from .operation import *

OPTION_UNITS_CFS = 'CFS'
OPTION_UNITS_GPM = 'GPM'
OPTION_UNITS_MGD = 'MGD'
OPTION_UNITS_IMGD = 'IMGD'
OPTION_UNITS_AFD = 'AFD'
OPTION_UNITS_LPS = 'LPS'
OPTION_UNITS_LPM = 'LPM'
OPTION_UNITS_MLD = 'MLD'
OPTION_UNITS_CMH = 'CMH'
OPTION_UNITS_CMD = 'CMD'

OPTION_HEADLOSS_HW = 'H-W'
OPTION_HEADLOSS_DW = 'D-W'
OPTION_HEADLOSS_CM = 'C-M'

#OPTION_HYDRAULICS_USE = 'USE'
#OPTION_HYDRAULICS_SAVE = 'SAVE'

OPTION_UNBALANCED_STOP = 'STOP'
OPTION_UNBALANCED_CONTINUE = 'CONTINUE'

OPTION_DEMAND_MODEL_DDA = 'DDA'
OPTION_DEMAND_MODEL_PDA = 'PDA'

OPTION_QUALITY_NONE = 'NONE'
OPTION_QUALITY_CHEMICAL = 'CHEMICAL'
OPTION_QUALITY_AGE = 'AGE'
OPTION_QUALITY_TRACE = 'TRACE'

element_schema = {'type': 'str' , 'optional': True , 'readonly': False}

def get_option_schema(name: str) -> dict[str, dict[str, Any]]:
    return { 'UNITS'             : element_schema,
             'HEADLOSS'          : element_schema,
            #'HYDRAULICS'        : element_schema,
             'VISCOSITY'         : element_schema,
             'SPECIFIC GRAVITY'  : element_schema,
             'TRIALS'            : element_schema,
             'ACCURACY'          : element_schema,
             'FLOWCHANGE'        : element_schema,
             'HEADERROR'         : element_schema,
             'CHECKFREQ'         : element_schema,
             'MAXCHECK'          : element_schema,
             'DAMPLIMIT'         : element_schema,
             'UNBALANCED'        : element_schema,
             'DEMAND MODEL'      : element_schema,
             'MINIMUM PRESSURE'  : element_schema,
             'REQUIRED PRESSURE' : element_schema,
             'PRESSURE EXPONENT' : element_schema,
             'PATTERN'           : element_schema,
             'DEMAND MULTIPLIER' : element_schema,
             'EMITTER EXPONENT'  : element_schema,
             'QUALITY'           : element_schema,
             'DIFFUSIVITY'       : element_schema,
             'TOLERANCE'         : element_schema,
            #'MAP'               : element_schema,
           }


def get_option(name: str) -> dict[str, Any]:
    ts = read_all(name, f"select * from options")
    d = {}
    for e in ts:
        d[e['key']] = str(e['value'])
    return d


def set_option_cache(name: str, cs: ChangeSet) -> SqlChangeSet:
    raw_old = get_option(name)

    old = {}
    new = {}

    new_dict = cs.operations[0]
    schema = get_option_schema(name)
    for key in schema.keys():
        if key in new_dict:
            old[key] = str(raw_old[key])
            new[key] = str(new_dict[key])

    redo_cs = g_update_prefix | { 'type' : 'option' }

    redo_sql = ''
    for key, value in new.items():
        if redo_sql != '':
            redo_sql += '\n'
        redo_sql += f"update options set value = '{value}' where key = '{key}';"
        redo_cs |= { key: value }

    undo_cs = g_update_prefix | { 'type' : 'option' }

    undo_sql = ''
    for key, value in old.items():
        if undo_sql != '':
            undo_sql += '\n'
        undo_sql += f"update options set value = '{value}' where key = '{key}';"
        undo_cs |= { key: value }

    return SqlChangeSet(redo_sql, undo_sql, redo_cs, undo_cs)


def set_option(name: str, cs: ChangeSet) -> ChangeSet:
    return execute_command(name, set_option_cache(name, cs))


def inp_in_option(section: list[str]) -> ChangeSet:
    cs = g_update_prefix | { 'type' : 'option' }
    for s in section:
        line = s.upper().strip()
        for key in get_option_schema('').keys():
            if line.startswith(key):
                value = line.removeprefix(key).strip()
                cs |= { key : value }
    return ChangeSet(cs)


def inp_out_option(name: str) -> list[str]:
    lines = []
    objs = read_all(name, f"select * from options")
    for obj in objs:
        key = obj['key']
        value = obj['value']
        lines.append(f'{key} {value}')
    return lines