"""Asset operations shared by web forms and the REST API."""
from fastapi import HTTPException
from database import connect, ensure_asset, validate_asset
from models import name_key


def list_assets(active=None):
    with connect() as db:
        if active is None:
            rows = db.execute('SELECT * FROM assets ORDER BY name COLLATE NOCASE').fetchall()
        else:
            rows = db.execute('SELECT * FROM assets WHERE active=? ORDER BY name COLLATE NOCASE', (active,)).fetchall()
    return [dict(row) for row in rows]


def _get_asset(db, asset_id):
    if not 1 <= asset_id <= 9223372036854775807:
        raise HTTPException(404, 'Position nicht gefunden.')
    row = db.execute('SELECT * FROM assets WHERE id=?', (asset_id,)).fetchone()
    if row is None:
        raise HTTPException(404, 'Position nicht gefunden.')
    return dict(row)


def get_asset(asset_id):
    with connect() as db:
        return _get_asset(db, asset_id)


def create_asset(name, asset_type='other', ticker=None, active=True, reuse=False):
    name, ticker = validate_asset(name, asset_type, ticker)
    with connect() as db:
        db.execute('BEGIN IMMEDIATE')
        existing = db.execute('SELECT * FROM assets WHERE normalized_name=?', (name_key(name),)).fetchone()
        if existing:
            if reuse:
                return dict(existing)
            raise HTTPException(409, 'Diese Position existiert bereits.')
        asset_id = ensure_asset(db, name, asset_type, ticker)
        db.execute('UPDATE assets SET active=? WHERE id=?', (bool(active), asset_id))
        return _get_asset(db, asset_id)


def update_asset(asset_id, changes):
    with connect() as db:
        db.execute('BEGIN IMMEDIATE')
        data = _get_asset(db, asset_id)
        data.update(changes)
        name, ticker = validate_asset(data['name'], data['asset_type'], data['ticker'])
        if db.execute('SELECT 1 FROM assets WHERE normalized_name=? AND id<>?', (name_key(name), asset_id)).fetchone():
            raise HTTPException(409, 'Diese Position existiert bereits.')
        db.execute('UPDATE assets SET name=?, normalized_name=?, ticker=?, asset_type=?, active=? WHERE id=?',
                   (name, name_key(name), ticker, data['asset_type'], bool(data['active']), asset_id))
        return _get_asset(db, asset_id)


def deactivate_asset(asset_id):
    # Preserve references and history even when an asset has no payments yet.
    return update_asset(asset_id, {'active': False})