# mautrix-signal - A Matrix-Signal puppeting bridge
# Copyright (C) 2021 Tulir Asokan
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.
from asyncpg import Connection

from mautrix.util.async_db import UpgradeTable

upgrade_table = UpgradeTable()


@upgrade_table.register(description="Initial revision")
async def upgrade_v1(conn: Connection) -> None:
    await conn.execute(
        """
        CREATE TABLE portal (
            chat_id     TEXT,
            receiver    TEXT,
            mxid        TEXT,
            name        TEXT,
            encrypted   BOOLEAN NOT NULL DEFAULT false,

            PRIMARY KEY (chat_id, receiver)
        )
        """
    )
    await conn.execute(
        """
        CREATE TABLE "user" (
            mxid        TEXT PRIMARY KEY,
            username    TEXT,
            uuid        UUID,
            notice_room TEXT
        )
        """
    )
    await conn.execute(
        """
        CREATE TABLE puppet (
            uuid      UUID UNIQUE,
            number    TEXT UNIQUE,
            name      TEXT,

            uuid_registered   BOOLEAN NOT NULL DEFAULT false,
            number_registered BOOLEAN NOT NULL DEFAULT false,

            custom_mxid  TEXT,
            access_token TEXT,
            next_batch   TEXT
        )
        """
    )
    await conn.execute(
        """
        CREATE TABLE user_portal (
            "user"          TEXT,
            portal          TEXT,
            portal_receiver TEXT,
            in_community    BOOLEAN NOT NULL DEFAULT false,

            FOREIGN KEY (portal, portal_receiver) REFERENCES portal(chat_id, receiver)
                ON UPDATE CASCADE ON DELETE CASCADE
        )
        """
    )
    await conn.execute(
        """
        CREATE TABLE message (
            mxid    TEXT NOT NULL,
            mx_room TEXT NOT NULL,
            sender          UUID,
            timestamp       BIGINT,
            signal_chat_id  TEXT,
            signal_receiver TEXT,

            PRIMARY KEY (sender, timestamp, signal_chat_id, signal_receiver),
            FOREIGN KEY (signal_chat_id, signal_receiver) REFERENCES portal(chat_id, receiver)
                ON UPDATE CASCADE ON DELETE CASCADE,
            UNIQUE (mxid, mx_room)
        )
        """
    )
    await conn.execute(
        """
        CREATE TABLE reaction (
            mxid    TEXT NOT NULL,
            mx_room TEXT NOT NULL,

            signal_chat_id  TEXT   NOT NULL,
            signal_receiver TEXT   NOT NULL,
            msg_author      UUID   NOT NULL,
            msg_timestamp   BIGINT NOT NULL,
            author          UUID   NOT NULL,

            emoji TEXT NOT NULL,

            PRIMARY KEY (signal_chat_id, signal_receiver, msg_author, msg_timestamp, author),
            FOREIGN KEY (msg_author, msg_timestamp, signal_chat_id, signal_receiver)
                REFERENCES message(sender, timestamp, signal_chat_id, signal_receiver)
                ON DELETE CASCADE ON UPDATE CASCADE,
            UNIQUE (mxid, mx_room)
        )
        """
    )


@upgrade_table.register(description="Add avatar info to portal table")
async def upgrade_v2(conn: Connection) -> None:
    await conn.execute("ALTER TABLE portal ADD COLUMN avatar_hash TEXT")
    await conn.execute("ALTER TABLE portal ADD COLUMN avatar_url TEXT")


@upgrade_table.register(description="Add double-puppeting base_url to puppe table")
async def upgrade_v3(conn: Connection) -> None:
    await conn.execute("ALTER TABLE puppet ADD COLUMN base_url TEXT")


@upgrade_table.register(description="Allow phone numbers as message sender identifiers")
async def upgrade_v4(conn: Connection, scheme: str) -> None:
    if scheme == "sqlite":
        # SQLite doesn't have anything in the tables yet,
        # so just recreate them without migrating data
        await conn.execute("DROP TABLE message")
        await conn.execute("DROP TABLE reaction")
        await conn.execute(
            """
            CREATE TABLE message (
                mxid    TEXT NOT NULL,
                mx_room TEXT NOT NULL,
                sender          TEXT,
                timestamp       BIGINT,
                signal_chat_id  TEXT,
                signal_receiver TEXT,

                PRIMARY KEY (sender, timestamp, signal_chat_id, signal_receiver),
                FOREIGN KEY (signal_chat_id, signal_receiver) REFERENCES portal(chat_id, receiver)
                    ON UPDATE CASCADE ON DELETE CASCADE,
                UNIQUE (mxid, mx_room)
            )
            """
        )
        await conn.execute(
            """
            CREATE TABLE reaction (
                mxid    TEXT NOT NULL,
                mx_room TEXT NOT NULL,

                signal_chat_id  TEXT   NOT NULL,
                signal_receiver TEXT   NOT NULL,
                msg_author      TEXT   NOT NULL,
                msg_timestamp   BIGINT NOT NULL,
                author          TEXT   NOT NULL,

                emoji TEXT NOT NULL,

                PRIMARY KEY (signal_chat_id, signal_receiver, msg_author, msg_timestamp, author),
                FOREIGN KEY (msg_author, msg_timestamp, signal_chat_id, signal_receiver)
                    REFERENCES message(sender, timestamp, signal_chat_id, signal_receiver)
                    ON DELETE CASCADE ON UPDATE CASCADE,
                UNIQUE (mxid, mx_room)
            )
            """
        )
        return

    cname = await conn.fetchval(
        "SELECT constraint_name FROM information_schema.table_constraints "
        "WHERE table_name='reaction' AND constraint_name LIKE '%_fkey'"
    )
    await conn.execute(f"ALTER TABLE reaction DROP CONSTRAINT {cname}")
    await conn.execute("ALTER TABLE reaction ALTER COLUMN msg_author SET DATA TYPE TEXT")
    await conn.execute("ALTER TABLE reaction ALTER COLUMN author SET DATA TYPE TEXT")
    await conn.execute("ALTER TABLE message ALTER COLUMN sender SET DATA TYPE TEXT")
    await conn.execute(
        f"ALTER TABLE reaction ADD CONSTRAINT {cname} "
        "FOREIGN KEY (msg_author, msg_timestamp, signal_chat_id, signal_receiver) "
        "  REFERENCES message(sender, timestamp, signal_chat_id, signal_receiver) "
        "  ON DELETE CASCADE ON UPDATE CASCADE"
    )


@upgrade_table.register(description="Add avatar info to puppet table")
async def upgrade_v5(conn: Connection) -> None:
    await conn.execute("ALTER TABLE puppet ADD COLUMN avatar_hash TEXT")
    await conn.execute("ALTER TABLE puppet ADD COLUMN avatar_url TEXT")
    await conn.execute("ALTER TABLE puppet ADD COLUMN name_set BOOLEAN NOT NULL DEFAULT false")
    await conn.execute("ALTER TABLE puppet ADD COLUMN avatar_set BOOLEAN NOT NULL DEFAULT false")
    await conn.execute("UPDATE puppet SET name_set=true WHERE name<>''")


@upgrade_table.register(description="Add revision to portal table")
async def upgrade_v6(conn: Connection) -> None:
    await conn.execute("ALTER TABLE portal ADD COLUMN name_set BOOLEAN NOT NULL DEFAULT false")
    await conn.execute("ALTER TABLE portal ADD COLUMN avatar_set BOOLEAN NOT NULL DEFAULT false")
    await conn.execute("ALTER TABLE portal ADD COLUMN revision INTEGER NOT NULL DEFAULT 0")
    await conn.execute("UPDATE portal SET name_set=true WHERE name<>''")
    await conn.execute("UPDATE portal SET avatar_set=true WHERE avatar_hash<>''")


@upgrade_table.register(description="Add relay user field to portal table")
async def upgrade_v7(conn: Connection) -> None:
    await conn.execute("ALTER TABLE portal ADD COLUMN relay_user_id TEXT")


@upgrade_table.register(description="Add support for disappearing messages")
async def upgrade_v8(conn: Connection) -> None:
    await conn.execute(
        """
        CREATE TABLE disappearing_message (
            room_id             TEXT,
            mxid                TEXT,
            expiration_seconds  BIGINT,
            expiration_ts       BIGINT,

            PRIMARY KEY (room_id, mxid)
        )
        """
    )
    await conn.execute("ALTER TABLE portal ADD COLUMN expiration_time BIGINT")