch' for retry clone..."
          git fetch origin "$branch" || echo "Warning: Failed to fetch branch '$branch'"
          git checkout "$branch" || echo "Warning: Failed to checkout branch '$branch'"
        fi
        return 0
      fi
      ((retry_count++))
    done

    echo "Clone failed after $max_retries attempts. Please check the repository URL or your gh CLI setup."
    return 1
  fi
}