#!/bin/bash

################################################################################
# Acronis Trigger Backup
################################################################################
# Purpose: Trigger manual backups using acrocmd
# Features:
# - List available backup plans
# - Run backup for specific plan
# - Trigger ad-hoc backup
################################################################################

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
source "$SCRIPT_DIR/lib/common-functions.sh"
source "$SCRIPT_DIR/lib/system-detect.sh"

if [ "$EUID" -ne 0 ]; then
    print_error "This script must be run as root"
    exit 1
fi

clear
print_banner "Trigger Manual Backup"

echo ""

# Check if acrocmd is available
if [ ! -f "/usr/sbin/acrocmd" ]; then
    print_error "acrocmd command-line tool not found"
    echo ""
    press_enter
    exit 1
fi

# List available plans
echo -e "${BOLD}Available Backup Plans${NC}"
echo ""
echo "Querying backup plans from Acronis..."
echo ""

plan_output=$(/usr/sbin/acrocmd list plans 2>&1)

if echo "$plan_output" | grep -qi "error\|failed\|no plans"; then
    echo -e "${YELLOW}No backup plans found or error querying plans${NC}"
    echo ""
    echo "Possible reasons:"
    echo "  • No backup plans configured yet"
    echo "  • Agent not registered with Acronis Cloud"
    echo "  • Need to configure plans in web console first"
    echo ""
    echo -e "${CYAN}──────────────────────────────────────────────────────────────${NC}"
    echo ""
    echo -e "${BOLD}To Configure Backup Plans:${NC}"
    echo ""
    echo "1. Log in to Acronis web console"
    echo "2. Navigate to: Devices → Select this server"
    echo "3. Click 'Add protection plan'"
    echo "4. Configure backup settings and schedule"
    echo "5. Return here to trigger backups"
    echo ""
    press_enter
    exit 0
fi

echo "$plan_output"
echo ""
echo -e "${CYAN}──────────────────────────────────────────────────────────────${NC}"
echo ""
echo -e "${BOLD}Select a Plan to Backup:${NC}"
echo ""
echo "Enter the plan name or ID from the list above,"
echo "or press Enter to cancel and use web console instead."
echo ""
echo -n "Plan name/ID: "
read -r plan_id

if [ -z "$plan_id" ]; then
    echo ""
    echo -e "${BOLD}Use Web Console Instead${NC}"
    echo ""
    echo "To trigger backup via web console:"
    echo ""
    echo "1. Log in to Acronis web console"

    # Try to get cloud URL
    if [ -f "/etc/Acronis/Global.config" ]; then
        cloud_url=$(grep -oP 'CloudUrl[>=\"].*?https://[^\"<]+' /etc/Acronis/Global.config 2>/dev/null | grep -oP 'https://[^\"<]+' | head -1)
        if [ -n "$cloud_url" ]; then
            echo "   ${cloud_url}"
        fi
    fi

    echo ""
    echo "2. Navigate to: Devices → This server"
    echo "3. Click 'Back up now' button"
    echo "4. Monitor progress in real-time"
    echo ""
    press_enter
    exit 0
fi

# User selected a plan, proceed with backup type selection
echo ""
echo -e "${BOLD}Backup Type Selection${NC}"
        echo ""
        echo "Select backup type:"
        echo "  1) Auto (use plan's configured type)"
        echo "  2) Full backup"
        echo "  3) Incremental backup"
        echo "  4) Differential backup"
        echo ""
        echo -n "Select type [1]: "
        read -r backup_type_choice
        backup_type_choice="${backup_type_choice:-1}"

        BACKUP_FLAGS=""
        case "$backup_type_choice" in
            2)
                BACKUP_FLAGS="--backuptype=full"
                echo "  → Full backup selected"
                ;;
            3)
                BACKUP_FLAGS="--backuptype=incremental"
                echo "  → Incremental backup selected (faster, stores only changes)"
                ;;
            4)
                BACKUP_FLAGS="--backuptype=differential"
                echo "  → Differential backup selected (changes since last full)"
                ;;
            *)
                echo "  → Using plan's default backup type"
                ;;
        esac

        echo ""
        echo -e "${BOLD}Performance Options${NC}"
        echo ""
        echo -n "Enable performance optimizations? (y/n) [n]: "
        read -r opt_choice

        if [ "$opt_choice" = "y" ] || [ "$opt_choice" = "Y" ]; then
            echo ""
            echo "Available optimizations:"
            echo "  1) Lower compression (faster backup, larger size)"
            echo "  2) High priority (use more system resources)"
            echo "  3) Both"
            echo ""
            echo -n "Select [3]: "
            read -r perf_choice
            perf_choice="${perf_choice:-3}"

            case "$perf_choice" in
                1)
                    BACKUP_FLAGS="$BACKUP_FLAGS --compression=normal"
                    echo "  → Lower compression enabled"
                    ;;
                2)
                    BACKUP_FLAGS="$BACKUP_FLAGS --priority=high"
                    echo "  → High priority enabled"
                    ;;
                3)
                    BACKUP_FLAGS="$BACKUP_FLAGS --compression=normal --priority=high"
                    echo "  → Lower compression + high priority enabled"
                    ;;
            esac
        fi

        echo ""
        echo -e "${BOLD}Starting Backup...${NC}"
        echo ""
        echo "Plan: $plan_id"
        [ -n "$BACKUP_FLAGS" ] && echo "Options: $BACKUP_FLAGS"
        echo ""

        # Try to run backup
        if /usr/sbin/acrocmd backup run --plan "$plan_id" $BACKUP_FLAGS 2>&1; then
            echo ""
            print_success "Backup initiated successfully"
            echo ""
            echo "Monitor progress with 'Check Backup Status'"
        else
            echo ""
            print_error "Failed to start backup"
            echo ""
            echo "Check that:"
            echo "  • Plan ID/name is correct"
            echo "  • Agent is online and registered"
            echo "  • No conflicting backups running"
        fi

echo ""
press_enter