feat: enhance logging configuration and add translations for display lines

ipkg/CONTROL/control

@@ -7,5 +7,5 @@ License: GPL-3.0-only
 Section: net
 SourceDateEpoch: 1711267200
 Architecture: all
-Installed-Size:  4362240
+Installed-Size:  4372480
 Description: Advanced HTTP User-Agent Rewriting Tool.

ipkg/CONTROL/control-e

@@ -7,5 +7,5 @@ License: GPL-3.0-only
 Section: net
 SourceDateEpoch: 1711267200
 Architecture: all
-Installed-Size:  4362240
+Installed-Size:  4372480
 Description: Advanced HTTP User-Agent Rewriting Tool.

openwrt/files/luci/cbi.lua

@@ -50,9 +50,12 @@ log_level:value("warn")
 log_level:value("error")
 log_level:value("fatal")
 log_level:value("panic")
+log_level.description = translate(
+    "Sets the logging level. Do not keep the log level set to debug/info/warn for an extended period of time.")
 
 ua = general:taboption("general", Value, "ua", translate("User-Agent"))
 ua.placeholder = "FFF"
+ua.description = translate("User-Agent to be rewritten")
 
 uaRegexPattern = general:taboption("general", Value, "ua_regex", translate("User-Agent Regex Pattern"))
 uaRegexPattern.description = translate("Regular expression pattern for matching User-Agent")
@@ -62,12 +65,37 @@ partialRepalce.description =
     translate("Replace only the matched part of the User-Agent, only works when User-Agent Regex Pattern is not empty")
 partialRepalce.default = "0"
 
-log = general:taboption("log", TextValue, "")
+log = general:taboption("log", TextValue, "log")
 log.readonly = true
-log.cfgvalue = function(self, section)
-    return luci.sys.exec("cat /var/log/ua3f/ua3f.log")
-end
 log.rows = 30
+function log.cfgvalue(self, section)
+    local logfile = "/var/log/ua3f/ua3f.log"
+    local fs = require("nixio.fs")
+    if not fs.access(logfile) then
+        return ""
+    end
+    local n = tonumber(luci.model.uci.cursor():get("ua3f", section, "log_lines")) or 1000
+    return luci.sys.exec("tail -n " .. n .. " " .. logfile)
+end
+
+function log.write(self, section, value) end
+
+function log.render(self, section, scope)
+    TextValue.render(self, section, scope)
+    luci.http.write("<script>")
+    luci.http.write([[
+        var textarea = document.getElementById('cbid.ua3f.main.log');
+        if (textarea) {
+            textarea.scrollTop = textarea.scrollHeight;
+        }
+    ]])
+    luci.http.write("</script>")
+end
+
+logLines = general:taboption("log", Value, "log_lines", translate("Display Lines"))
+logLines.default = "1000"
+logLines.datatype = "uinteger"
+logLines.rmempty = false
 
 stats = general:taboption("stats", DummyValue, "")
 stats.template = "ua3f/statistics"

openwrt/files/ua3f.uci

@@ -8,4 +8,4 @@ config 'ua3f' 'main'
 	option ua 'FFF'
     option ua_regex '(Apple|iPhone|iPad|Macintosh|Mac OS X|Mac|Darwin|Microsoft|Windows|Linux|Android|OpenHarmony|HUAWEI|OPPO|Vivo|XiaoMi|Mobile|Dalvik)'
     option partial_replace false
-    option log_level 'info'
+    option log_level 'error'

openwrt/po/zh_cn/ua3f.po

@@ -76,3 +76,9 @@ msgstr "放行次数"
 
 msgid "Last Host"
 msgstr "最后访问地址"
+
+msgid "Display Lines"
+msgstr "显示行数"
+
+msgid "Sets the logging level. Do not keep the log level set to debug/info/warn for an extended period of time."
+msgstr "设置日志级别，请勿长时间将日志级别设置为 debug / info / warn"