package net.pterodactylus.sone.main

import com.google.common.base.*
import com.google.common.eventbus.*
import com.google.inject.*
import com.google.inject.matcher.*
import com.google.inject.name.Names.*
import com.google.inject.spi.*
import net.pterodactylus.sone.database.*
import net.pterodactylus.sone.database.memory.*
import net.pterodactylus.sone.freenet.wot.*
import net.pterodactylus.util.config.*
import net.pterodactylus.util.config.ConfigurationException
import net.pterodactylus.util.version.Version
import java.io.*

class SoneModuleCreator {

	fun createModule(sonePlugin: SonePlugin) = object : AbstractModule() {
		override fun configure() {
			val sonePropertiesFile = File("sone.properties")
			val firstStart = !sonePropertiesFile.exists()
			var newConfig = false
			val configuration = try {
				Configuration(MapConfigurationBackend(sonePropertiesFile, false))
			} catch (ce: ConfigurationException) {
				sonePropertiesFile.delete()
				newConfig = true
				Configuration(MapConfigurationBackend(sonePropertiesFile, true))
			}
			val context = Context("Sone")
			val loaders = configuration.getStringValue("Developer.LoadFromFilesystem")
					.getValue(null)
					?.let {
						configuration.getStringValue("Developer.FilesystemPath")
								.getValue(null)
								?.let { DebugLoaders(it) }
					}
			val eventBus = EventBus()

			bind(Configuration::class.java).toInstance(configuration)
			bind(EventBus::class.java).toInstance(eventBus)
			bind(Boolean::class.java).annotatedWith(named("FirstStart")).toInstance(firstStart)
			bind(Boolean::class.java).annotatedWith(named("NewConfig")).toInstance(newConfig)
			bind(Context::class.java).toInstance(context)
			bind(object : TypeLiteral<Optional<Context>>() {}).toInstance(Optional.of(context))
			bind(SonePlugin::class.java).toInstance(sonePlugin)
			bind(Version::class.java).toInstance(sonePlugin.version.parseVersion())
			bind(PluginVersion::class.java).toInstance(PluginVersion(sonePlugin.version))
			bind(PluginYear::class.java).toInstance(PluginYear(sonePlugin.year))
			bind(PluginHomepage::class.java).toInstance(PluginHomepage(sonePlugin.homepage))
			bind(Database::class.java).to(MemoryDatabase::class.java).`in`(Singleton::class.java)
			loaders?.let { bind(Loaders::class.java).toInstance(it) }

			bindListener(Matchers.any(), object : TypeListener {
				override fun <I> hear(typeLiteral: TypeLiteral<I>, typeEncounter: TypeEncounter<I>) {
					typeEncounter.register(InjectionListener { injectee -> eventBus.register(injectee) })
				}
			})
		}
	}

}

private fun String.parseVersion(): Version = Version.parse(this)