项目初始化

bot/browser_env.py

@@ -0,0 +1,49 @@
+"""浏览器场景变量替换与 base URL 解析。"""
+
+from __future__ import annotations
+
+import re
+from urllib.parse import urlparse
+
+import env_config
+
+_VAR_PATTERN = re.compile(r"\{\{([A-Z0-9_]+)\}\}")
+
+
+def interpolate(value: str) -> str:
+    def repl(match: re.Match[str]) -> str:
+        key = match.group(1)
+        resolved = env_config.env(key)
+        if resolved is None:
+            raise RuntimeError(f"场景变量未配置：{key}")
+        return resolved
+
+    return _VAR_PATTERN.sub(repl, value)
+
+
+def default_base_url() -> str:
+    explicit = (env_config.env("PREVIEW_BASE_URL") or "").strip()
+    if explicit:
+        return interpolate(explicit.rstrip("/"))
+
+    preview = (env_config.env("PREVIEW_URL") or "").strip()
+    if preview:
+        parsed = urlparse(preview)
+        scheme = parsed.scheme or "http"
+        host = parsed.hostname or "127.0.0.1"
+        port = parsed.port
+        if port and port not in (80, 443):
+            return f"{scheme}://{host}:{port}"
+        return f"{scheme}://{host}"
+
+    port = env_config.env("PREVIEW_PORT", "5173") or "5173"
+    return f"http://127.0.0.1:{port}"
+
+
+def resolve_url(base_url: str, target: str) -> str:
+    target = interpolate(target.strip())
+    if target.startswith("http://") or target.startswith("https://"):
+        return target
+    if not target.startswith("/"):
+        target = "/" + target
+    return base_url.rstrip("/") + target