# Copyright 2026 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

FilegroupInfo = provider(fields = ["files", "manifest"])

def _filegroup_impl(ctx):
  files = depset(ctx.files.srcs)
  manifest = ctx.actions.declare_file(ctx.label.name + ".manifest")
  ctx.actions.write(
    manifest,
    "manifest for " + str(ctx.label) + "\n" +
    "\n".join(sorted([f.path for f in ctx.files.srcs]))
  )
  return [
    DefaultInfo(files = files),
    FilegroupInfo(files = files, manifest = manifest),
  ]

filegroup = rule(
    implementation = _filegroup_impl,
    attrs = {
        "srcs": attr.label_list(allow_files = True),
    }
)

def _filegroups_impl(ctx):
  filegroups = [fg[FilegroupInfo].files for fg in ctx.attr.filegroups]
  return [DefaultInfo(files = depset(transitive = filegroups))]

filegroups = rule(
    implementation = _filegroups_impl,
    attrs = {
        "filegroups": attr.label_list(allow_files = True),
    }
)