TJWaterServerBinary/app/native/wndb/model/mixing.py

from typing import Any

from ..core.database import (
    ChangeSet,
    DatabaseCommand,
    execute_command,
    g_add_prefix,
    g_delete_prefix,
    g_update_prefix,
    read_all,
    sql_literal,
    try_read,
)

MIXING_MODEL_MIXED = 'MIXED'
MIXING_MODEL_2COMP = '2COMP'
MIXING_MODEL_FIFO = 'FIFO'
MIXING_MODEL_LIFO = 'LIFO'

def get_mixing_schema(name: str) -> dict[str, dict[str, Any]]:
    return { 'tank'  : {'type': 'str'   , 'optional': False , 'readonly': True },
             'model' : {'type': 'str'   , 'optional': False , 'readonly': False},
             'value' : {'type': 'float' , 'optional': True ,  'readonly': False} }


def get_mixing(name: str, tank: str) -> dict[str, Any]:
    m = try_read(name, "select tank_id as tank, model, value from network.tank_mixing where tank_id = %s", (tank,))
    if m == None:
        return {}
    d = {}
    d['tank'] = str(m['tank'])
    d['model'] = str(m['model'])
    d['value'] = float(m['value']) if m['value'] != None else None
    return d


class Mixing(object):
    def __init__(self, input: dict[str, Any]) -> None:
        self.type = 'mixing'
        self.tank = str(input['tank'])
        self.model = str(input['model'])
        self.value = float(input['value']) if 'value' in input and input['value'] != None else None

        self.f_type = sql_literal(self.type)
        self.f_tank = sql_literal(self.tank)
        self.f_model = sql_literal(self.model)
        self.f_value = sql_literal(self.value)

    def as_dict(self) -> dict[str, Any]:
        return { 'type': self.type, 'tank': self.tank, 'model': self.model, 'value': self.value }

def _set_mixing(name: str, cs: ChangeSet) -> DatabaseCommand:
    raw_new = get_mixing(name, cs.operations[0]['tank'])

    new_dict = cs.operations[0]
    schema = get_mixing_schema(name)
    for key, value in schema.items():
        if key in new_dict and not value['readonly']:
            raw_new[key] = new_dict[key]
    new = Mixing(raw_new)

    statement = f"update network.tank_mixing set model = {new.f_model}, value = {new.f_value} where tank_id = {new.f_tank};"

    change = g_update_prefix | new.as_dict()

    return DatabaseCommand(statement, [change])


def set_mixing(name: str, cs: ChangeSet) -> ChangeSet:
    if 'tank' not in cs.operations[0]:
        return ChangeSet()
    if get_mixing(name, cs.operations[0]['tank']) == {}:
        return ChangeSet()
    return execute_command(name, _set_mixing(name, cs))


def _add_mixing(name: str, cs: ChangeSet) -> DatabaseCommand:
    new = Mixing(cs.operations[0])

    statement = f"insert into network.tank_mixing (tank_id, model, value) values ({new.f_tank}, {new.f_model}, {new.f_value});"

    change = g_add_prefix | new.as_dict()

    return DatabaseCommand(statement, [change])


def add_mixing(name: str, cs: ChangeSet) -> ChangeSet:
    if 'tank' not in cs.operations[0]:
        return ChangeSet()
    if get_mixing(name, cs.operations[0]['tank']) != {}:
        return ChangeSet()
    return execute_command(name, _add_mixing(name, cs))


def _delete_mixing(name: str, cs: ChangeSet) -> DatabaseCommand:
    tank = str(cs.operations[0]['tank'])
    f_tank = sql_literal(tank)

    statement = f"delete from network.tank_mixing where tank_id = {f_tank};"

    change = g_delete_prefix | {'type': 'mixing', 'tank': tank}

    return DatabaseCommand(statement, [change])


def delete_mixing(name: str, cs: ChangeSet) -> ChangeSet:
    if 'tank' not in cs.operations[0]:
        return ChangeSet()
    if get_mixing(name, cs.operations[0]['tank']) == {}:
        return ChangeSet()
    return execute_command(name, _delete_mixing(name, cs))


#--------------------------------------------------------------
# [EPA2][EPA3][IN][OUT]
#   TankID  MixModel  FractVolume
#   FractVolume if type == MIX2
#--------------------------------------------------------------


def inp_in_mixing(line: str) -> str:
    tokens = line.split()

    num = len(tokens)
    has_desc = tokens[-1].startswith(';')
    num_without_desc = (num - 1) if has_desc else num

    tank = str(tokens[0])
    model = str(tokens[1].upper())
    value = float(tokens[3]) if num_without_desc >= 4 else None
    return str(f"insert into network.tank_mixing (tank_id, model, value) values ({sql_literal(tank)}, {sql_literal(model)}, {sql_literal(value)});")


def inp_out_mixing(name: str) -> list[str]:
    lines = []
    objs = read_all(name, 'select tank_id as tank, model, value from network.tank_mixing order by tank_id')
    for obj in objs:
        tank = obj['tank']
        model = obj['model']
        value = obj['value'] if obj['value'] != None else ''
        lines.append(f'{tank} {model} {value}')
    return lines


def delete_mixing_by_tank(name: str, tank: str) -> ChangeSet:
    row = try_read(name, "select 1 from network.tank_mixing where tank_id = %s", (tank,))
    if row == None:
        return ChangeSet()
    return ChangeSet(g_delete_prefix | {'type' : 'mixing', 'tank': tank})