concord 1.1.1

A terminal user interface client for Discord
Documentation 
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use crate::discord::AppCommand;
use crate::discord::ids::{Id, marker::GuildMarker};

use super::emoji::{custom_emoji_reaction_item, unicode_emoji_reaction_items};
use super::scroll::{clamp_selected_index, move_index_down, move_index_up};
use super::{
    DashboardState, EmojiReactionItem, EmojiReactionPickerState, ReactionUsersPopupState,
    indexed_shortcut,
};

impl DashboardState {
    pub fn is_emoji_reaction_picker_open(&self) -> bool {
        self.emoji_reaction_picker.is_some()
    }

    pub fn is_reaction_users_popup_open(&self) -> bool {
        self.reaction_users_popup.is_some()
    }

    pub fn reaction_users_popup(&self) -> Option<&ReactionUsersPopupState> {
        self.reaction_users_popup.as_ref()
    }

    pub fn emoji_reaction_items(&self) -> Vec<EmojiReactionItem> {
        let mut items = unicode_emoji_reaction_items();
        let guild_id = self.picker_guild_id();

        if let Some(guild_id) = guild_id {
            items.extend(
                self.discord
                    .custom_emojis_for_guild(guild_id)
                    .iter()
                    .filter(|emoji| emoji.available)
                    .map(custom_emoji_reaction_item),
            );
        }

        items
    }

    pub fn close_emoji_reaction_picker(&mut self) {
        self.emoji_reaction_picker = None;
    }

    pub fn close_reaction_users_popup(&mut self) {
        self.reaction_users_popup = None;
    }

    pub fn scroll_reaction_users_popup_down(&mut self) {
        if let Some(popup) = &mut self.reaction_users_popup {
            popup.scroll = popup.scroll.saturating_add(1);
            popup.clamp_scroll();
        }
    }

    pub fn scroll_reaction_users_popup_up(&mut self) {
        if let Some(popup) = &mut self.reaction_users_popup {
            popup.scroll = popup.scroll.saturating_sub(1);
        }
    }

    pub fn page_reaction_users_popup_down(&mut self) {
        if let Some(popup) = &mut self.reaction_users_popup {
            popup.scroll = popup.scroll.saturating_add(10);
            popup.clamp_scroll();
        }
    }

    pub fn page_reaction_users_popup_up(&mut self) {
        if let Some(popup) = &mut self.reaction_users_popup {
            popup.scroll = popup.scroll.saturating_sub(10);
        }
    }

    pub fn set_reaction_users_popup_view_height(&mut self, height: usize) {
        if let Some(popup) = &mut self.reaction_users_popup {
            popup.view_height = height;
            popup.clamp_scroll();
        }
    }

    pub fn move_emoji_reaction_down(&mut self) {
        let reactions_len = self.emoji_reaction_items().len();
        if let Some(picker) = &mut self.emoji_reaction_picker {
            move_index_down(&mut picker.selected, reactions_len);
        }
    }

    pub fn move_emoji_reaction_up(&mut self) {
        if let Some(picker) = &mut self.emoji_reaction_picker {
            move_index_up(&mut picker.selected);
        }
    }

    pub fn selected_emoji_reaction_index(&self) -> Option<usize> {
        self.emoji_reaction_picker
            .as_ref()
            .map(|picker| clamp_selected_index(picker.selected, self.emoji_reaction_items().len()))
    }

    pub fn selected_emoji_reaction(&self) -> Option<EmojiReactionItem> {
        let index = self.selected_emoji_reaction_index()?;
        self.emoji_reaction_items().get(index).cloned()
    }

    pub fn activate_selected_emoji_reaction(&mut self) -> Option<AppCommand> {
        let picker = self.emoji_reaction_picker.clone()?;
        let reaction = self.selected_emoji_reaction()?;
        let command = AppCommand::AddReaction {
            channel_id: picker.channel_id,
            message_id: picker.message_id,
            emoji: reaction.emoji,
        };
        self.close_emoji_reaction_picker();
        Some(command)
    }

    pub fn activate_emoji_reaction_shortcut(&mut self, shortcut: char) -> Option<AppCommand> {
        let shortcut = shortcut.to_ascii_lowercase();
        let index = self
            .emoji_reaction_items()
            .iter()
            .enumerate()
            .position(|(index, _)| indexed_shortcut(index) == Some(shortcut))?;
        if let Some(picker) = &mut self.emoji_reaction_picker {
            picker.selected = index;
        }
        self.activate_selected_emoji_reaction()
    }

    pub(super) fn open_emoji_reaction_picker(&mut self) {
        if let Some(message) = self.selected_message_state() {
            self.emoji_reaction_picker = Some(EmojiReactionPickerState {
                selected: 0,
                guild_id: message
                    .guild_id
                    .or_else(|| self.selected_channel_guild_id()),
                channel_id: message.channel_id,
                message_id: message.id,
            });
        }
    }

    fn picker_guild_id(&self) -> Option<Id<GuildMarker>> {
        self.emoji_reaction_picker
            .as_ref()
            .and_then(|picker| picker.guild_id)
            .or_else(|| {
                self.selected_message_state()
                    .and_then(|message| message.guild_id)
            })
            .or_else(|| self.selected_channel_guild_id())
    }
}