fix(script/v4.sh): error judgement of empty version string (#18)

* fix(script/v4.sh): error judgement of empty version string

- Fix an error in REAL_VERSION judgement on api failure
- Access real version from cli to ensure actual version is stored

* chore(v4.sh): simplify install logic

Author: elysia-best

script/v4.sh

@@ -670,19 +670,14 @@ INSTALL() {
   # 如果用户输入了代理地址，则使用代理拼接下载链接
   if [ -n "$proxy_input" ]; then
     GH_PROXY="$proxy_input"
-    GH_DOWNLOAD_URL="${GH_PROXY}https://github.com/OpenListTeam/OpenList/releases/download"
+    GH_DOWNLOAD_URL="${GH_PROXY}https://github.com/OpenListTeam/OpenList/releases/latest/download"
     echo -e "${GREEN_COLOR}已使用代理地址: $GH_PROXY${RES}"
   else
     # 如果不需要代理，直接使用默认链接
-    GH_DOWNLOAD_URL="https://github.com/OpenListTeam/OpenList/releases/download"
+    GH_DOWNLOAD_URL="https://github.com/OpenListTeam/OpenList/releases/latest/download"
     echo -e "${GREEN_COLOR}使用默认 GitHub 地址进行下载${RES}"
   fi
 
-  # 获取版本号
-  echo -e "${GREEN_COLOR}获取版本信息...${RES}"
-  REAL_VERSION=$(curl -s "https://api.github.com/repos/OpenListTeam/OpenList/releases/latest" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/' 2>/dev/null || echo "$VERSION_TAG")
-  GH_DOWNLOAD_URL="${GH_DOWNLOAD_URL}/${REAL_VERSION}"
-
   # 下载 OpenList 程序
   echo -e "\r\n${GREEN_COLOR}下载 OpenList ...${RES}"
 
@@ -719,6 +714,8 @@ INSTALL() {
   fi
 
   # 记录真实版本信息
+  VERSION_INFO=$($INSTALL_PATH/openlist version 2>&1)
+  REAL_VERSION=$(echo "$VERSION_INFO" | grep "^Version:" | sed 's/Version://' | tr -d ' ' | grep . || echo "$VERSION_TAG")
   echo "$REAL_VERSION" > "$VERSION_FILE"
   echo "$(date '+%Y-%m-%d %H:%M:%S')" >> "$VERSION_FILE"
 
@@ -828,27 +825,33 @@ UPDATE() {
         echo -e "${GREEN_COLOR}已使用代理地址: $GH_PROXY${RES}"
     else
         # 如果不需要代理，直接使用默认链接
+        GH_PROXY=""
         GH_DOWNLOAD_URL="https://github.com/OpenListTeam/OpenList/releases/download"
         echo -e "${GREEN_COLOR}使用默认 GitHub 地址进行下载${RES}"
     fi
 
     # 获取真实版本信息
     echo -e "${GREEN_COLOR}获取版本信息...${RES}"
-    REAL_VERSION=$(curl -s "https://api.github.com/repos/OpenListTeam/OpenList/releases/latest" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/' 2>/dev/null || echo "$VERSION_TAG")
+    REAL_VERSION=$(curl -s "https://api.github.com/repos/OpenListTeam/OpenList/releases/latest" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/' 2>/dev/null | grep . || echo "$VERSION_TAG")
 
-    # 检查当前版本
-    CURRENT_VERSION=""
-    if [ -f "$VERSION_FILE" ]; then
-        CURRENT_VERSION=$(head -n1 "$VERSION_FILE" 2>/dev/null)
-    fi
+    if [ "$REAL_VERSION" = "beta" ]; then
+        # 网络问题，获取失败，默认使用latest下载地址
+        echo -e "${YELLOW_COLOR}提示：获取最新版本信息失败，默认升级到latest版本！${RES}"
+        GH_DOWNLOAD_URL="${GH_PROXY}https://github.com/OpenListTeam/OpenList/releases/latest/download"
+    else
+        # 检查当前版本
+        CURRENT_VERSION=""
+        if [ -f "$VERSION_FILE" ]; then
+            CURRENT_VERSION=$(head -n1 "$VERSION_FILE" 2>/dev/null)
+        fi
 
-    if [ -n "$CURRENT_VERSION" ] && [ "$CURRENT_VERSION" = "$REAL_VERSION" ]; then
-        echo -e "${GREEN_COLOR}当前已是最新版本 ($CURRENT_VERSION)，无需更新${RES}"
-        return 0
+        if [ -n "$CURRENT_VERSION" ] && [ "$CURRENT_VERSION" = "$REAL_VERSION" ]; then
+            echo -e "${GREEN_COLOR}当前已是最新版本 ($CURRENT_VERSION)，无需更新${RES}"
+            return 0
+        fi
+        GH_DOWNLOAD_URL="${GH_DOWNLOAD_URL}/${REAL_VERSION}"
     fi
 
-    GH_DOWNLOAD_URL="${GH_DOWNLOAD_URL}/${REAL_VERSION}"
-
     # 停止 OpenList 服务
     echo -e "${GREEN_COLOR}停止 OpenList 进程${RES}\r\n"
     systemctl stop openlist
@@ -906,6 +909,8 @@ UPDATE() {
     fi
 
     # 更新真实版本信息
+    VERSION_INFO=$($INSTALL_PATH/openlist version 2>&1)
+    REAL_VERSION=$(echo "$VERSION_INFO" | grep "^Version:" | sed 's/Version://' | tr -d ' ' | grep . || echo "$REAL_VERSION")
     echo "$REAL_VERSION" > "$VERSION_FILE"
     echo "$(date '+%Y-%m-%d %H:%M:%S')" >> "$VERSION_FILE"