# SPDX-License-Identifier: WTFPL

from .dbrecord import DbRecord

class Vessel(DbRecord):

    table = "vessel"
    pk_field = "vid"
    fields = ('vid', 'vtype', 'vesselname', 'model', 'shipyard', 'loa', 'lwl',
        'beam', 'draught', 'draught_min', 'displacement', 'ballast',
        'beltpos_aft', 'beltpos_bow', 'shapefile', 'sid_default', 'year_built',
        'remarks')

    def __init__(self, db, vid=None):
        super().__init__(db, vid)
        self.title = _("Vessel({})")

    def create(self):
        sql = (
            "SELECT MIN(v1.vid+1) AS newid "
            "FROM vessel AS v1 LEFT JOIN vessel AS v2 ON v2.vid=v1.vid+1 "
            "WHERE v1.vid>=0 AND v2.vid IS NULL"
            )
        self.dcur.execute(sql)
        row = self.dcur.fetchone()
        if row is None:
            # vessel table empty: create first vessel
            self.pk_value = 1
        else:
            # create additional vessel
            self.pk_value = row['newid']
        self.clear()
        self.vid = self.pk_value
        self.vesselname = f"Vessel #{self.pk_value}"
        self.vtype = 1 # monohull
        self._insert()
        self.conn.commit()

    def save(self, commit=True):
        super().save()
        if commit:
            self.conn.commit()

    def delete(self):
        # there must be no assiciated data!
        pass