package dotnet

import (
	"reflect"
	"testing"

	"github.com/stretchr/testify/assert"

	"github.com/anchore/syft/syft/cpe"
	"github.com/anchore/syft/syft/file"
	"github.com/anchore/syft/syft/pkg"
	"github.com/anchore/syft/syft/pkg/cataloger/internal/pkgtest"
)

func Test_getDepsJSONFilePrefix(t *testing.T) {
	tests := []struct {
		name string
		path string
		want string
	}{
		{
			name: "windows-style full path",
			path: `C:\Code\Projects\My-Project\My.Rest.Project.deps.json`,
			want: "My.Rest.Project",
		},
		{
			name: "leading backslash",
			path: `\My.Project.deps.json`,
			want: "My.Project",
		},
		{
			name: "unix-style path with lots of prefixes",
			path: "/my/cool/project/cool-project.deps.json",
			want: "cool-project",
		},
		{
			name: "unix-style relative path",
			path: "cool-project/my-dotnet-project.deps.json",
			want: "my-dotnet-project",
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			assert.Equalf(t, tt.want, getDepsJSONFilePrefix(tt.path), "getDepsJSONFilePrefix(%v)", tt.path)
		})
	}
}

func Test_NewDotnetBinaryPackage(t *testing.T) {
	tests := []struct {
		name             string
		versionResources map[string]string
		expectedPackage  pkg.Package
	}{
		{
			name: "dotnet package with extra version info",
			versionResources: map[string]string{
				"InternalName":     "Microsoft.IdentityModel.Clients.ActiveDirectory.Platform.dll",
				"FileVersion":      "3.14.40721.0918    xxxfffdddjjjj",
				"FileDescription":  "Active Directory Authentication Library",
				"ProductName":      "Active Directory Authentication Library",
				"Comments":         "",
				"CompanyName":      "Microsoft Corporation",
				"LegalTrademarks":  "",
				"LegalCopyright":   "Copyright (c) Microsoft Corporation. All rights reserved.",
				"OriginalFilename": "Microsoft.IdentityModel.Clients.ActiveDirectory.Platform.dll",
				"ProductVersion":   "c61f043686a544863efc014114c42e844f905336",
				"Assembly Version": "3.14.2.11",
			},
			expectedPackage: pkg.Package{
				Name:    "Active Directory Authentication Library",
				Version: "3.14.40721.0918",
				Metadata: pkg.DotnetPortableExecutableEntry{
					AssemblyVersion: "3.14.2.11",
					LegalCopyright:  "Copyright (c) Microsoft Corporation. All rights reserved.",
					InternalName:    "Microsoft.IdentityModel.Clients.ActiveDirectory.Platform.dll",
					CompanyName:     "Microsoft Corporation",
					ProductName:     "Active Directory Authentication Library",
					ProductVersion:  "c61f043686a544863efc014114c42e844f905336",
				},
			},
		},
		{
			// show we can do a best effort to make a package from bad data
			name: "dotnet package with malformed field and extended version",
			versionResources: map[string]string{
				"CompanyName":      "Microsoft Corporation",
				"FileDescription":  "äbFile\xa0\xa1Versi on",
				"FileVersion":      "4.6.25512.01 built by: dlab-DDVSOWINAGE016. Commit Hash: d0d5c7b49271cadb6d97de26d8e623e98abdc8db",
				"InternalName":     "äbFileVersion",
				"LegalCopyright":   "© Microsoft Corporation.  All rights reserved.",
				"OriginalFilename": "TProductName",
				"ProductName":      "Microsoft® .NET Framework",
				"ProductVersion":   "4.6.25512.01 built by: dlab-DDVSOWINAGE016. Commit Hash: d0d5c7b49271cadb6d97de26d8e623e98abdc8db",
			},
			expectedPackage: pkg.Package{
				Name:    "äbFileVersi on",
				Version: "4.6.25512.01",
				PURL:    "pkg:nuget/%C3%A4bFileVersi%20on@4.6.25512.01",
				Metadata: pkg.DotnetPortableExecutableEntry{
					LegalCopyright: "© Microsoft Corporation.  All rights reserved.",
					InternalName:   "äb\x01FileVersion",
					CompanyName:    "Microsoft Corporation",
					ProductName:    "Microsoft® .NET Framework",
					ProductVersion: "4.6.25512.01 built by: dlab-DDVSOWINAGE016. Commit Hash: d0d5c7b49271cadb6d97de26d8e623e98abdc8db",
				},
			},
		},
		{
			name: "System.Data.Linq.dll",
			versionResources: map[string]string{
				"CompanyName":      "Microsoft Corporation",
				"FileDescription":  "System.Data.Linq.dll",
				"FileVersion":      "4.7.3190.0 built by: NET472REL1LAST_C",
				"InternalName":     "System.Data.Linq.dll",
				"LegalCopyright":   "© Microsoft Corporation.  All rights reserved.",
				"OriginalFilename": "System.Data.Linq.dll",
				"ProductName":      "Microsoft® .NET Framework",
				"ProductVersion":   "4.7.3190.0",
			},
			expectedPackage: pkg.Package{
				Name:    "System.Data.Linq.dll",
				Version: "4.7.3190.0",
			},
		},
		{
			name: "curl",
			versionResources: map[string]string{
				"CompanyName":      "curl, https://curl.se/",
				"FileDescription":  "The curl executable",
				"FileVersion":      "8.4.0",
				"InternalName":     "curl",
				"LegalCopyright":   "© Daniel Stenberg, <daniel@haxx.se>.",
				"OriginalFilename": "curl.exe",
				"ProductName":      "The curl executable",
				"ProductVersion":   "8.4.0",
			},
			expectedPackage: pkg.Package{
				Name:    "The curl executable",
				Version: "8.4.0",
			},
		},
		{
			name: "Prometheus",
			versionResources: map[string]string{
				"AssemblyVersion":  "8.0.0.0",
				"CompanyName":      "",
				"FileDescription":  "",
				"FileVersion":      "8.0.1",
				"InternalName":     "Prometheus.AspNetCore.dll",
				"OriginalFilename": "Prometheus.AspNetCore.dll",
				"ProductName":      "",
				"ProductVersion":   "8.0.1",
			},
			expectedPackage: pkg.Package{
				Name:    "Prometheus.AspNetCore.dll",
				Version: "8.0.1",
			},
		},
		{
			name: "Hidden Input",
			versionResources: map[string]string{
				"FileDescription":  "Reads from stdin without leaking info to the terminal and outputs back to stdout",
				"FileVersion":      "1, 0, 0, 0",
				"InternalName":     "hiddeninput",
				"LegalCopyright":   "Jordi Boggiano - 2012",
				"OriginalFilename": "hiddeninput.exe",
				"ProductName":      "Hidden Input",
				"ProductVersion":   "1, 0, 0, 0",
			},
			expectedPackage: pkg.Package{
				Name:    "Hidden Input",
				Version: "1, 0, 0, 0",
			},
		},
		{
			name: "SQLite3",
			versionResources: map[string]string{
				"CompanyName":     "SQLite Development Team",
				"FileDescription": "SQLite is a software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine.",
				"FileVersion":     "3.23.2",
				"InternalName":    "sqlite3",
				"LegalCopyright":  "http://www.sqlite.org/copyright.html",
				"ProductName":     "SQLite",
				"ProductVersion":  "3.23.2",
			},
			expectedPackage: pkg.Package{
				Name:    "SQLite",
				Version: "3.23.2",
			},
		},
		{
			name: "Brave Browser",
			versionResources: map[string]string{
				"CompanyName":      "Brave Software, Inc.",
				"FileDescription":  "Brave Browser",
				"FileVersion":      "80.1.7.92",
				"InternalName":     "chrome_exe",
				"LegalCopyright":   "Copyright 2016 The Brave Authors. All rights reserved.",
				"OriginalFilename": "chrome.exe",
				"ProductName":      "Brave Browser",
				"ProductVersion":   "80.1.7.92",
			},
			expectedPackage: pkg.Package{
				Name:    "Brave Browser",
				Version: "80.1.7.92",
			},
		},
		{
			name: "Better product version",
			versionResources: map[string]string{
				"FileDescription": "Better version",
				"FileVersion":     "80.1.7",
				"ProductVersion":  "80.1.7.92",
			},
			expectedPackage: pkg.Package{
				Name:    "Better version",
				Version: "80.1.7.92",
			},
		},
		{
			name: "Better file version",
			versionResources: map[string]string{
				"FileDescription": "Better version",
				"FileVersion":     "80.1.7.92",
				"ProductVersion":  "80.1.7",
			},
			expectedPackage: pkg.Package{
				Name:    "Better version",
				Version: "80.1.7.92",
			},
		},
		{
			name: "Higher semantic version Product Version",
			versionResources: map[string]string{
				"FileDescription": "Higher semantic version Product Version",
				"FileVersion":     "3.0.0.0",
				"ProductVersion":  "3.0.1+b86b61bf676163639795b163d8d753b20aad6207",
			},
			expectedPackage: pkg.Package{
				Name:    "Higher semantic version Product Version",
				Version: "3.0.1+b86b61bf676163639795b163d8d753b20aad6207",
			},
		},
		{
			name: "Higher semantic version File Version",
			versionResources: map[string]string{
				"FileDescription": "Higher semantic version File Version",
				"FileVersion":     "3.0.1+b86b61bf676163639795b163d8d753b20aad6207",
				"ProductVersion":  "3.0.0",
			},
			expectedPackage: pkg.Package{
				Name:    "Higher semantic version File Version",
				Version: "3.0.1+b86b61bf676163639795b163d8d753b20aad6207",
			},
		},
		{
			name: "Invalid semantic version File Version",
			versionResources: map[string]string{
				"FileDescription": "Invalid semantic version File Version",
				"FileVersion":     "A",
				"ProductVersion":  "3.0.1+b86b61bf676163639795b163d8d753b20aad6207",
			},
			expectedPackage: pkg.Package{
				Name:    "Invalid semantic version File Version",
				Version: "3.0.1+b86b61bf676163639795b163d8d753b20aad6207",
			},
		},
		{
			name: "Invalid semantic version File Version",
			versionResources: map[string]string{
				"FileDescription": "Invalid semantic version File Version",
				"FileVersion":     "A",
				"ProductVersion":  "3.0.1+b86b61bf676163639795b163d8d753b20aad6207",
			},
			expectedPackage: pkg.Package{
				Name:    "Invalid semantic version File Version",
				Version: "3.0.1+b86b61bf676163639795b163d8d753b20aad6207",
			},
		},
		{
			name: "Invalid semantic version Product Version",
			versionResources: map[string]string{
				"FileDescription": "Invalid semantic version Product Version",
				"FileVersion":     "3.0.1+b86b61bf676163639795b163d8d753b20aad6207",
				"ProductVersion":  "A",
			},
			expectedPackage: pkg.Package{
				Name:    "Invalid semantic version Product Version",
				Version: "3.0.1+b86b61bf676163639795b163d8d753b20aad6207",
			},
		},
		{
			name: "Semantically equal falls through, chooses File Version with more components",
			versionResources: map[string]string{
				"FileDescription": "Semantically equal falls through, chooses File Version with more components",
				"FileVersion":     "3.0.0.0",
				"ProductVersion":  "3.0.0",
			},
			expectedPackage: pkg.Package{
				Name:    "Semantically equal falls through, chooses File Version with more components",
				Version: "3.0.0.0",
			},
		},
	}

	for _, tc := range tests {
		t.Run(tc.name, func(t *testing.T) {
			location := file.NewLocation("")
			got := newDotnetBinaryPackage(tc.versionResources, location)

			// ignore certain metadata
			if tc.expectedPackage.Metadata == nil {
				got.Metadata = nil
			}
			// set known defaults
			if tc.expectedPackage.Type == "" {
				tc.expectedPackage.Type = pkg.DotnetPkg
			}
			if tc.expectedPackage.Language == "" {
				tc.expectedPackage.Language = pkg.Dotnet
			}
			if tc.expectedPackage.PURL == "" {
				tc.expectedPackage.PURL = binaryPackageURL(tc.expectedPackage.Name, tc.expectedPackage.Version)
			}
			tc.expectedPackage.Locations = file.NewLocationSet(location.WithAnnotation(pkg.EvidenceAnnotationKey, pkg.PrimaryEvidenceAnnotation))

			pkgtest.AssertPackagesEqual(t, tc.expectedPackage, got)
		})
	}
}

func Test_extractVersion(t *testing.T) {
	tests := []struct {
		input    string
		expected string
	}{
		{
			input:    "1, 0, 0, 0",
			expected: "1, 0, 0, 0",
		},
		{
			input:    "Release 73",
			expected: "Release 73",
		},
		{
			input:    "4.7.4076.0 built by: NET472REL1LAST_B",
			expected: "4.7.4076.0",
		},
	}

	for _, test := range tests {
		t.Run(test.input, func(t *testing.T) {
			got := extractVersionFromResourcesValue(test.input)
			assert.Equal(t, test.expected, got)
		})
	}
}

func Test_spaceNormalize(t *testing.T) {
	tests := []struct {
		input    string
		expected string
	}{
		{
			expected: "some spaces apart",
			input:    " some 	spaces\n\t\t \n\rapart\n",
		},
		{
			expected: "söme ¡nvalid characters",
			input:    "\rsöme \u0001¡nvalid\t characters\n",
		},
	}

	for _, test := range tests {
		t.Run(test.expected, func(t *testing.T) {
			got := spaceNormalize(test.input)
			assert.Equal(t, test.expected, got)
		})
	}
}

func TestRuntimeCPEs(t *testing.T) {
	tests := []struct {
		name     string
		version  string
		expected []cpe.CPE
	}{
		{
			name:    ".NET Core 1.0",
			version: "1.0",
			expected: []cpe.CPE{
				{
					Attributes: cpe.Attributes{
						Part:    "a",
						Vendor:  "microsoft",
						Product: "dotnet_core",
						Version: "1.0",
					},
					Source: cpe.DeclaredSource,
				},
			},
		},
		{
			name:    ".NET Core 2.1",
			version: "2.1",
			expected: []cpe.CPE{
				{
					Attributes: cpe.Attributes{
						Part:    "a",
						Vendor:  "microsoft",
						Product: "dotnet_core",
						Version: "2.1",
					},
					Source: cpe.DeclaredSource,
				},
			},
		},
		{
			name:    ".NET Core 3.1",
			version: "3.1",
			expected: []cpe.CPE{
				{
					Attributes: cpe.Attributes{
						Part:    "a",
						Vendor:  "microsoft",
						Product: "dotnet_core",
						Version: "3.1",
					},
					Source: cpe.DeclaredSource,
				},
			},
		},
		{
			name:    ".NET Core 4.9 (hypothetical)",
			version: "4.9",
			expected: []cpe.CPE{
				{
					Attributes: cpe.Attributes{
						Part:    "a",
						Vendor:  "microsoft",
						Product: "dotnet_core",
						Version: "4.9",
					},
					Source: cpe.DeclaredSource,
				},
			},
		},
		{
			name:    ".NET 5.0",
			version: "5.0",
			expected: []cpe.CPE{
				{
					Attributes: cpe.Attributes{
						Part:    "a",
						Vendor:  "microsoft",
						Product: "dotnet",
						Version: "5.0",
					},
					Source: cpe.DeclaredSource,
				},
			},
		},
		{
			name:    ".NET 6.0",
			version: "6.0",
			expected: []cpe.CPE{
				{
					Attributes: cpe.Attributes{
						Part:    "a",
						Vendor:  "microsoft",
						Product: "dotnet",
						Version: "6.0",
					},
					Source: cpe.DeclaredSource,
				},
			},
		},
		{
			name:    ".NET 8.0",
			version: "8.0",
			expected: []cpe.CPE{
				{
					Attributes: cpe.Attributes{
						Part:    "a",
						Vendor:  "microsoft",
						Product: "dotnet",
						Version: "8.0",
					},
					Source: cpe.DeclaredSource,
				},
			},
		},
		{
			name:    ".NET 10.0 (future version)",
			version: "10.0",
			expected: []cpe.CPE{
				{
					Attributes: cpe.Attributes{
						Part:    "a",
						Vendor:  "microsoft",
						Product: "dotnet",
						Version: "10.0",
					},
					Source: cpe.DeclaredSource,
				},
			},
		},
		{
			name:    "Patch version should not be included",
			version: "6.0.21",
			expected: []cpe.CPE{
				{
					Attributes: cpe.Attributes{
						Part:    "a",
						Vendor:  "microsoft",
						Product: "dotnet",
						Version: "6.0",
					},
					Source: cpe.DeclaredSource,
				},
			},
		},
		{
			name:    "Assumed minor version",
			version: "6",
			expected: []cpe.CPE{
				{
					Attributes: cpe.Attributes{
						Part:    "a",
						Vendor:  "microsoft",
						Product: "dotnet",
						Version: "6.0",
					},
					Source: cpe.DeclaredSource,
				},
			},
		},
		{
			name:     "Invalid version format",
			version:  "invalid",
			expected: nil,
		},
		{
			name:     "Empty version",
			version:  "",
			expected: nil,
		},
	}

	for _, tc := range tests {
		t.Run(tc.name, func(t *testing.T) {
			result := runtimeCPEs(tc.version)

			if !reflect.DeepEqual(result, tc.expected) {
				t.Errorf("runtimeCPEs(%q) = %+v; want %+v",
					tc.version, result, tc.expected)
			}
		})
	}
}
