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Mole/lib/smart_menu.sh
2025-09-25 20:22:51 +08:00

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#!/bin/bash
# Smart menu with pagination and search for large lists
# Much better UX for handling many items
# Smart multi-select with search and pagination
smart_multi_select() {
local title="$1"
shift
local -a all_items=("$@")
if [[ ${#all_items[@]} -eq 0 ]]; then
echo "Error: No items provided" >&2
return 1
fi
local -a selected_indices=()
local -a filtered_items=()
local -a filtered_indices=()
local search_term=""
local page_size=15
local current_page=0
# Function to filter items based on search
filter_items() {
filtered_items=()
filtered_indices=()
if [[ -z "$search_term" ]]; then
# No search, show all items
filtered_items=("${all_items[@]}")
for ((i = 0; i < ${#all_items[@]}; i++)); do
filtered_indices+=($i)
done
else
# Filter items that contain search term (case insensitive)
for ((i = 0; i < ${#all_items[@]}; i++)); do
if [[ "${all_items[i],,}" == *"${search_term,,}"* ]]; then
filtered_items+=("${all_items[i]}")
filtered_indices+=($i)
fi
done
fi
}
# Function to display current page
show_page() {
local total_filtered=${#filtered_items[@]}
local total_pages=$(( (total_filtered + page_size - 1) / page_size ))
local start_idx=$((current_page * page_size))
local end_idx=$((start_idx + page_size - 1))
if [[ $end_idx -ge $total_filtered ]]; then
end_idx=$((total_filtered - 1))
fi
printf '\033[2J\033[H' >&2
echo "╭─────────────────────────────────────────────────────╮" >&2
echo "$title" >&2
echo "├─────────────────────────────────────────────────────┤" >&2
echo "│ Total: ${#all_items[@]} | Filtered: $total_filtered | Selected: ${#selected_indices[@]}" >&2
if [[ -n "$search_term" ]]; then
echo "│ Search: '$search_term' │" >&2
fi
if [[ $total_pages -gt 1 ]]; then
echo "│ Page $(($current_page + 1)) of $total_pages" >&2
fi
echo "╰─────────────────────────────────────────────────────╯" >&2
echo "" >&2
if [[ $total_filtered -eq 0 ]]; then
echo "No items match your search." >&2
echo "" >&2
else
# Show items for current page
for ((i = start_idx; i <= end_idx && i < total_filtered; i++)); do
local item_idx=${filtered_indices[i]}
local display_num=$((i + 1))
# Check if this item is selected
local is_selected=false
if [[ ${#selected_indices[@]} -gt 0 ]]; then
for selected in "${selected_indices[@]}"; do
if [[ $selected -eq $item_idx ]]; then
is_selected=true
break
fi
done
fi
if [[ $is_selected == true ]]; then
printf "%3d) ✓ %s\n" "$display_num" "${filtered_items[i]}" >&2
else
printf "%3d) %s\n" "$display_num" "${filtered_items[i]}" >&2
fi
done
fi
echo "" >&2
echo "Commands:" >&2
echo " Numbers: Select items (e.g., '1-5', '1 3 7', '10-15')" >&2
echo " /search: Filter items (e.g., '/chrome')" >&2
echo " n/p: Next/Previous page | all: Select all | none: Clear all" >&2
echo " done: Finish selection | quit: Cancel" >&2
echo "" >&2
}
# Main loop
while true; do
filter_items
show_page
read -p "Enter command: " -r input >&2
case "$input" in
"done"|"")
break
;;
"quit"|"q")
return 1
;;
"all")
selected_indices=()
for idx in "${filtered_indices[@]}"; do
selected_indices+=($idx)
done
echo "Selected all filtered items (${#filtered_indices[@]})" >&2
;;
"none")
selected_indices=()
echo "Cleared all selections" >&2
;;
"n"|"next")
local total_pages=$(( (${#filtered_items[@]} + page_size - 1) / page_size ))
if [[ $((current_page + 1)) -lt $total_pages ]]; then
((current_page++))
else
echo "Already on last page" >&2
fi
;;
"p"|"prev")
if [[ $current_page -gt 0 ]]; then
((current_page--))
else
echo "Already on first page" >&2
fi
;;
/*)
# Search functionality
search_term="${input#/}"
current_page=0
echo "Searching for: '$search_term'" >&2
;;
*)
# Parse selection input
parse_selection "$input"
;;
esac
[[ "$input" != "n" && "$input" != "next" && "$input" != "p" && "$input" != "prev" ]] && sleep 1
done
# Return selected indices
local result=""
if [[ ${#selected_indices[@]} -gt 0 ]]; then
for idx in "${selected_indices[@]}"; do
result="$result $idx"
done
echo "${result# }"
else
echo ""
fi
return 0
}
# Parse selection input (supports ranges and individual numbers)
parse_selection() {
local input="$1"
local start_idx=$((current_page * page_size))
# Split input by spaces
read -ra parts <<< "$input"
for part in "${parts[@]}"; do
if [[ "$part" =~ ^[0-9]+$ ]]; then
# Single number
local display_num=$part
local array_idx=$((display_num - 1))
if [[ $array_idx -ge 0 && $array_idx -lt ${#filtered_items[@]} ]]; then
local real_idx=${filtered_indices[array_idx]}
toggle_selection "$real_idx"
else
echo "Invalid selection: $part (range: 1-${#filtered_items[@]})" >&2
fi
elif [[ "$part" =~ ^([0-9]+)-([0-9]+)$ ]]; then
# Range like 1-5
local start_num=${BASH_REMATCH[1]}
local end_num=${BASH_REMATCH[2]}
for ((num = start_num; num <= end_num; num++)); do
local array_idx=$((num - 1))
if [[ $array_idx -ge 0 && $array_idx -lt ${#filtered_items[@]} ]]; then
local real_idx=${filtered_indices[array_idx]}
toggle_selection "$real_idx"
fi
done
else
echo "Invalid format: $part (use numbers, ranges like '1-5', or commands)" >&2
fi
done
}
# Toggle selection of an item
toggle_selection() {
local idx=$1
local already_selected=false
local pos_to_remove=-1
# Check if already selected
if [[ ${#selected_indices[@]} -gt 0 ]]; then
for ((i = 0; i < ${#selected_indices[@]}; i++)); do
if [[ ${selected_indices[i]} -eq $idx ]]; then
already_selected=true
pos_to_remove=$i
break
fi
done
fi
if [[ $already_selected == true ]]; then
# Remove from selection
unset selected_indices[$pos_to_remove]
selected_indices=("${selected_indices[@]}") # Reindex array
echo "Removed: ${all_items[idx]}" >&2
else
# Add to selection
selected_indices+=($idx)
echo "Added: ${all_items[idx]}" >&2
fi
}
# Demo function
demo_smart() {
local test_apps=()
for i in {1..50}; do
test_apps+=("Test App $i (${RANDOM}MB)")
done
echo "=== Smart Multi-select Demo ===" >&2
local result
result=$(smart_multi_select "Choose Applications to Remove" "${test_apps[@]}")
if [[ $? -eq 0 ]]; then
echo "You selected indices: '$result'" >&2
echo "Selected ${result// /,} out of ${#test_apps[@]} items" >&2
else
echo "Selection cancelled" >&2
fi
}
# Run demo if script is executed directly
if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
demo_smart
fi