#!/usr/bin/env python3
"""Fetch open Google Tasks count for the daily briefing (fallback helper)."""
import json, urllib.request, urllib.parse
from pathlib import Path

HERMES = Path.home() / ".hermes"
TOKEN_PATH = HERMES / "google_token.json"
CLIENT_PATH = HERMES / "google_client_secret.json"
SCOPES = ["https://www.googleapis.com/auth/tasks.readonly"]

def get_access_token():
    # Try a refresh that explicitly requests the tasks scope
    tok = json.loads(TOKEN_PATH.read_text())
    client = json.loads(CLIENT_PATH.read_text())
    c = client.get("installed", client.get("web", {}))
    data = urllib.parse.urlencode({
        "client_id": c["client_id"], "client_secret": c["client_secret"],
        "refresh_token": tok["refresh_token"], "grant_type": "refresh_token"}).encode()
    resp = urllib.request.urlopen(urllib.request.Request(
        "https://oauth2.googleapis.com/token", data=data), timeout=20)
    payload = json.loads(resp.read())
    import sys
    print("GRANTED_SCOPES: " + payload.get("scope", "(none reported)"), file=sys.stderr)
    return payload["access_token"]

def main():
    if not TOKEN_PATH.exists():
        print(json.dumps({"error": "no_token_file"})); return
    tok = json.loads(TOKEN_PATH.read_text())
    headers = {"Authorization": "Bearer " + get_access_token()}
    try:
        lists = json.loads(urllib.request.urlopen(urllib.request.Request(
            "https://tasks.googleapis.com/tasks/v1/users/@me/lists", headers=headers), timeout=20
        ).read()).get("items", [])
    except urllib.error.HTTPError as e:
        print(json.dumps({"error": "http_%s" % e.code,
                          "body": e.read().decode(errors="replace")[:500],
                          "saved_scope": tok.get("scope", "")}, ensure_ascii=False))
        return
    total, details = 0, []
    for lst in lists:
        u = ("https://tasks.googleapis.com/tasks/v1/lists/%s/tasks"
             "?maxResults=50&showCompleted=false&showHidden=false" % lst["id"])
        try:
            items = json.loads(urllib.request.urlopen(
                urllib.request.Request(u, headers=headers), timeout=20
            ).read()).get("items", [])
        except Exception:
            items = []
        total += len(items)
        for t in items[:10]:
            details.append({"list": lst.get("title", "?"),
                            "title": t.get("title", ""),
                            "due": t.get("due", "")})
    print(json.dumps({"tasks": total, "details": details}, ensure_ascii=False))

if __name__ == "__main__":
    main()