fix(install): prevent stdin stream truncation when running via pipe

Co-authored-by: Junie <junie@jetbrains.com>

install.sh

@@ -47,21 +47,25 @@ log_step() {
     printf "\n${CLR_BOLD}${CLR_CYAN}==>${CLR_RESET} ${CLR_BOLD}%s${CLR_RESET}\n" "$*"
 }
 
-# If stdin is a pipe (e.g. curl ... | bash), reconnect to /dev/tty if available for interactive prompts & TUI
-if [[ ! -t 0 ]]; then
-    if (exec < /dev/tty) 2>/dev/null; then
-        exec < /dev/tty
+TMP_DIR=""
+
+cleanup() {
+    if [[ -n "${TMP_DIR:-}" && -d "$TMP_DIR" ]]; then
+        log_info "Cleaning up temporary installation files..."
+        rm -rf "$TMP_DIR"
     fi
-fi
+}
+trap cleanup EXIT INT TERM
 
-REPO_URL="${REPO_URL:-https://gitea.creative-dragonslayer.de/Scripts/Setup.git}"
-REPO_BRANCH="${REPO_BRANCH:-}"
+main() {
+    local repo_url="${REPO_URL:-https://gitea.creative-dragonslayer.de/Scripts/Setup.git}"
+    local repo_branch="${REPO_BRANCH:-}"
 
-log_step "Debian Unstable & Hyprland Setup Framework Installer"
-log_info "Repository: $REPO_URL ${REPO_BRANCH:+(Branch: $REPO_BRANCH)}"
+    log_step "Debian Unstable & Hyprland Setup Framework Installer"
+    log_info "Repository: $repo_url ${repo_branch:+(Branch: $repo_branch)}"
 
-# Ensure git is available
-if ! command -v git >/dev/null 2>&1; then
+    # Ensure git is available
+    if ! command -v git >/dev/null 2>&1; then
         log_info "Installing git..."
         if [[ "$(id -u)" -eq 0 ]]; then
             DEBIAN_FRONTEND=noninteractive apt-get update -y
@@ -74,61 +78,64 @@ if ! command -v git >/dev/null 2>&1; then
             sudo DEBIAN_FRONTEND=noninteractive apt-get update -y
             sudo DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends git ca-certificates
         fi
-fi
-
-# Create temporary directory
-TMP_DIR="$(mktemp -d /tmp/debian-setup-XXXXXX)"
-cleanup() {
-    if [[ -d "$TMP_DIR" ]]; then
-        log_info "Cleaning up temporary installation files..."
-        rm -rf "$TMP_DIR"
     fi
-}
-trap cleanup EXIT INT TERM
 
-log_info "Cloning repository into temporary directory: $TMP_DIR..."
-CLONE_SUCCESS=0
-if [[ -n "$REPO_BRANCH" ]]; then
-    if git clone --depth 1 -b "$REPO_BRANCH" "$REPO_URL" "$TMP_DIR" 2>/dev/null; then
-        CLONE_SUCCESS=1
+    # Create temporary directory
+    TMP_DIR="$(mktemp -d /tmp/debian-setup-XXXXXX)"
+
+    log_info "Cloning repository into temporary directory: $TMP_DIR..."
+    local clone_success=0
+    if [[ -n "$repo_branch" ]]; then
+        if git clone --depth 1 -b "$repo_branch" "$repo_url" "$TMP_DIR" 2>/dev/null; then
+            clone_success=1
         else
-        log_warn "Failed to clone branch '$REPO_BRANCH', falling back to default branch..."
+            log_warn "Failed to clone branch '$repo_branch', falling back to default branch..."
             rm -rf "${TMP_DIR:?}"/* "${TMP_DIR:?}"/.* 2>/dev/null || true
         fi
-fi
-
-if [[ "$CLONE_SUCCESS" -eq 0 ]]; then
-    if git clone --depth 1 "$REPO_URL" "$TMP_DIR"; then
-        CLONE_SUCCESS=1
     fi
-fi
 
-if [[ "$CLONE_SUCCESS" -eq 0 ]]; then
-    log_error "Failed to clone repository from $REPO_URL"
+    if [[ "$clone_success" -eq 0 ]]; then
+        if git clone --depth 1 "$repo_url" "$TMP_DIR"; then
+            clone_success=1
+        fi
+    fi
+
+    if [[ "$clone_success" -eq 0 ]]; then
+        log_error "Failed to clone repository from $repo_url"
         exit 1
-fi
+    fi
 
-cd "$TMP_DIR"
-chmod +x setup.sh
+    cd "$TMP_DIR"
+    chmod +x setup.sh
 
-log_success "Repository cloned successfully. Starting setup orchestrator..."
+    log_success "Repository cloned successfully. Starting setup orchestrator..."
 
-# Check if dry-run flag is requested
-is_dry_run=0
-for arg in "$@"; do
+    # Check if dry-run flag is requested
+    local is_dry_run=0
+    for arg in "$@"; do
         if [[ "$arg" == "-d" || "$arg" == "--dry-run" ]]; then
             is_dry_run=1
             break
         fi
-done
+    done
 
-# Execute setup.sh with root privileges (or directly if dry-run) while preserving arguments
-if [[ "$(id -u)" -eq 0 ]] || [[ "$is_dry_run" -eq 1 ]]; then
-    ./setup.sh "$@"
-else
+    # Prepare command to execute setup.sh
+    local -a setup_cmd=()
+    if [[ "$(id -u)" -ne 0 ]] && [[ "$is_dry_run" -eq 0 ]]; then
         if ! command -v sudo >/dev/null 2>&1; then
             log_error "sudo is required to run setup.sh. Please install sudo or run as root."
             exit 1
         fi
-    sudo ./setup.sh "$@"
-fi
+        setup_cmd+=(sudo)
+    fi
+    setup_cmd+=(./setup.sh "$@")
+
+    # Reconnect stdin to /dev/tty if stdin is currently piped and /dev/tty is accessible (for interactive prompts/TUI)
+    if [[ ! -t 0 ]] && [[ -e /dev/tty ]] && ( : < /dev/tty ) 2>/dev/null; then
+        "${setup_cmd[@]}" < /dev/tty
+    else
+        "${setup_cmd[@]}"
+    fi
+}
+
+main "$@"