// Android - SharedPreferences hell
val prefs = context.getSharedPreferences("settings", Context.MODE_PRIVATE)
val isDarkMode = prefs.getBoolean("is_dark_mode_enabled", false)
prefs.edit().putBoolean("is_dark_mode_enabled", true).apply()

// iOS - NSUserDefaults pain
val userDefaults = NSUserDefaults.standardUserDefaults
val isDarkMode = userDefaults.boolForKey("is_dark_mode_enabled")
userDefaults.setBool(true, forKey = "is_dark_mode_enabled")

// expect/actual nightmare for every single property...

@Config(groupName = "UserSettings")
interface UserSettings {
    @BooleanProperty(defaultValue = false, description = "Enable dark mode")
    var isDarkModeEnabled: Boolean
    
    @StringProperty(defaultValue = "https://api.example.com", description = "API endpoint")
    var apiEndpoint: String
}

// Usage - pure magic ✨
val settings = AppConfig.usersettings
settings.isDarkModeEnabled = true  // Automatically persisted!

// build.gradle.kts
plugins {
    id("com.google.devtools.ksp") version "CURRENT_KSP_VERSION"
    id("io.github.mambawow.appconfig") version "0.0.3-alpha03"
}

kotlin {
    sourceSets {
        commonMain.dependencies {
            implementation("io.github.mambawow.appconfig:appconfig-lib:0.0.3-alpha03")
            // Optional: Admin UI panel
            implementation("io.github.mambawow.appconfig:appconfig-panel:0.0.3-alpha03")
        }
    }
}

@Config(groupName = "UserSettings")
interface UserSettings {
    @BooleanProperty(defaultValue = false, description = "Enable dark mode")
    var isDarkModeEnabled: Boolean
    
    @StringProperty(defaultValue = "https://api.example.com", description = "API base URL")
    var apiEndpoint: String
    
    @IntProperty(defaultValue = 30, description = "Network timeout in seconds")
    var timeoutSeconds: Int
}

// Access your configuration anywhere in your app
val settings = AppConfig.usersettings

// Read values
println("Dark mode: ${settings.isDarkModeEnabled}")
println("API: ${settings.apiEndpoint}")

// Update values (automatically persisted across platforms!)
settings.isDarkModeEnabled = true
settings.timeoutSeconds = 60

@Composable
fun DebugScreen() {
    ConfigPanel(
        configItems = AppConfig.getAllConfigItems()
    )
}

// androidMain/kotlin/.../AndroidSettings.kt
@Config
interface AndroidSettings {
    @BooleanProperty(defaultValue = false, description = "Enable Camera X")
    var isCameraXEnabled: Boolean
    
    @BooleanProperty(defaultValue = true, description = "Use Material You colors")
    var useMaterialYou: Boolean
}

// iosMain/kotlin/.../IOSSettings.kt  
@Config
interface IOSSettings {
    @BooleanProperty(defaultValue = true, description = "Enable haptic feedback")
    var enableHaptics: Boolean
    
    @BooleanProperty(defaultValue = false, description = "Use alternative app icons")
    var useAlternateIcons: Boolean
}

@Config
interface ExperimentConfig {
    @OptionProperty(description = "Onboarding A/B test")
    var onboardingGroup: OnboardingGroup
}

@Option
sealed class OnboardingGroup {
    @OptionItem(0, "Group A - Tutorial", isDefault = true)
    object Tutorial : OnboardingGroup()
    
    @OptionItem(1, "Group B - Interactive demo")
    object Demo : OnboardingGroup()
    
    @OptionItem(2, "Group C - Skip onboarding")
    object Skip : OnboardingGroup()
}

// Usage - type-safe and self-documenting
val experiment = AppConfig.experimentconfig
when (experiment.onboardingGroup) {
    OnboardingGroup.Tutorial -> showTutorial()
    OnboardingGroup.Demo -> showDemo()
    OnboardingGroup.Skip -> skipOnboarding()
}

@Config
interface ShoppingConfig {
    @BooleanProperty(defaultValue = false)
    var enableOneClickCheckout: Boolean
    
    @OptionProperty(description = "Checkout flow variant")
    var checkoutVariant: CheckoutVariant
    
    @IntProperty(defaultValue = 5)
    var maxCartItems: Int
}

@Config  
interface SocialConfig {
    @BooleanProperty(defaultValue = true)
    var enableStories: Boolean
    
    @BooleanProperty(defaultValue = false) 
    var enableLiveStreaming: Boolean
    
    @OptionProperty(description = "Feed algorithm")
    var feedAlgorithm: FeedAlgorithm
}