编辑“︁Module:PageSummary”︁

local p = {}

function p.getSummaryAndImage(frame)
    local pageName = frame.args[1] or ""
    local title = mw.title.new(pageName)
    
    if not title or not title.exists then return "页面不存在" end
    local content = title:getContent()

    -- 1. 提取第一张图（用于单独显示）
    -- 匹配 [[File:名称...]] 
    local firstImage = string.match(content, "%[%[([Ff]ile:.-)[|%]]") or 
                       string.match(content, "%[%[([Ii]mage:.-)[|%]]") or
                       string.match(content, "%[%[(文件:.-)[|%]]") or
                       string.match(content, "%[%[(图像:.-)[|%]]")

    -- 2. 彻底清理正文
    local cleanText = content
    -- A. 移除所有图片链接，防止摘要中出现多余图片或图片残留的链接文本
    cleanText = string.gsub(cleanText, "%[%[[Ff]ile:.-%]%]", "")
    cleanText = string.gsub(cleanText, "%[%[[Ii]mage:.-%]%]", "")
    cleanText = string.gsub(cleanText, "%[%[文件:.-%]%]", "")
    cleanText = string.gsub(cleanText, "%[%[图像:.-%]%]", "")
    
    -- B. 移除模板、注释、引用
    cleanText = string.gsub(cleanText, "<ref.-</ref>", "")
    cleanText = string.gsub(cleanText, "<ref.->", "")
    cleanText = string.gsub(cleanText, "<!%-%-.-%-%->", "")
    local limit = 10
    while string.find(cleanText, "{{.-}}") and limit > 0 do
        cleanText = string.gsub(cleanText, "{{[^{}]+}}", "")
        limit = limit - 1
    end
    
    cleanText = mw.text.trim(cleanText)
    cleanText = string.gsub(cleanText, "\n", " ")

    -- 3. 智能截断：遇链接则延展
    local targetLen = 100
    local summary = ""
    local fullLen = mw.ustring.len(cleanText)

    if fullLen <= targetLen then
        summary = cleanText
    else
        summary = mw.ustring.sub(cleanText, 1, targetLen)
        local restText = mw.ustring.sub(cleanText, targetLen + 1)
        
        -- 链接延展逻辑
        local lastOpen = 0
        local lastClose = 0
        local tempPos = 0
        while true do
            local found = string.find(summary, "%[%[", tempPos + 1)
            if not found then break end
            lastOpen = found
            tempPos = found
        end
        tempPos = 0
        while true do
            local found = string.find(summary, "%]%]", tempPos + 1)
            if not found then break end
            lastClose = found
            tempPos = found
        end

        if lastOpen > lastClose then
            local endOfLink = string.find(restText, "%]%]")
            if endOfLink then
                summary = summary .. string.sub(restText, 1, endOfLink + 1)
            end
        end
        summary = summary .. "..."
    end

    -- 4. 维基百科原生风格渲染
    -- 使用 display: flow-root 确保容器包裹住浮动的缩略图
    local container = mw.html.create('div')
        :css({
            ['margin'] = '10px 0',
            ['padding'] = '10px',
            ['border'] = '1px solid #a2a9b1',
            ['background-color'] = '#f8f9fa',
            ['display'] = 'flow-root'
        })

    -- 直接渲染维基百科标准的缩略图 (右侧浮动)
    if firstImage then
        container:wikitext('[[' .. firstImage .. '|thumb|150px|right|link=' .. pageName .. ']]')
    end

    -- 标题
    container:tag('div')
        :css({
            ['font-size'] = '1.2em',
            ['font-weight'] = 'bold',
            ['margin-bottom'] = '5px',
            ['border-bottom'] = '1px solid #a2a9b1', -- 维基标题下划线
            ['padding-bottom'] = '2px'
        })
        :wikitext('[[' .. pageName .. ']]')

    -- 摘要
    container:tag('div')
        :css({ ['line-height'] = '1.6' })
        :wikitext(summary)

    return tostring(container)
end

return p