package xyz.etztech.stonks.statisticsimporter

import com.beust.klaxon.*
import com.beust.klaxon.Klaxon
import java.io.File
import java.time.Instant
import org.jetbrains.exposed.sql.Database
import org.jetbrains.exposed.sql.insert
import org.jetbrains.exposed.sql.`java-time`.timestamp
import org.jetbrains.exposed.sql.transactions.transaction
import xyz.etztech.stonks.dsl.Statistics

object StatisticsImporter {
    init {}

    private val klaxon = Klaxon()

    fun importStatistics(folder: String, database: Database) {
        File(folder).listFiles().forEach { readFile(it, database) }
    }

    fun readFile(file: File, database: Database) {
        val statsFile = StatsFile.fromJson(file.readText())
        val playerId = file.nameWithoutExtension

        transaction(database) {
            statsFile?.stats?.forEach { type, stats ->
                stats.forEach { name, value ->
                    Statistics.insert {
                        it[Statistics.playerId] = playerId
                        it[Statistics.type] = type
                        it[Statistics.name] = name
                        it[Statistics.timestamp] = Instant.now() as Instant
                        it[Statistics.value] = value
                    }
                }
            }
        }
    }

    data class StatsFile(val stats: Map<String, Map<String, Long>>) {
        companion object {
            public fun fromJson(json: String) = klaxon.parse<StatsFile>(json)
        }
    }
}