import json
import logging
import subprocess

import requests

from django.conf import settings

logger = logging.getLogger(__name__)
rpc_id = 1


def api(method, params):
    global rpc_id
    rpc_id += 1
    url = "http://127.0.0.1:8080/api/v1/rpc"
    msg = {
        "jsonrpc": "2.0",
        "id": str(rpc_id),
        "method": method,
    }
    if params:
        msg["params"] = params
    if settings.DEBUG:
        print("POST signal rpc:", msg)
    response = requests.post(url, json=msg).json()
    if "result" in response:
        return response["result"]
    else:
        raise Exception("Error: %s", response)


def send(msg, to=None, group=None, preview_url=None, preview_title=None, preview_description=None, preview_image=None):
    params = {
        "message": msg
    }
    if group:
        params["groupId"] = group
        verifyGroupMembers(group)
    else:
        params["recipient"] = to
    if preview_url:
        params['previewUrl'] = preview_url
    if preview_title:
        params['previewTitle'] = preview_title
    if preview_description:
        params['previewDescription'] = preview_description
    if preview_image:
        params['previewImage'] = preview_image
    return api("send", params)


def send_reaction(target_address, target_ts, emoji, to=None, group=None, remove=False):
    params = {
        "emoji": emoji,
        "targetTimestamp": target_ts,
        "targetAuthor": target_address,
    }
    if group:
        params["groupId"] = group
    else:
        params["recipient"] = to

    return api("sendReaction", params)


def verifyGroupMembers(group_id):
    for group in api("listGroups", {}):
        if group["id"] == group_id:
            for member in group["members"]:
                if member["number"] != settings.SIGNAL_ACCOUNT:
                    for detail in api("listIdentities", {
                        "number": member["number"]
                    }):
                        if detail['trustLevel'] != 'TRUSTED_VERIFIED':
                            logger.error("%s verification numbers changed (accepting new numbers)", member["number"])
                            r = api("trust", {
                                "recipient": member["number"],
                                "verifiedSafetyNumber": detail['fingerprint'],
                            })