#!/bin/sh

# ====== КОНФИГУРАЦИЯ ======

# Формат: "URL|ЛОКАЛЬНЫЙ_ПУТЬ"
# Добавляйте сколько угодно пар
FILES="
https://gitea.vchikalkin.dev/admin/keenetic-configs/raw/branch/master/opt/etc/nfqws/user.list|/opt/etc/nfqws/user.list
https://gitea.vchikalkin.dev/admin/keenetic-configs/raw/branch/master/opt/etc/nfqws/ipset.list|/opt/etc/nfqws/ipset.list
https://gitea.vchikalkin.dev/admin/keenetic-configs/raw/branch/master/opt/etc/nfqws/nfqws.conf|/opt/etc/nfqws/nfqws.conf
https://gitea.vchikalkin.dev/admin/keenetic-configs/raw/branch/master/opt/etc/xkeen/ip_exclude.lst|/opt/etc/xkeen/ip_exclude.lst
https://gitea.vchikalkin.dev/admin/keenetic-configs/raw/branch/master/opt/etc/xkeen/port_exclude.lst|/opt/etc/xkeen/port_exclude.lst
https://gitea.vchikalkin.dev/admin/keenetic-configs/raw/branch/master/opt/etc/xkeen/port_proxying.lst|/opt/etc/xkeen/port_proxying.lst
https://gitea.vchikalkin.dev/admin/keenetic-configs/raw/branch/master/opt/etc/xray/configs/01_log.json|/opt/etc/xray/configs/01_log.json
https://gitea.vchikalkin.dev/admin/keenetic-configs/raw/branch/master/opt/etc/xray/configs/02_dns.json|/opt/etc/xray/configs/02_dns.json
https://gitea.vchikalkin.dev/admin/keenetic-configs/raw/branch/master/opt/etc/xray/configs/03_inbounds.json|/opt/etc/xray/configs/03_inbounds.json
https://gitea.vchikalkin.dev/admin/keenetic-configs/raw/branch/master/opt/etc/xray/configs/04_outbounds.json|/opt/etc/xray/configs/04_outbounds.json
https://gitea.vchikalkin.dev/admin/keenetic-configs/raw/branch/master/opt/etc/xray/configs/05_routing.json|/opt/etc/xray/configs/05_routing.json
https://gitea.vchikalkin.dev/admin/keenetic-configs/raw/branch/master/opt/etc/xray/configs/06_policy.json|/opt/etc/xray/configs/06_policy.json
https://gitea.vchikalkin.dev/admin/keenetic-configs/raw/branch/master/opt/etc/xray/configs/07_observatory.json|/opt/etc/xray/configs/07_observatory.json
"

RESTART_CMD="/opt/etc/init.d/rc.unslung restart"
LOG="/opt/var/log/update_files.log"
TMP_DIR="/opt/tmp"

# ====== ЛОГИКА ======

mkdir -p "$TMP_DIR"
CHANGED=0
TIMESTAMP=$(date '+%Y-%m-%d %H:%M:%S')

for entry in $FILES; do
    # Пропускаем пустые строки
    [ -z "$entry" ] && continue

    URL=$(echo "$entry" | cut -d'|' -f1)
    LOCAL=$(echo "$entry" | cut -d'|' -f2)

    [ -z "$URL" ] || [ -z "$LOCAL" ] && continue

    TMP_FILE="$TMP_DIR/update_$(echo "$LOCAL" | md5sum | cut -d' ' -f1).tmp"

    # Скачиваем
    wget -q -O "$TMP_FILE" "$URL" 2>/dev/null

    if [ $? -ne 0 ]; then
        echo "$TIMESTAMP [ERROR] Не удалось скачать: $URL" >> "$LOG"
        rm -f "$TMP_FILE"
        continue
    fi

    # Проверяем что файл не пустой
    if [ ! -s "$TMP_FILE" ]; then
        echo "$TIMESTAMP [WARN] Пустой файл: $URL" >> "$LOG"
        rm -f "$TMP_FILE"
        continue
    fi

    # Сравниваем с текущим
    NEED_UPDATE=0

    if [ ! -f "$LOCAL" ]; then
        # Файла ещё нет
        NEED_UPDATE=1
    else
        # Сравниваем контрольные суммы
        OLD_SUM=$(md5sum "$LOCAL" 2>/dev/null | cut -d' ' -f1)
        NEW_SUM=$(md5sum "$TMP_FILE" | cut -d' ' -f1)

        if [ "$OLD_SUM" != "$NEW_SUM" ]; then
            NEED_UPDATE=1
        fi
    fi

    if [ "$NEED_UPDATE" -eq 1 ]; then
        # Создаём директорию если нет
        mkdir -p "$(dirname "$LOCAL")"
        cp "$TMP_FILE" "$LOCAL"
        CHANGED=1
        echo "$TIMESTAMP [UPDATED] $LOCAL <- $URL" >> "$LOG"
    fi

    rm -f "$TMP_FILE"
done

# Перезапуск только если что-то изменилось
if [ "$CHANGED" -eq 1 ]; then
    echo "$TIMESTAMP [RESTART] Перезапуск Entware..." >> "$LOG"
    $RESTART_CMD >> "$LOG" 2>&1
    echo "$TIMESTAMP [RESTART] Готово" >> "$LOG"
else
    echo "$TIMESTAMP [OK] Изменений нет" >> "$LOG"
fi

# Ротация лога (оставляем последние 200 строк)
if [ -f "$LOG" ]; then
    LINES=$(wc -l < "$LOG")
    if [ "$LINES" -gt 200 ]; then
        tail -100 "$LOG" > "$LOG.tmp"
        mv "$LOG.tmp" "$LOG"
    fi
fi