From f566f8d9d0b2a213492e18a963b81a2469572b53 Mon Sep 17 00:00:00 2001
From: "shutkin.k" <shutkin.k@wildberries.work>
Date: Sat, 24 May 2025 09:36:35 +0300
Subject: [PATCH]  Add checklist.sh scrpt

---
 checklist.sh | 211 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 211 insertions(+)
 create mode 100755 checklist.sh

diff --git a/checklist.sh b/checklist.sh
new file mode 100755
index 0000000..abd77f1
--- /dev/null
+++ b/checklist.sh
@@ -0,0 +1,211 @@
+#!/bin/bash
+
+# Check if file argument is provided
+if [ $# -ne 1 ]; then
+    echo "Usage: $0 <path_to_file>"
+    exit 1
+fi
+
+FILE="$1"
+
+# Check if file exists
+if [ ! -f "$FILE" ]; then
+    echo "Error: File '$FILE' not found"
+    exit 1
+fi
+
+# Terminal control functions
+hide_cursor() {
+    printf '\033[?25l'
+}
+
+show_cursor() {
+    printf '\033[?25h'
+}
+
+move_cursor() {
+    printf '\033[%d;%dH' "$1" "$2"
+}
+
+clear_screen() {
+    printf '\033[2J'
+    printf '\033[H'
+}
+
+cleanup() {
+    show_cursor
+    clear_screen
+    echo "Goodbye!"
+    exit 0
+}
+
+# Trap to ensure cursor is restored on exit
+trap cleanup EXIT INT TERM
+
+# Hide cursor at start
+hide_cursor
+
+# Parse the file and store tasks
+declare -a categories=()
+declare -A tasks=()
+declare -A checked=()
+declare -a display_items=()  # Store display items in order
+current_category=""
+task_counter=0
+
+while IFS= read -r line; do
+    if [[ $line =~ ^@(.+)$ ]]; then
+        current_category="${BASH_REMATCH[1]}"
+        categories+=("$current_category")
+        display_items+=("CATEGORY:$current_category")
+    elif [[ -n "$line" && -n "$current_category" ]]; then
+        task_key="${current_category}_${task_counter}"
+        tasks["$task_key"]="$line"
+        checked["$task_key"]=false
+        display_items+=("TASK:$task_key")
+        ((task_counter++))
+    fi
+done < "$FILE"
+
+# Current selection
+current_selection=0
+total_items=${#display_items[@]}
+header_lines=3
+
+# Initial display
+initial_display() {
+    clear_screen
+    echo "Checklist - Use ↑/↓ to navigate, SPACE to toggle, q to quit"
+    echo "File: $FILE"
+    echo "=================================================="
+    
+    for i in "${!display_items[@]}"; do
+        item="${display_items[$i]}"
+        if [[ $item =~ ^CATEGORY:(.+)$ ]]; then
+            category="${BASH_REMATCH[1]}"
+            echo "@$category"
+        elif [[ $item =~ ^TASK:(.+)$ ]]; then
+            task_key="${BASH_REMATCH[1]}"
+            checkbox="[ ]"
+            if [ "${checked[$task_key]}" = true ]; then
+                checkbox="[✓]"
+            fi
+            echo "  $checkbox ${tasks[$task_key]}"
+        fi
+        echo  # Empty line after each item
+    done
+}
+
+# Update single line
+update_line() {
+    local line_num=$((header_lines + 1 + ($1 * 2)))  # *2 because of empty lines
+    move_cursor $line_num 1
+    printf '\033[K'  # Clear line
+    
+    item="${display_items[$1]}"
+    if [[ $item =~ ^CATEGORY:(.+)$ ]]; then
+        category="${BASH_REMATCH[1]}"
+        if [ $1 -eq $current_selection ]; then
+            printf '\033[7m@%s\033[0m' "$category"
+        else
+            printf '@%s' "$category"
+        fi
+    elif [[ $item =~ ^TASK:(.+)$ ]]; then
+        task_key="${BASH_REMATCH[1]}"
+        checkbox="[ ]"
+        if [ "${checked[$task_key]}" = true ]; then
+            checkbox="[✓]"
+        fi
+        task_line="  $checkbox ${tasks[$task_key]}"
+        if [ $1 -eq $current_selection ]; then
+            printf '\033[7m%s\033[0m' "$task_line"
+        else
+            printf '%s' "$task_line"
+        fi
+    fi
+}
+
+# Update only the checkbox part of a task line
+update_checkbox() {
+    local line_num=$((header_lines + 1 + ($1 * 2)))
+    local task_key="${BASH_REMATCH[1]}"
+    
+    item="${display_items[$1]}"
+    if [[ $item =~ ^TASK:(.+)$ ]]; then
+        task_key="${BASH_REMATCH[1]}"
+        checkbox="[ ]"
+        if [ "${checked[$task_key]}" = true ]; then
+            checkbox="[✓]"
+        fi
+        
+        # Move to checkbox position (column 3) and update just the checkbox
+        move_cursor $line_num 3
+        if [ $1 -eq $current_selection ]; then
+            printf '\033[7m%s\033[0m' "$checkbox"
+        else
+            printf '%s' "$checkbox"
+        fi
+    fi
+}
+
+# Get the task key at current selection
+get_current_task_key() {
+    item="${display_items[$current_selection]}"
+    if [[ $item =~ ^TASK:(.+)$ ]]; then
+        echo "${BASH_REMATCH[1]}"
+    else
+        echo ""
+    fi
+}
+
+# Show initial display
+initial_display
+
+# Highlight first item
+update_line 0
+
+# Main loop
+prev_selection=0
+while true; do
+    # Read single character
+    IFS= read -rsn1 input
+    
+    # Handle different input cases
+    if [[ $input == $'\x1b' ]]; then
+        # ESC sequence - read next two characters
+        IFS= read -rsn2 input
+        case $input in
+            '[A')  # Up arrow
+                if [ $current_selection -gt 0 ]; then
+                    prev_selection=$current_selection
+                    ((current_selection--))
+                    update_line $prev_selection
+                    update_line $current_selection
+                fi
+                ;;
+            '[B')  # Down arrow
+                if [ $current_selection -lt $((total_items - 1)) ]; then
+                    prev_selection=$current_selection
+                    ((current_selection++))
+                    update_line $prev_selection
+                    update_line $current_selection
+                fi
+                ;;
+        esac
+    elif [[ $input == ' ' ]]; then
+        # Space bar - toggle checkbox
+        task_key=$(get_current_task_key)
+        if [ -n "$task_key" ]; then
+            if [ "${checked[$task_key]}" = true ]; then
+                checked["$task_key"]=false
+            else
+                checked["$task_key"]=true
+            fi
+            # Only update the checkbox, not the entire line
+            update_checkbox $current_selection
+        fi
+    elif [[ $input == 'q' ]] || [[ $input == 'Q' ]]; then
+        # Quit - cleanup will be called by trap
+        exit 0
+    fi
+done