# Copyright (C) 2014-2018 Enzien Audio, Ltd.
# Copyright (C) 2023-2024 Wasted Audio
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

from typing import Dict, List

from .HeavyObject import HeavyObject

from hvcc.types.IR import IRSignalList


class SignalPhasor(HeavyObject):

    c_struct = "SignalPhasor"
    preamble = "sPhasor"

    @classmethod
    def get_C_header_set(cls) -> set:
        return {"HvSignalPhasor.h"}

    @classmethod
    def get_C_file_set(cls) -> set:
        return {"HvSignalPhasor.h", "HvSignalPhasor.c"}

    @classmethod
    def get_C_init(cls, obj_type: str, obj_id: str, args: Dict) -> List[str]:
        if obj_type == "__phasor~f":
            return [f"sPhasor_init(&sPhasor_{obj_id}, sampleRate);"]
        elif obj_type == "__phasor_k~f":
            return [f"sPhasor_k_init(&sPhasor_{obj_id}, {args['frequency']}f, sampleRate);"]
        else:
            raise Exception()

    @classmethod
    def get_C_free(cls, obj_type: str, obj_id: str, args: Dict) -> List[str]:
        return []

    @classmethod
    def get_C_onMessage(cls, obj_type: str, obj_id: str, inlet_index: int, args: Dict) -> List[str]:
        if obj_type == "__phasor~f":
            return [f"sPhasor_onMessage(_c, &Context(_c)->sPhasor_{obj_id}, {inlet_index}, m);"]
        elif obj_type == "__phasor_k~f":
            return [f"sPhasor_k_onMessage(_c, &Context(_c)->sPhasor_{obj_id}, {inlet_index}, m);"]
        else:
            raise Exception()

    @classmethod
    def get_C_process(cls, process_dict: IRSignalList, obj_type: str, obj_id: str, args: Dict) -> List[str]:
        if obj_type == "__phasor~f":
            return [
                "__hv_phasor_f(&sPhasor_{0}, VIf({1}), VOf({2}));".format(
                    process_dict.id,
                    cls._c_buffer(process_dict.inputBuffers[0]),
                    cls._c_buffer(process_dict.outputBuffers[0])
                )
            ]
        elif obj_type == "__phasor_k~f":
            return [
                "__hv_phasor_k_f(&sPhasor_{0}, VOf({1}));".format(
                    process_dict.id,
                    cls._c_buffer(process_dict.outputBuffers[0])
                )
            ]
        else:
            raise Exception(f"Unknown object type \"{obj_type}\".")
