# Copyright 2019 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

"""API information controller."""

from chromite.api import faux
from chromite.api import router as router_lib
from chromite.api import validate
from chromite.lib import constants
from chromite.lib import cros_build_lib


# API version number.
# The major version MUST be updated on breaking changes.
VERSION_MAJOR = 1
# The minor and bug versions are not currently utilized, but put in place
# to simplify future requirements.
VERSION_MINOR = 0
VERSION_BUG = 0


def _CompileProtoSuccess(_input_proto, output_proto, _config):
    """Mock success response for CompileProto."""
    output_proto.modified_files.add().path = "/code/chromite/api/gen/foo_pb2.py"


@faux.success(_CompileProtoSuccess)
@faux.empty_error
@validate.validation_complete
def CompileProto(_input_proto, output_proto, _config):
    """Compile the Build API proto, returning the list of modified files."""
    cmd = [constants.CHROMITE_DIR / "api" / "compile_build_api_proto"]
    cros_build_lib.run(cmd)
    result = cros_build_lib.run(
        ["git", "status", "--porcelain=v1"],
        cwd=constants.CHROMITE_DIR,
        capture_output=True,
        encoding="utf-8",
    )
    for line in result.stdout.splitlines():
        if not line:
            continue
        path = line.split()[-1]
        output_proto.modified_files.add().path = str(
            constants.CHROMITE_DIR / path
        )


@faux.all_empty
@validate.validation_complete
def GetMethods(_input_proto, output_proto, _config):
    """List all of the registered methods."""
    router = router_lib.GetRouter()
    for method in router.ListMethods():
        output_proto.methods.add().method = method


@validate.validation_complete
def GetVersion(_input_proto, output_proto, _config):
    """Get the Build API major version number."""
    output_proto.version.major = VERSION_MAJOR
    output_proto.version.minor = VERSION_MINOR
    output_proto.version.bug = VERSION_BUG