package ingress

import (
	"net/url"
	//"reflect"
	"regexp"
	"testing"

	"github.com/stretchr/testify/require"
)

//func Test_parseIngress(t *testing.T) {
//	localhost8000, err := url.Parse("https://localhost:8000")
//	require.NoError(t, err)
//	localhost8001, err := url.Parse("https://localhost:8001")
//	require.NoError(t, err)
//	type args struct {
//		rawYAML string
//	}
//	tests := []struct {
//		name    string
//		args    args
//		want    Ingress
//		wantErr bool
//	}{
//		{
//			name:    "Empty file",
//			args:    args{rawYAML: ""},
//			wantErr: true,
//		},
//		{
//			name: "Multiple rules",
//			args: args{rawYAML: `
//ingress:
//  - hostname: tunnel1.example.com
//    service: https://localhost:8000
//  - hostname: "*"
//    service: https://localhost:8001
//`},
//			want: Ingress{Rules: []Rule{
//				{
//					Hostname: "tunnel1.example.com",
//					Service:  localhost8000,
//				},
//				{
//					Hostname: "*",
//					Service:  localhost8001,
//				},
//			}},
//		},
//		{
//			name: "Extra keys",
//			args: args{rawYAML: `
//ingress:
//  - hostname: "*"
//    service: https://localhost:8000
//extraKey: extraValue
//`},
//			want: Ingress{Rules: []Rule{
//				{
//					Hostname: "*",
//					Service:  localhost8000,
//				},
//			}},
//		},
//		{
//			name: "Hostname can be omitted",
//			args: args{rawYAML: `
//ingress:
//  - service: https://localhost:8000
//`},
//			want: Ingress{Rules: []Rule{
//				{
//					Service: localhost8000,
//				},
//			}},
//		},
//		{
//			name: "Invalid service",
//			args: args{rawYAML: `
//ingress:
//  - hostname: "*"
//    service: https://local host:8000
//`},
//			wantErr: true,
//		},
//		{
//			name: "Invalid YAML",
//			args: args{rawYAML: `
//key: "value
//`},
//			wantErr: true,
//		},
//		{
//			name: "Last rule isn't catchall",
//			args: args{rawYAML: `
//ingress:
//  - hostname: example.com
//    service: https://localhost:8000
//`},
//			wantErr: true,
//		},
//		{
//			name: "First rule is catchall",
//			args: args{rawYAML: `
//ingress:
//  - service: https://localhost:8000
//  - hostname: example.com
//    service: https://localhost:8000
//`},
//			wantErr: true,
//		},
//		{
//			name: "Catch-all rule can't have a path",
//			args: args{rawYAML: `
//ingress:
//  - service: https://localhost:8001
//    path: /subpath1/(.*)/subpath2
//`},
//			wantErr: true,
//		},
//		{
//			name: "Invalid regex",
//			args: args{rawYAML: `
//ingress:
//  - hostname: example.com
//    service: https://localhost:8000
//    path: "*/subpath2"
//  - service: https://localhost:8001
//`},
//			wantErr: true,
//		},
//		{
//			name: "Service must have a scheme",
//			args: args{rawYAML: `
//ingress:
//  - service: localhost:8000
//`},
//			wantErr: true,
//		},
//		{
//			name: "Wildcard not at start",
//			args: args{rawYAML: `
//ingress:
//  - hostname: "test.*.example.com"
//    service: https://localhost:8000
//`},
//			wantErr: true,
//		},
//		{
//			name: "Can't use --url",
//			args: args{rawYAML: `
//url: localhost:8080
//ingress:
//  - hostname: "*.example.com"
//    service: https://localhost:8000
//`},
//			wantErr: true,
//		},
//		{
//			name: "Service can't have a path",
//			args: args{rawYAML: `
//ingress:
//  - service: https://localhost:8000/static/
//`},
//			wantErr: true,
//		},
//	}
//	for _, tt := range tests {
//		t.Run(tt.name, func(t *testing.T) {
//			got, err := ParseIngress([]byte(tt.args.rawYAML))
//			if (err != nil) != tt.wantErr {
//				t.Errorf("ParseIngress() error = %v, wantErr %v", err, tt.wantErr)
//				return
//			}
//			if !reflect.DeepEqual(got, tt.want) {
//				t.Errorf("ParseIngress() = %v, want %v", got, tt.want)
//			}
//		})
//	}
//}

func MustParse(t *testing.T, rawURL string) *url.URL {
	u, err := url.Parse(rawURL)
	require.NoError(t, err)
	return u
}

func Test_rule_matches(t *testing.T) {
	type fields struct {
		Hostname string
		Path     *regexp.Regexp
		Service  *url.URL
	}
	type args struct {
		requestURL *url.URL
	}
	tests := []struct {
		name   string
		fields fields
		args   args
		want   bool
	}{
		{
			name: "Just hostname, pass",
			fields: fields{
				Hostname: "example.com",
			},
			args: args{
				requestURL: MustParse(t, "https://example.com"),
			},
			want: true,
		},
		{
			name: "Entire hostname is wildcard, should match everything",
			fields: fields{
				Hostname: "*",
			},
			args: args{
				requestURL: MustParse(t, "https://example.com"),
			},
			want: true,
		},
		{
			name: "Just hostname, fail",
			fields: fields{
				Hostname: "example.com",
			},
			args: args{
				requestURL: MustParse(t, "https://foo.bar"),
			},
			want: false,
		},
		{
			name: "Just wildcard hostname, pass",
			fields: fields{
				Hostname: "*.example.com",
			},
			args: args{
				requestURL: MustParse(t, "https://adam.example.com"),
			},
			want: true,
		},
		{
			name: "Just wildcard hostname, fail",
			fields: fields{
				Hostname: "*.example.com",
			},
			args: args{
				requestURL: MustParse(t, "https://tunnel.com"),
			},
			want: false,
		},
		{
			name: "Just wildcard outside of subdomain in hostname, fail",
			fields: fields{
				Hostname: "*example.com",
			},
			args: args{
				requestURL: MustParse(t, "https://www.example.com"),
			},
			want: false,
		},
		{
			name: "Wildcard over multiple subdomains",
			fields: fields{
				Hostname: "*.example.com",
			},
			args: args{
				requestURL: MustParse(t, "https://adam.chalmers.example.com"),
			},
			want: true,
		},
		{
			name: "Hostname and path",
			fields: fields{
				Hostname: "*.example.com",
				Path:     regexp.MustCompile("/static/.*\\.html"),
			},
			args: args{
				requestURL: MustParse(t, "https://www.example.com/static/index.html"),
			},
			want: true,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			r := Rule{
				Hostname: tt.fields.Hostname,
				Path:     tt.fields.Path,
				Service:  tt.fields.Service,
			}
			u := tt.args.requestURL
			if got := r.Matches(u.Hostname(), u.Path); got != tt.want {
				t.Errorf("rule.matches() = %v, want %v", got, tt.want)
			}
		})
	}
}

//func BenchmarkFindMatch(b *testing.B) {
//	rulesYAML := `
//ingress:
//  - hostname: tunnel1.example.com
//    service: https://localhost:8000
//  - hostname: tunnel2.example.com
//    service: https://localhost:8001
//  - hostname: "*"
//    service: https://localhost:8002
//`
//	ing, err := ParseIngress([]byte(rulesYAML))
//	if err != nil {
//		b.Error(err)
//	}
//	for n := 0; n < b.N; n++ {
//		ing.FindMatchingRule("tunnel1.example.com", "")
//		ing.FindMatchingRule("tunnel2.example.com", "")
//		ing.FindMatchingRule("tunnel3.example.com", "")
//	}
//}