package io.oxygenhub.android.ui.backdrop

import io.oxygenhub.android.api.HubApi

import io.oxygenhub.android.api.UserSky

import kotlinx.coroutines.CancellationException

import uniffi.rust_core.SkyEvent

import uniffi.rust_core.Backdrop as Scene

/** Your sky's events for the scene: each aged by the hub's clock, in days; malformed ones left out. */

fun skyEvents(sky: UserSky): List<SkyEvent> = sky.events.mapNotNull { e ->

    if (e.size < 4 || e[0] !in sky.repos.indices || e[1] !in 0L..4L) return@mapNotNull null

    SkyEvent(e[0].toUInt(), e[1].toUInt(), ((sky.now - e[2]).coerceAtLeast(0) / 86_400_000.0).toFloat(), e[3].coerceIn(1, 10_000).toUInt())

}

/** Your sky, as on the hub's dashboard; the quiet field when there is nothing of yours to draw. */

fun skyScene(sky: UserSky?, still: Boolean): Scene =

    if (sky == null || sky.repos.isEmpty()) Scene.adrift(still) else Scene.sky(sky.repos, skyEvents(sky), 0f, 0f, still)

/** A repository's sky, or null when the hub cannot give it (one before #23 answers 404). */

suspend fun repoSkyOrNull(api: HubApi, owner: String, name: String): UserSky? =

    try {

        api.repoSky(owner, name)

    } catch (e: CancellationException) {

        throw e

    } catch (_: Exception) {

        null

    }