from epics import get_pv as PV

from data import load_data, save_data, mk_db
from log import log
from utils import toggle


FN_ENTRIES = "/ioc/data/SATES20-CPCL-DYNA/entries"
FN_DB_TMPL = "/ioc/data/SATES20-CPCL-DYNA/dynamic.template"


pv_name = PV("SATES20-DYNA:NAME")
pv_dtyp = PV("SATES20-DYNA:TYPE")
pv_dtyp.get_ctrlvars() # without this, the enum returns only str(number)
pv_list = PV("SATES20-DYNA:LIST")


@toggle
def cb_add(value=None, **kwargs):
    name = pv_name.get()
    if not name:
        log.info(f"add: ignoring name={repr(name)}")
        return
    dtyp = pv_dtyp.get(as_string=True)
    log.info(f"add: name={repr(name)} type={repr(dtyp)} {kwargs}")
    data = load_data(FN_ENTRIES)
    data[name] = dtyp
    save_data(data, FN_ENTRIES)
    mk_db(data, FN_DB_TMPL)
    log.info(f"data: {data}")
    pv_list.put(mk_printable_data(data))


@toggle
def cb_remove(value=None, **kwargs):
    name = pv_name.get()
    if not name:
        log.info(f"remove: ignoring name={repr(name)}")
        return
    log.info(f"remove: name={repr(name)} {kwargs}")
    data = load_data(FN_ENTRIES)
    data.pop(name, None)
    save_data(data, FN_ENTRIES)
    mk_db(data, FN_DB_TMPL)
    log.info(f"data: {data}")
    pv_list.put(mk_printable_data(data))


@toggle
def cb_clear(value=None, **kwargs):
    log.info(f"clear: {kwargs}")
    data = {}
    save_data(data, FN_ENTRIES)
    mk_db(data, FN_DB_TMPL)
    log.info(f"data: {data}")
    pv_list.put(mk_printable_data(data))


pv_add = PV("SATES20-DYNA:ADD")
pv_add.add_callback(cb_add)

pv_remove = PV("SATES20-DYNA:REMOVE")
pv_remove.add_callback(cb_remove)

pv_clear = PV("SATES20-DYNA:CLEAR")
pv_clear.add_callback(cb_clear)


def mk_printable_data(data):
    return "\n".join(f"{k} ({v})" for k, v in sorted(data.items()))