from typing import Optional, List
from sqlalchemy import Table, Column, UniqueConstraint, and_, case
from sqlalchemy.types import Integer, TIMESTAMP
from sqlalchemy.schema import ForeignKey
from sqlalchemy.sql import func, select, delete
from sqlalchemy.engine import Row
from sqlalchemy.dialects.mysql import insert

from core.data.schema import BaseData, metadata

item = Table(
    "wacca_item",
    metadata,
    Column("id", Integer, primary_key=True, nullable=False),
    Column(
        "user",
        ForeignKey("aime_user.id", ondelete="cascade", onupdate="cascade"),
        nullable=False,
    ),
    Column("item_id", Integer, nullable=False),
    Column("type", Integer, nullable=False),
    Column("acquire_date", TIMESTAMP, nullable=False, server_default=func.now()),
    Column("use_count", Integer, server_default="0"),
    UniqueConstraint("user", "item_id", "type", name="wacca_item_uk"),
    mysql_charset="utf8mb4",
)

ticket = Table(
    "wacca_ticket",
    metadata,
    Column("id", Integer, primary_key=True, nullable=False),
    Column(
        "user",
        ForeignKey("aime_user.id", ondelete="cascade", onupdate="cascade"),
        nullable=False,
    ),
    Column("ticket_id", Integer, nullable=False),
    Column("acquire_date", TIMESTAMP, nullable=False, server_default=func.now()),
    Column("expire_date", TIMESTAMP),
    mysql_charset="utf8mb4",
)

song_unlock = Table(
    "wacca_song_unlock",
    metadata,
    Column("id", Integer, primary_key=True, nullable=False),
    Column(
        "user",
        ForeignKey("aime_user.id", ondelete="cascade", onupdate="cascade"),
        nullable=False,
    ),
    Column("song_id", Integer, nullable=False),
    Column("highest_difficulty", Integer, nullable=False),
    Column("acquire_date", TIMESTAMP, nullable=False, server_default=func.now()),
    UniqueConstraint("user", "song_id", name="wacca_song_unlock_uk"),
    mysql_charset="utf8mb4",
)

trophy = Table(
    "wacca_trophy",
    metadata,
    Column("id", Integer, primary_key=True, nullable=False),
    Column(
        "user",
        ForeignKey("aime_user.id", ondelete="cascade", onupdate="cascade"),
        nullable=False,
    ),
    Column("trophy_id", Integer, nullable=False),
    Column("season", Integer, nullable=False),
    Column("progress", Integer, nullable=False, server_default="0"),
    Column("badge_type", Integer, nullable=False, server_default="0"),
    UniqueConstraint("user", "trophy_id", "season", name="wacca_trophy_uk"),
    mysql_charset="utf8mb4",
)


class WaccaItemData(BaseData):
    async def get_song_unlocks(self, user_id: int) -> Optional[List[Row]]:
        sql = song_unlock.select(song_unlock.c.user == user_id)

        result = await self.execute(sql)
        if result is None:
            return None

        return result.fetchall()

    async def unlock_song(self, user_id: int, song_id: int, difficulty: int) -> Optional[int]:
        sql = insert(song_unlock).values(
            user=user_id, song_id=song_id, highest_difficulty=difficulty
        )

        conflict = sql.on_duplicate_key_update(
            highest_difficulty=case(
                (
                    song_unlock.c.highest_difficulty >= difficulty,
                    song_unlock.c.highest_difficulty,
                ),
                (song_unlock.c.highest_difficulty < difficulty, difficulty),
            )
        )

        result = await self.execute(conflict)
        if result is None:
            self.logger.error(
                f"{__name__} failed to unlock song! user: {user_id}, song_id: {song_id}, difficulty: {difficulty}"
            )
            return None

        return result.lastrowid

    async def put_item(self, user_id: int, item_type: int, item_id: int) -> Optional[int]:
        sql = insert(item).values(
            user=user_id,
            item_id=item_id,
            type=item_type,
        )

        conflict = sql.on_duplicate_key_update(use_count=item.c.use_count + 1)

        result = await self.execute(conflict)
        if result is None:
            self.logger.error(
                f"{__name__} failed to insert item! user: {user_id}, item_id: {item_id}, item_type: {item_type}"
            )
            return None

        return result.lastrowid

    async def get_items(
        self, user_id: int, item_type: int = None, item_id: int = None
    ) -> Optional[List[Row]]:
        """
        A catch-all item lookup given a profile and option item type and ID specifiers
        """
        sql = item.select(
            and_(
                item.c.user == user_id,
                item.c.type == item_type if item_type is not None else True,
                item.c.item_id == item_id if item_id is not None else True,
            )
        )

        result = await self.execute(sql)
        if result is None:
            return None
        return result.fetchall()

    async def get_tickets(self, user_id: int) -> Optional[List[Row]]:
        sql = select(ticket).where(ticket.c.user == user_id)

        result = await self.execute(sql)
        if result is None:
            return None
        return result.fetchall()

    async def add_ticket(self, user_id: int, ticket_id: int) -> None:
        sql = insert(ticket).values(user=user_id, ticket_id=ticket_id)

        result = await self.execute(sql)
        if result is None:
            self.logger.error(
                f"add_ticket: Failed to insert wacca ticket! user_id: {user_id} ticket_id {ticket_id}"
            )
            return None
        return result.lastrowid

    async def spend_ticket(self, id: int) -> None:
        sql = delete(ticket).where(ticket.c.id == id)

        result = await self.execute(sql)
        if result is None:
            self.logger.warning(f"Failed to delete ticket id {id}")
            return None

    async def get_trophies(self, user_id: int, season: int = None) -> Optional[List[Row]]:
        if season is None:
            sql = select(trophy).where(trophy.c.user == user_id)
        else:
            sql = select(trophy).where(
                and_(trophy.c.user == user_id, trophy.c.season == season)
            )

        result = await self.execute(sql)
        if result is None:
            return None
        return result.fetchall()

    async def update_trophy(
        self, user_id: int, trophy_id: int, season: int, progress: int, badge_type: int
    ) -> Optional[int]:
        sql = insert(trophy).values(
            user=user_id,
            trophy_id=trophy_id,
            season=season,
            progress=progress,
            badge_type=badge_type,
        )

        conflict = sql.on_duplicate_key_update(progress=progress)

        result = await self.execute(conflict)
        if result is None:
            self.logger.error(
                f"update_trophy: Failed to insert wacca trophy! user_id: {user_id} trophy_id: {trophy_id} progress {progress}"
            )
            return None
        return result.lastrowid