Enhance bot functionality and refactor database interactions

- Added `ca-certificates` installation to Dockerfile for improved network security.
- Updated health check command in Dockerfile to include better timeout handling.
- Refactored `run_helper.py` to implement proper signal handling and logging during shutdown.
- Transitioned database operations to an asynchronous model in `async_db.py`, improving performance and responsiveness.
- Updated database schema to support new foreign key relationships and optimized indexing for better query performance.
- Enhanced various bot handlers to utilize async database methods, improving overall efficiency and user experience.
- Removed obsolete database and fix scripts to streamline the project structure.

helper_bot/scripts/monitor_bot.sh

@@ -0,0 +1,124 @@
+#!/bin/bash
+
+# Script for monitoring and auto-restarting the Telegram bot
+# Usage: ./monitor_bot.sh
+
+set -e
+
+# Configuration
+BOT_CONTAINER="telegram-helper-bot"
+HEALTH_ENDPOINT="http://localhost:8080/health"
+CHECK_INTERVAL=60  # seconds
+MAX_FAILURES=3
+LOG_FILE="logs/bot_monitor.log"
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+# Logging function
+log() {
+    echo "$(date '+%Y-%m-%d %H:%M:%S') - $1" | tee -a "$LOG_FILE"
+}
+
+# Check if container is running
+check_container_running() {
+    if docker ps --format "table {{.Names}}" | grep -q "^${BOT_CONTAINER}$"; then
+        return 0
+    else
+        return 1
+    fi
+}
+
+# Check health endpoint
+check_health() {
+    if curl -f --connect-timeout 5 --max-time 10 "$HEALTH_ENDPOINT" >/dev/null 2>&1; then
+        return 0
+    else
+        return 1
+    fi
+}
+
+# Restart container
+restart_container() {
+    log "${YELLOW}Restarting container ${BOT_CONTAINER}...${NC}"
+    
+    if docker restart "$BOT_CONTAINER" >/dev/null 2>&1; then
+        log "${GREEN}Container restarted successfully${NC}"
+        
+        # Wait for container to be ready
+        log "Waiting for container to be ready..."
+        sleep 30
+        
+        # Check if container is healthy
+        local attempts=0
+        while [ $attempts -lt 10 ]; do
+            if check_health; then
+                log "${GREEN}Container is healthy after restart${NC}"
+                return 0
+            fi
+            attempts=$((attempts + 1))
+            sleep 10
+        done
+        
+        log "${RED}Container failed to become healthy after restart${NC}"
+        return 1
+    else
+        log "${RED}Failed to restart container${NC}"
+        return 1
+    fi
+}
+
+# Main monitoring loop
+main() {
+    log "${GREEN}Starting bot monitoring...${NC}"
+    log "Container: $BOT_CONTAINER"
+    log "Health endpoint: $HEALTH_ENDPOINT"
+    log "Check interval: ${CHECK_INTERVAL}s"
+    log "Max failures: $MAX_FAILURES"
+    
+    local failure_count=0
+    
+    while true; do
+        # Check if container is running
+        if ! check_container_running; then
+            log "${RED}Container $BOT_CONTAINER is not running!${NC}"
+            if restart_container; then
+                failure_count=0
+            else
+                failure_count=$((failure_count + 1))
+            fi
+        else
+            # Check health endpoint
+            if check_health; then
+                if [ $failure_count -gt 0 ]; then
+                    log "${GREEN}Container recovered, resetting failure count${NC}"
+                    failure_count=0
+                fi
+                log "${GREEN}Container is healthy${NC}"
+            else
+                failure_count=$((failure_count + 1))
+                log "${YELLOW}Health check failed (${failure_count}/${MAX_FAILURES})${NC}"
+                
+                if [ $failure_count -ge $MAX_FAILURES ]; then
+                    log "${RED}Max failures reached, restarting container${NC}"
+                    if restart_container; then
+                        failure_count=0
+                    else
+                        log "${RED}Failed to restart container after max failures${NC}"
+                    fi
+                fi
+            fi
+        fi
+        
+        sleep "$CHECK_INTERVAL"
+    done
+}
+
+# Handle script interruption
+trap 'log "Monitoring stopped by user"; exit 0' INT TERM
+
+# Run main function
+main "$@"