package imageproxy

import (
	"bufio"
	"net/http"
	"net/url"
	"strings"
	"testing"
)

func TestAllowed(t *testing.T) {
	p := &Proxy{
		Whitelist: []string{"a.test", "*.b.test", "*c.test"},
	}

	tests := []struct {
		url     string
		allowed bool
	}{
		{"http://a.test/image", true},
		{"http://x.a.test/image", false},

		{"http://b.test/image", true},
		{"http://x.b.test/image", true},
		{"http://x.y.b.test/image", true},

		{"http://c.test/image", false},
		{"http://xc.test/image", false},
		{"/image", false},
	}

	for _, tt := range tests {
		u, err := url.Parse(tt.url)
		if err != nil {
			t.Errorf("error parsing url %q: %v", tt.url, err)
		}
		if got, want := p.allowed(u), tt.allowed; got != want {
			t.Errorf("allowed(%q) returned %v, want %v", u, got, want)
		}
	}
}

func TestCheck304(t *testing.T) {
	tests := []struct {
		req, resp string
		is304     bool
	}{
		{ // etag match
			"GET / HTTP/1.1\nIf-None-Match: \"v\"\n\n",
			"HTTP/1.1 200 OK\nEtag: \"v\"\n\n",
			true,
		},
		{ // last-modified match
			"GET / HTTP/1.1\nIf-Modified-Since: Sun, 02 Jan 2000 00:00:00 GMT\n\n",
			"HTTP/1.1 200 OK\nLast-Modified: Sat, 01 Jan 2000 00:00:00 GMT\n\n",
			true,
		},

		// mismatches
		{
			"GET / HTTP/1.1\n\n",
			"HTTP/1.1 200 OK\n\n",
			false,
		},
		{
			"GET / HTTP/1.1\n\n",
			"HTTP/1.1 200 OK\nEtag: \"v\"\n\n",
			false,
		},
		{
			"GET / HTTP/1.1\nIf-None-Match: \"v\"\n\n",
			"HTTP/1.1 200 OK\n\n",
			false,
		},
		{
			"GET / HTTP/1.1\nIf-None-Match: \"a\"\n\n",
			"HTTP/1.1 200 OK\nEtag: \"b\"\n\n",
			false,
		},
		{ // last-modified match
			"GET / HTTP/1.1\n\n",
			"HTTP/1.1 200 OK\nLast-Modified: Sat, 01 Jan 2000 00:00:00 GMT\n\n",
			false,
		},
		{ // last-modified match
			"GET / HTTP/1.1\nIf-Modified-Since: Sun, 02 Jan 2000 00:00:00 GMT\n\n",
			"HTTP/1.1 200 OK\n\n",
			false,
		},
		{ // last-modified match
			"GET / HTTP/1.1\nIf-Modified-Since: Fri, 31 Dec 1999 00:00:00 GMT\n\n",
			"HTTP/1.1 200 OK\nLast-Modified: Sat, 01 Jan 2000 00:00:00 GMT\n\n",
			false,
		},
	}

	for _, tt := range tests {
		buf := bufio.NewReader(strings.NewReader(tt.req))
		req, err := http.ReadRequest(buf)
		if err != nil {
			t.Errorf("http.ReadRequest(%q) returned error: %v", tt.req, err)
		}

		buf = bufio.NewReader(strings.NewReader(tt.resp))
		resp, err := http.ReadResponse(buf, req)
		if err != nil {
			t.Errorf("http.ReadResponse(%q) returned error: %v", tt.resp, err)
		}

		if got, want := check304(req, resp), tt.is304; got != want {
			t.Errorf("check304(%q, %q) returned: %v, want %v", tt.req, tt.resp, got, want)
		}
	}
}