amoxide-tui 0.8.1

Interactive TUI for amoxide — manage aliases and profiles visually
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use crate::model::{AliasId, Mode, NodeKind, TuiModel};

pub fn handle_toggle(model: &mut TuiModel) {
    if model.mode != Mode::Normal && !matches!(model.mode, Mode::Transfer(_)) {
        return;
    }
    if let Some(node) = model.tree.get(model.cursor).cloned() {
        if node.kind.is_selectable() {
            // Single alias toggle
            if let Some(ref id) = node.alias_id {
                if !model.selected.remove(id) {
                    model.selected.insert(id.clone());
                }
            }
        } else {
            // Header: toggle all aliases inside this container
            let child_ids = collect_child_aliases(model, model.cursor);
            if !child_ids.is_empty() {
                // If any are selected, deselect all. Otherwise select all.
                let any_selected = child_ids.iter().any(|id| model.selected.contains(id));
                if any_selected {
                    for id in &child_ids {
                        model.selected.remove(id);
                    }
                } else {
                    for id in child_ids {
                        model.selected.insert(id);
                    }
                }
            }
        }
    }
}

/// Collect all selectable ids that belong to the container at `header_idx`.
/// For scope headers (Global/Profile/Project), collects aliases and subcommand leaf items.
/// For SubcommandProgramHeader/GroupNode, collects only the SubcommandItem leaves within.
pub(super) fn collect_child_aliases(model: &TuiModel, header_idx: usize) -> Vec<AliasId> {
    let mut ids = Vec::new();
    let start_kind = &model.tree[header_idx].kind;
    for node in model.tree.iter().skip(header_idx + 1) {
        match node.kind {
            NodeKind::AliasItem | NodeKind::SubcommandItem => {
                if let Some(ref id) = node.alias_id {
                    ids.push(id.clone());
                }
            }
            // Structural subcommand nodes — descend through them
            NodeKind::SubcommandGroupNode => {}
            // A new program header stops collection when we're collecting for a scope header.
            // When collecting for a SubcommandProgramHeader, it stops at the next program header.
            NodeKind::SubcommandProgramHeader => {
                if *start_kind != NodeKind::SubcommandGroupNode {
                    break;
                }
            }
            // Stop at scope headers — they belong to a different container
            NodeKind::GlobalHeader | NodeKind::ProjectHeader | NodeKind::ProfileHeader => break,
        }
    }
    ids
}