// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package postgres

import (
	"context"
	"testing"

	"github.com/google/go-cmp/cmp"
	"golang.org/x/pkgsite/internal/licenses"
	"golang.org/x/pkgsite/internal/testing/sample"
)

func TestLegacyGetModuleLicenses(t *testing.T) {
	modulePath := "test.module"
	testModule := sample.Module(modulePath, "v1.2.3", "", "foo", "bar")
	testModule.LegacyPackages[0].Licenses = []*licenses.Metadata{{Types: []string{"ISC"}, FilePath: "LICENSE"}}
	testModule.LegacyPackages[1].Licenses = []*licenses.Metadata{{Types: []string{"MIT"}, FilePath: "foo/LICENSE"}}
	testModule.LegacyPackages[2].Licenses = []*licenses.Metadata{{Types: []string{"GPL2"}, FilePath: "bar/LICENSE.txt"}}

	defer ResetTestDB(testDB, t)
	ctx, cancel := context.WithTimeout(context.Background(), testTimeout)
	defer cancel()

	testModule.Licenses = nil
	for _, p := range testModule.LegacyPackages {
		testModule.Licenses = append(testModule.Licenses, &licenses.License{
			Metadata: p.Licenses[0],
			Contents: []byte(`Lorem Ipsum`),
		})
	}

	if err := testDB.InsertModule(ctx, testModule); err != nil {
		t.Fatal(err)
	}

	got, err := testDB.LegacyGetModuleLicenses(ctx, modulePath, testModule.Version)
	if err != nil {
		t.Fatal(err)
	}
	// We only want the top-level license.
	wantLicenses := []*licenses.License{testModule.Licenses[0]}
	if diff := cmp.Diff(wantLicenses, got); diff != "" {
		t.Errorf("testDB.LegacyGetModuleLicenses(ctx, %q, %q) mismatch (-want +got):\n%s", modulePath, testModule.Version, diff)
	}
}

func TestLegacyGetPackageLicenses(t *testing.T) {
	modulePath := "test.module"
	testModule := sample.Module(modulePath, "v1.2.3", "", "foo")
	testModule.LegacyPackages[0].Licenses = nil
	testModule.LegacyPackages[1].Licenses = sample.LicenseMetadata

	tests := []struct {
		label, pkgPath string
		wantLicenses   []*licenses.License
	}{
		{
			label:        "package with licenses",
			pkgPath:      "test.module/foo",
			wantLicenses: sample.Licenses,
		}, {
			label:        "package with no licenses",
			pkgPath:      "test.module",
			wantLicenses: nil,
		},
	}

	defer ResetTestDB(testDB, t)
	ctx, cancel := context.WithTimeout(context.Background(), testTimeout)
	defer cancel()

	if err := testDB.InsertModule(ctx, testModule); err != nil {
		t.Fatal(err)
	}

	for _, test := range tests {
		t.Run(test.label, func(t *testing.T) {
			got, err := testDB.LegacyGetPackageLicenses(ctx, test.pkgPath, modulePath, testModule.Version)
			if err != nil {
				t.Fatal(err)
			}
			if diff := cmp.Diff(test.wantLicenses, got); diff != "" {
				t.Errorf("testDB.GetLicenses(ctx, %q, %q) mismatch (-want +got):\n%s", test.pkgPath, testModule.Version, diff)
			}
		})
	}
}