#!/bin/sh

# 公共变量
VERSION_FILE="/app/version.txt"
MIXAPI_BIN="/app/mixapi"
MIXAPI_NEW="/app/mixapi.new"
UPDATE_SCRIPT="/app/check_update.sh"
CRON_FILE="/var/spool/cron/crontabs/root"
DEFAULT_VERSION="v1.2"

# 支持通过环境变量 GITHUB_PROXY 设置代理
# 海外版本默认不使用代理，如需代理可设置环境变量
if [ -n "$GITHUB_PROXY" ]; then
    GITHUB_API_URL="${GITHUB_PROXY}/https://api.github.com/repos/aiprodcoder/MIXAPI/releases/latest"
    GITHUB_DOWNLOAD_BASE="${GITHUB_PROXY}/https://github.com/aiprodcoder/MIXAPI/releases/download"
else
    GITHUB_API_URL="https://api.github.com/repos/aiprodcoder/MIXAPI/releases/latest"
    GITHUB_DOWNLOAD_BASE="https://github.com/aiprodcoder/MIXAPI/releases/download"
fi

# 获取最新版本号
get_latest_version() {
    wget -qO- "$GITHUB_API_URL" | sed -n 's/.*"tag_name":[[:space:]]*"\([^"]*\)".*/\1/p'
}

# 获取下载URL
get_download_url() {
    local version=$1
    local arch="$(uname -m)"
    
    case "$arch" in
        'x86_64')
            echo "${GITHUB_DOWNLOAD_BASE}/${version}/mixapi-${version}-linux-amd64"
            ;;
        'aarch64')
            echo "${GITHUB_DOWNLOAD_BASE}/${version}/mixapi-${version}-linux-arm64"
            ;;
        *)
            echo ""
            ;;
    esac
}

# 下载指定版本
# 参数: $1=版本号, $2=目标文件路径
download_version() {
    local version=$1
    local target=$2
    local url=$(get_download_url "$version")
    
    if [ -z "$url" ]; then
        echo "不支持的架构: $(uname -m)"
        return 1
    fi
    
    echo "下载地址: ${url}"
    wget -qO "$target" "$url"
    
    if [ $? -eq 0 ] && [ -s "$target" ]; then
        chmod +x "$target"
        return 0
    else
        rm -f "$target"
        return 1
    fi
}

# 获取当前版本
get_current_version() {
    if [ -f "$VERSION_FILE" ]; then
        cat "$VERSION_FILE"
    else
        echo ""
    fi
}

# 保存版本号
save_version() {
    echo "$1" > "$VERSION_FILE"
}

# 查找 mixapi 进程 PID
find_mixapi_pid() {
    local pid=""
    pid=$(ps aux 2>/dev/null | grep "$MIXAPI_BIN" | grep -v grep | awk '{print $1}' | head -1)
    if [ -z "$pid" ]; then
        # busybox ps 格式不同，尝试另一种方式
        pid=$(ps | grep "$MIXAPI_BIN" | grep -v grep | awk '{print $1}' | head -1)
    fi
    echo "$pid"
}