package moe.kageru.kodeshare.persistence

import moe.kageru.kodeshare.Paste
import org.jetbrains.exposed.sql.*
import org.jetbrains.exposed.sql.transactions.transaction
import org.mariadb.jdbc.MariaDbDataSource

object PasteDao {
    fun select(id: Long): Transient<Paste>? = transaction {
        PasteTable.select { PasteTable.id.eq(id) }.firstOrNull()
    }?.toPaste()

    fun insert(paste: Paste): Transient<Paste> = transaction {
        val id = PasteTable.insert {
            it[content] = paste.content
            it[html] = paste.html
        }[PasteTable.id]
        Transient(id, paste)
    }

    init {
        val source = MariaDbDataSource().apply {
            userName = "kodeshare"
            setPassword("12345")
            databaseName = "kode"
        }
        Database.connect(source)
        transaction {
            SchemaUtils.drop(PasteTable)
            SchemaUtils.create(PasteTable)
        }
    }
}

private fun ResultRow.toPaste() = Transient(
    get(PasteTable.id),
    Paste(
        content = get(PasteTable.content),
        html = get(PasteTable.html)
    )
)

private object PasteTable : Table() {
    val id = long("id").primaryKey().autoIncrement()
    val content = text("content")
    val html = text("html").nullable()
}

/*
 * Better have that one generic class
 * after deciding to make everything else
 * not generic because it would be overkill
*/
data class Transient<DATA>(val id: Long, val data: DATA)