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"""File contains the some helper functions with common queries for artifacts
in the ArtifactDB.
"""

from typing import Iterator

from ._artifactdb import ArtifactDB
from .artifact import Artifact


def _getByType(db: ArtifactDB, typ: str, limit: int = 0) -> Iterator[Artifact]:
    """Returns a generator of Artifacts with matching `type` from the db.

    Limit specifies the maximum number of results to return.
    """
    data = db.searchByType(typ, limit=limit)

    for d in data:
        yield Artifact(d)


def getDiskImages(db: ArtifactDB, limit: int = 0) -> Iterator[Artifact]:
    """Returns a generator of disk images (type = disk image).

    Limit specifies the maximum number of results to return.
    """

    return _getByType(db, "disk image", limit)


def getgem5Binaries(db: ArtifactDB, limit: int = 0) -> Iterator[Artifact]:
    """Returns a generator of gem5 binaries (type = gem5 binary).

    Limit specifies the maximum number of results to return.
    """

    return _getByType(db, "gem5 binary", limit)


def getLinuxBinaries(db: ArtifactDB, limit: int = 0) -> Iterator[Artifact]:
    """Returns a generator of Linux kernel binaries (type = kernel).

    Limit specifies the maximum number of results to return.
    """

    return _getByType(db, "kernel", limit)


def getByName(db: ArtifactDB, name: str, limit: int = 0) -> Iterator[Artifact]:
    """Returns all objects mathching `name` in database.

    Limit specifies the maximum number of results to return.
    """
    data = db.searchByName(name, limit=limit)

    for d in data:
        yield Artifact(d)
