/*
Copyright 2021 Google LLC All Rights Reserved.

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 commands

import (
	"context"
	"fmt"
	"path/filepath"
	"runtime"
	"strings"
	"testing"

	"github.com/google/ko/pkg/build"
	"github.com/google/ko/pkg/commands/options"
)

func TestPublishImages(t *testing.T) {
	repo := "registry.example.com/repository"
	sampleAppDir, err := sampleAppRelDir()
	if err != nil {
		t.Fatalf("sampleAppRelDir(): %v", err)
	}
	tests := []struct {
		description string
		publishArg  string
		importpath  string
	}{
		{
			description: "import path with ko scheme",
			publishArg:  "ko://github.com/google/ko/test",
			importpath:  "github.com/google/ko/test",
		},
		{
			description: "import path without ko scheme",
			publishArg:  "github.com/google/ko/test",
			importpath:  "github.com/google/ko/test",
		},
		{
			description: "file path",
			publishArg:  sampleAppDir,
			importpath:  "github.com/google/ko/test",
		},
	}
	for _, test := range tests {
		ctx := context.Background()
		bo := &options.BuildOptions{
			ConcurrentBuilds: 1,
		}
		builder, err := NewBuilder(ctx, bo)
		if err != nil {
			t.Fatalf("%s: MakeBuilder(): %v", test.description, err)
		}
		po := &options.PublishOptions{
			DockerRepo:          repo,
			PreserveImportPaths: true,
		}
		publisher, err := NewPublisher(po)
		if err != nil {
			t.Fatalf("%s: MakePublisher(): %v", test.description, err)
		}
		importpathWithScheme := build.StrictScheme + test.importpath
		refs, err := PublishImages(ctx, []string{test.publishArg}, publisher, builder)
		if err != nil {
			t.Fatalf("%s: PublishImages(): %v", test.description, err)
		}
		ref, exists := refs[importpathWithScheme]
		if !exists {
			t.Errorf("%s: could not find image for importpath %s", test.description, importpathWithScheme)
		}
		gotImageName := ref.Context().Name()
		wantImageName := strings.ToLower(fmt.Sprintf("%s/%s", repo, test.importpath))
		if gotImageName != wantImageName {
			t.Errorf("%s: got %s, wanted %s", test.description, gotImageName, wantImageName)
		}
	}
}

func sampleAppRelDir() (string, error) {
	_, filename, _, ok := runtime.Caller(0)
	if !ok {
		return "", fmt.Errorf("could not get current filename")
	}
	basepath := filepath.Dir(filename)
	testAppDir := filepath.Join(basepath, "..", "..", "test")
	return filepath.Rel(basepath, testAppDir)
}
