# Copyright 2020 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//build/components.gni")
import("//build/rust/rustc_binary.gni")
import("//build/rust/rustc_fuzzer.gni")
import("//build/rust/rustc_library.gni")
import("//src/storage/fs_test/suite.gni")

fatfs_deps = [
  "//sdk/fidl/fuchsia.fs:fuchsia.fs-rustc",
  "//sdk/fidl/fuchsia.io:fuchsia.io-rustc",
  "//sdk/fidl/fuchsia.mem:fuchsia.mem-rustc",
  "//src/lib/fidl/rust/fidl",
  "//src/lib/fuchsia-async",
  "//src/lib/storage/block_client/rust:remote-block-device",
  "//src/lib/storage/vfs/rust:vfs",
  "//src/lib/syslog/rust:syslog",
  "//src/lib/zircon/rust:fuchsia-zircon",
  "//third_party/rust_crates:anyhow",
  "//third_party/rust_crates:async-trait",
  "//third_party/rust_crates:chrono",
  "//third_party/rust_crates:fatfs",
  "//third_party/rust_crates:futures",
  "//third_party/rust_crates:libc",
  "//third_party/rust_crates:scopeguard",
  "//third_party/rust_crates:static_assertions",
]

fatfs_sources = [
  "src/directory.rs",
  "src/file.rs",
  "src/filesystem.rs",
  "src/lib.rs",
  "src/node.rs",
  "src/refs.rs",
  "src/types.rs",
  "src/util.rs",
]

rustc_library("lib") {
  edition = "2021"
  with_unit_tests = true
  name = "fuchsia_fatfs"

  deps = fatfs_deps
  sources = fatfs_sources
}

fuchsia_component("fuchsia-fatfs-test") {
  testonly = true
  deps = [ ":lib_test" ]
  manifest = "meta/fuchsia_fatfs_lib_test.cml"
}

fuchsia_test_package("fuchsia-fatfs-tests") {
  test_components = [ ":fuchsia-fatfs-test" ]
}

rustc_fuzzer("fat-fuzzer") {
  edition = "2021"
  rustfunction = "fuzz_fatfs"

  corpus = "corpus"
  options = [
    "-rss_limit_mb=3072",

    # Set a reasonably low per-task timeout in case the filesystem has problems that cause infinite
    # loops in the fuzzing code (e.g. cycles in the directory tree).
    "-timeout=60",
  ]

  sources = [ "src/fuzzer.rs" ] + fatfs_sources
  deps = fatfs_deps

  non_rust_deps = [ "//zircon/system/ulib/syslog" ]
}

fuzzers_package("fuchsia-fatfs-fuzzer") {
  rust_fuzzers = [ ":fat-fuzzer" ]
}

rustc_binary("fatfs") {
  edition = "2021"

  deps = [
    ":lib",
    "//sdk/fidl/fuchsia.fs:fuchsia.fs-rustc",
    "//sdk/fidl/fuchsia.io:fuchsia.io-rustc",
    "//src/lib/fidl/rust/fidl",
    "//src/lib/fuchsia-async",
    "//src/lib/fuchsia-component",
    "//src/lib/fuchsia-runtime",
    "//src/lib/storage/block_client/rust:remote-block-device",
    "//src/lib/storage/vfs/rust:vfs",
    "//src/lib/syslog/rust:syslog",
    "//src/lib/zircon/rust:fuchsia-zircon",
    "//third_party/rust_crates:anyhow",
    "//third_party/rust_crates:futures",
  ]

  sources = [ "src/main.rs" ]
}

fuchsia_package("fuchsia-fatfs") {
  deps = [ "//src/storage/fuchsia-fatfs/mounter:fatfs-mounter" ]
}

fuchsia_shell_package("fatfs-bin") {
  deps = [ ":fatfs" ]
}

# FAT has different filename rules compared to other filesystems, so we substitute the
# filename tests in the test suite with a different set.
test("fat_filename_tests") {
  sources = [ "filename_tests.cc" ]
  deps = [
    "//src/lib/fxl/test:gtest_main",
    "//src/storage/fs_test",
  ]

  # TODO(fxbug.dev/95833): This target uses the deprecated C bindings.
  # Consider switching to the C++ bindings. See linked bug for details.
  configs += [ "//build/c:fidl-deprecated-c-bindings" ]
}

storage_driver_test_realm_v2_component("fatfs-fat-filename-tests") {
  deps = [ ":fat_filename_tests" ]
}

fs_test_suite("fatfs") {
  deps = [
    "//src/storage/fuchsia-fatfs:fatfs",
    "//zircon/third_party/uapp/fsck-msdosfs",
    "//zircon/third_party/uapp/mkfs-msdosfs",
  ]
  config = {
    disk_format = 4
    is_case_sensitive = false
    is_journaled = false
    timestamp_granularity = 2000000000
    supports_hard_links = false
    supports_resize = false
    supports_sparse_files = false
    max_file_size = 4294967295
    is_slow = true
    sectors_per_cluster = 2
    supports_watch_event_deleted = false
  }

  omit_components = [
    ":fatfs-filename-tests",
    ":fatfs-query-filesystem-tests",
  ]
  extra_components = [ ":fatfs-fat-filename-tests" ]
}

slow_fs_test_suite("fatfs") {
  deps = [
    ":fatfs_fs_test_config",
    "//src/storage/fuchsia-fatfs:fatfs",
    "//zircon/third_party/uapp/fsck-msdosfs",
    "//zircon/third_party/uapp/mkfs-msdosfs",
  ]
}

group("tests") {
  testonly = true
  deps = [
    ":fatfs-fs-tests",
    ":fatfs-slow-fs-tests",
    ":fuchsia-fatfs-fuzzer",
    ":fuchsia-fatfs-tests",
    "//src/storage/fuchsia-fatfs/mounter:tests",
  ]
}