/*
Copyright 2018 Google LLC

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 util

import (
	"github.com/GoogleCloudPlatform/k8s-container-builder/testutil"
	"sort"
	"testing"
)

var buildContextPath = "../../integration_tests/"

var relativeFilepathTests = []struct {
	srcName          string
	filename         string
	dest             string
	cwd              string
	buildcontext     string
	expectedFilepath string
}{
	{
		srcName:          "context/foo",
		filename:         "context/foo",
		dest:             "/foo",
		cwd:              "/",
		expectedFilepath: "/foo",
	},
	{
		srcName:          "context/foo",
		filename:         "context/foo",
		dest:             "/foodir/",
		cwd:              "/",
		expectedFilepath: "/foodir/foo",
	},
	{
		srcName:          "context/foo",
		filename:         "./context/foo",
		cwd:              "/",
		dest:             "foo",
		expectedFilepath: "/foo",
	},
	{
		srcName:          "context/bar/",
		filename:         "context/bar/bam/bat",
		cwd:              "/",
		dest:             "pkg/",
		expectedFilepath: "/pkg/bam/bat",
	},
	{
		srcName:          "context/bar/",
		filename:         "context/bar/bam/bat",
		cwd:              "/newdir",
		dest:             "pkg/",
		expectedFilepath: "/newdir/pkg/bam/bat",
	},
	{
		srcName:          "./context/empty",
		filename:         "context/empty",
		cwd:              "/",
		dest:             "/empty",
		expectedFilepath: "/empty",
	},
	{
		srcName:          "./context/empty",
		filename:         "context/empty",
		cwd:              "/dir",
		dest:             "/empty",
		expectedFilepath: "/dir/empty",
	},
	{
		srcName:          "./",
		filename:         "./",
		cwd:              "/",
		dest:             "/dir",
		expectedFilepath: "/dir",
	},
	{
		srcName:          "./",
		filename:         "context/foo",
		cwd:              "/",
		dest:             "/dir",
		expectedFilepath: "/dir/context/foo",
	},
	{
		srcName:          ".",
		filename:         "context/bar",
		cwd:              "/",
		dest:             "/dir",
		expectedFilepath: "/dir/context/bar",
	},
	{
		srcName:          ".",
		filename:         "context/bar",
		cwd:              "/",
		dest:             "/dir",
		expectedFilepath: "/dir/context/bar",
	},
}

func Test_RelativeFilepath(t *testing.T) {
	for _, test := range relativeFilepathTests {
		actualFilepath, err := RelativeFilepath(test.filename, test.srcName, test.dest, test.cwd, buildContextPath)
		testutil.CheckErrorAndDeepEqual(t, false, err, test.expectedFilepath, actualFilepath)
	}
}

var matchSourcesTests = []struct {
	srcs          []string
	files         []string
	cwd           string
	expectedFiles []string
}{
	{
		srcs: []string{
			"pkg/*",
		},
		files: []string{
			"pkg/a",
			"pkg/b",
			"/pkg/d",
			"pkg/b/d/",
			"dir/",
		},
		cwd: "/",
		expectedFiles: []string{
			"pkg/a",
			"pkg/b",
			"/pkg/d",
		},
	},
}

func Test_MatchSources(t *testing.T) {
	for _, test := range matchSourcesTests {
		actualFiles, err := matchSources(test.srcs, test.files, test.cwd)
		sort.Strings(actualFiles)
		sort.Strings(test.expectedFiles)
		testutil.CheckErrorAndDeepEqual(t, false, err, test.expectedFiles, actualFiles)
	}
}

var isSrcValidTests = []struct {
	srcsAndDest []string
	files       map[string][]string
	shouldErr   bool
}{
	{
		srcsAndDest: []string{
			"src1",
			"src2",
			"dest",
		},
		files:     nil,
		shouldErr: true,
	},
	{
		srcsAndDest: []string{
			"src1",
			"src2",
			"dest/",
		},
		files:     nil,
		shouldErr: false,
	},
	{
		srcsAndDest: []string{
			"src2/",
			"dest",
		},
		files:     nil,
		shouldErr: false,
	},
	{
		srcsAndDest: []string{
			"src2",
			"dest",
		},
		files:     nil,
		shouldErr: false,
	},
	{
		srcsAndDest: []string{
			"src2",
			"src*",
			"dest/",
		},
		files:     nil,
		shouldErr: false,
	},
	{
		srcsAndDest: []string{
			"src2",
			"src*",
			"dest",
		},
		files: map[string][]string{
			"src2": {
				"src2/a",
				"src2/b",
			},
			"src*": {},
		},
		shouldErr: true,
	},
	{
		srcsAndDest: []string{
			"src2",
			"src*",
			"dest",
		},
		files: map[string][]string{
			"src2": {
				"src2/a",
			},
			"src*": {},
		},
		shouldErr: false,
	},
	{
		srcsAndDest: []string{
			"src2",
			"src*",
			"dest",
		},
		files: map[string][]string{
			"src2": {},
			"src*": {},
		},
		shouldErr: true,
	},
}

func Test_IsSrcsValid(t *testing.T) {
	for _, test := range isSrcValidTests {
		err := IsSrcsValid(test.srcsAndDest, test.files)
		testutil.CheckError(t, test.shouldErr, err)
	}
}

var testResolveSources = []struct {
	srcsAndDest []string
	cwd         string
	expectedMap map[string][]string
}{
	{
		srcsAndDest: []string{
			"context/foo",
			"context/b*",
			"dest/",
		},
		cwd: "/",
		expectedMap: map[string][]string{
			"context/foo": {
				"context/foo",
			},
			"context/bar": {
				"context/bar",
				"context/bar/bam",
				"context/bar/bam/bat",
				"context/bar/bat",
				"context/bar/baz",
			},
		},
	},
}

func Test_ResolveSources(t *testing.T) {
	for _, test := range testResolveSources {
		actualMap, err := ResolveSources(test.srcsAndDest, buildContextPath, test.cwd)
		testutil.CheckErrorAndDeepEqual(t, false, err, test.expectedMap, actualMap)
	}
}