Put the Config in a new env package [#67]

I'd like to be able to make calls like NewUpgrade(cfg) rather than
Upgrade{...}.Prepare, but I wouldn't be able to define a NewUpgrade
function while Config is in the helm package; there would be a circular
import when Plan tried to import run.

cmd/drone-helm/main.go

@@ -5,11 +5,12 @@ import (
 	"os"
 
 	_ "github.com/joho/godotenv/autoload"
+	"github.com/pelotech/drone-helm3/internal/env"
 	"github.com/pelotech/drone-helm3/internal/helm"
 )
 
 func main() {
-	cfg, err := helm.NewConfig(os.Stdout, os.Stderr)
+	cfg, err := env.NewConfig(os.Stdout, os.Stderr)
 
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "%s\n", err.Error())

internal/env/config.go

@@ -1,4 +1,4 @@
-package helm
+package env
 
 import (
 	"fmt"

internal/env/config_test.go

@@ -1,4 +1,4 @@
-package helm
+package env
 
 import (
 	"fmt"

internal/helm/plan.go

@@ -2,6 +2,7 @@ package helm
 
 import (
 	"fmt"
+	"github.com/pelotech/drone-helm3/internal/env"
 	"github.com/pelotech/drone-helm3/internal/run"
 	"os"
 )
@@ -20,12 +21,12 @@ type Step interface {
 // A Plan is a series of steps to perform.
 type Plan struct {
 	steps  []Step
-	cfg    Config
+	cfg    env.Config
 	runCfg run.Config
 }
 
 // NewPlan makes a plan for running a helm operation.
-func NewPlan(cfg Config) (*Plan, error) {
+func NewPlan(cfg env.Config) (*Plan, error) {
 	p := Plan{
 		cfg: cfg,
 		runCfg: run.Config{
@@ -54,7 +55,7 @@ func NewPlan(cfg Config) (*Plan, error) {
 
 // determineSteps is primarily for the tests' convenience: it allows testing the "which stuff should
 // we do" logic without building a config that meets all the steps' requirements.
-func determineSteps(cfg Config) *func(Config) []Step {
+func determineSteps(cfg env.Config) *func(env.Config) []Step {
 	switch cfg.Command {
 	case "upgrade":
 		return &upgrade
@@ -91,7 +92,7 @@ func (p *Plan) Execute() error {
 	return nil
 }
 
-var upgrade = func(cfg Config) []Step {
+var upgrade = func(cfg env.Config) []Step {
 	steps := initKube(cfg)
 	steps = append(steps, addRepos(cfg)...)
 	if cfg.UpdateDependencies {
@@ -116,7 +117,7 @@ var upgrade = func(cfg Config) []Step {
 	return steps
 }
 
-var uninstall = func(cfg Config) []Step {
+var uninstall = func(cfg env.Config) []Step {
 	steps := initKube(cfg)
 	if cfg.UpdateDependencies {
 		steps = append(steps, depUpdate(cfg)...)
@@ -130,7 +131,7 @@ var uninstall = func(cfg Config) []Step {
 	return steps
 }
 
-var lint = func(cfg Config) []Step {
+var lint = func(cfg env.Config) []Step {
 	steps := addRepos(cfg)
 	if cfg.UpdateDependencies {
 		steps = append(steps, depUpdate(cfg)...)
@@ -146,14 +147,14 @@ var lint = func(cfg Config) []Step {
 	return steps
 }
 
-var help = func(cfg Config) []Step {
+var help = func(cfg env.Config) []Step {
 	help := &run.Help{
 		HelmCommand: cfg.Command,
 	}
 	return []Step{help}
 }
 
-func initKube(cfg Config) []Step {
+func initKube(cfg env.Config) []Step {
 	return []Step{
 		&run.InitKube{
 			SkipTLSVerify:  cfg.SkipTLSVerify,
@@ -167,7 +168,7 @@ func initKube(cfg Config) []Step {
 	}
 }
 
-func addRepos(cfg Config) []Step {
+func addRepos(cfg env.Config) []Step {
 	steps := make([]Step, 0)
 	for _, repo := range cfg.AddRepos {
 		steps = append(steps, &run.AddRepo{
@@ -178,7 +179,7 @@ func addRepos(cfg Config) []Step {
 	return steps
 }
 
-func depUpdate(cfg Config) []Step {
+func depUpdate(cfg env.Config) []Step {
 	return []Step{
 		&run.DepUpdate{
 			Chart: cfg.Chart,

internal/helm/plan_test.go

@@ -7,6 +7,7 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/pelotech/drone-helm3/internal/env"
 	"github.com/pelotech/drone-helm3/internal/run"
 )
 
@@ -25,14 +26,14 @@ func (suite *PlanTestSuite) TestNewPlan() {
 	stepTwo := NewMockStep(ctrl)
 
 	origHelp := help
-	help = func(cfg Config) []Step {
+	help = func(cfg env.Config) []Step {
 		return []Step{stepOne, stepTwo}
 	}
 	defer func() { help = origHelp }()
 
 	stdout := strings.Builder{}
 	stderr := strings.Builder{}
-	cfg := Config{
+	cfg := env.Config{
 		Command:   "help",
 		Debug:     false,
 		Namespace: "outer",
@@ -65,12 +66,12 @@ func (suite *PlanTestSuite) TestNewPlanAbortsOnError() {
 	stepTwo := NewMockStep(ctrl)
 
 	origHelp := help
-	help = func(cfg Config) []Step {
+	help = func(cfg env.Config) []Step {
 		return []Step{stepOne, stepTwo}
 	}
 	defer func() { help = origHelp }()
 
-	cfg := Config{
+	cfg := env.Config{
 		Command: "help",
 	}
 
@@ -129,7 +130,7 @@ func (suite *PlanTestSuite) TestExecuteAbortsOnError() {
 }
 
 func (suite *PlanTestSuite) TestUpgrade() {
-	cfg := Config{
+	cfg := env.Config{
 		ChartVersion:  "seventeen",
 		DryRun:        true,
 		Wait:          true,
@@ -172,7 +173,7 @@ func (suite *PlanTestSuite) TestUpgrade() {
 }
 
 func (suite *PlanTestSuite) TestUpgradeWithUpdateDependencies() {
-	cfg := Config{
+	cfg := env.Config{
 		UpdateDependencies: true,
 	}
 	steps := upgrade(cfg)
@@ -182,7 +183,7 @@ func (suite *PlanTestSuite) TestUpgradeWithUpdateDependencies() {
 }
 
 func (suite *PlanTestSuite) TestUpgradeWithAddRepos() {
-	cfg := Config{
+	cfg := env.Config{
 		AddRepos: []string{
 			"machine=https://github.com/harold_finch/themachine",
 		},
@@ -193,7 +194,7 @@ func (suite *PlanTestSuite) TestUpgradeWithAddRepos() {
 }
 
 func (suite *PlanTestSuite) TestUninstall() {
-	cfg := Config{
+	cfg := env.Config{
 		KubeToken:      "b2YgbXkgYWZmZWN0aW9u",
 		SkipTLSVerify:  true,
 		Certificate:    "cHJvY2xhaW1zIHdvbmRlcmZ1bCBmcmllbmRzaGlw",
@@ -233,7 +234,7 @@ func (suite *PlanTestSuite) TestUninstall() {
 }
 
 func (suite *PlanTestSuite) TestUninstallWithUpdateDependencies() {
-	cfg := Config{
+	cfg := env.Config{
 		UpdateDependencies: true,
 	}
 	steps := uninstall(cfg)
@@ -243,7 +244,7 @@ func (suite *PlanTestSuite) TestUninstallWithUpdateDependencies() {
 }
 
 func (suite *PlanTestSuite) TestInitKube() {
-	cfg := Config{
+	cfg := env.Config{
 		KubeToken:      "cXVlZXIgY2hhcmFjdGVyCg==",
 		SkipTLSVerify:  true,
 		Certificate:    "b2Ygd29rZW5lc3MK",
@@ -269,7 +270,7 @@ func (suite *PlanTestSuite) TestInitKube() {
 }
 
 func (suite *PlanTestSuite) TestDepUpdate() {
-	cfg := Config{
+	cfg := env.Config{
 		UpdateDependencies: true,
 		Chart:              "scatterplot",
 	}
@@ -286,7 +287,7 @@ func (suite *PlanTestSuite) TestDepUpdate() {
 }
 
 func (suite *PlanTestSuite) TestAddRepos() {
-	cfg := Config{
+	cfg := env.Config{
 		AddRepos: []string{
 			"first=https://add.repos/one",
 			"second=https://add.repos/two",
@@ -304,7 +305,7 @@ func (suite *PlanTestSuite) TestAddRepos() {
 }
 
 func (suite *PlanTestSuite) TestLint() {
-	cfg := Config{
+	cfg := env.Config{
 		Chart:        "./flow",
 		Values:       "steadfastness,forthrightness",
 		StringValues: "tensile_strength,flexibility",
@@ -326,7 +327,7 @@ func (suite *PlanTestSuite) TestLint() {
 }
 
 func (suite *PlanTestSuite) TestLintWithUpdateDependencies() {
-	cfg := Config{
+	cfg := env.Config{
 		UpdateDependencies: true,
 	}
 	steps := lint(cfg)
@@ -335,7 +336,7 @@ func (suite *PlanTestSuite) TestLintWithUpdateDependencies() {
 }
 
 func (suite *PlanTestSuite) TestLintWithAddRepos() {
-	cfg := Config{
+	cfg := env.Config{
 		AddRepos: []string{"friendczar=https://github.com/logan_pierce/friendczar"},
 	}
 	steps := lint(cfg)
@@ -344,7 +345,7 @@ func (suite *PlanTestSuite) TestLintWithAddRepos() {
 }
 
 func (suite *PlanTestSuite) TestDeterminePlanUpgradeCommand() {
-	cfg := Config{
+	cfg := env.Config{
 		Command: "upgrade",
 	}
 	stepsMaker := determineSteps(cfg)
@@ -352,7 +353,7 @@ func (suite *PlanTestSuite) TestDeterminePlanUpgradeCommand() {
 }
 
 func (suite *PlanTestSuite) TestDeterminePlanUpgradeFromDroneEvent() {
-	cfg := Config{}
+	cfg := env.Config{}
 
 	upgradeEvents := []string{"push", "tag", "deployment", "pull_request", "promote", "rollback"}
 	for _, event := range upgradeEvents {
@@ -363,7 +364,7 @@ func (suite *PlanTestSuite) TestDeterminePlanUpgradeFromDroneEvent() {
 }
 
 func (suite *PlanTestSuite) TestDeterminePlanUninstallCommand() {
-	cfg := Config{
+	cfg := env.Config{
 		Command: "uninstall",
 	}
 	stepsMaker := determineSteps(cfg)
@@ -372,7 +373,7 @@ func (suite *PlanTestSuite) TestDeterminePlanUninstallCommand() {
 
 // helm_command = delete is provided as an alias for backward-compatibility with drone-helm
 func (suite *PlanTestSuite) TestDeterminePlanDeleteCommand() {
-	cfg := Config{
+	cfg := env.Config{
 		Command: "delete",
 	}
 	stepsMaker := determineSteps(cfg)
@@ -380,7 +381,7 @@ func (suite *PlanTestSuite) TestDeterminePlanDeleteCommand() {
 }
 
 func (suite *PlanTestSuite) TestDeterminePlanDeleteFromDroneEvent() {
-	cfg := Config{
+	cfg := env.Config{
 		DroneEvent: "delete",
 	}
 	stepsMaker := determineSteps(cfg)
@@ -388,7 +389,7 @@ func (suite *PlanTestSuite) TestDeterminePlanDeleteFromDroneEvent() {
 }
 
 func (suite *PlanTestSuite) TestDeterminePlanLintCommand() {
-	cfg := Config{
+	cfg := env.Config{
 		Command: "lint",
 	}
 
@@ -397,7 +398,7 @@ func (suite *PlanTestSuite) TestDeterminePlanLintCommand() {
 }
 
 func (suite *PlanTestSuite) TestDeterminePlanHelpCommand() {
-	cfg := Config{
+	cfg := env.Config{
 		Command: "help",
 	}