/*
 * Copyright (c) 2025 Element Creations Ltd.
 * Copyright 2023-2025 New Vector Ltd.
 *
 * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
 * Please see LICENSE files in the repository root for full details.
 */

package id.databisnis.android.bachot.features.home.impl.components

import androidx.compose.foundation.combinedClickable
import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Arrangement.Absolute.spacedBy
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.ColumnScope
import androidx.compose.foundation.layout.IntrinsicSize
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.heightIn
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.layout.width
import androidx.compose.material3.ripple
import androidx.compose.runtime.Composable
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.text.AnnotatedString
import androidx.compose.ui.text.font.FontStyle
import androidx.compose.ui.text.style.TextOverflow
import androidx.compose.ui.tooling.preview.PreviewParameter
import androidx.compose.ui.unit.dp
import androidx.compose.ui.zIndex
import id.databisnis.android.bachot.compound.theme.ElementTheme
import id.databisnis.android.bachot.compound.tokens.generated.CompoundIcons
import id.databisnis.android.bachot.features.home.impl.R
import id.databisnis.android.bachot.features.home.impl.model.LatestEvent
import id.databisnis.android.bachot.features.home.impl.model.RoomListRoomSummary
import id.databisnis.android.bachot.features.home.impl.model.RoomListRoomSummaryProvider
import id.databisnis.android.bachot.features.home.impl.model.RoomSummaryDisplayType
import id.databisnis.android.bachot.features.home.impl.roomlist.RoomListEvents
import id.databisnis.android.bachot.libraries.core.extensions.orEmpty
import id.databisnis.android.bachot.libraries.designsystem.atomic.atoms.UnreadIndicatorAtom
import id.databisnis.android.bachot.libraries.designsystem.atomic.molecules.InviteButtonsRowMolecule
import id.databisnis.android.bachot.libraries.designsystem.components.avatar.Avatar
import id.databisnis.android.bachot.libraries.designsystem.components.avatar.AvatarType
import id.databisnis.android.bachot.libraries.designsystem.modifiers.onKeyboardContextMenuAction
import id.databisnis.android.bachot.libraries.designsystem.preview.ElementPreview
import id.databisnis.android.bachot.libraries.designsystem.preview.PreviewsDayNight
import id.databisnis.android.bachot.libraries.designsystem.theme.components.Icon
import id.databisnis.android.bachot.libraries.designsystem.theme.components.Text
import id.databisnis.android.bachot.libraries.designsystem.theme.roomListRoomMessage
import id.databisnis.android.bachot.libraries.designsystem.theme.roomListRoomMessageDate
import id.databisnis.android.bachot.libraries.designsystem.theme.roomListRoomName
import id.databisnis.android.bachot.libraries.designsystem.theme.unreadIndicator
import id.databisnis.android.bachot.libraries.matrix.api.room.RoomNotificationMode
import id.databisnis.android.bachot.libraries.matrix.ui.components.InviteSenderView
import id.databisnis.android.bachot.libraries.matrix.ui.model.InviteSender
import id.databisnis.android.bachot.libraries.ui.strings.CommonStrings
import timber.log.Timber

internal val minHeight = 84.dp

@Composable
internal fun RoomSummaryRow(
    room: RoomListRoomSummary,
    hideInviteAvatars: Boolean,
    isInviteSeen: Boolean,
    onClick: (RoomListRoomSummary) -> Unit,
    eventSink: (RoomListEvents) -> Unit,
    modifier: Modifier = Modifier,
) {
    Box(modifier = modifier) {
        when (room.displayType) {
            RoomSummaryDisplayType.PLACEHOLDER -> {
                RoomSummaryPlaceholderRow()
            }
            RoomSummaryDisplayType.INVITE -> {
                RoomSummaryScaffoldRow(
                    room = room,
                    hideAvatarImage = hideInviteAvatars,
                    onClick = onClick,
                    onLongClick = {
                        Timber.d("Long click on invite room")
                    },
                ) {
                    InviteNameAndIndicatorRow(name = room.name, isInviteSeen = isInviteSeen)
                    InviteSubtitle(isDm = room.isDm, inviteSender = room.inviteSender)
                    if (!room.isDm && room.inviteSender != null) {
                        Spacer(modifier = Modifier.height(4.dp))
                        InviteSenderView(
                            modifier = Modifier.fillMaxWidth(),
                            inviteSender = room.inviteSender,
                            hideAvatarImage = hideInviteAvatars
                        )
                    }
                    Spacer(modifier = Modifier.height(12.dp))
                    InviteButtonsRowMolecule(
                        onAcceptClick = {
                            eventSink(RoomListEvents.AcceptInvite(room))
                        },
                        onDeclineClick = {
                            eventSink(RoomListEvents.ShowDeclineInviteMenu(room))
                        }
                    )
                }
            }
            RoomSummaryDisplayType.ROOM -> {
                RoomSummaryScaffoldRow(
                    room = room,
                    onClick = onClick,
                    onLongClick = {
                        eventSink(RoomListEvents.ShowContextMenu(room))
                    },
                ) {
                    NameAndTimestampRow(
                        name = room.name,
                        latestEvent = room.latestEvent,
                        timestamp = room.timestamp,
                        isHighlighted = room.isHighlighted
                    )
                    MessagePreviewAndIndicatorRow(room = room)
                }
            }
            RoomSummaryDisplayType.KNOCKED -> {
                RoomSummaryScaffoldRow(
                    room = room,
                    onClick = onClick,
                    onLongClick = {
                        Timber.d("Long click on knocked room")
                    },
                ) {
                    NameAndTimestampRow(
                        name = room.name,
                        latestEvent = room.latestEvent,
                        timestamp = null,
                        isHighlighted = room.isHighlighted
                    )
                    if (room.canonicalAlias != null) {
                        Text(
                            text = room.canonicalAlias.value,
                            maxLines = 1,
                            overflow = TextOverflow.Ellipsis,
                            style = ElementTheme.typography.fontBodyMdRegular,
                            color = ElementTheme.colors.textSecondary,
                        )
                        Spacer(modifier = Modifier.height(4.dp))
                    }
                    Text(
                        text = stringResource(id = R.string.screen_roomlist_knock_event_sent_description),
                        maxLines = 1,
                        overflow = TextOverflow.Ellipsis,
                        style = ElementTheme.typography.fontBodyMdRegular,
                        color = ElementTheme.colors.textSecondary,
                    )
                }
            }
        }
    }
}

@Composable
private fun RoomSummaryScaffoldRow(
    room: RoomListRoomSummary,
    onClick: (RoomListRoomSummary) -> Unit,
    onLongClick: (RoomListRoomSummary) -> Unit,
    modifier: Modifier = Modifier,
    hideAvatarImage: Boolean = false,
    content: @Composable ColumnScope.() -> Unit
) {
    val clickModifier = Modifier
        .combinedClickable(
            onClick = { onClick(room) },
            onLongClick = { onLongClick(room) },
            onLongClickLabel = stringResource(CommonStrings.action_open_context_menu),
            indication = ripple(),
            interactionSource = remember { MutableInteractionSource() }
        )
        .onKeyboardContextMenuAction { onLongClick(room) }
    Row(
        modifier = modifier
            .fillMaxWidth()
            .heightIn(min = minHeight)
            .then(clickModifier)
            .padding(horizontal = 16.dp, vertical = 11.dp)
            .height(IntrinsicSize.Min),
    ) {
        Avatar(
            avatarData = room.avatarData,
            avatarType = if (room.isSpace) {
                AvatarType.Space(isTombstoned = room.isTombstoned)
            } else {
                AvatarType.Room(
                    heroes = room.heroes,
                    isTombstoned = room.isTombstoned,
                )
            },
            hideImage = hideAvatarImage,
        )
        Spacer(modifier = Modifier.width(16.dp))
        Column(
            modifier = Modifier.fillMaxWidth(),
            content = content,
        )
    }
}

@Composable
private fun NameAndTimestampRow(
    name: String?,
    latestEvent: LatestEvent,
    timestamp: String?,
    isHighlighted: Boolean,
    modifier: Modifier = Modifier
) {
    Row(
        modifier = modifier.fillMaxWidth(),
        horizontalArrangement = spacedBy(16.dp)
    ) {
        Row(
            modifier = Modifier.weight(1f),
            verticalAlignment = Alignment.CenterVertically,
        ) {
            // Name
            Text(
                style = ElementTheme.typography.fontBodyLgMedium,
                text = name ?: stringResource(id = CommonStrings.common_no_room_name),
                fontStyle = FontStyle.Italic.takeIf { name == null },
                color = ElementTheme.colors.roomListRoomName,
                maxLines = 1,
                overflow = TextOverflow.Ellipsis
            )
            // Picto
            when (latestEvent) {
                is LatestEvent.Sending -> {
                    Spacer(modifier = Modifier.width(4.dp))
                    Icon(
                        modifier = Modifier.size(16.dp),
                        imageVector = CompoundIcons.Time(),
                        contentDescription = null,
                        tint = ElementTheme.colors.iconTertiary,
                    )
                }
                is LatestEvent.Error -> {
                    Spacer(modifier = Modifier.width(4.dp))
                    Icon(
                        modifier = Modifier.size(16.dp),
                        imageVector = CompoundIcons.ErrorSolid(),
                        contentDescription = null,
                        tint = ElementTheme.colors.iconCriticalPrimary,
                    )
                }
                else -> Unit
            }
        }
        // Timestamp
        Text(
            text = timestamp ?: "",
            style = ElementTheme.typography.fontBodySmMedium,
            color = if (isHighlighted) {
                ElementTheme.colors.unreadIndicator
            } else {
                ElementTheme.colors.roomListRoomMessageDate
            },
        )
    }
}

@Composable
private fun InviteSubtitle(
    isDm: Boolean,
    inviteSender: InviteSender?,
    modifier: Modifier = Modifier
) {
    val subtitle = if (isDm) {
        inviteSender?.userId?.value
    } else {
        null
    }
    if (subtitle != null) {
        Text(
            text = subtitle,
            maxLines = 1,
            overflow = TextOverflow.Ellipsis,
            style = ElementTheme.typography.fontBodyMdRegular,
            color = ElementTheme.colors.roomListRoomMessage,
            modifier = modifier,
        )
    }
}

@Composable
private fun MessagePreviewAndIndicatorRow(
    room: RoomListRoomSummary,
    modifier: Modifier = Modifier,
) {
    Row(
        modifier = modifier.fillMaxWidth(),
        horizontalArrangement = spacedBy(28.dp)
    ) {
        if (room.isTombstoned) {
            Text(
                modifier = Modifier.weight(1f),
                text = stringResource(R.string.screen_roomlist_tombstoned_room_description),
                color = ElementTheme.colors.roomListRoomMessage,
                style = ElementTheme.typography.fontBodyMdRegular,
                minLines = 2,
                maxLines = 2,
                overflow = TextOverflow.Ellipsis,
            )
        } else {
            if (room.latestEvent is LatestEvent.Error) {
                Text(
                    modifier = Modifier.weight(1f),
                    text = stringResource(CommonStrings.common_message_failed_to_send),
                    color = ElementTheme.colors.textCriticalPrimary,
                    style = ElementTheme.typography.fontBodyMdRegular,
                    minLines = 2,
                    maxLines = 2,
                    overflow = TextOverflow.Ellipsis,
                )
            } else {
                val messagePreview = room.latestEvent.content()
                val annotatedMessagePreview = messagePreview as? AnnotatedString ?: AnnotatedString(text = messagePreview.orEmpty().toString())
                Text(
                    modifier = Modifier.weight(1f),
                    text = annotatedMessagePreview,
                    color = ElementTheme.colors.roomListRoomMessage,
                    style = ElementTheme.typography.fontBodyMdRegular,
                    minLines = 2,
                    maxLines = 2,
                    overflow = TextOverflow.Ellipsis,
                )
            }
        }

        // Call and unread
        Row(
            modifier = Modifier
                .height(16.dp)
                // Used to force this line to be read aloud earlier than the latest event when using Talkback
                .zIndex(-1f),
            horizontalArrangement = Arrangement.spacedBy(8.dp),
            verticalAlignment = Alignment.CenterVertically,
        ) {
            val tint = if (room.isHighlighted) ElementTheme.colors.unreadIndicator else ElementTheme.colors.iconQuaternary
            if (room.hasRoomCall) {
                OnGoingCallIcon(
                    color = tint,
                )
            }
            if (room.userDefinedNotificationMode == RoomNotificationMode.MUTE) {
                NotificationOffIndicatorAtom()
            } else if (room.numberOfUnreadMentions > 0) {
                MentionIndicatorAtom()
            }
            if (room.hasNewContent) {
                val contentDescription = stringResource(CommonStrings.a11y_notifications_new_messages)
                UnreadIndicatorAtom(
                    color = tint,
                    contentDescription = contentDescription,
                )
            }
        }
    }
}

@Composable
private fun InviteNameAndIndicatorRow(
    name: String?,
    isInviteSeen: Boolean,
    modifier: Modifier = Modifier,
) {
    Row(
        modifier = modifier.fillMaxWidth(),
        horizontalArrangement = spacedBy(16.dp),
        verticalAlignment = Alignment.CenterVertically,
    ) {
        Text(
            modifier = Modifier.weight(1f),
            style = ElementTheme.typography.fontBodyLgMedium,
            text = name ?: stringResource(id = CommonStrings.common_no_room_name),
            fontStyle = FontStyle.Italic.takeIf { name == null },
            color = ElementTheme.colors.roomListRoomName,
            maxLines = 1,
            overflow = TextOverflow.Ellipsis
        )
        if (!isInviteSeen) {
            UnreadIndicatorAtom(
                color = ElementTheme.colors.unreadIndicator
            )
        }
    }
}

@Composable
private fun OnGoingCallIcon(
    color: Color,
) {
    Icon(
        modifier = Modifier.size(16.dp),
        imageVector = CompoundIcons.VideoCallSolid(),
        contentDescription = stringResource(CommonStrings.a11y_notifications_ongoing_call),
        tint = color,
    )
}

@Composable
private fun NotificationOffIndicatorAtom() {
    Icon(
        modifier = Modifier.size(16.dp),
        contentDescription = stringResource(CommonStrings.a11y_notifications_muted),
        imageVector = CompoundIcons.NotificationsOffSolid(),
        tint = ElementTheme.colors.iconQuaternary,
    )
}

@Composable
private fun MentionIndicatorAtom() {
    Icon(
        modifier = Modifier.size(16.dp),
        contentDescription = stringResource(CommonStrings.a11y_notifications_new_mentions),
        imageVector = CompoundIcons.Mention(),
        tint = ElementTheme.colors.unreadIndicator,
    )
}

@PreviewsDayNight
@Composable
internal fun RoomSummaryRowPreview(@PreviewParameter(RoomListRoomSummaryProvider::class) data: RoomListRoomSummary) = ElementPreview {
    RoomSummaryRow(
        room = data,
        hideInviteAvatars = false,
        // Set isInviteSeen to true for the preview when the room has name "Bob"
        isInviteSeen = data.name == "Bob",
        onClick = {},
        eventSink = {},
    )
}
