分页读取授权频道的消息历史

# 执行后核对返回 JSON 的业务状态；HTTP 200 仍可能包含业务错误。
curl --silent --show-error --fail-with-body \
  --request GET \
  --url "https://slack.com/api/conversations.history?channel=${SLACK_CHANNEL_ID}&limit=15" \
  --header "Authorization: Bearer ${SLACK_BOT_TOKEN}"

import json
import os
import re
import urllib.request
import urllib.error

def expand(value):
    return re.sub(r"\$\{([A-Z][A-Z0-9_]*)\}",
                  lambda match: os.environ[match.group(1)], value)

url = expand("https://slack.com/api/conversations.history?channel=${SLACK_CHANNEL_ID}&limit=15")
headers = {
    "Authorization": expand("Bearer ${SLACK_BOT_TOKEN}"),
}
data = None
request = urllib.request.Request(url, data=data, headers=headers, method="GET")
try:
    with urllib.request.urlopen(request, timeout=30) as response:
        result = json.load(response)
except urllib.error.HTTPError as error:
    print(f"HTTP {error.code}: {error.read().decode('utf-8', errors='replace')}")
    raise SystemExit(1)
print(json.dumps(result, ensure_ascii=False, indent=2))
if isinstance(result, dict) and "ok" in result and result["ok"] != True:
    raise SystemExit("平台返回业务错误，请结合下方排错说明检查响应")

// Node.js 22+，保存为 request.mjs 后运行 node request.mjs
function expand(value) {
  return value.replace(/\$\{([A-Z][A-Z0-9_]*)\}/g, (_, name) => {
    if (!process.env[name]) throw new Error(`缺少环境变量 ${name}`);
    return process.env[name];
  });
}

const url = expand("https://slack.com/api/conversations.history?channel=${SLACK_CHANNEL_ID}&limit=15");
const headers = Object.fromEntries(
  Object.entries({
  "Authorization": "Bearer ${SLACK_BOT_TOKEN}"
}).map(([key, value]) => [key, expand(value)])
);
const response = await fetch(url, {
  method: "GET",
  headers,
  signal: AbortSignal.timeout(30000),
});
const text = await response.text();
if (!response.ok) throw new Error(`HTTP ${response.status}: ${text}`);
const result = JSON.parse(text);
console.log(JSON.stringify(result, null, 2));
if (Object.hasOwn(result, "ok") && result["ok"] !== true) {
  throw new Error('平台返回业务错误，请结合下方排错说明检查响应');
}