load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")

def maybe(repo_rule, name, **kwargs):
    """Defines a repository if it does not already exist.
    """
    if name not in native.existing_rules():
        repo_rule(name = name, **kwargs)

def github_archive(name, repo_name, commit, sha256 = None, kind = "zip"):
    """Defines a GitHub commit-based repository rule."""
    project = repo_name[repo_name.index("/"):]
    http_archive(
        name = name,
        sha256 = sha256,
        strip_prefix = "{project}-{commit}".format(project = project, commit = commit),
        urls = [u.format(commit = commit, repo_name = repo_name, kind = kind) for u in [
            "https://mirror.bazel.build/github.com/{repo_name}/archive/{commit}.{kind}",
            "https://github.com/{repo_name}/archive/{commit}.{kind}",
        ]],
    )

def kythe_rule_repositories():
    """Defines external repositories for Kythe Bazel rules.

    These repositories must be loaded before calling external.bzl%kythe_dependencies.
    """
    maybe(
        http_archive,
        name = "bazel_skylib",
        sha256 = "e5d90f0ec952883d56747b7604e2a15ee36e288bb556c3d0ed33e818a4d971f2",
        strip_prefix = "bazel-skylib-1.0.2",
        urls = ["https://github.com/bazelbuild/bazel-skylib/archive/1.0.2.tar.gz"],
    )

    maybe(
        http_archive,
        name = "io_bazel_rules_go",
        urls = [
            "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.21.3/rules_go-v0.21.3.tar.gz",
            "https://github.com/bazelbuild/rules_go/releases/download/v0.21.3/rules_go-v0.21.3.tar.gz",
        ],
        sha256 = "af04c969321e8f428f63ceb73463d6ea817992698974abeff0161e069cd08bd6",
    )

    maybe(
        http_archive,
        name = "rules_cc",
        sha256 = "29daf0159f0cf552fcff60b49d8bcd4f08f08506d2da6e41b07058ec50cfeaec",
        strip_prefix = "rules_cc-b7fe9697c0c76ab2fd431a891dbb9a6a32ed7c3e",
        urls = [
            "https://mirror.bazel.build/github.com/bazelbuild/rules_cc/archive/b7fe9697c0c76ab2fd431a891dbb9a6a32ed7c3e.tar.gz",
            "https://github.com/bazelbuild/rules_cc/archive/b7fe9697c0c76ab2fd431a891dbb9a6a32ed7c3e.tar.gz",
        ],
    )

    maybe(
        http_archive,
        name = "rules_java",
        url = "https://github.com/bazelbuild/rules_java/archive/973a93dd2d698929264d1028836f6b9cc60ff817.zip",
        sha256 = "a6cb0dbe343b67c7d4f3f11a68e327acdfc71fee1e17affa4e605129fc56bb15",
        strip_prefix = "rules_java-973a93dd2d698929264d1028836f6b9cc60ff817",
    )

    maybe(
        http_archive,
        name = "rules_proto",
        sha256 = "e4fe70af52135d2ee592a07f916e6e1fc7c94cf8786c15e8c0d0f08b1fe5ea16",
        strip_prefix = "rules_proto-97d8af4dc474595af3900dd85cb3a29ad28cc313",
        url = "https://github.com/bazelbuild/rules_proto/archive/97d8af4dc474595af3900dd85cb3a29ad28cc313.zip",
    )

    maybe(
        http_archive,
        name = "bazel_gazelle",
        urls = [
            "https://storage.googleapis.com/bazel-mirror/github.com/bazelbuild/bazel-gazelle/releases/download/v0.20.0/bazel-gazelle-v0.20.0.tar.gz",
            "https://github.com/bazelbuild/bazel-gazelle/releases/download/v0.20.0/bazel-gazelle-v0.20.0.tar.gz",
        ],
        sha256 = "d8c45ee70ec39a57e7a05e5027c32b1576cc7f16d9dd37135b0eddde45cf1b10",
    )

    maybe(
        http_archive,
        name = "build_bazel_rules_nodejs",
        sha256 = "b6670f9f43faa66e3009488bbd909bc7bc46a5a9661a33f6bc578068d1837f37",
        urls = ["https://github.com/bazelbuild/rules_nodejs/releases/download/1.3.0/rules_nodejs-1.3.0.tar.gz"],
    )

    maybe(
        http_archive,
        name = "rules_jvm_external",
        sha256 = "e5b97a31a3e8feed91636f42e19b11c49487b85e5de2f387c999ea14d77c7f45",
        strip_prefix = "rules_jvm_external-2.9",
        urls = ["https://github.com/bazelbuild/rules_jvm_external/archive/2.9.zip"],
    )

    maybe(
        http_archive,
        name = "rules_python",
        sha256 = "e5470e92a18aa51830db99a4d9c492cc613761d5bdb7131c04bd92b9834380f6",
        strip_prefix = "rules_python-4b84ad270387a7c439ebdccfd530e2339601ef27",
        urls = [
            "https://mirror.bazel.build/github.com/bazelbuild/rules_python/archive/4b84ad270387a7c439ebdccfd530e2339601ef27.tar.gz",
            "https://github.com/bazelbuild/rules_python/archive/4b84ad270387a7c439ebdccfd530e2339601ef27.tar.gz",
        ],
    )