feat: add daily.dev user validation functionality (#326)

Author: KagemaNjoroge

user_scanner/user_scan/dev/daily_dev.py

@@ -0,0 +1,57 @@
+import json
+import re
+
+from user_scanner.core.helpers import get_random_user_agent
+from user_scanner.core.orchestrator import generic_validate
+from user_scanner.core.result import Result
+
+
+NEXT_DATA_PATTERN = re.compile(
+    r'<script id="__NEXT_DATA__" type="application/json">(.*?)</script>',
+    re.DOTALL,
+)
+
+
+def _extract_next_data(html: str) -> dict | None:
+    match = NEXT_DATA_PATTERN.search(html)
+    if not match:
+        return None
+
+    try:
+        data = json.loads(match.group(1))
+    except json.JSONDecodeError:
+        return None
+
+    return data if isinstance(data, dict) else None
+
+
+def validate_daily_dev(user):
+    url = f"https://app.daily.dev/{user}"
+    show_url = f"https://app.daily.dev/{user}"
+
+    headers = {
+        "User-Agent": get_random_user_agent(),
+    }
+
+    def process(response):
+        next_data = _extract_next_data(response.text)
+        if next_data is None:
+            return Result.error(
+                "Could not read __NEXT_DATA__ payload, report it via GitHub issues."
+            )
+
+        page_props = next_data.get("props", {}).get("pageProps", {})
+        user_data = page_props.get("user")
+
+        if isinstance(user_data, dict):
+            if user_data.get("id") and user_data.get("name"):
+                return Result.taken()
+
+        if page_props.get("noindex") is True:
+            return Result.available()
+
+        return Result.error(
+            "Unexpected daily.dev payload shape, report it via GitHub issues."
+        )
+
+    return generic_validate(url, process, show_url=show_url, headers=headers)