From 05a76f289912a7a0cdf3749057c376019fe0b68b Mon Sep 17 00:00:00 2001
From: Xavier Del Campo Romero <xavi.dcr@tutanota.com>
Date: Sat, 8 Jul 2023 03:39:40 +0200
Subject: [PATCH] WIP add thumbnail CLI tools

---
 README.md |  4 ++-
 tngen     | 76 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 watchdir  | 52 +++++++++++++++++++++++++++++++++++++
 3 files changed, 131 insertions(+), 1 deletion(-)
 create mode 100755 tngen
 create mode 100755 watchdir

diff --git a/README.md b/README.md
index 1c62dba..b6ea50d 100644
--- a/README.md
+++ b/README.md
@@ -45,6 +45,8 @@ to `slcl`. If required, encryption should be done before uploading e.g.: using
 - `xxd` (for [`usergen`](usergen) only).
 - `jq` (for [`usergen`](usergen) only).
 - CMake (optional).
+- `entr` (for [`watchdir`](watchdir) only).
+- ImageMagick (for [`tngen`](tngen) only).
 
 ### Ubuntu / Debian
 
@@ -57,7 +59,7 @@ sudo apt install build-essential libcjson-dev libssl-dev
 #### Optional packages
 
 ```sh
-sudo apt install cmake xxd jq
+sudo apt install cmake xxd jq inotify-tools imagemagick
 ```
 
 ## How to use
diff --git a/tngen b/tngen
new file mode 100755
index 0000000..6b871de
--- /dev/null
+++ b/tngen
@@ -0,0 +1,76 @@
+#! /bin/sh
+
+set -e
+
+usage()
+{
+    echo "$0 [-s <size>] [-h] -d <dir> <path>"
+}
+
+SIZE=96
+
+while getopts s:d:h arg
+do
+    case $arg in
+    d) DIR="$OPTARG"
+    ;;
+    s) SIZE="$OPTARG"
+    ;;
+    h) usage
+        exit 0
+    ;;
+    ?) usage >&2
+        exit 1
+    ;;
+    esac
+done
+
+if [ -z "$DIR" ]
+then
+    usage >&2
+    exit 1
+fi
+
+shift $(($OPTIND - 1))
+
+if [ $# != 1 ]; then
+    usage >&2
+    exit 1
+fi
+
+F="$1"
+
+gen()
+{
+    IN="$1"
+    OUT="$2"
+
+    if [ -z "$OUT" ]
+    then
+        echo Expected output filename >&2
+        return 1
+    fi
+
+    mkdir -p "$(dirname "$OUT")"
+
+    if convert -thumbnail x$SIZE "$IN" "$OUT"
+    then
+        echo Created $OUT
+    else
+        echo Failed to create $OUT >&2
+    fi
+}
+
+while read f; do
+    if [ "$f" != "" ]
+    then
+        THUMBNAIL=$(echo "$f" | sed "s,$DIR/user/,$DIR/thumbnails/,")
+        gen "$f" "$THUMBNAIL"
+    fi
+done <<-EOF
+    $(find "$F" -type f \
+        -a -iname '*.jpeg' \
+        -o -iname '*.jpg' \
+        -o -iname '*.png' \
+        -o -iname '*.jpeg')
+EOF
diff --git a/watchdir b/watchdir
new file mode 100755
index 0000000..fe215b2
--- /dev/null
+++ b/watchdir
@@ -0,0 +1,52 @@
+#! /bin/sh
+
+usage()
+{
+    echo "$0 [-s <size>] [-r] [-h] [-d <subdir>] <dir>"
+}
+
+REGEN=0
+SIZE=96
+
+while getopts rs:d:h arg
+do
+    case $arg in
+    r) REGEN=1
+    ;;
+    s) SIZE="$OPTARG"
+    ;;
+    h) usage
+        exit 0
+    ;;
+    d) SUBDIR="$OPTARG"
+    ;;
+    ?) usage >&2
+        exit 1
+    ;;
+    esac
+done
+
+shift $(($OPTIND - 1))
+
+if [ $# != 1 ]; then
+    usage >&2
+    exit 1
+fi
+
+DIR="$1"
+
+[ "$REGEN" -eq 1 ] && "$(dirname $0)/tngen" \
+    ${SIZE:+-s$SIZE} \
+    -d "$DIR" \
+    "$DIR/user"
+
+while :
+do
+    F="$(inotifywait -e modify,move,create,delete \
+        --format "%w%f" -qr "$DIR/user/")"
+    sleep 1 # TODO: revisit this
+    "$(dirname $0)/tngen" \
+        ${SIZE:+-s$SIZE} \
+        -d "$DIR" \
+        "$F"
+done