#!/usr/bin/env python3
from __future__ import annotations

import json
import os
import hashlib
import subprocess
import urllib.error
import urllib.parse
import urllib.request
from functools import partial
from http import HTTPStatus
from http.server import SimpleHTTPRequestHandler, ThreadingHTTPServer
from datetime import datetime
from pathlib import Path
from zoneinfo import ZoneInfo

ROOT = Path(__file__).resolve().parents[1]
PUBLIC = ROOT / 'public'
DIGEST_ROOT = Path(os.environ.get('DORIS_DIGEST_DIR', '/home/fizzlepoof/.openclaw/workspace/doris-digest'))
DIGEST_FEEDBACK = DIGEST_ROOT / 'data' / 'feedback.json'
PAPERLESS_STATE = ROOT / 'data' / 'paperless_review_state.json'
DONETICK_SECRET = Path('/home/fizzlepoof/.openclaw/workspace/.secrets/donetick_secrets.json.enc')
DONETICK_KEY = Path('/home/fizzlepoof/.openclaw/workspace/.secrets/encryption.key')
GENERATOR = ROOT / 'bin' / 'generate_dashboard.py'
HOST = os.environ.get('HOST', '0.0.0.0')
PORT = int(os.environ.get('PORT', '8787'))
LOCAL_TZ = ZoneInfo('America/Chicago')


def load_json(path: Path, default):
    try:
        return json.loads(path.read_text()) if path.exists() else default
    except Exception:
        return default


def save_json(path: Path, value) -> None:
    path.parent.mkdir(parents=True, exist_ok=True)
    path.write_text(json.dumps(value, indent=2) + '\n')


def decrypt_donetick() -> dict | None:
    if not DONETICK_SECRET.exists() or not DONETICK_KEY.exists():
        return None
    try:
        res = subprocess.run([
            'openssl','enc','-aes-256-cbc','-d','-pbkdf2',
            '-in',str(DONETICK_SECRET),
            '-k',DONETICK_KEY.read_text().strip(),
        ], capture_output=True, text=True, timeout=8, check=True)
        return json.loads(res.stdout).get('donetick')
    except Exception:
        return None


def donetick_headers() -> tuple[dict[str, str] | None, dict | None]:
    sec = decrypt_donetick()
    if not sec:
        return None, None
    try:
        login = urllib.request.Request(
            sec['instance'] + sec['jwt_endpoint'],
            data=json.dumps({
                'username': sec['service_account']['username'],
                'password': sec['service_account']['password'],
            }).encode(),
            headers={'Content-Type': 'application/json', 'Accept': 'application/json'},
            method='POST',
        )
        with urllib.request.urlopen(login, timeout=12) as r:
            token = json.loads(r.read())['access_token']
        return ({
            'Authorization': 'Bearer ' + token,
            'Accept': 'application/json',
            'Content-Type': 'application/json',
        }, sec)
    except Exception:
        return None, sec


def refresh_dashboard() -> bool:
    try:
        subprocess.run(['python3', str(GENERATOR)], cwd=str(ROOT), timeout=60, check=True)
        return True
    except Exception:
        return False


def parse_dt(value: str | None):
    if not value:
        return None
    try:
        return datetime.fromisoformat(value.replace('Z', '+00:00'))
    except Exception:
        return None


def due_state(due_raw: str | None) -> str:
    dt = parse_dt(due_raw)
    if not dt:
        return 'nodue'
    local = dt.astimezone(LOCAL_TZ)
    now = datetime.now(LOCAL_TZ)
    days = (local.date() - now.date()).days
    if days < 0:
        return 'overdue'
    if days == 0:
        return 'today'
    if days == 1:
        return 'tomorrow'
    return 'upcoming'


def fetch_donetick_focus_signature() -> tuple[str, int]:
    headers, sec = donetick_headers()
    if not headers or not sec:
        return 'unavailable', 0
    try:
        req = urllib.request.Request(f"{sec['instance'].rstrip('/')}/api/v1/chores", headers=headers)
        with urllib.request.urlopen(req, timeout=12) as r:
            chores = json.loads(r.read() or b'{}').get('res', [])
        urgent = []
        for chore in chores:
            if chore.get('status') not in (0, None):
                continue
            state = due_state(chore.get('nextDueDate'))
            if state not in {'overdue', 'today'}:
                continue
            urgent.append({
                'id': str(chore.get('id') or ''),
                'name': str(chore.get('name') or ''),
                'due': str(chore.get('nextDueDate') or ''),
                'state': state,
            })
        urgent.sort(key=lambda item: (item['due'] or '9999', item['name'].lower(), item['id']))
        payload = json.dumps(urgent, separators=(',', ':'), sort_keys=True)
        return hashlib.sha1(payload.encode('utf-8')).hexdigest()[:16], len(urgent)
    except Exception:
        return 'error', 0


class Handler(SimpleHTTPRequestHandler):
    def __init__(self, *args, directory=None, **kwargs):
        super().__init__(*args, directory=str(PUBLIC), **kwargs)

    def do_GET(self):
        parsed = urllib.parse.urlparse(self.path)
        if parsed.path == '/api/donetick-focus-state':
            return self._donetick_focus_state(parsed)
        self.path = parsed.path
        return super().do_GET()

    def do_POST(self):
        length = int(self.headers.get('Content-Length', '0') or '0')
        raw = self.rfile.read(length) if length else b'{}'
        try:
            payload = json.loads(raw.decode('utf-8') or '{}')
        except Exception:
            return self._json(HTTPStatus.BAD_REQUEST, {'ok': False, 'error': 'invalid_json'})

        if self.path == '/api/topic-feedback':
            return self._topic_feedback(payload)
        if self.path == '/api/topic-feedback/reset':
            return self._topic_reset()
        if self.path == '/api/paperless-action':
            return self._paperless_action(payload)
        if self.path == '/api/donetick-complete':
            return self._donetick_complete(payload)
        return self._json(HTTPStatus.NOT_FOUND, {'ok': False, 'error': 'not_found'})

    def _topic_feedback(self, payload: dict):
        term = str(payload.get('term', '')).strip()
        vote = str(payload.get('vote', '')).strip().lower()
        if not term or vote not in {'up', 'down'}:
            return self._json(HTTPStatus.BAD_REQUEST, {'ok': False, 'error': 'bad_payload'})
        items = load_json(DIGEST_FEEDBACK, [])
        items = [x for x in items if not (str(x.get('origin', '')) == 'dashboard' and str(x.get('term', '')).strip().lower() == term.lower())]
        items.append({
            'term': term,
            'vote': vote,
            'note': f"Dashboard {'hide' if vote == 'down' else 'prefer'} topic: {term}",
            'origin': 'dashboard',
            'source': str(payload.get('source', '')).strip(),
            'domain': str(payload.get('domain', '')).strip(),
        })
        save_json(DIGEST_FEEDBACK, items)
        return self._json(HTTPStatus.OK, {'ok': True, 'count': len(items)})

    def _topic_reset(self):
        items = load_json(DIGEST_FEEDBACK, [])
        items = [x for x in items if str(x.get('origin', '')) != 'dashboard']
        save_json(DIGEST_FEEDBACK, items)
        return self._json(HTTPStatus.OK, {'ok': True, 'count': len(items)})

    def _paperless_action(self, payload: dict):
        item_id = str(payload.get('id', '')).strip()
        action = str(payload.get('action', '')).strip().lower()
        if not item_id or action not in {'needs_attention', 'good_to_go'}:
            return self._json(HTTPStatus.BAD_REQUEST, {'ok': False, 'error': 'bad_payload'})
        state = load_json(PAPERLESS_STATE, {})
        current = state.get(item_id, {}) if isinstance(state, dict) else {}
        current_status = str(current.get('status') or '').lower()
        if action == 'needs_attention':
            new_status = 'active' if current_status == 'needs_attention' else 'needs_attention'
        else:
            new_status = 'good_to_go'
        state[item_id] = {'status': new_status}
        save_json(PAPERLESS_STATE, state)
        return self._json(HTTPStatus.OK, {'ok': True, 'id': item_id, 'status': new_status})

    def _donetick_complete(self, payload: dict):
        item_id = str(payload.get('id') or payload.get('choreId') or '').strip()
        if not item_id:
            return self._json(HTTPStatus.BAD_REQUEST, {'ok': False, 'error': 'bad_payload', 'detail': 'expected id or choreId'})
        headers, sec = donetick_headers()
        if not headers or not sec:
            return self._json(HTTPStatus.BAD_GATEWAY, {'ok': False, 'error': 'donetick_auth_failed'})
        try:
            req = urllib.request.Request(
                f"{sec['instance'].rstrip('/')}/api/v1/chores/{item_id}/do",
                data=b'{}',
                headers=headers,
                method='POST',
            )
            with urllib.request.urlopen(req, timeout=15) as r:
                response = json.loads(r.read() or b'{}') if (r.headers.get('Content-Type') or '').startswith('application/json') else {'status': r.status}
            refreshed = refresh_dashboard()
            return self._json(HTTPStatus.OK, {'ok': True, 'id': item_id, 'dashboard_refreshed': refreshed, 'response': response})
        except urllib.error.HTTPError as e:
            detail = e.read().decode('utf-8', 'ignore')[:500]
            return self._json(HTTPStatus.BAD_GATEWAY, {'ok': False, 'error': 'donetick_complete_failed', 'status': e.code, 'detail': detail})
        except Exception as e:
            return self._json(HTTPStatus.BAD_GATEWAY, {'ok': False, 'error': 'donetick_complete_failed', 'detail': str(e)})

    def _donetick_focus_state(self, parsed):
        current = urllib.parse.parse_qs(parsed.query).get('current', [''])[0]
        signature, urgent_count = fetch_donetick_focus_signature()
        changed = bool(current and signature not in {'error', 'unavailable'} and current != signature)
        refreshed = refresh_dashboard() if changed else False
        return self._json(HTTPStatus.OK, {
            'ok': True,
            'signature': signature,
            'urgent_count': urgent_count,
            'changed': changed,
            'dashboard_refreshed': refreshed,
        })

    def _json(self, status: HTTPStatus, payload: dict):
        body = json.dumps(payload).encode('utf-8')
        self.send_response(status)
        self.send_header('Content-Type', 'application/json; charset=utf-8')
        self.send_header('Content-Length', str(len(body)))
        self.end_headers()
        self.wfile.write(body)

    def log_message(self, fmt, *args):
        print('%s - - [%s] %s' % (self.address_string(), self.log_date_time_string(), fmt % args))


if __name__ == '__main__':
    handler = partial(Handler, directory=str(PUBLIC))
    ThreadingHTTPServer((HOST, PORT), handler).serve_forever()