bash_functions

# ~/.bash_functions

sys() {
    # ── Colors ────────────────────────────────────────────
    local R=$'\e[0m'
    local B=$'\e[1m'
    local DIM=$'\e[2m'
    local CYA=$'\e[38;5;110m'
    local WHT=$'\e[38;5;255m'
    local LBL=$'\e[38;5;250m'
    local YEL=$'\e[38;5;179m'
    local GRN=$'\e[38;5;108m'
    local RED=$'\e[38;5;167m'
    local MAG=$'\e[38;5;183m'
    local SEP=$'\e[38;5;59m'

    # ── Collect stats ──────────────────────────────────────
    read load1 _ _ _ < /proc/loadavg

    local cpu_pct
    cpu_pct=$(awk '/^cpu /{u=$2+$4; t=$2+$3+$4+$5; printf "%.0f", u*100/t}' /proc/stat)

    local mem_pct mem_used mem_total
    read mem_total mem_used < <(free -m | awk '/Mem:/{print $2, $3}')
    mem_pct=$(awk "BEGIN{printf \"%.0f\", ($mem_used/$mem_total)*100}")

    local disk_pct
    disk_pct=$(df / | awk 'NR==2{gsub(/%/,"",$5); print $5}')

    local up_str
    up_str=$(awk '{
        s = int($1)
        d = int(s/86400); s -= d*86400
        h = int(s/3600);  s -= h*3600
        m = int(s/60)
        if (d) printf "%dd %dh %dm", d, h, m
        else if (h) printf "%dh %dm", h, m
        else printf "%dm", m
    }' /proc/uptime)

    local next_backup
    next_backup=$(systemctl show borgmatic.timer --property=NextElapseUSecRealtime | cut -d= -f2 | awk '{print $1, $2}')

    # ── Threshold colors ───────────────────────────────────
    local cpu_col ram_col dsk_col

    if   [ "$cpu_pct" -ge 80 ]; then cpu_col="$RED"
    elif [ "$cpu_pct" -ge 50 ]; then cpu_col="$YEL"
    else                              cpu_col="$GRN"
    fi

    if   [ "$mem_pct" -ge 80 ]; then ram_col="$RED"
    elif [ "$mem_pct" -ge 60 ]; then ram_col="$YEL"
    else                              ram_col="$GRN"
    fi

    if   [ "$disk_pct" -ge 80 ]; then dsk_col="$RED"
    elif [ "$disk_pct" -ge 50 ]; then dsk_col="$YEL"
    else                              dsk_col="$GRN"
    fi

    # ── Header ─────────────────────────────────────────────
    printf "\n"
    printf "${SEP}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${R}\n"
    printf "${CYA}${B}  󰒋  System Dashboard${R}\n"
    printf "${SEP}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${R}\n"

    # ── Status bar ─────────────────────────────────────────
    printf "\n"
    printf "  ${cpu_col}󰻠 ${B}${cpu_pct}%%${R}  "
    printf "${SEP}│${R}  "
    printf "${ram_col}󰍛 ${B}${mem_pct}%%${R}  "
    printf "${SEP}│${R}  "
    printf "${dsk_col}󰋊 ${B}${disk_pct}%%${R}  "
    printf "${SEP}│${R}  "
    printf "${LBL}󰾆 ${WHT}${load1}${R}  "
    printf "${SEP}│${R}  "
    printf "${LBL}󰅐 ${WHT}${up_str}${R}  "
    printf "${SEP}│${R}  "
    printf "${CYA}󰃰 ${WHT}${next_backup}${R}\n"

    # ── Storage ────────────────────────────────────────────
    printf "\n  ${CYA}${B}󰋊  Storage${R}\n"
    printf "  ${SEP}───────────────────────────────────────────────────${R}\n"

    df -hT -x tmpfs -x devtmpfs | awk \
        -v R="$R" -v DIM="$DIM" \
        -v CYA="$CYA" -v WHT="$WHT" -v LBL="$LBL" \
        -v YEL="$YEL" -v GRN="$GRN" -v RED="$RED" \
        -v MAG="$MAG" -v SEP="$SEP" '
    $2 ~ /^(ext4|btrfs|xfs)$/ {
        gsub(/%/, "", $6)
        pct = $6 + 0

        if (pct < 50)      col = GRN
        else if (pct < 80) col = YEL
        else               col = RED

        bar = ""
        n = int(pct / 5)
        for (i = 0; i < 20; i++)
            bar = bar (i < n ? "█" : "░")

        if ($7 == "/") {
            icon  = "󰋊"
            label = "OS SSD"
        } else {
            icon  = "󰉖"
            label = "DATA SSD"
        }

        printf "  %s%s %-10s%s  %s%-5s%s  %ssize%s %-7s  %sused%s %-7s  %sfree%s %-7s  %s[%s]%s %s%3s%%%s  %s%s%s\n",
            MAG, icon, label, R,
            DIM, $2, R,
            LBL, WHT, $3,
            LBL, WHT, $4,
            LBL, WHT, $5,
            col, bar, R,
            col, pct, R,
            SEP, $7, R
    }'

    # ── Temperatures ───────────────────────────────────────
    printf "\n  ${CYA}${B}󱃃  Temperatures${R}\n"
    printf "  ${SEP}───────────────────────────────────────────────────${R}\n"

    local labels=("OS SSD" "DATA SSD")
    local i=0

    for disk in /dev/nvme0n1 /dev/nvme1n1; do
        local raw temp_c

        raw=$(sudo nvme smart-log "$disk" 2>/dev/null | grep -i '^temperature')

        if echo "$raw" | grep -qi 'celsius\|°C'; then
            temp_c=$(echo "$raw" | grep -oE '[0-9]+' | head -n1)
        elif echo "$raw" | grep -qi 'fahrenheit\|°F'; then
            local f
            f=$(echo "$raw" | grep -oE '[0-9]+' | head -n1)
            [ -n "$f" ] && temp_c=$(awk "BEGIN{printf \"%.0f\", ($f-32)*5/9}")
        else
            temp_c=$(echo "$raw" | grep -oE '[0-9]+' | head -n1)
        fi

        local t_col
        if   [ "${temp_c:-0}" -ge 65 ]; then t_col="$RED"
        elif [ "${temp_c:-0}" -ge 50 ]; then t_col="$YEL"
        else                                  t_col="$GRN"
        fi

        local fill=0 bar=""
        [ -n "$temp_c" ] && fill=$(( (temp_c < 100 ? temp_c : 99) * 20 / 100 ))
        for (( j=0; j<20; j++ )); do
            [ $j -lt $fill ] && bar+="█" || bar+="░"
        done

        printf "  ${CYA}󰋊 ${MAG}%-10s${R}  ${t_col}${B}%s°C${R}  ${DIM}[${t_col}%s${DIM}]${R}\n" \
            "${labels[$i]}" "${temp_c:---}" "$bar"

        (( i++ ))
    done

    # ── Footer ─────────────────────────────────────────────
    printf "\n${SEP}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${R}\n\n"
}