#!/bin/bash

# Default threshold or user argument
threshold=${1:-30}

# Fetch checkupdates once to prevent multiple network/disk calls
mapfile -t arch_list < <(checkupdates 2>/dev/null)
arch_updates=${#arch_list[@]}

# Count AUR updates safely
aur_updates=$(aur repo -u -d aur-local 2>/dev/null | wc -l)
updates=$((arch_updates + aur_updates))

# Check kernel running environment
running_kernel=$(uname -r)
is_lts=0; [[ $running_kernel == *lts* ]] && is_lts=1

# Convert the array to a single string for quick regex matching
arch_str="${arch_list[*]}"

# Check for custom package updates in the list
has_custom=0;     [[ $arch_str == *linux-custom* ]] && has_custom=1
has_custom_lts=0; [[ $arch_str == *linux-lts-custom* ]] && has_custom_lts=1

# Define localized logic for kernel checking
check_kernel_update() {
    local pkg=$1
    local item

    # Precise array element matching (avoids false-positive substring matches)
    for item in "${arch_list[@]}"; do
        if [[ "$item" == "$pkg "* ]]; then
            return 0 # Package found in the updates array, update is definitely available
        fi
    done

    # Fallback to vercmp if running kernel doesn't match the sync repo
    local repo_ver
    repo_ver=$(pacman -Si "$pkg" 2>/dev/null | awk -F': ' '/Version/ {print $2}')

    # Crucial Fix: vercmp returns > 0 ONLY if repo_ver is strictly newer than running_kernel
    if [[ -n $repo_ver ]] && (( $(vercmp "$repo_ver" "$running_kernel") > 0 )); then
        return 0
    fi
    return 1
}

# Evaluate Kernel notifications based on environment
if (( is_lts == 0 && has_custom == 0 )); then
    check_kernel_update "linux" && notify-send "Kernel update available" "Rebuild custom kernel"
elif (( is_lts == 1 && has_custom_lts == 0 )); then
    check_kernel_update "linux-lts" && notify-send "LTS Kernel update available" "Rebuild custom kernel"
fi


# Main updates notification threshold logic
if (( updates >= threshold )); then
    notify-send "Updates available" "Arch: $arch_updates, AUR: $aur_updates"

    # Directly check command availability inline (no function needed)
    if command -v git-monitor >/dev/null 2>&1; then
        notify-send "Check git packages" "Use git-monitor for git packages updates"
    fi

    if command -v fwupdmgr >/dev/null 2>&1; then
        notify-send "Check firmware" "Use fwupdmgr to check for firmware updates"
    fi
fi

