feat: spotify-theme patch (#608)

src/main/kotlin/app/revanced/patches/spotify/layout/theme/annotations/ThemeCompatibility.kt

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+package app.revanced.patches.spotify.layout.theme.annotations
+
+import app.revanced.patcher.annotation.Compatibility
+import app.revanced.patcher.annotation.Package
+
+@Compatibility([Package("com.spotify.music")])
+@Target(AnnotationTarget.CLASS)
+@Retention(AnnotationRetention.RUNTIME)
+internal annotation class ThemeCompatibility

src/main/kotlin/app/revanced/patches/spotify/layout/theme/patch/ThemePatch.kt

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+package app.revanced.patches.spotify.layout.theme.patch
+
+import app.revanced.patcher.annotation.Description
+import app.revanced.patcher.annotation.Name
+import app.revanced.patcher.annotation.Version
+import app.revanced.patcher.data.impl.ResourceData
+import app.revanced.patcher.patch.OptionsContainer
+import app.revanced.patcher.patch.PatchOption
+import app.revanced.patcher.patch.PatchResult
+import app.revanced.patcher.patch.PatchResultSuccess
+import app.revanced.patcher.patch.annotations.DependsOn
+import app.revanced.patcher.patch.annotations.Patch
+import app.revanced.patcher.patch.impl.ResourcePatch
+import app.revanced.patches.spotify.layout.theme.annotations.ThemeCompatibility
+import app.revanced.patches.youtube.misc.manifest.patch.FixLocaleConfigErrorPatch
+import org.w3c.dom.Element
+
+@Patch
+@DependsOn([FixLocaleConfigErrorPatch::class])
+@Name("spotify-theme")
+@Description("Applies a custom theme.")
+@ThemeCompatibility
+@Version("0.0.1")
+class ThemePatch : ResourcePatch() {
+    override fun execute(data: ResourceData): PatchResult {
+        data.xmlEditor["res/values/colors.xml"].use { editor ->
+            val resourcesNode = editor.file.getElementsByTagName("resources").item(0) as Element
+
+            for (i in 0 until resourcesNode.childNodes.length) {
+                val node = resourcesNode.childNodes.item(i) as? Element ?: continue
+
+                node.textContent = when (node.getAttribute("name")) {
+                    "gray_7" -> backgroundColor!!
+                    "dark_brightaccent_background_base", "dark_base_text_brightaccent", "green_light" -> accentColor!!
+                    "dark_brightaccent_background_press" -> accentPressedColor!!
+                    else -> continue
+                }
+            }
+        }
+
+        return PatchResultSuccess()
+    }
+
+    companion object : OptionsContainer() {
+        var backgroundColor: String? by option(
+            PatchOption.StringOption(
+                key = "backgroundColor",
+                default = "@android:color/black",
+                title = "Background color",
+                description = "The background color. Can be a hex color or a resource reference.",
+            )
+        )
+        var accentColor: String? by option(
+            PatchOption.StringOption(
+                key = "accentColor",
+                default = "#ff1ed760",
+                title = "Accent color",
+                description = "The accent color ('spotify green' by default). Can be a hex color or a resource reference.",
+            )
+        )
+        var accentPressedColor: String? by option(
+            PatchOption.StringOption(
+                key = "accentPressedColor",
+                default = "#ff169c46",
+                title = "Pressed accent for the dark theme",
+                description = "The color when accented buttons are pressed, by default slightly darker than accent. Can be a hex color or a resource reference.",
+            )
+        )
+    }
+}