/*
   Copyright 2014 CoreOS, Inc.

   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 initialize

import (
	"reflect"
	"testing"

	"github.com/coreos/coreos-cloudinit/config"
)

func TestParseMetadata(t *testing.T) {
	for i, tt := range []struct {
		in   string
		want *config.CloudConfig
		err  bool
	}{
		{"", nil, false},
		{`garbage, invalid json`, nil, true},
		{`{"foo": "bar"}`, &config.CloudConfig{}, false},
		{`{"network_config": {"content_path": "asdf"}}`, &config.CloudConfig{NetworkConfigPath: "asdf"}, false},
		{`{"hostname": "turkleton"}`, &config.CloudConfig{Hostname: "turkleton"}, false},
		{`{"public_keys": {"jack": "jill", "bob": "alice"}}`, &config.CloudConfig{SSHAuthorizedKeys: []string{"alice", "jill"}}, false},
		{`{"unknown": "thing", "hostname": "my_host", "public_keys": {"do": "re", "mi": "fa"}, "network_config": {"content_path": "/root", "blah": "zzz"}}`, &config.CloudConfig{SSHAuthorizedKeys: []string{"re", "fa"}, Hostname: "my_host", NetworkConfigPath: "/root"}, false},
	} {
		got, err := ParseMetaData(tt.in)
		if tt.err != (err != nil) {
			t.Errorf("case #%d: bad error state: got %t, want %t (err=%v)", i, (err != nil), tt.err, err)
		}
		if got == nil {
			if tt.want != nil {
				t.Errorf("case #%d: unexpected nil output", i)
			}
		} else if tt.want == nil {
			t.Errorf("case #%d: unexpected non-nil output", i)
		} else {
			if !reflect.DeepEqual(*got, *tt.want) {
				t.Errorf("case #%d: bad output:\ngot\n%v\nwant\n%v", i, *got, *tt.want)
			}
		}
	}

}

func TestExtractIPsFromMetadata(t *testing.T) {
	for i, tt := range []struct {
		in  []byte
		err bool
		out map[string]string
	}{
		{
			[]byte(`{"public-ipv4": "12.34.56.78", "local-ipv4": "1.2.3.4", "public-ipv6": "1234::", "local-ipv6": "5678::"}`),
			false,
			map[string]string{"$public_ipv4": "12.34.56.78", "$private_ipv4": "1.2.3.4", "$public_ipv6": "1234::", "$private_ipv6": "5678::"},
		},
		{
			[]byte(`{"local-ipv4": "127.0.0.1", "something_else": "don't care"}`),
			false,
			map[string]string{"$private_ipv4": "127.0.0.1"},
		},
		{
			[]byte(`garbage`),
			true,
			nil,
		},
	} {
		got, err := ExtractIPsFromMetadata(tt.in)
		if (err != nil) != tt.err {
			t.Errorf("bad error state (got %t, want %t)", err != nil, tt.err)
		}
		if !reflect.DeepEqual(got, tt.out) {
			t.Errorf("case %d: got %s, want %s", i, got, tt.out)
		}
	}
}