From 515173478659654d067ffcc1bf04440c56fc5d5b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kry=C5=A1tof=20Pe=C5=A1ek=20=28Kof=29?=
 <krystof.pesek@gmail.com>
Date: Fri, 30 Oct 2026 01:44:10 +0100
Subject: [PATCH] feat(scan): Add scan-book interactive CLI for multi-page book
 scanning

---
 scan-book | 93 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)
 create mode 100755 scan-book

diff --git a/scan-book b/scan-book
new file mode 100755
index 0000000..a808dec
--- /dev/null
+++ b/scan-book
@@ -0,0 +1,93 @@
+#!/bin/bash
+# SCAN-BOOK // Interactive multi-page book scanning CLI
+# Skenování knih po stránkách přes Brother DCP-J4120DW (USB bazina / AirScan)
+
+set -e
+
+BOOK_NAME="$1"
+if [ -z "$BOOK_NAME" ]; then
+    BOOK_NAME="kniha_$(date +%Y%m%d_%H%M%S)"
+fi
+# Strip .pdf extension if user provided it
+BOOK_NAME="${BOOK_NAME%.pdf}"
+
+OUT_DIR="$HOME/Downloads/$BOOK_NAME"
+mkdir -p "$OUT_DIR"
+FINAL_PDF="$HOME/Downloads/${BOOK_NAME}.pdf"
+
+echo "======================================================================"
+echo "  KNIŽNÍ SKENER // BROTHER DCP-J4120DW (BAZINA USB)"
+echo "======================================================================"
+echo "  Kniha : $BOOK_NAME"
+echo "  Složka: $OUT_DIR"
+echo "  Výstup: $FINAL_PDF"
+echo ""
+echo "  Ovládání:"
+echo "    [ENTER] = Naskenovat aktuální stranu"
+echo "    r       = Znovu naskenovat poslední stranu (oprava posunu)"
+echo "    q       = Dokončit knihu a spojit do jednoho PDF"
+echo "======================================================================"
+echo ""
+
+PAGE=1
+
+while true; do
+    printf "[Strana %03d] Položte knihu na sklo a stiskněte [ENTER] (nebo 'q' pro konec): " "$PAGE"
+    read -r cmd
+    
+    if [[ "$cmd" == "q" || "$cmd" == "done" || "$cmd" == "exit" ]]; then
+        break
+    fi
+    
+    if [[ "$cmd" == "r" ]]; then
+        if [ $PAGE -gt 1 ]; then
+            PAGE=$((PAGE - 1))
+            echo "[-] Opakuji sken strany $PAGE..."
+        else
+            echo "[-] Ještě nebyla naskenována žádná strana."
+            continue
+        fi
+    fi
+    
+    PAGE_FILE="$OUT_DIR/page_$(printf '%04d' $PAGE).pdf"
+    printf "  [+] Skenuji stranu %03d (300 DPI True Gray)... " "$PAGE"
+    
+    # Execute scan on bazina via USB
+    ssh bazina "scanimage -d 'brother4:bus1;dev8' --resolution 300 --mode 'True Gray' -x 210 -y 297 --format=pdf" > "$PAGE_FILE" 2>/dev/null || {
+        # Fallback to network airscan if USB re-enumerated
+        scanimage -d "airscan:w0:Brother DCP-J4120DW" --resolution 300 --mode "Gray" -x 210 -y 297 --format=pdf > "$PAGE_FILE" 2>/dev/null
+    }
+    
+    if [ -s "$PAGE_FILE" ]; then
+        echo "OK ($(du -h "$PAGE_FILE" | cut -f1))"
+        PAGE=$((PAGE + 1))
+    else
+        echo "CHYBA: Sken se nezdařil. Zkontrolujte připojení tiskárny a zkuste to znovu."
+    fi
+    echo ""
+done
+
+TOTAL_PAGES=$(ls -1 "$OUT_DIR"/page_*.pdf 2>/dev/null | wc -l)
+
+if [ "$TOTAL_PAGES" -gt 0 ]; then
+    echo ""
+    echo "[*] Spojuji $TOTAL_PAGES stran do výsledného PDF..."
+    if command -v pdfunite >/dev/null 2>&1; then
+        pdfunite "$OUT_DIR"/page_*.pdf "$FINAL_PDF"
+    else
+        convert "$OUT_DIR"/page_*.pdf "$FINAL_PDF"
+    fi
+    
+    ln -sf "$FINAL_PDF" "$HOME/Downloads/kniha.pdf"
+    
+    echo "======================================================================"
+    echo "  [✓] KNIHA DOKONČENA!"
+    echo "  Počet stran: $TOTAL_PAGES"
+    echo "  Soubor     : $FINAL_PDF"
+    echo "  Odkaz      : ~/Downloads/kniha.pdf"
+    echo "  Velikost   : $(du -h "$FINAL_PDF" | cut -f1)"
+    echo "======================================================================"
+    notify-send "Kniha naskenována" "$TOTAL_PAGES stran v $FINAL_PDF" 2>/dev/null || true
+else
+    echo "[-] Nebyla naskenována žádná strana. Kniha nebyla vytvořena."
+fi