import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxHeight
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.lazy.rememberLazyListState
import androidx.compose.foundation.rememberScrollbarAdapter
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp
import androidx.compose.ui.window.WindowPlacement
import androidx.compose.ui.window.WindowPosition
import androidx.compose.ui.window.application
import androidx.compose.ui.window.rememberWindowState
import dev.msfjarvis.claw.common.posts.LobstersCard
import dev.msfjarvis.claw.common.theme.LobstersTheme
import dev.msfjarvis.claw.common.urllauncher.UrlLauncher
import dev.msfjarvis.claw.database.local.SavedPost
import dev.msfjarvis.claw.model.LobstersPost
import org.pushingpixels.aurora.component.AuroraVerticalScrollbar
import org.pushingpixels.aurora.skin.ceruleanSkin
import org.pushingpixels.aurora.window.AuroraWindow

fun LobstersPost.toDbModel(): SavedPost {
  return SavedPost(
    shortId = shortId,
    title = title,
    url = url,
    createdAt = createdAt,
    commentsUrl = commentsUrl,
    submitterName = submitter.username,
    submitterAvatarUrl = submitter.avatarUrl,
    tags = tags,
  )
}

fun main() = application {
  val paging = Paging(rememberCoroutineScope())
  val items = paging.pagingData.collectAsLazyPagingItems()
  val urlLauncher = UrlLauncher()
  val state =
    rememberWindowState(
      placement = WindowPlacement.Floating,
      position = WindowPosition.Aligned(Alignment.Center),
    )
  AuroraWindow(
    skin = ceruleanSkin(),
    title = "Claw",
    state = state,
    undecorated = true,
    onCloseRequest = ::exitApplication,
  ) {
    LobstersTheme(darkTheme = false) {
      Box(
        modifier = Modifier.fillMaxSize(),
      ) {
        val listState = rememberLazyListState()
        if (items.itemCount == 0) {
          Box(modifier = Modifier.fillMaxSize())
        } else {
          LazyColumn(
            state = listState,
          ) {
            items(items) { item ->
              if (item != null) {
                LobstersCard(
                  post = item.toDbModel(),
                  isSaved = false,
                  viewPost = { urlLauncher.launch(item.url.ifEmpty { item.commentsUrl }) },
                  viewComments = { urlLauncher.launch(item.commentsUrl) },
                  toggleSave = {},
                  modifier = Modifier.padding(bottom = 16.dp, start = 16.dp, end = 16.dp),
                )
              }
            }
          }
        }
        AuroraVerticalScrollbar(
          adapter = rememberScrollbarAdapter(listState),
          modifier = Modifier.align(Alignment.CenterEnd).fillMaxHeight(),
        )
      }
    }
  }
}