refactoring to more granular flakes and modules

flakes/common/nix_modules/git/branchd.func.sh

@@ -0,0 +1,131 @@
+branchdel() {
+  # branchdel — remove a branch worktree (optional branch arg)
+  local branch_arg
+  branch_arg="$1"
+  local wt_path
+  wt_path=$(pwd)
+  local common_dir repo_dir
+  if ! common_dir=$(git rev-parse --git-common-dir 2>/dev/null); then
+    echo "Not inside a git repository." >&2
+    return 1
+  fi
+  if [ "${common_dir#/}" = "$common_dir" ]; then
+    common_dir="$(pwd)/$common_dir"
+  fi
+  repo_dir="${common_dir%%/.git*}"
+  if [ -z "$repo_dir" ]; then
+    echo "Unable to determine repository root." >&2
+    return 1
+  fi
+
+  # determine current branch in this worktree
+  local current default_branch branch target_wt
+  current=$(git rev-parse --abbrev-ref HEAD 2>/dev/null) || { echo "Not inside a git repository." >&2; return 1; }
+
+  default_branch=$(getdefault)
+
+  # choose branch: provided arg or current
+  if [ -z "$branch_arg" ]; then
+    branch="$current"
+  else
+    branch="$branch_arg"
+  fi
+  # normalize branch name if refs/heads/ was provided
+  branch="${branch#refs/heads/}"
+
+  # don't remove default
+  if [ "$branch" = "$default_branch" ] || [ "$branch" = "default" ]; then
+    echo "Refusing to remove default branch worktree ($default_branch)." >&2
+    return 1
+  fi
+
+  # find the worktree path for the requested branch
+  target_wt=$(git -C "$repo_dir" worktree list --porcelain 2>/dev/null | awk -v b="refs/heads/$branch" '
+    $1=="worktree" { w=$2 }
+    $1=="branch" && $2==b { print w; exit }
+  ')
+
+  # if not found in worktree list, check main worktree branch
+  if [ -z "$target_wt" ]; then
+    local main_branch
+    main_branch=$(git -C "$repo_dir" rev-parse --abbrev-ref HEAD 2>/dev/null || true)
+    if [ "$main_branch" = "$branch" ]; then
+      target_wt="$repo_dir"
+    fi
+  fi
+
+  if [ -z "$target_wt" ]; then
+    echo "No worktree found for branch '$branch'." >&2
+    return 1
+  fi
+
+  if [ "$target_wt" = "$repo_dir" ]; then
+    echo "Branch '$branch' is the main worktree at '$repo_dir'. Will not delete main worktree." >&2
+    return 1
+  fi
+
+  # if we're currently in that branch/worktree, switch to default and cd to repo root first
+  if [ "$current" = "$branch" ]; then
+    echo "Currently on branch '$branch' in '$wt_path'. Switching to default branch '$default_branch' in main worktree..."
+    if declare -f branch >/dev/null 2>&1; then
+      branch default || { echo "Failed to switch to default branch" >&2; return 1; }
+    else
+      git -C "$repo_dir" checkout "$default_branch" || { echo "Failed to checkout default branch" >&2; return 1; }
+    fi
+    cd "$repo_dir" || { echo "Failed to change directory to repo root: $repo_dir" >&2; return 1; }
+  fi
+
+  echo "Removing worktree at: $target_wt"
+  # helper: attempt a guarded, forceful removal of a directory
+  remove_dir_forcefully() {
+    local dir="$1"
+    if [ -z "$dir" ]; then
+      return 1
+    fi
+    # resolve absolute paths
+    local abs_dir abs_repo
+    abs_dir=$(readlink -f -- "$dir" 2>/dev/null) || abs_dir="$dir"
+    abs_repo=$(readlink -f -- "$repo_dir" 2>/dev/null) || abs_repo="$repo_dir"
+
+    # safety checks: do not remove repository root or /
+    if [ "$abs_dir" = "/" ] || [ "$abs_dir" = "$abs_repo" ]; then
+      echo "Refusing to remove unsafe path: $abs_dir" >&2
+      return 1
+    fi
+
+    # try plain rm -rf
+    rm -rf -- "$abs_dir" 2>/dev/null && return 0
+
+    # fix permissions then try again
+    chmod -R u+rwx "$abs_dir" 2>/dev/null || true
+    rm -rf -- "$abs_dir" 2>/dev/null && return 0
+
+    # try removing contents first, then remove directory
+    if find "$abs_dir" -mindepth 1 -exec rm -rf -- {} + 2>/dev/null; then
+      rmdir "$abs_dir" 2>/dev/null || true
+    fi
+
+    # final existence check
+    [ ! -e "$abs_dir" ]
+  }
+
+  # try unregistering the worktree, prefer normal then fallback to --force
+  if git -C "$repo_dir" worktree remove "$target_wt" 2>/dev/null || git -C "$repo_dir" worktree remove --force "$target_wt" 2>/dev/null; then
+    if remove_dir_forcefully "$target_wt"; then
+      echo "Removed worktree: $target_wt"
+    else
+      echo "Worktree removed from git, but failed to fully delete directory: $target_wt" >&2
+      echo "Attempted to force-delete; you may need to remove it manually with sudo." >&2
+    fi
+
+    # delete local branch if it exists
+    if git -C "$repo_dir" show-ref --verify --quiet "refs/heads/$branch"; then
+      git -C "$repo_dir" branch -D "$branch" 2>/dev/null || true
+      echo "Deleted local branch: $branch"
+    fi
+    return 0
+  fi
+
+  echo "Failed to remove worktree: $target_wt" >&2
+  return 1
+}