package daecommon

import (
	"isle/yamlutil"
	"testing"

	"github.com/stretchr/testify/assert"
	"gopkg.in/yaml.v3"
)

func TestConfig_UnmarshalYAML(t *testing.T) {
	tests := []struct {
		label      string
		str        string
		wantConfig Config
		wantErr    string
	}{
		{
			label:      "empty",
			str:        ``,
			wantConfig: Config{},
		},
		{
			label: "DEPRECATED single global network",
			str: `
				{"dns":{"resolvers":["a"]}}
			`,
			wantConfig: Config{
				Networks: map[string]NetworkConfig{
					DeprecatedNetworkID: NewNetworkConfig(func(c *NetworkConfig) {
						c.DNS.Resolvers = []string{"a"}
					}),
				},
			},
		},
		{
			label: "single network",
			str: `
				networks:
					foo: {"dns":{"resolvers":["a"]}}
			`,
			wantConfig: Config{
				Networks: map[string]NetworkConfig{
					"foo": NewNetworkConfig(func(c *NetworkConfig) {
						c.DNS.Resolvers = []string{"a"}
					}),
				},
			},
		},
		{
			label: "multiple networks",
			str: `
				networks:
					foo: {"dns":{"resolvers":["a"]}}
					bar: {}
			`,
			wantConfig: Config{
				Networks: map[string]NetworkConfig{
					"foo": NewNetworkConfig(func(c *NetworkConfig) {
						c.DNS.Resolvers = []string{"a"}
					}),
					"bar": NewNetworkConfig(nil),
				},
			},
		},
		{
			label: "err/shared vpn.public_addr port",
			str: `
				networks:
					foo: {"vpn":{"public_addr":"1.1.1.1:4001"}}
					bar: {"vpn":{"public_addr":"1.1.1.1:4000"}}
					baz: {"vpn":{"public_addr":"2.2.2.2:4000"}}
			`,
			wantErr: `two networks with the same vpn.public_addr port: "baz" and "bar"`,
		},
		{
			label: "err/invalid firewall",
			str: `
				networks:
					foo: {"vpn":{"firewall":{"inbound":[{"host":"f","port":"no"}]}}}
			`,
			wantErr: "port was not a number",
		},
	}

	for _, test := range tests {
		t.Run(test.label, func(t *testing.T) {
			test.str = yamlutil.ReplacePrefixTabs(test.str)
			var config Config
			err := yaml.Unmarshal([]byte(test.str), &config)
			if test.wantErr != "" {
				assert.ErrorContains(t, err, test.wantErr)
			} else {
				assert.NoError(t, err)
				assert.Equal(t, test.wantConfig, config)
			}
		})
	}
}