// Copyright 2022 The Jujutsu Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use std::path::Path;

use crate::common::{get_stderr_string, TestEnvironment};

pub mod common;

#[test]
fn test_git_export_conflicting_git_refs() {
    let test_env = TestEnvironment::default();
    test_env.jj_cmd_success(test_env.env_root(), &["init", "repo", "--git"]);
    let repo_path = test_env.env_root().join("repo");

    test_env.jj_cmd_success(&repo_path, &["branch", "create", "main"]);
    test_env.jj_cmd_success(&repo_path, &["branch", "create", "main/sub"]);
    let assert = test_env
        .jj_cmd(&repo_path, &["git", "export"])
        .assert()
        .success()
        .stdout("");
    insta::assert_snapshot!(get_stderr_string(&assert), @r###"
    Failed to export some branches:
      main/sub
    Hint: Git doesn't allow a branch name that looks like a parent directory of
    another (e.g. `foo` and `foo/bar`). Try to rename the branches that failed to
    export or their "parent" branches.
    "###);
}

#[test]
fn test_git_import_remote_only_branch() {
    let test_env = TestEnvironment::default();
    test_env.jj_cmd_success(test_env.env_root(), &["init", "repo", "--git"]);
    let repo_path = test_env.env_root().join("repo");

    // Create non-empty git repo to add as a remote
    let git_repo_path = test_env.env_root().join("git-repo");
    let git_repo = git2::Repository::init(git_repo_path).unwrap();
    let signature =
        git2::Signature::new("Some One", "some.one@example.com", &git2::Time::new(0, 0)).unwrap();
    let mut tree_builder = git_repo.treebuilder(None).unwrap();
    let file_oid = git_repo.blob(b"content").unwrap();
    tree_builder
        .insert("file", file_oid, git2::FileMode::Blob.into())
        .unwrap();
    let tree_oid = tree_builder.write().unwrap();
    let tree = git_repo.find_tree(tree_oid).unwrap();
    test_env.jj_cmd_success(
        &repo_path,
        &["git", "remote", "add", "origin", "../git-repo"],
    );

    // Import using default config
    git_repo
        .commit(
            Some("refs/heads/feature1"),
            &signature,
            &signature,
            "message",
            &tree,
            &[],
        )
        .unwrap();
    test_env.jj_cmd_success(&repo_path, &["git", "fetch", "--remote=origin"]);
    insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
    feature1: 9f01a0e04879 message
    "###);

    // Import using git.auto_local_branch = false
    git_repo
        .commit(
            Some("refs/heads/feature2"),
            &signature,
            &signature,
            "message",
            &tree,
            &[],
        )
        .unwrap();
    test_env.add_config("git.auto-local-branch = false");
    test_env.jj_cmd_success(&repo_path, &["git", "fetch", "--remote=origin"]);
    insta::assert_snapshot!(get_branch_output(&test_env, &repo_path), @r###"
    feature1: 9f01a0e04879 message
    feature2 (deleted)
      @origin: 9f01a0e04879 message
    "###);
}

fn get_branch_output(test_env: &TestEnvironment, repo_path: &Path) -> String {
    test_env.jj_cmd_success(repo_path, &["branch", "list"])
}