import groovy.json.JsonSlurper

def resultHtml = '' // 初始化一个变量来存储最终的 HTML

try {
    // --- 1. 参数处理 ---
    def rawInput = IMAGE_NAME ?: ''
    def pureTag = rawInput.split(/\s*\|\s*/)[0].trim()

    if (!pureTag) {
        resultHtml = '<div style="color: gray; font-style: italic;">(请选择镜像 tag)</div>'
        return resultHtml // 立即返回
    }

    // --- 2. 硬编码凭据 ---
    def user = '100038894437' // 你的 TCR 用户名 (UIN)
    def pass = 'h8H1o6Fd!HLXn' // 你的 TCR 登录密码

    if (!user || !pass) {
        resultHtml = '<div style="color: red;">❌ 凭据为空</div>'
        return resultHtml // 立即返回
    }

    // --- 3. API 查询 ---
    final String REG = "https://uswccr.ccs.tencentyun.com"
    final String REPO = "lessiesit/flymoon-email"

    // 3.1. Token
    def auth = "Basic " + "${user}:${pass}".bytes.encodeBase64().toString()
    def tokenUrl = new URL("${REG}/service/token?service=uswccr&scope=repository:${REPO}:pull")
    def tokenConn = tokenUrl.openConnection()
    tokenConn.setRequestProperty("Authorization", auth)
    tokenConn.connect()

    if (tokenConn.responseCode != 200) {
        def errorBody = tokenConn.errorStream?.text ?: "No error body"
        resultHtml = "<div style='color: red;'>❌ Token 请求失败 (${tokenConn.responseCode}): ${errorBody.take(200)}</div>"
        return resultHtml // 立即返回
    }

    def tokenJson = new JsonSlurper().parse(tokenConn.inputStream)
    def token = tokenJson?.token

    if (!token) {
        resultHtml = '<div style="color: red;">❌ 无法从响应中获取 Token</div>'
        return resultHtml // 立即返回
    }

    // 3.2. Manifest
    def manifestUrl = new URL("${REG}/v2/${REPO}/manifests/${pureTag}")
    def manifestConn = manifestUrl.openConnection()
    manifestConn.setRequestProperty("Authorization", "Bearer ${token}")
    manifestConn.setRequestProperty("Accept", "application/vnd.docker.distribution.manifest.v2+json")
    manifestConn.connect()

    if (manifestConn.responseCode != 200) {
        if (manifestConn.responseCode == 404) {
            resultHtml = "<div style='color: orange;'>⚠️ Tag '${pureTag}' 不存在</div>"
            return resultHtml // 立即返回
        }
        def errorBody = manifestConn.errorStream?.text ?: "No error body"
        resultHtml = "<div style='color: red;'>❌ Manifest 请求失败 (${manifestConn.responseCode}): ${errorBody.take(200)}</div>"
        return resultHtml // 立即返回
    }

    def manifestJson = new JsonSlurper().parse(manifestConn.inputStream)
    def configDigest = manifestJson?.config?.digest

    if (!configDigest) {
        resultHtml = '<div style="color: red;">❌ Manifest 中无 config.digest</div>'
        return resultHtml // 立即返回
    }

    // 3.3. Config Blob (Labels)
    def blobUrl = new URL("${REG}/v2/${REPO}/blobs/${configDigest}")
    def blobConn = blobUrl.openConnection()
    blobConn.setRequestProperty("Authorization", "Bearer ${token}")
    blobConn.connect()

    if (blobConn.responseCode != 200) {
        def errorBody = blobConn.errorStream?.text ?: "No error body"
        resultHtml = "<div style='color: red;'>❌ Config Blob 请求失败 (${blobConn.responseCode}): ${errorBody.take(200)}</div>"
        return resultHtml // 立即返回
    }

    def configJson = new JsonSlurper().parse(blobConn.inputStream)
    def labels = configJson?.config?.Labels ?: [:]

    // --- 4. 格式化输出 ---
    // 再次确保 labels 是 Map
    if (!(labels instanceof Map)) {
        labels = [:]
    }

    resultHtml = "<div style='font-family: monospace; font-size: 12px; padding: 5px; border: 1px solid #ccc; background-color: #f9f9f9;'><strong>🏷️ Labels for ${pureTag}:</strong><br/>"
    if (labels.isEmpty()) {
        resultHtml += "<em>（无 Labels）</em><br/>"
    } else {
        labels.each { k, v ->
            def key = (k != null) ? k.toString() : 'null_key'
            def value = (v != null) ? v.toString().replaceAll(/^'|'$/, '') : 'null_value'
            resultHtml += "<strong>${key}:</strong> ${value}<br/>"
        }
    }
    resultHtml += "</div>"

    // ✅ 修复：在 try 块结束前，确保 resultHtml 是字符串
    resultHtml = resultHtml.toString()

} catch (Exception e) {
    def errorMsg = e.message?.toString() ?: '未知错误'
    def errorClass = e.class.simpleName
    resultHtml = "<div style='color: red;'>🚨 脚本异常: ${errorClass} - ${errorMsg}</div>"
}

// ✅ 修复：确保在所有路径下，最终返回的都是字符串
return resultHtml.toString()