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from ..utils.override import overrides
from ..boards.mem_mode import MemMode
from .random_generator_core import RandomGeneratorCore

from .abstract_processor import AbstractProcessor
from ..boards.abstract_board import AbstractBoard

from typing import List


class RandomGenerator(AbstractProcessor):
    def __init__(
        self,
        num_cores: int = 1,
        duration: str = "1ms",
        rate: str = "100GB/s",
        block_size: int = 64,
        min_addr: int = 0,
        max_addr: int = 32768,
        rd_perc: int = 100,
        data_limit: int = 0,
    ) -> None:
        super(RandomGenerator, self).__init__(
            cores=self._create_cores(
                num_cores=num_cores,
                duration=duration,
                rate=rate,
                block_size=block_size,
                min_addr=min_addr,
                max_addr=max_addr,
                rd_perc=rd_perc,
                data_limit=data_limit,
            )
        )
        """The random generator

        This class defines an external interface to create a list of random
        generator cores that could replace the processing cores in a board.

        :param num_cores: The number of linear generator cores to create.
        :param duration: The number of ticks for the generator to generate
        traffic.
        :param rate: The rate at which the synthetic data is read/written.
        :param block_size: The number of bytes to be read/written with each
        request.
        :param min_addr: The lower bound of the address range the generator
        will read/write from/to.
        :param max_addr: The upper bound of the address range the generator
        will read/write from/to.
        :param rd_perc: The percentage of read requests among all the generated
        requests. The write percentage would be equal to 100 - rd_perc.
        :param data_limit: The amount of data in bytes to read/write by the
        generator before stopping generation.
        """

    def _create_cores(
        self,
        num_cores,
        duration,
        rate,
        block_size,
        min_addr,
        max_addr,
        rd_perc,
        data_limit,
    ) -> List[RandomGeneratorCore]:
        """
        The helper function to create the cores for the generator, it will use
        the same inputs as the constructor function.
        """
        return [
            RandomGeneratorCore(
                duration=duration,
                rate=rate,
                block_size=block_size,
                min_addr=min_addr,
                max_addr=max_addr,
                rd_perc=rd_perc,
                data_limit=data_limit,
            )
            for i in range(num_cores)
        ]

    @overrides(AbstractProcessor)
    def incorporate_processor(self, board: AbstractBoard) -> None:
        board.set_mem_mode(MemMode.TIMING)

    def start_traffic(self) -> None:
        """
        This function will start the assigned traffic to this generator.
        """
        for core in self.cores:
            core.start_traffic()