From 48bf79fa77d1cbbd1ef8e9ad52482654c4bc5128 Mon Sep 17 00:00:00 2001
From: Andros Fenollosa <andros@fenollosa.email>
Date: Sat, 4 Nov 2023 15:03:14 +0100
Subject: [PATCH] Add AVIF

---
 README.md                     | 99 ++++++++++++++++++++++++++++++++++-
 bash-folders-image-to-avif.sh | 93 ++++++++++++++++++++++++++++++++
 2 files changed, 191 insertions(+), 1 deletion(-)
 create mode 100755 bash-folders-image-to-avif.sh

diff --git a/README.md b/README.md
index e6d7175..420a641 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,7 @@ Small collection of Bash scripts to launch functionalities in folders when new f
 
 - [Video optimizer](#video-optimizer): Folder that watches when new videos are added and optimizes them.
 - [Battery hook](#battery-hook): Folder with custom scripts to be launched in different battery states.
+- [Image to avif](#image-to-avif): Folder that watches when new image (PNG, JPEG or WebP) are added and transform to AVIF format.
 - [Image to webp](#image-to-webp): Folder that watches when new image (PNG or JPEG) are added and transform to WebP format.
 
 ---
@@ -215,6 +216,102 @@ Collaborations & Pull Requests
 
 ---
 
+## Image to AVIF
+
+Folder that watches when new image (PNG, JPEG or WebP) are added and transform to AVIF format.
+
+### Requirements
+
+- `avifenc`
+
+Example in Debian.
+
+``` sh
+sudo apt install libavif-bin
+```
+
+### Install
+
+
+``` sh
+curl -o bash-folders-image-to-avif https://raw.githubusercontent.com/tanrax/bash-folders/main/bash-folders-image-to-avif.sh && chmod +x bash-folders-image-to-avif && sudo rm -f /usr/local/bin/bash-folders-image-to-avif && sudo mv bash-folders-image-to-avif /usr/local/bin && echo "🎉 Successfully installed! 🎉"
+```
+
+Test
+
+``` sh
+bash-folders-image-to-avif --help
+```
+
+### Run
+
+``` sh
+bash-folders-image-to-avif --folder [folder to watch]
+```
+
+Example.
+
+``` sh
+mkdir image-to-avif-converter
+bash-folders-image-to-avif --folder image-to-avif-converter
+```
+
+And leave a image that you want to optimize in the folder `image-to-avif-converter`.
+
+---
+
+### Start at operating system startup
+
+#### Option 1: Service
+
+Create a file in `/etc/systemd/system/bash-folders-image-to-avif.service` with the following content.
+
+
+```ini
+[Unit]
+Description=Folder that watches when new image (PNG, JPEG or WebP) are added and transform to AVIF format.
+
+[Service]
+Restart=always
+RestartSec=5
+User=[user]
+ExecStart=bash-folders-image-to-avif --folder [folder to watch]
+
+[Install]
+WantedBy=multi-user.target
+```
+
+Edit it to your needs.
+
+Recharge services.
+
+``` sh
+sudo systemctl daemon-reload
+```
+
+And activate it.
+
+``` sh
+sudo systemctl enable bash-folders-image-to-avif
+sudo systemctl start bash-folders-image-to-avif
+```
+
+#### Option 2: Cron
+
+Open.
+
+``` sh
+crontab -e
+```
+
+Add to document.
+
+``` sh
+@reboot bash-folders-image-to-avif --folder [folder to watch] >/dev/null 2>&1 &
+```
+
+---
+
 ## Image to WebP
 
 Folder that watches when new image (PNG or JPEG) are added and transform to WebP format.
@@ -311,7 +408,7 @@ Add to document.
 
 ## Collaborations & Pull Requests
 
-You must provide the documentation, as well as the scripts present, test that it works well and the script must pass a `shellcheck` (below you will find an example of execution). 
+You must provide the documentation, as well as the scripts present, test that it works well and the script must pass a `shellcheck` (below you will find an example of execution).
 
 ```sh
 shellcheck [script]
diff --git a/bash-folders-image-to-avif.sh b/bash-folders-image-to-avif.sh
new file mode 100755
index 0000000..b1fc82c
--- /dev/null
+++ b/bash-folders-image-to-avif.sh
@@ -0,0 +1,93 @@
+#!/usr/bin/env bash
+
+# --
+# Description: Script that watches when new image (PNG, JPEG or Webp) are added and transform to AVIF format.
+# --
+# Requirements: Install libavif
+# Example Debian: $sudo apt install libavif-bin
+# --
+# Cron: @reboot bash-folders-image-to-avif.sh >/dev/null 2>&1 &
+# --
+
+# START
+set -e
+
+
+# FUNCTIONS
+
+usage() {
+    if [ "$*" != "" ] ; then
+        echo "Error: $*"
+    fi
+
+    cat << EOF
+Usage: $PROGNAME [OPTION]
+Watches when new image (PNG, JPEG or WebP) are added and transform to AVIF format.
+Options:
+--folder [path]  Folder path where will be monitored.
+--help           Display this usage message and exit
+EOF
+
+    exit 1
+}
+
+start() {
+    # Monitors the selected folder
+    inotifywait -m -e create,moved_to --format '%f' "$FOLDER_ORIGIN" |
+	while read -r filename; do
+	    # Gets the file extension
+	    extension="${filename##*.}"
+	    # Checks if the extension is in the extension list
+	    for ext in "${EXTENSIONS_TO_WATCH[@]}"; do
+		if [[ "$ext" = "$extension" ]]; then
+		    filename_output="${filename%.*}.avif"
+		    # Displays a flat file of information
+		    touch "$FOLDER_ORIGIN/$MESSAGE_WAITING"
+		    # Converts the image to WebP
+		    avifenc "$FOLDER_ORIGIN/$filename" "$FOLDER_ORIGIN/$filename_output"
+		    # Remove a flat file of information
+		    rm "$FOLDER_ORIGIN/$MESSAGE_WAITING"
+		fi
+	    done
+	done
+}
+
+
+# CONTROLE ARGUMENTS
+
+# Parse command line arguments
+while [[ $# -gt 0 ]]
+do
+    key="$1"
+    case $key in
+	--folder)
+	    FOLDER_ORIGIN="$2"
+	    shift # past argument
+	    shift # past value
+	    ;;
+	*)
+	    usage "Unknown option: $1"
+	    ;;
+    esac
+done
+
+# VARIABLES
+PROGNAME=$(basename "$0")
+MESSAGE_WAITING="converting_please_wait"
+EXTENSIONS_TO_WATCH=("jpg" "jpeg" "png" "webp")
+
+# CHECKS
+
+# Check if exists cwebp
+if ! which avifenc > /dev/null; then
+    echo "Error: You must install the AVIF terminal tools."
+    exit 1
+fi
+
+# Check if the required --folder flag is provided
+if [ -z "$FOLDER_ORIGIN" ]; then
+    echo "Error: The --folder flag is required."
+    exit 1
+fi
+
+start