Wechat Multi

MIT License

Copyright (c) 2026 joeseesun

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

#!/bin/bash
# macOS WeChat Multi Instance Script
# Usage:
#   sudo ./wechat-2.sh auto --force
#   sudo ./wechat-2.sh multi 3 --force   # 多开3个副本
#   sudo ./wechat-2.sh rebuild --force   # 更新后自动重建所有副本

set -euo pipefail

# 颜色
RED='\033[0;31m'; GREEN='\033[0;32m'; YELLOW='\033[1;33m'; BLUE='\033[0;34m'; NC='\033[0m'

# 默认路径
WECHAT_APP="/Applications/WeChat.app"
DEST_DIR="/Applications"
BASE_APP_NAME="小绿书"
FORCE=0

require_cmd() {
    command -v "$1" >/dev/null 2>&1 || { echo -e "${RED}缺少命令: $1${NC}"; exit 1; }
}
for cmd in ditto codesign xattr /usr/libexec/PlistBuddy; do require_cmd "$cmd"; done

check_wechat() {
    if [ ! -d "$WECHAT_APP" ]; then
        echo -e "${RED}未找到微信: $WECHAT_APP${NC}"
        exit 1
    fi
    echo -e "${GREEN}✓ 检测到微信已安装${NC}"
}

remove_app() {
    local dest="$DEST_DIR/$1"
    if [ -d "$dest" ]; then
        if [ $FORCE -eq 1 ]; then
            sudo rm -rf "$dest"
        else
            read -p "是否删除并重新创建 $1? (y/n): " yn
            [[ $yn =~ ^[Yy]$ ]] && sudo rm -rf "$dest"
        fi
    fi
}

copy_wechat() {
    local app_name=$1
    sudo ditto "$WECHAT_APP" "$DEST_DIR/$app_name"
}

modify_bundle_id() {
    local app_name=$1
    local info_plist="$DEST_DIR/$app_name/Contents/Info.plist"
    local new_id="com.tencent.xinWeChat.dual.$RANDOM"
    sudo /usr/libexec/PlistBuddy -c "Set :CFBundleIdentifier $new_id" "$info_plist"
    sudo /usr/libexec/PlistBuddy -c "Set :CFBundleDisplayName $app_name" "$info_plist" || true
}

resign_app() {
    local app_name=$1
    local dest="$DEST_DIR/$app_name"
    sudo rm -rf "$dest/Contents/_CodeSignature" || true
    sudo xattr -dr com.apple.quarantine "$dest" || true
    sudo codesign --force --deep --sign - --timestamp=none "$dest"
}

start_apps() {
    shift
    for app_name in "$@"; do open -n "$DEST_DIR/$app_name"; sleep 1; done
}

kill_wechat() {
    pkill -f "WeChat" || true
}

# 查找已存在的小绿书副本
list_existing_apps() {
    ls "$DEST_DIR" | grep "^$BASE_APP_NAME[0-9]*\.app$" || true
}

main() {
    case "${1:-}" in
        setup)
            check_wechat
            remove_app "${BASE_APP_NAME}.app"
            copy_wechat "${BASE_APP_NAME}.app"
            modify_bundle_id "${BASE_APP_NAME}.app"
            resign_app "${BASE_APP_NAME}.app"
            ;;
        start)
            start_apps "WeChat.app" "${BASE_APP_NAME}.app"
            ;;
        auto)
            check_wechat
            remove_app "${BASE_APP_NAME}.app"
            copy_wechat "${BASE_APP_NAME}.app"
            modify_bundle_id "${BASE_APP_NAME}.app"
            resign_app "${BASE_APP_NAME}.app"
            start_apps "WeChat.app" "${BASE_APP_NAME}.app"
            ;;
        multi)
            local count=${2:-2}
            check_wechat
            for i in $(seq 1 "$count"); do
                local app_name="${BASE_APP_NAME}${i}.app"
                remove_app "$app_name"
                copy_wechat "$app_name"
                modify_bundle_id "$app_name"
                resign_app "$app_name"
            done
            start_apps $(for i in $(seq 1 "$count"); do echo "${BASE_APP_NAME}${i}.app"; done)
            ;;
        rebuild)
            check_wechat
            echo -e "${BLUE}检测到系统更新或微信更新，正在重建副本...${NC}"
            local apps=$(list_existing_apps)
            for app_name in $apps; do
                echo -e "${YELLOW}重建 $app_name ...${NC}"
                remove_app "$app_name"
                copy_wechat "$app_name"
                modify_bundle_id "$app_name"
                resign_app "$app_name"
            done
            echo -e "${GREEN}✓ 所有副本已重新生成${NC}"
            ;;
        -k|kill)
            kill_wechat
            ;;
        -h|--help|"")
            echo "用法: $0 {setup|start|auto|multi N|rebuild|kill} [--force]"
            ;;
        *)
            echo -e "${RED}未知参数: $1${NC}"
            exit 1
            ;;
    esac
}

for arg in "$@"; do [[ $arg == "--force" ]] && FORCE=1; done
main "$@"