package examples.http

import context
import fmt
import github.com.uptrace.bun
import github.com.uptrace.bun.dialect.pgdialect
import github.com.uptrace.bun.driver.pgdriver
import database.sql
import net.http
import os

class BunUser(val Name: String) 

class EpicControllerImpl(val db: *bun.DB) {

    fun hello(w: http.ResponseWriter, r: *http.Request) {
        fmt.Fprintln(w, "hello from gotlin")
    }

    fun bunHealth(w: http.ResponseWriter, r: *http.Request) {
        val ctx = context.Background()
        db.NewSelect().ColumnExpr("1").Scan(ctx)
        fmt.Fprintln(w, "bun ok")
    }

    fun bunUsers(w: http.ResponseWriter, r: *http.Request) {
        val ctx = context.Background()
        val model = BunUser("gotlin")

        db.NewCreateTable().Model(model).IfNotExists().Exec(ctx)
        val user = BunUser("user-from-gotlin")
        db.NewInsert().Model(user).Exec(ctx)
        val total = db.NewSelect().Model(model).Count(ctx).unwrap()

        fmt.Fprintln(w, "bun users total:", total)
    }
}

fun main() {
    val postgresDsn = "postgresql://postgres:postgres@localhost/postgres?sslmode=disable"
    val sqlDb = sql.OpenDB(
        pgdriver.NewConnector(
            pgdriver.WithDSN(postgresDsn)
        )
    )
    val db = bun.NewDB(sqlDb, pgdialect.New())
    val epicController = EpicControllerImpl(db)
    fmt.Println("serving http://localhost:8080")
    http.HandleFunc("/", epicController.hello)
    http.HandleFunc("/bun", epicController.bunHealth)
    http.HandleFunc("/bun/users", epicController.bunUsers)
    http.ListenAndServe(":8080", http.DefaultServeMux)
}