package git

import (
	"git-get/pkg/git/test"
	"testing"
)

func TestFinder(t *testing.T) {
	tests := []struct {
		name       string
		reposMaker func(*testing.T) string
		want       int
	}{
		{
			name:       "no repos",
			reposMaker: makeNoRepos,
			want:       0,
		},
		{
			name:       "single repos",
			reposMaker: makeSingleRepo,
			want:       1,
		},
		{
			name:       "single nested repo",
			reposMaker: makeNestedRepo,
			want:       1,
		},
		{
			name:       "multiple nested repo",
			reposMaker: makeMultipleNestedRepos,
			want:       2,
		},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			root := test.reposMaker(t)

			finder := NewRepoFinder(root)
			finder.Find()

			if len(finder.repos) != test.want {
				t.Errorf("expected %d; got %d", test.want, len(finder.repos))
			}
		})
	}
}

func makeNoRepos(t *testing.T) string {
	root := test.TempDir(t, "")

	return root
}

func makeSingleRepo(t *testing.T) string {
	root := test.TempDir(t, "")

	test.RepoEmptyInDir(t, root)

	return root
}

func makeNestedRepo(t *testing.T) string {
	// a repo with single nested repo should still be counted as one beacause finder doesn't traverse inside nested repos
	root := test.TempDir(t, "")

	r := test.RepoEmptyInDir(t, root)
	test.RepoEmptyInDir(t, r.Path())

	return root
}

func makeMultipleNestedRepos(t *testing.T) string {
	root := test.TempDir(t, "")

	// create two repos inside root - should be counted as 2
	repo1 := test.RepoEmptyInDir(t, root)
	repo2 := test.RepoEmptyInDir(t, root)

	// created repos nested inside two parent roots - shouldn't be counted
	test.RepoEmptyInDir(t, repo1.Path())
	test.RepoEmptyInDir(t, repo1.Path())
	test.RepoEmptyInDir(t, repo2.Path())

	// create a empty dir inside root - shouldn't be counted
	test.TempDir(t, root)

	return root
}