"""This module contains code to make the access of MediaWiki tables
easy. The module uses sqlalchemy to access the database.
"""
from sqlalchemy import Table, Column, types, MetaData


def page_table(metadata: MetaData) -> Table:
    """Returns the sqlalchemy Table representing the "page" table in MediaWiki.
    :param metadata: metadata = sqlalchemy.MetaData()
    """
    return Table(
        "page", metadata,
        Column("page_id", types.Integer, primary_key=True),
        Column("page_namespace", types.Integer, nullable=False),
        Column("page_title", types.String(255, convert_unicode='force'), nullable=False),
        Column("page_restrictions", types.String, nullable=False),  # tinyblob NOT NULL
        Column("page_is_redirect", types.Integer, nullable=False),
        Column("page_is_new", types.Integer, nullable=False),
        Column("page_random", types.Float, nullable=False),
        Column("page_touched", types.String(14, convert_unicode='force'), nullable=False),
        Column("page_latest", types.Integer, nullable=False),
        Column("page_len", types.Integer, nullable=False),
        Column("page_content_model", types.String(32, convert_unicode='force')),
        Column("page_links_updated", types.String(14, convert_unicode='force')),
        Column("page_lang", types.String(35, convert_unicode='force')),
    )


def revision_table(metadata: MetaData) -> Table:
    """Returns the sqlalchemy Table representing the "revision" table in MediaWiki.
    :param metadata: metadata = sqlalchemy.MetaData()
    """
    return Table(
        "revision", metadata,
        Column("rev_id", types.Integer, nullable=False, primary_key=True),
        Column("rev_page", types.Integer, nullable=False, primary_key=True),
        Column("rev_comment_id", types.Integer, nullable=False),
        Column("rev_actor", types.Integer, nullable=False),
        Column("rev_timestamp", types.String(14, convert_unicode='force'), nullable=False),
        Column("rev_minor_edit", types.Integer, nullable=False),
        Column("rev_deleted", types.Integer, nullable=False),
        Column("rev_len", types.Integer, nullable=True),
        Column("rev_parent_id", types.Integer, nullable=True),
        Column("rev_sha1", types.String(32), nullable=False),
    )


def slots_table(metadata: MetaData) -> Table:
    """Returns the sqlalchemy Table representing the "slots" table in MediaWiki.
    :param metadata: metadata = sqlalchemy.MetaData()
    """
    return Table(
        "slots", metadata,
        Column("slot_revision_id", types.Integer, nullable=False, primary_key=True),
        Column("slot_role_id", types.Integer, nullable=False, primary_key=True),
        Column("slot_content_id", types.Integer, nullable=False),
        Column("slot_origin", types.Integer, nullable=False),
    )


def content_table(metadata: MetaData) -> Table:
    """Returns the sqlalchemy Table representing the "content" table in MediaWiki.
    :param metadata: metadata = sqlalchemy.MetaData()
    """
    return Table(
        "content", metadata,
        Column("content_id", types.Integer, nullable=False, primary_key=True),
        Column("content_size", types.Integer, nullable=False),
        Column("content_sha1", types.String(32, convert_unicode='force'), nullable=False),
        Column("content_model", types.Integer, nullable=False),
        Column("content_address", types.String(255, convert_unicode='force'), nullable=False),
    )


def text_table(metadata: MetaData) -> Table:
    """Returns the sqlalchemy Table representing the "text" table in MediaWiki.
    :param metadata: metadata = sqlalchemy.MetaData()
    """
    return Table(
        "text", metadata,
        Column("old_id", types.Integer, primary_key=True),
        Column("old_text", types.String(convert_unicode='force')),
        Column("old_flags", types.String(convert_unicode='force')),
    )


def user_table(metadata: MetaData) -> Table:
    """Returns the sqlalchemy Table representing the "user" table in MediaWiki.
    :param metadata: metadata = sqlalchemy.MetaData()
    """
    return Table(
        'user', metadata,
        Column("user_id", types.Integer, primary_key=True),
        Column("user_name", types.String(255, convert_unicode='force'), nullable=False),
        Column("user_real_name", types.String(255, convert_unicode='force'), nullable=False),
        Column("user_password", types.UnicodeText, nullable=False),
        # "user_newpassword"
        # "user_newpass_time"
        Column("user_email", types.String(convert_unicode='force'), nullable=False),
        # "user_touched"
        # "user_token"
        # "user_email_authenticated"
        # "user_email_token"
        # "user_email_token_expires"
        # "user_registration"
        # "user_editcount"
    )


def user_groups_table(metadata: MetaData) -> Table:
    """
    Returns the sqlalchemy Table representing the "user_groups" table in MediaWiki.

    :param metadata: metadata = sqlalchemy.MetaData()
    """
    return Table(
        'user_groups', metadata,
        Column('ug_user', types.Integer, nullable=False, primary_key=True),
        Column('ug_group', types.String(255, convert_unicode='force'), nullable=False, primary_key=True),
        Column("ug_expiry", types.String(14, convert_unicode='force')),
    )


def categorylinks_table(metadata: MetaData) -> Table:
    """Returns the sqlalchemy Table representing the "categorylinks" table in MediaWiki.
    :param metadata: metadata = sqlalchemy.MetaData()
    """
    return Table(
        "categorylinks", metadata,
        Column("cl_from", types.Integer, nullable=False, primary_key=True),
        Column("cl_to", types.String(255, convert_unicode='force'), nullable=False, primary_key=True),
        Column("cl_sortkey", types.String(230, convert_unicode='force'), nullable=False),
        Column("cl_timestamp", types.DateTime, nullable=False),
    )