/*
Copyright 2019 The Fission 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 utils

import (
	"bytes"
	"io"
	"os"
	"reflect"
	"testing"

	fv1 "github.com/fission/fission/pkg/apis/core/v1"
)

func TestIsURL(t *testing.T) {
	tests := []struct {
		name string
		url  string
		want bool
	}{
		{"http", "http://example.com", true},
		{"https", "https://example.com", true},
		{"file", "file://example.com", false},
		{"filename", "foobar.zip", false},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := IsURL(tt.url); got != tt.want {
				t.Errorf("IsURL() = %v, want %v", got, tt.want)
			}
		})
	}
}

func TestGetChecksum(t *testing.T) {
	tests := []struct {
		name    string
		src     io.Reader
		want    *fv1.Checksum
		wantErr bool
	}{
		{
			name: "string case",
			src:  bytes.NewReader([]byte("foobar hello world")),
			want: &fv1.Checksum{
				Type: "sha256",
				Sum:  "99936be1902361c29745aef68bd818f5f08246fc695e2d6e4cc474daf79fed32",
			},
			wantErr: false,
		},
		{
			name:    "empty reader",
			src:     nil,
			want:    nil,
			wantErr: true,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, err := GetChecksum(tt.src)
			if (err != nil) != tt.wantErr {
				t.Errorf("GetChecksum() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			if !reflect.DeepEqual(got, tt.want) {
				t.Errorf("GetChecksum() got = %v, want %v", got, tt.want)
			}
		})
	}
}

func TestGetStringValueFromEnv(t *testing.T) {
	varName := "TEST_VAR"
	tests := []struct {
		name    string
		value   string
		want    string
		wantErr bool
	}{
		{
			name:    "empty string case",
			value:   "",
			want:    "",
			wantErr: true,
		},
		{
			name:    "string case",
			value:   "test string",
			want:    "test string",
			wantErr: false,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			os.Setenv(varName, tt.value)
			got, err := GetStringValueFromEnv(varName)
			if (err != nil) != tt.wantErr {
				t.Errorf("GetStringValueFromEnv() error = %v, wantErr %v, got %s", err, tt.wantErr, got)
				return
			}
		})
	}

}

func TestGetUIntValueFromEnv(t *testing.T) {
	varName := "TEST_VAR"
	tests := []struct {
		name    string
		value   string
		want    uint
		wantErr bool
	}{
		{
			name:    "empty string case",
			value:   "",
			want:    0,
			wantErr: true,
		},
		{
			name:    "string case",
			value:   "test string",
			want:    0,
			wantErr: true,
		},
		{
			name:    "not uint case",
			value:   "-100",
			want:    0,
			wantErr: true,
		},
		{
			name:    "uint case",
			value:   "7",
			want:    7,
			wantErr: false,
		}}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			os.Setenv(varName, tt.value)
			got, err := GetUIntValueFromEnv(varName)
			if (err != nil) != tt.wantErr {
				t.Errorf("GetUIntValueFromEnv() error = %v, wantErr %v, got %d", err, tt.wantErr, got)
				return
			}
		})
	}
}

func TestGetIntValueFromEnv(t *testing.T) {
	varName := "TEST_VAR"
	tests := []struct {
		name    string
		value   string
		want    int
		wantErr bool
	}{
		{
			name:    "empty string case",
			value:   "",
			want:    0,
			wantErr: true,
		},
		{
			name:    "string case",
			value:   "test string",
			want:    0,
			wantErr: true,
		},
		{
			name:    "not int case",
			value:   "-100",
			want:    -100,
			wantErr: false,
		},
		{
			name:    "int case",
			value:   "7",
			want:    7,
			wantErr: false,
		}}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			os.Setenv(varName, tt.value)
			got, err := GetIntValueFromEnv(varName)
			if (err != nil) != tt.wantErr {
				t.Errorf("GetIntValueFromEnv() error = %v, wantErr %v, got %d", err, tt.wantErr, got)
				return
			}
		})
	}
}