Changes for new version of esplora image (#62)

* changes for new version of esplora image

* add electrs port and esplora url env vars in compose yaml files

* wrap viper methods into Config type and use constants package

* add controller to interact with nigiri resources:
 * .env for docker-compose
 * docker daemon
 * json config file

* add use of constants and config packages and change start flag from --port to --env

* add package for global constants and variables

* add use of controller and constants packages instead of local methods and vars

* bump version

* use contants in logs command tests

cli/controller/parser_test.go

@@ -0,0 +1,159 @@
+package controller
+
+import (
+	"encoding/json"
+	"os"
+	"testing"
+
+	"github.com/vulpemventures/nigiri/cli/constants"
+)
+
+func TestParserParseNetwork(t *testing.T) {
+	p := &Parser{}
+
+	validNetworks := []string{"regtest"}
+	for _, n := range validNetworks {
+		err := p.parseNetwork(n)
+		if err != nil {
+			t.Fatal(err)
+		}
+	}
+}
+
+func TestParserParseDatadir(t *testing.T) {
+	p := &Parser{}
+
+	currentDir, _ := os.Getwd()
+	validDatadirs := []string{currentDir}
+	for _, n := range validDatadirs {
+		err := p.parseDatadir(n)
+		if err != nil {
+			t.Fatal(err)
+		}
+	}
+}
+
+func TestParserParseEnvJSON(t *testing.T) {
+	p := &Parser{}
+
+	for _, e := range testJSONs {
+		parsedJSON, _ := json.Marshal(e)
+		mergedJSON, err := p.parseEnvJSON(string(parsedJSON))
+		if err != nil {
+			t.Fatal(err)
+		}
+		t.Log(mergedJSON)
+	}
+}
+
+func TestParserParseNetworkShouldFail(t *testing.T) {
+	p := &Parser{}
+
+	invalidNetworks := []string{"simnet", "testnet"}
+	for _, n := range invalidNetworks {
+		err := p.parseNetwork(n)
+		if err == nil {
+			t.Fatalf("Should have been failed before")
+		}
+		if err != constants.ErrInvalidNetwork {
+			t.Fatalf("Got: %s, wanted: %s", err, constants.ErrInvalidNetwork)
+		}
+	}
+}
+
+func TestParserParseDatadirShouldFail(t *testing.T) {
+	p := &Parser{}
+
+	invalidDatadirs := []string{"."}
+	for _, d := range invalidDatadirs {
+		err := p.parseDatadir(d)
+		if err == nil {
+			t.Fatalf("Should have been failed before")
+		}
+		if err != constants.ErrInvalidDatadir {
+			t.Fatalf("Got: %s, wanted: %s", err, constants.ErrInvalidDatadir)
+		}
+	}
+}
+
+var testJSONs = []map[string]interface{}{
+	// only btc services
+	{
+		"urls": map[string]string{
+			"bitcoin_esplora": "https://blockstream.info/",
+		},
+		"ports": map[string]map[string]int{
+			"bitcoin": map[string]int{
+				"node":       1111,
+				"esplora":    2222,
+				"electrs":    3333,
+				"chopsticks": 4444,
+			},
+		},
+	},
+	// btc and liquid services
+	{
+		"urls": map[string]string{
+			"bitcoin_esplora": "https://blockstream.info/",
+			"liquid_esplora":  "http://blockstream.info/liquid",
+		},
+		"ports": map[string]map[string]int{
+			"bitcoin": map[string]int{
+				"node":       1111,
+				"esplora":    2222,
+				"electrs":    3333,
+				"chopsticks": 4444,
+			},
+			"liquid": map[string]int{
+				"node":       5555,
+				"esplora":    6666,
+				"electrs":    7777,
+				"chopsticks": 8888,
+			},
+		},
+	},
+	// incomplete examples:
+	// incomplete bitcoin services
+	{
+		"ports": map[string]map[string]int{
+			"bitcoin": map[string]int{
+				"esplora":    1111,
+				"electrs":    2222,
+				"chopsticks": 3333,
+			},
+		},
+		"urls": map[string]string{
+			"bitcoin_esplora": "http://test.com/api",
+		},
+	},
+	// bitcoin services ports and liquid service url
+	{
+		"ports": map[string]map[string]int{
+			"bitcoin": map[string]int{
+				"node":       1111,
+				"esplora":    2222,
+				"electrs":    3333,
+				"chopsticks": 4444,
+			},
+		},
+		"urls": map[string]string{
+			"liquid_esplora": "http://test.com/liquid/api",
+		},
+	},
+	// liquid services ports and bitcoin service url
+	{
+		"ports": map[string]map[string]int{
+			"liquid": map[string]int{
+				"node":       1111,
+				"esplora":    2222,
+				"electrs":    3333,
+				"chopsticks": 4444,
+			},
+		},
+		"urls": map[string]string{
+			"bitcoin_esplora": "http://test.com/api",
+		},
+	},
+	// empty config
+	{},
+}