[#1349] Basic Cookie Authentication (#1498)

* [#1349] Stub basic cookie authentication

* [#1349] Basic login page

Also adjusts WebView header color and shadow to match WebUI. WebUI uses
a background-image gradient to change the perceived color, which was not
noticed originally.

* [#1349] Handle login post

* [#1349] Redirect to previous URL

* [#1349] Return a basic 401 for api endpoints

Instead of redirecting to a visual login page, API should just indicate
the bad state

* Use more appropriate 303 redirect

* Update server/src/main/kotlin/suwayomi/tachidesk/server/JavalinSetup.kt

Co-authored-by: Mitchell Syer <Syer10@users.noreply.github.com>

* Update server/src/main/kotlin/suwayomi/tachidesk/server/JavalinSetup.kt

Co-authored-by: Mitchell Syer <Syer10@users.noreply.github.com>

* Lint

* Transition to AuthMode enum with migration path

* Make basicAuthEnabled auto property, Lint

* ConfigManager: Make sure to re-parse the config after migration

* basicAuth{Username,Password} -> auth{Username,Password}

* Lint

* Update server settings backup model

* Update comment

* Minor cleanup

* Improve backup legacy settings fix

* Lint

* Simplify config value migration

---------

Co-authored-by: Mitchell Syer <Syer10@users.noreply.github.com>

server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/SettingsMutation.kt

@@ -155,6 +155,9 @@ class SettingsMutation {
         updateSetting(settings.updateMangas, serverConfig.updateMangas)
 
         // Authentication
+        updateSetting(settings.authMode, serverConfig.authMode)
+        updateSetting(settings.authUsername, serverConfig.authUsername)
+        updateSetting(settings.authPassword, serverConfig.authPassword)
         updateSetting(settings.basicAuthEnabled, serverConfig.basicAuthEnabled)
         updateSetting(settings.basicAuthUsername, serverConfig.basicAuthUsername)
         updateSetting(settings.basicAuthPassword, serverConfig.basicAuthPassword)

server/src/main/kotlin/suwayomi/tachidesk/graphql/types/AuthMode.kt

@@ -0,0 +1,13 @@
+package suwayomi.tachidesk.graphql.types
+
+enum class AuthMode {
+    NONE,
+    BASIC_AUTH,
+    SIMPLE_LOGIN,
+    // TODO: ACCOUNT for #623
+    ;
+
+    companion object {
+        fun from(channel: String): AuthMode = entries.find { it.name.lowercase() == channel.lowercase() } ?: NONE
+    }
+}

server/src/main/kotlin/suwayomi/tachidesk/graphql/types/SettingsType.kt

@@ -63,8 +63,17 @@ interface Settings : Node {
     val updateMangas: Boolean?
 
     // Authentication
+    val authMode: AuthMode?
+    val authUsername: String?
+    val authPassword: String?
+
+    @GraphQLDeprecated("Removed - prefer authMode")
     val basicAuthEnabled: Boolean?
+
+    @GraphQLDeprecated("Removed - prefer authUsername")
     val basicAuthUsername: String?
+
+    @GraphQLDeprecated("Removed - prefer authPassword")
     val basicAuthPassword: String?
 
     // misc
@@ -144,8 +153,14 @@ data class PartialSettingsType(
     override val globalUpdateInterval: Double?,
     override val updateMangas: Boolean?,
     // Authentication
+    override val authMode: AuthMode?,
+    override val authUsername: String?,
+    override val authPassword: String?,
+    @GraphQLDeprecated("Removed - prefer authMode")
     override val basicAuthEnabled: Boolean?,
+    @GraphQLDeprecated("Removed - prefer authUsername")
     override val basicAuthUsername: String?,
+    @GraphQLDeprecated("Removed - prefer authPassword")
     override val basicAuthPassword: String?,
     // misc
     override val debugLogsEnabled: Boolean?,
@@ -219,8 +234,14 @@ class SettingsType(
     override val globalUpdateInterval: Double,
     override val updateMangas: Boolean,
     // Authentication
+    override val authMode: AuthMode,
+    override val authUsername: String,
+    override val authPassword: String,
+    @GraphQLDeprecated("Removed - prefer authMode")
     override val basicAuthEnabled: Boolean,
+    @GraphQLDeprecated("Removed - prefer authUsername")
     override val basicAuthUsername: String,
+    @GraphQLDeprecated("Removed - prefer authPassword")
     override val basicAuthPassword: String,
     // misc
     override val debugLogsEnabled: Boolean,
@@ -289,6 +310,9 @@ class SettingsType(
         config.globalUpdateInterval.value,
         config.updateMangas.value,
         // Authentication
+        config.authMode.value,
+        config.authUsername.value,
+        config.authPassword.value,
         config.basicAuthEnabled.value,
         config.basicAuthUsername.value,
         config.basicAuthPassword.value,