// Copyright 2019 The Kubernetes 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
//
//      http://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.

package environment

import (
	"path/filepath"
	"strings"
	"testing"

	"k8s.io/client-go/util/homedir"

	"sigs.k8s.io/krew/pkg/constants"
)

func TestMustGetKrewPaths_resolvesToHomeDir(t *testing.T) {
	home := homedir.HomeDir()
	expectedBase := filepath.Join(home, ".krew")
	p := MustGetKrewPaths()
	if got := p.BasePath(); got != expectedBase {
		t.Fatalf("MustGetKrewPaths()=%s; expected=%s", got, expectedBase)
	}
}

func TestMustGetKrewPaths_envOverride(t *testing.T) {
	custom := filepath.FromSlash("/custom/krew/path")
	t.Setenv("KREW_ROOT", custom)

	p := MustGetKrewPaths()
	if expected, got := custom, p.BasePath(); got != expected {
		t.Fatalf("MustGetKrewPaths()=%s; expected=%s", got, expected)
	}
}

func TestPaths(t *testing.T) {
	base := filepath.FromSlash("/foo")
	p := NewPaths(base)
	if got := p.BasePath(); got != base {
		t.Errorf("BasePath()=%s; expected=%s", got, base)
	}
	if got, expected := p.BinPath(), filepath.FromSlash("/foo/bin"); got != expected {
		t.Errorf("BinPath()=%s; expected=%s", got, expected)
	}

	if got, expected := p.IndexPath(constants.DefaultIndexName), filepath.FromSlash("/foo/index/default"); got != expected {
		t.Errorf("IndexPath(\"%s\")=%s; expected=%s", constants.DefaultIndexName, got, expected)
	}
	if got, expected := p.IndexPluginsPath(constants.DefaultIndexName), filepath.FromSlash("/foo/index/default/plugins"); got != expected {
		t.Errorf("IndexPluginsPath(\"%s\")=%s; expected=%s", constants.DefaultIndexName, got, expected)
	}

	if got, expected := p.InstallPath(), filepath.FromSlash("/foo/store"); got != expected {
		t.Errorf("InstallPath()=%s; expected=%s", got, expected)
	}
	if got, expected := p.PluginInstallPath("my-plugin"), filepath.FromSlash("/foo/store/my-plugin"); got != expected {
		t.Errorf("PluginInstallPath()=%s; expected=%s", got, expected)
	}
	if got, expected := p.PluginVersionInstallPath("my-plugin", "v1"), filepath.FromSlash("/foo/store/my-plugin/v1"); got != expected {
		t.Errorf("PluginVersionInstallPath()=%s; expected=%s", got, expected)
	}
	if got := p.InstallReceiptsPath(); !strings.HasSuffix(got, filepath.FromSlash("receipts")) {
		t.Errorf("InstallReceiptsPath()=%s; expected suffix 'receipts'", got)
	}
	if got := p.PluginInstallReceiptPath("my-plugin"); !strings.HasSuffix(got, filepath.FromSlash("receipts/my-plugin.yaml")) {
		t.Errorf("PluginInstallReceiptPath()=%s; expected suffix 'receipts/my-plugin.yaml'", got)
	}
}