From 75feb614e604b2f584872bfbc04ffa65c2b0b0f0 Mon Sep 17 00:00:00 2001
From: grimsi <9295182+grimsi@users.noreply.github.com>
Date: Fri, 20 Sep 2024 12:23:34 +0200
Subject: [PATCH] Implement push-based log view Various layout fixes

---
 .gitignore                                    |   1 +
 .run/UI debug.run.xml                         |   2 +-
 build.gradle.kts                              |  10 +-
 .../administration/LogManagement.tsx          |  92 +++++++++++++++
 .../administration/withConfigPage.tsx         |  10 +-
 .../components/general/CheckboxInput.tsx      |   2 +-
 .../frontend/components/general/Input.tsx     |   2 +-
 .../components/general/SelectInput.tsx        |   5 +-
 .../components/general/withSideMenu.tsx       |   2 +-
 src/main/frontend/index.html                  |   2 +-
 src/main/frontend/routes.tsx                  |   4 +-
 .../frontend/views/AdministrationView.tsx     |   7 +-
 src/main/frontend/views/MainLayout.tsx        |  25 ++---
 .../gameyfin/config/ConfigProperties.kt       |  28 ++++-
 .../grimsi/gameyfin/core/SetupDataLoader.kt   |   4 +
 .../gameyfin/core/security/SecurityConfig.kt  |   2 +-
 .../SsoAuthenticationSuccessHandler.kt        |   4 +-
 .../de/grimsi/gameyfin/logs/LogEndpoint.kt    |  25 +++++
 .../de/grimsi/gameyfin/logs/LogService.kt     | 105 ++++++++++++++++++
 .../grimsi/gameyfin/logs/dto/LogConfigDto.kt  |   9 ++
 .../grimsi/gameyfin/system/SystemService.kt   |  11 ++
 src/main/resources/application.yml            |   1 -
 src/main/resources/log-config-template.xml    |  21 ++++
 23 files changed, 341 insertions(+), 33 deletions(-)
 create mode 100644 src/main/frontend/components/administration/LogManagement.tsx
 create mode 100644 src/main/kotlin/de/grimsi/gameyfin/logs/LogEndpoint.kt
 create mode 100644 src/main/kotlin/de/grimsi/gameyfin/logs/LogService.kt
 create mode 100644 src/main/kotlin/de/grimsi/gameyfin/logs/dto/LogConfigDto.kt
 create mode 100644 src/main/resources/log-config-template.xml

diff --git a/.gitignore b/.gitignore
index a874266..d2f1769 100644
--- a/.gitignore
+++ b/.gitignore
@@ -47,3 +47,4 @@ out/
 /.gameyfin/
 /src/main/frontend/generated/
 /db/
+/logs/
diff --git a/.run/UI debug.run.xml b/.run/UI debug.run.xml
index ccfbe55..1a2afd9 100644
--- a/.run/UI debug.run.xml	
+++ b/.run/UI debug.run.xml	
@@ -1,5 +1,5 @@
 <component name="ProjectRunConfigurationManager">
-  <configuration default="false" name="UI debug" type="JavascriptDebugType" engineId="37cae5b9-e8b2-4949-9172-aafa37fbc09c" uri="http://localhost:8080">
+  <configuration default="false" name="UI debug" type="JavascriptDebugType" uri="http://localhost:8080">
     <method v="2" />
   </configuration>
 </component>
\ No newline at end of file
diff --git a/build.gradle.kts b/build.gradle.kts
index 63857ed..be69f79 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -41,6 +41,11 @@ dependencies {
     implementation("jakarta.validation:jakarta.validation-api:3.0.2")
     implementation("org.jetbrains.kotlin:kotlin-reflect")
 
+    // Reactive
+    implementation("org.springframework.boot:spring-boot-starter-webflux")
+    implementation("io.projectreactor.kotlin:reactor-kotlin-extensions")
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-reactor")
+
     // Vaadin Hilla
     implementation("com.vaadin:vaadin-core") {
         exclude("com.vaadin:flow-react")
@@ -50,10 +55,11 @@ dependencies {
     // Logging
     implementation("io.github.oshai:kotlin-logging-jvm:6.0.3")
 
-    // Persistence
+    // Persistence & I/O
     implementation("org.springframework.boot:spring-boot-starter-data-jpa")
     implementation("com.github.paulcwarren:spring-content-fs-boot-starter:3.0.14")
     implementation("org.springframework.cloud:spring-cloud-starter")
+    implementation("commons-io:commons-io:2.16.1")
 
     // SSO
     implementation("org.springframework.boot:spring-boot-starter-oauth2-client")
@@ -62,7 +68,7 @@ dependencies {
 
     // Notifications
     implementation("org.springframework.boot:spring-boot-starter-mail")
-    
+
     // Development
     developmentOnly("org.springframework.boot:spring-boot-devtools")
     annotationProcessor("org.springframework.boot:spring-boot-configuration-processor")
diff --git a/src/main/frontend/components/administration/LogManagement.tsx b/src/main/frontend/components/administration/LogManagement.tsx
new file mode 100644
index 0000000..c1d4e58
--- /dev/null
+++ b/src/main/frontend/components/administration/LogManagement.tsx
@@ -0,0 +1,92 @@
+import React, {useEffect, useRef, useState} from "react";
+import {LogEndpoint} from "Frontend/generated/endpoints";
+import withConfigPage from "Frontend/components/administration/withConfigPage";
+import * as Yup from 'yup';
+import ConfigFormField from "Frontend/components/administration/ConfigFormField";
+import {toast} from "sonner";
+import {Button, Code, Divider, Tooltip} from "@nextui-org/react";
+import {ArrowUDownLeft, SortAscending} from "@phosphor-icons/react";
+
+function LogManagementLayout({getConfig, formik}: any) {
+
+    const [logEntries, setLogEntries] = useState<string[]>([]);
+    const [autoScroll, setAutoScroll] = useState(true);
+    const [softWrap, setSoftWrap] = useState(false);
+    const subscribed = useRef(false);
+    const logEndRef = useRef<null | HTMLDivElement>(null);
+
+    useEffect(() => {
+        if (subscribed.current) return;
+        LogEndpoint.getApplicationLogs().onNext((newEntry: string | undefined) =>
+            setLogEntries((currentEntries) => [...currentEntries, newEntry as string])
+        );
+        subscribed.current = true;
+    }, []);
+
+    useEffect(() => {
+        if (formik.isSubmitting == false && formik.submitCount > 0) {
+            LogEndpoint.reloadLogConfig()
+                .catch(() => toast.error("Failed to apply log configuration"));
+        }
+    }, [formik.isSubmitting]);
+
+    useEffect(() => {
+        if (autoScroll) {
+            scrollToBottom();
+        }
+    }, [logEntries, autoScroll, softWrap]);
+
+    function scrollToBottom() {
+        logEndRef.current?.scrollIntoView();
+    }
+
+    return (
+        <div className="flex flex-col">
+            <div className="flex flex-row gap-4">
+                <ConfigFormField configElement={getConfig("logs.folder")}/>
+                <ConfigFormField configElement={getConfig("logs.max-history-days")}/>
+                <ConfigFormField configElement={getConfig("logs.level")}/>
+            </div>
+
+            <div className="flex flex-col">
+                <div className="flex flex-row flex-grow justify-between items-baseline">
+                    <h2 className={"text-xl font-bold mt-8 mb-1"}>Application logs</h2>
+                    <div className="flex flex-row gap-1">
+                        <Tooltip content="Soft-wrap" placement="bottom">
+                            <Button isIconOnly
+                                    onPress={() => setSoftWrap(!softWrap)}
+                                    variant={softWrap ? "solid" : "ghost"}
+                            >
+                                <ArrowUDownLeft/>
+                            </Button>
+                        </Tooltip>
+                        <Tooltip content="Auto-scroll" placement="bottom">
+                            <Button isIconOnly
+                                    onPress={() => setAutoScroll(!autoScroll)}
+                                    variant={autoScroll ? "solid" : "ghost"}
+                            >
+                                <SortAscending/>
+                            </Button>
+                        </Tooltip>
+                    </div>
+                </div>
+                <Divider className="mb-4"/>
+            </div>
+            <Code size="sm" radius="none"
+                  className={`flex flex-col h-[50vh] max-h-[50vh] text-sm overflow-auto ${softWrap ? "whitespace-normal" : "whitespace-nowrap"}`}>
+                {logEntries.map((entry, index) => <p key={index}>{entry}</p>)}
+                <div ref={logEndRef}/>
+            </Code>
+        </div>
+    );
+}
+
+const validationSchema = Yup.object({
+    logs: Yup.object({
+        folder: Yup.string().required("Required"),
+        "max-history-days": Yup.number().required("Required"),
+        level: Yup.string().required("Required")
+    })
+});
+
+export const LogManagement = withConfigPage(LogManagementLayout, "Logging", "logs", validationSchema);
\ No newline at end of file
diff --git a/src/main/frontend/components/administration/withConfigPage.tsx b/src/main/frontend/components/administration/withConfigPage.tsx
index 7b219b8..a879df4 100644
--- a/src/main/frontend/components/administration/withConfigPage.tsx
+++ b/src/main/frontend/components/administration/withConfigPage.tsx
@@ -16,11 +16,13 @@ export default function withConfigPage(WrappedComponent: React.ComponentType<any
         const isInitialized = useRef(false);
         const [configSaved, setConfigSaved] = useState(false);
         const [configDtos, setConfigDtos] = useState<ConfigEntryDto[]>([]);
+        const [nestedConfigDtos, setNestedConfigDtos] = useState<NestedConfig>({});
         const [saveMessage, setSaveMessage] = useState<string>();
 
         useEffect(() => {
             ConfigEndpoint.getAll(configPrefix).then((response: any) => {
                 setConfigDtos(response as ConfigEntryDto[]);
+                setNestedConfigDtos(toNestedConfig(response as ConfigEntryDto[]));
                 isInitialized.current = true;
             });
         }, []);
@@ -34,6 +36,7 @@ export default function withConfigPage(WrappedComponent: React.ComponentType<any
         async function handleSubmit(values: NestedConfig) {
             const configValues = toConfigValuePair(values);
             await ConfigEndpoint.setAll(configValues);
+            setNestedConfigDtos(values);
             setConfigSaved(true);
         }
 
@@ -114,11 +117,12 @@ export default function withConfigPage(WrappedComponent: React.ComponentType<any
 
         return (
             <Formik
-                initialValues={toNestedConfig(configDtos)}
+                initialValues={nestedConfigDtos}
                 onSubmit={handleSubmit}
                 validationSchema={validationSchema}
+                enableReinitialize={true}
             >
-                {(formik: { values: any; isSubmitting: any; }) => (
+                {(formik) => (
                     <Form>
                         <div className="flex flex-row flex-grow justify-between mb-8">
                             <h1 className="text-2xl font-bold">{title}</h1>
@@ -131,7 +135,7 @@ export default function withConfigPage(WrappedComponent: React.ComponentType<any
                                 <Button
                                     color="primary"
                                     isLoading={formik.isSubmitting}
-                                    disabled={formik.isSubmitting || configSaved}
+                                    disabled={formik.isSubmitting || configSaved || !formik.dirty}
                                     type="submit"
                                 >
                                     {formik.isSubmitting ? "" : configSaved ? <Check/> : "Save"}
diff --git a/src/main/frontend/components/general/CheckboxInput.tsx b/src/main/frontend/components/general/CheckboxInput.tsx
index 34f1859..0dce16b 100644
--- a/src/main/frontend/components/general/CheckboxInput.tsx
+++ b/src/main/frontend/components/general/CheckboxInput.tsx
@@ -7,7 +7,7 @@ const CheckboxInput = ({label, ...props}) => {
     const [field] = useField(props);
 
     return (
-        <div className="flex flex-row flex-grow items-center gap-2 my-2">
+        <div className="flex flex-row flex-1 items-center gap-2 my-2">
             <Checkbox
                 {...field}
                 {...props}
diff --git a/src/main/frontend/components/general/Input.tsx b/src/main/frontend/components/general/Input.tsx
index b2b8b96..ba0657f 100644
--- a/src/main/frontend/components/general/Input.tsx
+++ b/src/main/frontend/components/general/Input.tsx
@@ -9,7 +9,7 @@ const Input = ({label, ...props}) => {
     const [field, meta] = useField(props);
 
     return (
-        <div className="flex flex-col w-full items-start gap-2 my-2">
+        <div className="flex flex-col flex-1 items-start gap-2 my-2">
             <NextUiInput
                 {...props}
                 {...field}
diff --git a/src/main/frontend/components/general/SelectInput.tsx b/src/main/frontend/components/general/SelectInput.tsx
index f97a398..0851e3a 100644
--- a/src/main/frontend/components/general/SelectInput.tsx
+++ b/src/main/frontend/components/general/SelectInput.tsx
@@ -7,17 +7,18 @@ const SelectInput = ({label, values, ...props}) => {
     const [field] = useField(props);
 
     return (
-        <div className="flex flex-row flex-1 items-center gap-2 my-2">
+        <div className="flex flex-row flex-1 justify-center gap-2 my-2">
             <Select
                 {...field}
                 {...props}
                 id={field.name}
                 label={label}
                 defaultSelectedKeys={[field.value]}
+                disallowEmptySelection
             >
                 {values.map((value: string) => (
                     <SelectItem key={value} value={value}>
-                        {value.toLowerCase()}
+                        {value}
                     </SelectItem>
                 ))}
             </Select>
diff --git a/src/main/frontend/components/general/withSideMenu.tsx b/src/main/frontend/components/general/withSideMenu.tsx
index b4f200e..2d9ac9a 100644
--- a/src/main/frontend/components/general/withSideMenu.tsx
+++ b/src/main/frontend/components/general/withSideMenu.tsx
@@ -51,7 +51,7 @@ export default function withSideMenu(menuItems: MenuItem[]) {
                         ))}
                     </Listbox>
                 </div>
-                <div className="flex flex-col flex-grow">
+                <div className="flex-1 overflow-auto">
                     <Outlet/>
                 </div>
             </div>
diff --git a/src/main/frontend/index.html b/src/main/frontend/index.html
index b4941f0..cf58aea 100644
--- a/src/main/frontend/index.html
+++ b/src/main/frontend/index.html
@@ -2,7 +2,7 @@
 <html lang="en">
 <head>
     <meta charset="UTF-8"/>
-    <meta name="viewport" content="width=device-width, initial-scale=1"/>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
     <title>Gameyfin</title>
     <style>
         body {
diff --git a/src/main/frontend/routes.tsx b/src/main/frontend/routes.tsx
index 95c53b9..e198f76 100644
--- a/src/main/frontend/routes.tsx
+++ b/src/main/frontend/routes.tsx
@@ -13,6 +13,7 @@ import {SsoManagement} from "Frontend/components/administration/SsoManagement";
 import {AdministrationView} from "Frontend/views/AdministrationView";
 import {ProfileView} from "Frontend/views/ProfileView";
 import {NotificationManagement} from "Frontend/components/administration/NotificationManagement";
+import {LogManagement} from "Frontend/components/administration/LogManagement";
 
 export const routes = protectRoutes([
     {
@@ -41,7 +42,8 @@ export const routes = protectRoutes([
                             {path: 'libraries', element: <LibraryManagement/>},
                             {path: 'users', element: <UserManagement/>},
                             {path: 'sso', element: <SsoManagement/>},
-                            {path: 'notifications', element: <NotificationManagement/>}
+                            {path: 'notifications', element: <NotificationManagement/>},
+                            {path: 'logs', element: <LogManagement/>}
                         ]
                     }
                 ]
diff --git a/src/main/frontend/views/AdministrationView.tsx b/src/main/frontend/views/AdministrationView.tsx
index b952745..b4109c3 100644
--- a/src/main/frontend/views/AdministrationView.tsx
+++ b/src/main/frontend/views/AdministrationView.tsx
@@ -1,4 +1,4 @@
-import {Envelope, GameController, LockKey, Users} from "@phosphor-icons/react";
+import {Envelope, GameController, LockKey, Log, Users} from "@phosphor-icons/react";
 import withSideMenu, {MenuItem} from "Frontend/components/general/withSideMenu";
 
 const menuItems: MenuItem[] = [
@@ -21,6 +21,11 @@ const menuItems: MenuItem[] = [
         title: "Notifications",
         url: "notifications",
         icon: <Envelope/>
+    },
+    {
+        title: "Logs",
+        url: "logs",
+        icon: <Log/>
     }
 ]
 
diff --git a/src/main/frontend/views/MainLayout.tsx b/src/main/frontend/views/MainLayout.tsx
index 5362013..10f8507 100644
--- a/src/main/frontend/views/MainLayout.tsx
+++ b/src/main/frontend/views/MainLayout.tsx
@@ -15,25 +15,24 @@ export default function MainLayout() {
 
     return (
         <div className="flex flex-col min-h-svh">
-            <Navbar maxWidth="2xl" className="shadow">
-                <NavbarBrand as="button" onClick={() => navigate('/')}>
-                    <GameyfinLogo className="h-10 fill-foreground"/>
-                </NavbarBrand>
-                <NavbarContent justify="end">
-                    <NavbarItem>
-                        <ProfileMenu/>
-                    </NavbarItem>
-                </NavbarContent>
-            </Navbar>
+            <div className="flex flex-col flex-grow w-full 2xl:w-3/4 m-auto">
+                <Navbar maxWidth="full">
+                    <NavbarBrand as="button" onClick={() => navigate('/')}>
+                        <GameyfinLogo className="h-10 fill-foreground"/>
+                    </NavbarBrand>
+                    <NavbarContent justify="end">
+                        <NavbarItem>
+                            <ProfileMenu/>
+                        </NavbarItem>
+                    </NavbarContent>
+                </Navbar>
 
-            <div className="flex-1">
-                <div className="flex-row relative m-auto max-w-[1536px] align-self-center px-2 pt-4">
+                <div className="w-full overflow-hidden ml-2 pr-8 mt-4">
                     <Outlet/>
                 </div>
             </div>
 
             <Divider/>
-
             <footer className="flex flex-row items-center justify-between py-4 px-12">
                 <p>Gameyfin {PackageJson.version}</p>
                 <p>
diff --git a/src/main/kotlin/de/grimsi/gameyfin/config/ConfigProperties.kt b/src/main/kotlin/de/grimsi/gameyfin/config/ConfigProperties.kt
index 2e4866a..116dfa2 100644
--- a/src/main/kotlin/de/grimsi/gameyfin/config/ConfigProperties.kt
+++ b/src/main/kotlin/de/grimsi/gameyfin/config/ConfigProperties.kt
@@ -1,5 +1,6 @@
 package de.grimsi.gameyfin.config
 
+import org.springframework.boot.logging.LogLevel
 import java.io.Serializable
 import kotlin.reflect.KClass
 
@@ -115,7 +116,7 @@ sealed class ConfigProperties<T : Serializable>(
         MatchUsersBy::class,
         "sso.oidc.match-existing-users-by",
         "Match existing users by",
-        MatchUsersBy.USERNAME,
+        MatchUsersBy.username,
         MatchUsersBy.entries
     )
 
@@ -158,8 +159,31 @@ sealed class ConfigProperties<T : Serializable>(
         "notifications.email.password",
         "Password for the email account"
     )
+
+    /** Logs */
+    data object LogsFolder : ConfigProperties<String>(
+        String::class,
+        "logs.folder",
+        "Storage folder for log files",
+        "./logs"
+    )
+
+    data object LogsMaxHistoryDays : ConfigProperties<Int>(
+        Int::class,
+        "logs.max-history-days",
+        "Log retention in days",
+        30
+    )
+
+    data object LogsLevel : ConfigProperties<LogLevel>(
+        LogLevel::class,
+        "logs.level",
+        "Log level",
+        LogLevel.INFO,
+        LogLevel.entries
+    )
 }
 
 enum class MatchUsersBy {
-    USERNAME, EMAIL
+    username, email
 }
\ No newline at end of file
diff --git a/src/main/kotlin/de/grimsi/gameyfin/core/SetupDataLoader.kt b/src/main/kotlin/de/grimsi/gameyfin/core/SetupDataLoader.kt
index 44e010c..2c54f83 100644
--- a/src/main/kotlin/de/grimsi/gameyfin/core/SetupDataLoader.kt
+++ b/src/main/kotlin/de/grimsi/gameyfin/core/SetupDataLoader.kt
@@ -1,5 +1,6 @@
 package de.grimsi.gameyfin.core
 
+import de.grimsi.gameyfin.setup.SetupService
 import de.grimsi.gameyfin.users.UserService
 import de.grimsi.gameyfin.users.entities.Role
 import de.grimsi.gameyfin.users.entities.User
@@ -18,12 +19,15 @@ import java.net.InetAddress
 class SetupDataLoader(
     private val roleRepository: RoleRepository,
     private val userService: UserService,
+    private val setupService: SetupService,
     private val env: Environment
 ) {
     private val log = KotlinLogging.logger {}
 
     @EventListener(ApplicationReadyEvent::class)
     fun initialSetup() {
+        if (setupService.isSetupCompleted()) return
+
         log.info { "Looks like this is the first time you're starting Gameyfin." }
         log.info { "We will now set up some data..." }
 
diff --git a/src/main/kotlin/de/grimsi/gameyfin/core/security/SecurityConfig.kt b/src/main/kotlin/de/grimsi/gameyfin/core/security/SecurityConfig.kt
index 1553fcc..e8a9934 100644
--- a/src/main/kotlin/de/grimsi/gameyfin/core/security/SecurityConfig.kt
+++ b/src/main/kotlin/de/grimsi/gameyfin/core/security/SecurityConfig.kt
@@ -56,7 +56,7 @@ class SecurityConfig(
             // Prevent unnecessary redirects
             http.logout { logout -> logout.logoutSuccessHandler((HttpStatusReturningLogoutSuccessHandler(HttpStatus.OK))) }
         } else {
-            setLoginView(http, "/login")
+            setLoginView(http, "/login", "/")
         }
     }
 
diff --git a/src/main/kotlin/de/grimsi/gameyfin/core/security/SsoAuthenticationSuccessHandler.kt b/src/main/kotlin/de/grimsi/gameyfin/core/security/SsoAuthenticationSuccessHandler.kt
index 22bc04b..2573966 100644
--- a/src/main/kotlin/de/grimsi/gameyfin/core/security/SsoAuthenticationSuccessHandler.kt
+++ b/src/main/kotlin/de/grimsi/gameyfin/core/security/SsoAuthenticationSuccessHandler.kt
@@ -34,8 +34,8 @@ class SsoAuthenticationSuccessHandler(
         // This is meant to map existing users to SSO users
         if (matchedUser == null) {
             matchedUser = when (config.get(ConfigProperties.SsoMatchExistingUsersBy)) {
-                MatchUsersBy.USERNAME -> userService.getByUsername(oidcUser.preferredUsername)
-                MatchUsersBy.EMAIL -> userService.getByEmail(oidcUser.email)
+                MatchUsersBy.username -> userService.getByUsername(oidcUser.preferredUsername)
+                MatchUsersBy.email -> userService.getByEmail(oidcUser.email)
                 else -> throw IllegalStateException("Unknown 'match users by' configuration")
             }
         }
diff --git a/src/main/kotlin/de/grimsi/gameyfin/logs/LogEndpoint.kt b/src/main/kotlin/de/grimsi/gameyfin/logs/LogEndpoint.kt
new file mode 100644
index 0000000..d78af02
--- /dev/null
+++ b/src/main/kotlin/de/grimsi/gameyfin/logs/LogEndpoint.kt
@@ -0,0 +1,25 @@
+package de.grimsi.gameyfin.logs
+
+import com.vaadin.flow.server.auth.AnonymousAllowed
+import com.vaadin.hilla.Endpoint
+import de.grimsi.gameyfin.core.Roles
+import jakarta.annotation.security.RolesAllowed
+import reactor.core.publisher.Flux
+
+@Endpoint
+@RolesAllowed(Roles.Names.SUPERADMIN, Roles.Names.ADMIN)
+class LogEndpoint(
+    private val logService: LogService
+) {
+
+    fun reloadLogConfig() {
+        logService.configureFileLogging()
+    }
+
+    // FIXME: see https://vaadin.com/forum/t/can-only-access-flux-endpoint-with-anonymousallowed/167117
+    @AnonymousAllowed
+    fun getApplicationLogs(): Flux<String> {
+        return logService.getInitialLogs()
+            .concatWith(logService.streamLogs())
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/de/grimsi/gameyfin/logs/LogService.kt b/src/main/kotlin/de/grimsi/gameyfin/logs/LogService.kt
new file mode 100644
index 0000000..95eb216
--- /dev/null
+++ b/src/main/kotlin/de/grimsi/gameyfin/logs/LogService.kt
@@ -0,0 +1,105 @@
+package de.grimsi.gameyfin.logs
+
+import ch.qos.logback.classic.LoggerContext
+import ch.qos.logback.classic.joran.JoranConfigurator
+import de.grimsi.gameyfin.config.ConfigProperties
+import de.grimsi.gameyfin.config.ConfigService
+import io.github.oshai.kotlinlogging.KotlinLogging
+import org.apache.commons.io.input.Tailer
+import org.apache.commons.io.input.TailerListenerAdapter
+import org.slf4j.LoggerFactory
+import org.springframework.boot.context.event.ApplicationStartedEvent
+import org.springframework.boot.logging.LogLevel
+import org.springframework.context.event.EventListener
+import org.springframework.stereotype.Service
+import reactor.core.publisher.Flux
+import reactor.core.publisher.Sinks
+import java.io.InputStream
+import java.nio.file.Files
+import java.nio.file.Path
+import java.nio.file.Paths
+import java.time.Duration
+
+@Service
+class LogService(
+    private val config: ConfigService
+) {
+
+    companion object {
+        private const val LOG_CONFIG_TEMPLATE = "log-config-template.xml"
+        private const val LOG_FILE_NAME = "gameyfin"
+        private val LOG_REFRESH_INTERVAL = Duration.ofSeconds(5)
+    }
+
+    private val log = KotlinLogging.logger {}
+
+    private var logFilePath: Path = Paths.get(config.get(ConfigProperties.LogsFolder)!!, "$LOG_FILE_NAME.log")
+
+    private val sink: Sinks.Many<String> = Sinks.many().multicast().onBackpressureBuffer()
+
+    @EventListener(ApplicationStartedEvent::class)
+    fun configureFileLogging() {
+        return configureFileLogging(
+            config.get(ConfigProperties.LogsFolder)!!,
+            config.get(ConfigProperties.LogsMaxHistoryDays)!!,
+            config.get(ConfigProperties.LogsLevel)!!
+        )
+    }
+
+    init {
+        val tailer = Tailer.builder()
+            .setFile(logFilePath.toFile())
+            .setTailerListener(object : TailerListenerAdapter() {
+                override fun handle(line: String) {
+                    sink.tryEmitNext(line)
+                }
+            })
+            .setDelayDuration(LOG_REFRESH_INTERVAL)
+            .setTailFromEnd(true)
+            .get()
+
+        Thread(tailer).start()
+    }
+
+    fun configureFileLogging(folder: String, maxHistoryDays: Int, level: LogLevel) {
+        val context = LoggerFactory.getILoggerFactory() as LoggerContext
+        val configurator = JoranConfigurator()
+        configurator.context = context
+        context.reset()
+
+        generateLogConfigXml(folder.removeSuffix("/"), maxHistoryDays, level).use {
+            log.info { "Setting log level to $level" }
+            log.info { "Setting log retention to $maxHistoryDays days" }
+            configurator.doConfigure(it)
+            logFilePath = Paths.get(config.get(ConfigProperties.LogsFolder)!!, "$LOG_FILE_NAME.log")
+        }
+    }
+
+    fun streamLogs(): Flux<String> {
+        return sink.asFlux()
+    }
+
+    fun getInitialLogs(): Flux<String> {
+        return Flux.fromStream(Files.lines(logFilePath))
+    }
+
+    private fun generateLogConfigXml(
+        folder: String,
+        maxHistoryDays: Int,
+        level: LogLevel
+    ): InputStream {
+        val template = javaClass.classLoader.getResourceAsStream(LOG_CONFIG_TEMPLATE)
+
+        if (template == null) {
+            throw IllegalStateException("Log config template not found")
+        }
+
+        val templateString = template.bufferedReader().use { it.readText() }
+        return templateString
+            .replace("{LOG_FOLDER}", folder)
+            .replace("{LOG_FILE_NAME}", LOG_FILE_NAME)
+            .replace("{LOG_MAX_HISTORY_DAYS}", maxHistoryDays.toString())
+            .replace("{LOG_LEVEL}", level.toString())
+            .byteInputStream()
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/de/grimsi/gameyfin/logs/dto/LogConfigDto.kt b/src/main/kotlin/de/grimsi/gameyfin/logs/dto/LogConfigDto.kt
new file mode 100644
index 0000000..8759d0c
--- /dev/null
+++ b/src/main/kotlin/de/grimsi/gameyfin/logs/dto/LogConfigDto.kt
@@ -0,0 +1,9 @@
+package de.grimsi.gameyfin.logs.dto
+
+import org.springframework.boot.logging.LogLevel
+
+data class LogConfigDto(
+    val logFolder: String,
+    val maxHistoryDays: Int,
+    val logLevel: LogLevel
+)
diff --git a/src/main/kotlin/de/grimsi/gameyfin/system/SystemService.kt b/src/main/kotlin/de/grimsi/gameyfin/system/SystemService.kt
index 90ee884..e391a7e 100644
--- a/src/main/kotlin/de/grimsi/gameyfin/system/SystemService.kt
+++ b/src/main/kotlin/de/grimsi/gameyfin/system/SystemService.kt
@@ -7,7 +7,18 @@ import org.springframework.stereotype.Service
 class SystemService(
     private val restartEndpoint: RestartEndpoint,
 ) {
+
+    private var restartRequired = false;
+
     fun restart() {
         restartEndpoint.restart()
     }
+
+    fun setRestartRequired() {
+        restartRequired = true
+    }
+
+    fun isRestartRequired(): Boolean {
+        return restartRequired
+    }
 }
\ No newline at end of file
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 67cb412..bb16df1 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -8,7 +8,6 @@ server:
       tracking-modes: cookie
 
 management:
-  endpoints.web.exposure.include: '*'
   endpoint:
     pause:
       enabled: false
diff --git a/src/main/resources/log-config-template.xml b/src/main/resources/log-config-template.xml
new file mode 100644
index 0000000..3041e74
--- /dev/null
+++ b/src/main/resources/log-config-template.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <include resource="org/springframework/boot/logging/logback/defaults.xml"/>
+    <include resource="org/springframework/boot/logging/logback/console-appender.xml"/>
+
+    <!-- Custom File Appender -->
+    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
+        <file>{LOG_FOLDER}/{LOG_FILE_NAME}.log</file>
+        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
+            <fileNamePattern>{LOG_FOLDER}/{LOG_FILE_NAME}.%d{yyyy-MM-dd}.log</fileNamePattern>
+            <maxHistory>{LOG_MAX_HISTORY_DAYS}</maxHistory>
+        </rollingPolicy>
+        <encoder>
+            <pattern>%d{yyy-MM-dd'T'HH:mm:ss.SSS} %-5level %-40.40logger{39} : %m%n</pattern>
+        </encoder>
+    </appender>
+    <root level="{LOG_LEVEL}">
+        <appender-ref ref="CONSOLE"/>
+        <appender-ref ref="FILE"/>
+    </root>
+</configuration>
\ No newline at end of file