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sync.sh
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#!/bin/bash
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# === 配置 ===
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# WebDAV设置 (会自动读取环境变量)
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WEBDAV_URL=${WEBDAV_URL%/}
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FULL_WEBDAV_URL="${WEBDAV_URL}"
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TEMP_DIR="/tmp/backup_temp"
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# 指定要备份的文件名
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TARGET_FILE="accounts.json"
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# 指定工作目录 (Docker内项目通常在 /app 或 /home/node/app)
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WORK_DIR=$(pwd)
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# 日志函数
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log() { echo "[Backup] [$(date '+%H:%M:%S')] $1"; }
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# === 检查环境变量 ===
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if [[ -z "$WEBDAV_URL" ]]; then
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log "未设置 WEBDAV_URL,跳过备份功能"
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exit 0
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fi
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# === 准备环境 ===
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mkdir -p $TEMP_DIR
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# 安装依赖 (如果镜像里没有)
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if ! command -v curl &> /dev/null; then
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log "安装 curl..."
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apt-get update && apt-get install -y curl || apk add --no-cache curl
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fi
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# === 1. 恢复备份 (启动时运行一次) ===
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download_backup() {
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log "正在检查远程备份..."
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# 获取最新的备份文件名 (简单粗暴的方法:假设你只存最新的或者手动管理,这里简化为尝试下载固定名字或最新时间戳)
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# 为了简化逻辑,我们这里尝试下载 'latest_accounts.json' 或者列出文件
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# 这里使用 curl 列出文件比较麻烦,我们简化逻辑:只下载/上传名为 accounts_backup.json 的文件
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# 这样永远保持一份最新备份,避免空间满
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REMOTE_FILE="$FULL_WEBDAV_URL/antigravity_accounts.json"
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log "尝试下载: $REMOTE_FILE"
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HTTP_CODE=$(curl -s -o "$TEMP_DIR/restored.json" -w "%{http_code}" -u "$WEBDAV_USERNAME:$WEBDAV_PASSWORD" "$REMOTE_FILE")
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if [[ "$HTTP_CODE" == "200" ]]; then
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log "发现远程备份,正在恢复..."
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mv "$TEMP_DIR/restored.json" "$WORK_DIR/$TARGET_FILE"
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log "成功恢复 $TARGET_FILE"
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else
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log "未找到远程备份 (HTTP $HTTP_CODE),跳过恢复"
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fi
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}
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# === 2. 循环备份 ===
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loop_sync() {
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while true; do
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# 每 10 分钟检查一次 (600秒),Token 变动不频繁,不需要太快
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sleep 60
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if [ -f "$WORK_DIR/$TARGET_FILE" ]; then
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# 计算文件MD5,如果没有变化就不上传 (节省流量)
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# 这里简化:直接上传覆盖,文件很小
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log "正在上传备份..."
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REMOTE_FILE="$FULL_WEBDAV_URL/antigravity_accounts.json"
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HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code}" -u "$WEBDAV_USERNAME:$WEBDAV_PASSWORD" -T "$WORK_DIR/$TARGET_FILE" "$REMOTE_FILE")
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if [[ "$HTTP_CODE" == "201" ]] || [[ "$HTTP_CODE" == "204" ]] || [[ "$HTTP_CODE" == "200" ]]; then
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log "备份成功"
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else
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log "备份失败 (HTTP $HTTP_CODE)"
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fi
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else
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log "当前没有 $TARGET_FILE,跳过备份"
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fi
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done
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}
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# === 主流程 ===
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download_backup
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loop_sync
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