package ritm.schedule.widget

import android.content.Context
import androidx.compose.runtime.Composable
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import androidx.glance.GlanceId
import androidx.glance.GlanceModifier
import androidx.glance.GlanceTheme
import androidx.glance.action.actionStartActivity
import androidx.glance.action.clickable
import androidx.glance.appwidget.GlanceAppWidget
import androidx.glance.appwidget.GlanceAppWidgetReceiver
import ritm.schedule.app
import androidx.glance.appwidget.provideContent
import androidx.glance.background
import androidx.glance.layout.Alignment
import androidx.glance.layout.Column
import androidx.glance.layout.Row
import androidx.glance.layout.Spacer
import androidx.glance.layout.fillMaxSize
import androidx.glance.layout.padding
import androidx.glance.layout.width
import androidx.glance.text.FontWeight
import androidx.glance.text.Text
import androidx.glance.text.TextStyle
import ritm.schedule.MainActivity

/** One line on the home screen: when the next lesson is, what it is and where. */
class NextLessonWidget : GlanceAppWidget() {
    override suspend fun provideGlance(context: Context, id: GlanceId) {
        val next = upcoming(context)
        val dynamic = context.app.settings.now().dynamicColor
        provideContent { WidgetTheme(dynamic) { Content(next) } }
    }

    @Composable
    private fun Content(next: Upcoming?) {
        Row(
            verticalAlignment = Alignment.CenterVertically,
            modifier = GlanceModifier
                .fillMaxSize()
                .roundedBackground(GlanceTheme.colors.widgetBackground, 28.dp)
                .padding(horizontal = 16.dp, vertical = 8.dp)
                .clickable(actionStartActivity<MainActivity>()),
        ) {
            if (next == null) {
                Text(
                    "Ближайших пар нет",
                    style = TextStyle(color = GlanceTheme.colors.onSurface, fontSize = 15.sp, fontWeight = FontWeight.Medium),
                )
                return@Row
            }
            Text(
                next.whenLabel(),
                maxLines = 1,
                style = TextStyle(
                    color = if (next.running) GlanceTheme.colors.onPrimary else GlanceTheme.colors.onPrimaryContainer,
                    fontSize = 13.sp,
                    fontWeight = FontWeight.Bold,
                ),
                modifier = GlanceModifier
                    .roundedBackground(if (next.running) GlanceTheme.colors.primary else GlanceTheme.colors.primaryContainer, 16.dp)
                    .padding(horizontal = 10.dp, vertical = 6.dp),
            )
            Spacer(GlanceModifier.width(12.dp))
            Column(modifier = GlanceModifier.defaultWeight()) {
                Text(
                    next.subject,
                    maxLines = 1,
                    style = TextStyle(color = GlanceTheme.colors.onSurface, fontSize = 15.sp, fontWeight = FontWeight.Bold),
                )
                if (next.rooms.isNotEmpty()) Text(
                    "ауд. ${next.rooms}",
                    maxLines = 1,
                    style = TextStyle(color = GlanceTheme.colors.onSurfaceVariant, fontSize = 13.sp),
                )
            }
        }
    }
}

class NextLessonWidgetReceiver : GlanceAppWidgetReceiver() {
    override val glanceAppWidget: GlanceAppWidget = NextLessonWidget()
}