from __future__ import annotations

from datetime import datetime
from typing import Any, Optional, List, Dict, TYPE_CHECKING

from constants import GQL_OPERATIONS

if TYPE_CHECKING:
    from twitch import Twitch


async def claim_drop(twitch: Twitch, claim_id: str) -> bool:
    op = GQL_OPERATIONS["ClaimDrop"].with_variables(
        {"input": {"dropInstanceID": claim_id}}
    )
    response = await twitch.gql_request(op)
    data = response["data"]
    if "errors" in data and data["errors"]:
        return False
    elif "claimDropRewards" in data:
        if not data["claimDropRewards"]:
            return False
        elif (
            data["claimDropRewards"]["status"]
            in ["ELIGIBLE_FOR_ALL", "DROP_INSTANCE_ALREADY_CLAIMED"]
        ):
            return True
    return False


class Game:
    def __init__(self, data: Dict[str, Any]):
        self.id: int = int(data["id"])
        self.name: str = data["name"]

    def __eq__(self, other: object):
        if isinstance(other, self.__class__):
            return self.id == other.id
        return NotImplemented

    def __hash__(self) -> int:
        return self.id


class BaseDrop:
    def __init__(self, campaign: DropsCampaign, data: Dict[str, Any]):
        self._twitch: Twitch = campaign._twitch
        self.id = data["id"]
        self.name: str = data["name"]
        self.campaign: DropsCampaign = campaign
        self.rewards: List[str] = [b["benefit"]["name"] for b in data["benefitEdges"]]
        self.starts_at: datetime = datetime.strptime(data["startAt"], "%Y-%m-%dT%H:%M:%SZ")
        self.ends_at: datetime = datetime.strptime(data["endAt"], "%Y-%m-%dT%H:%M:%SZ")
        # If claim_id is not None, we can use it to claim the drop
        self.claim_id: Optional[str] = data["self"]["dropInstanceID"]
        self.is_claimed: bool = data["self"]["isClaimed"]
        self._preconditions: bool = data["self"]["hasPreconditionsMet"]

    @property
    def can_earn(self) -> bool:
        return (
            self._preconditions  # preconditions are met
            and self.campaign.active  # campaign is active
            and not self.is_claimed  # drop isn't already claimed
        )

    @property
    def can_claim(self) -> bool:
        return self.claim_id is not None and not self.is_claimed

    async def claim(self) -> bool:
        """
        Returns True if the claim succeeded, False otherwise.
        """
        if not self.can_claim:
            return False
        assert self.claim_id is not None
        self.is_claimed = await claim_drop(self._twitch, self.claim_id)
        return self.is_claimed


class TimedDrop(BaseDrop):
    def __init__(self, campaign: DropsCampaign, data: Dict[str, Any]):
        super().__init__(campaign, data)
        self.current_minutes: int = data["self"]["currentMinutesWatched"]
        self.required_minutes: int = data["requiredMinutesWatched"]
        if self.is_claimed:
            # correct minutes for claimed drops
            self.current_minutes = self.required_minutes

    @property
    def remaining_minutes(self):
        return self.required_minutes - self.current_minutes

    @property
    def progress(self):
        return self.current_minutes / self.required_minutes

    def update(self, message: Dict[str, Any]):
        # {"type": "drop-progress", data: {"current_progress_min": 3, "required_progress_min": 10}}
        # {"type": "drop-claim", data: {"drop_instance_id": ...}}
        msg_type = message["type"]
        if msg_type == "drop-progress":
            self.current_minutes = message["data"]["current_progress_min"]
            self.required_minutes = message["data"]["required_progress_min"]
        elif msg_type == "drop-claim":
            self.claim_id = message["data"]["drop_instance_id"]


class DropsCampaign:
    def __init__(self, twitch: Twitch, data: Dict[str, Any]):
        self._twitch: Twitch = twitch
        self.id: str = data["id"]
        self.name: str = data["name"]
        self.game: Game = Game(data["game"])
        self.starts_at: datetime = datetime.strptime(data["startAt"], "%Y-%m-%dT%H:%M:%SZ")
        self.ends_at: datetime = datetime.strptime(data["endAt"], "%Y-%m-%dT%H:%M:%SZ")
        self.status: str = data["status"]
        self.timed_drops: Dict[str, TimedDrop] = {
            d["id"]: TimedDrop(self, d) for d in data["timeBasedDrops"]
        }

    @property
    def active(self):
        return self.status == "ACTIVE"

    def get_drop(self, drop_id: str) -> Optional[TimedDrop]:
        return self.timed_drops.get(drop_id)