import json

from httpx import AsyncClient

from settings import API_BASE

headers = {"Content-Type": "application/json"}


async def get_author(author_id):
    gql = {
        "query": "query GetAuthor { getAuthor(author_id: Int!) { id slug userpic name lastSeen } }",
        "operation": "GetAuthor",
        "variables": {"author_id": author_id}
    }
    try:
        async with AsyncClient() as client:
            response = await client.post(API_BASE, headers=headers, data=gql)
            if response.status_code != 200:
                return None
            r = response.json()
            print(f"[services.core] got author: {r}")
            author = r.get("data", {}).get("getAuthor")
            return author
    except Exception:
        return None


async def get_network(author_id, limit=50, offset=0) -> list:
    gql = {
        "query": "query LoadAuthors { authorFollowings(author_id: Int!, limit: Int, offset: Int) { id slug userpic name } }",
        "operation": "LoadAuthors",
        "variables": {
            "author_id": author_id,
            "limit": limit,
            "offset": offset
        }
    }

    followings = []
    followers = []
    try:
        async with AsyncClient() as client:
            response = await client.post(API_BASE, headers=headers, data=json.dumps(gql))
            if response.status_code != 200:
                return []
            r = response.json()
            followings = r.get("data", {}).get("authorFollowings", [])
            more_amount = limit - len(followings)
            if more_amount > 0:
                followers = get_followers(author_id, more_amount)
    except Exception as e:
        print(e)

    followings.extend(followers)

    return followings


async def get_followers(author_id, amount):
    gql = {
        "query": "query LoadAuthors { authorFollowers(author_id: Int!, limit: Int) { id slug userpic name } }",
        "operation": "LoadAuthors",
        "variables": {
            "author_id": author_id,
            "limit": amount
        }
    }
    followers = []
    try:
        async with AsyncClient() as client:
            response = await client.post(API_BASE, headers=headers, data=json.dumps(gql))
            if response.status_code != 200:
                return []
            r = response.json()
            followers = r.get("data", {}).get("authorFollowers", [])
    except Exception as e:
        followers = []
    return followers