Update luci-theme-argon

luci-theme-argon/root/usr/libexec/argon/online_wallpaper

@@ -0,0 +1,105 @@
+#!/bin/sh
+# author jjm2473
+
+# the script will be excuted when `argon.@global[0].bing_background == '1'`
+# defaults to 'bing' to be compatible with old config
+WEB_PIC_SRC=$(uci -q get argon.@global[0].online_wallpaper || echo 'bing')
+# For now, the next two variables are used for wallhaven.cc with specified Tag ID
+# API_KEY if user has an account with wallhaven and want to use their apikey to allow for more images
+# EXACT_RESO is used for exact resolution by default, if not use 'atleast' instead of 'resolutions'
+API_KEY=$(uci -q get argon.@global[0].use_api_key)
+EXACT_RESO=$(uci -q get argon.@global[0].use_exact_resolution || echo '1')
+CACHE=/var/run/argon_${WEB_PIC_SRC}.url
+WRLOCK=/var/lock/argon_${WEB_PIC_SRC}.lock
+
+fetch_pic_url() {
+    case $WEB_PIC_SRC in
+    bing)
+        local picpath=$(curl -fks --max-time 3 \
+            "https://www.bing.com/HPImageArchive.aspx?format=js&n=1" |
+            jsonfilter -qe '@.images[0].url')
+        [ -n "${picpath}" ] && echo "//www.bing.com${picpath}"
+        ;;
+    unsplash)
+        if [ -z "$API_KEY" ]; then
+            curl -fks --max-time 3 \
+                "https://source.unsplash.com/1920x1080/daily?wallpapers" |
+                sed -E 's#^.*href="([^?]+)\?.*$#\1?fm=jpg\&fit=crop\&w=1920\&h=1080#'
+        else
+            curl -fks --max-time 3 \
+                "https://api.unsplash.com/photos/random?client_id=${API_KEY}" |
+                jsonfilter -qe '@["urls"]["regular"]'
+        fi
+        ;;
+    unsplash_*)
+        local collection_id=${WEB_PIC_SRC#unsplash_}
+        if [ -z "$API_KEY" ]; then
+            curl -fks --max-time 3 \
+                "https://source.unsplash.com/collection/${collection_id}/1920x1080" |
+                sed -E 's#^.*href="([^?]+)\?.*$#\1?fm=jpg\&fit=crop\&w=1920\&h=1080#'
+        else
+            curl -fks --max-time 3 \
+                "https://api.unsplash.com/photos/random?client_id=${API_KEY}&collections=${collection_id}" |
+                jsonfilter -qe '@["urls"]["regular"]'
+        fi
+        ;;
+    wallhaven)
+        curl -fks --max-time 3 \
+            "https://wallhaven.cc/api/v1/search?resolutions=1920x1080&sorting=random" |
+            jsonfilter -qe '@.data[0].path'
+        ;;
+    wallhaven_*)
+        local tag_id=${WEB_PIC_SRC#wallhaven_}
+        local has_api_key=""
+        [ -n "$API_KEY" ] && has_api_key="apikey=$API_KEY&" || has_api_key=""
+        local use_reso="resolutions"
+        [ "$EXACT_RESO" -eq "1" ] && use_reso='resolutions' || use_reso='atleast'
+        curl -fks --max-time 3 \
+            "https://wallhaven.cc/api/v1/search?${has_api_key}q=id%3A${tag_id}&${use_reso}=1920x1080&sorting=random" |
+            jsonfilter -qe '@.data[0].path'
+        ;;
+    esac
+}
+
+try_update() {
+    local lock="$WRLOCK"
+    exec 200>$lock
+
+    if flock -n 200 >/dev/null 2>&1; then
+        local picurl=$(fetch_pic_url)
+        if [[ "$WEB_PIC_SRC" == wallhave* ]] ; then
+            curl -fks --max-time 3 --url "${picurl}" > /dev/null
+        fi
+        if [ -n "$picurl" ]; then
+            echo "${picurl}" | tee "$CACHE"
+        else
+            if [ -s "$CACHE" ]; then
+                cat "$CACHE"
+            else
+                touch "$CACHE"
+            fi
+        fi
+        flock -u 200 >/dev/null 2>&1
+    elif [ -s "$CACHE" ]; then
+        cat "$CACHE"
+    fi
+}
+
+get_url() {
+    if [ -f "$CACHE" ]; then
+        local idle_t=$(($(date '+%s') - $(date -r "$CACHE" '+%s' 2>/dev/null || echo '0')))
+        if [ -s "$CACHE" ]; then
+            if [ $idle_t -le 43200 ]; then
+                cat "$CACHE"
+                return
+            fi
+        else
+            if [ $idle_t -le 120 ]; then
+                return
+            fi
+        fi
+    fi
+    try_update
+}
+
+get_url