Add new paths to redirect for the configuration file (#285)

* Add paths to redirect to the URL for a config file

* Add the link to redirect in UI

* Fix quick-start doc

docs/concepts/deploy.yml.md

@@ -1,10 +1,12 @@
 # deploy.yml
 
-Gitploy configures a pipeline with a simple, easy‑to‑read file that you commit to your git repository. *The configuration file must be at the head of the default branch.* The default path is `deploy.yml` at the root directory, but you can replace the file path in the settings tab of Gitploy. You can check the [documentation](../references/deploy.yml.md) for the specification of the configuration file and also references [Use Cases](../tasks/usecases.md).
+Gitploy configures a pipeline with a simple, easy‑to‑read file that you commit to your git repository. The default path is `deploy.yml` at the root directory, but you can replace the file path in the settings tab of Gitploy. You can check the [documentation](../references/deploy.yml.md) for the specification of the configuration file and also references [Use Cases](../tasks/usecases.md). 
+
+*⚠️ Note that the configuration file must be at the head of the default branch.* 
 
 ## Quick Start
 
-If you want to get started quickly, you should copy the `deploy.yml` file and push it into your git repository. Then you can find the environment in the Gitploy.
+If you want to get started quickly, you should click the *New Configuration* link, copy the `deploy.yml` file, and push it into your git repository. Then you can find the `production` environment in Gitploy.
 
 ```yaml
 # deploy.yml
@@ -15,6 +17,10 @@ envs:
     # required_context: []
 ```
 
+Figure) New Configuration Link
+
+![Quick Start](../images/quickstart.png)
+
 ## Features
 ### Multi Environment
 

internal/interactor/interface.go

@@ -96,6 +96,9 @@ type (
 
 		ListRemoteRepos(ctx context.Context, u *ent.User) ([]*extent.RemoteRepo, error)
 
+		GetConfigRedirectURL(ctx context.Context, u *ent.User, r *ent.Repo) (string, error)
+		GetNewConfigRedirectURL(ctx context.Context, u *ent.User, r *ent.Repo) (string, error)
+
 		// SCM returns the deployment with UID and SHA.
 		CreateRemoteDeployment(ctx context.Context, u *ent.User, r *ent.Repo, d *ent.Deployment, e *extent.Env) (*extent.RemoteDeployment, error)
 		CancelDeployment(ctx context.Context, u *ent.User, r *ent.Repo, d *ent.Deployment, s *ent.DeploymentStatus) error

internal/pkg/github/link.go

@@ -0,0 +1,46 @@
+package github
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+
+	"github.com/gitploy-io/gitploy/model/ent"
+	"github.com/gitploy-io/gitploy/pkg/e"
+)
+
+func (g *Github) GetConfigRedirectURL(ctx context.Context, u *ent.User, r *ent.Repo) (string, error) {
+	remote, res, err := g.Client(ctx, u.Token).
+		Repositories.
+		Get(ctx, r.Namespace, r.Name)
+	if res.StatusCode == http.StatusForbidden {
+		return "", e.NewError(e.ErrorPermissionRequired, err)
+	} else if res.StatusCode == http.StatusNotFound {
+		return "", e.NewError(e.ErrorCodeEntityNotFound, err)
+	} else if err != nil {
+		return "", e.NewError(e.ErrorCodeInternalError, err)
+	}
+
+	// The latest version file on the main branch.
+	// https://docs.github.com/en/repositories/working-with-files/using-files/getting-permanent-links-to-files
+	url := fmt.Sprintf("%s/blob/%s/%s", *remote.HTMLURL, *remote.DefaultBranch, r.ConfigPath)
+	return url, nil
+}
+
+func (g *Github) GetNewConfigRedirectURL(ctx context.Context, u *ent.User, r *ent.Repo) (string, error) {
+	remote, res, err := g.Client(ctx, u.Token).
+		Repositories.
+		Get(ctx, r.Namespace, r.Name)
+	if res.StatusCode == http.StatusForbidden {
+		return "", e.NewError(e.ErrorPermissionRequired, err)
+	} else if res.StatusCode == http.StatusNotFound {
+		return "", e.NewError(e.ErrorCodeEntityNotFound, err)
+	} else if err != nil {
+		return "", e.NewError(e.ErrorCodeInternalError, err)
+	}
+
+	// Redirect to the URL to create a configuration file.
+	// https://docs.github.com/en/enterprise-server@3.0/repositories/working-with-files/managing-files/creating-new-files
+	url := fmt.Sprintf("%s/new/%s/%s", *remote.HTMLURL, *remote.DefaultBranch, r.ConfigPath)
+	return url, nil
+}

internal/pkg/github/link_test.go

@@ -0,0 +1,70 @@
+package github
+
+import (
+	"context"
+	"reflect"
+	"testing"
+
+	"github.com/gitploy-io/gitploy/model/ent"
+	"gopkg.in/h2non/gock.v1"
+)
+
+func TestGithub_GetConfigRedirectURL(t *testing.T) {
+	t.Run("Return the link of the configuration file.", func(t *testing.T) {
+		t.Log("Mocking the GET repo API.")
+		gock.New("https://api.github.com").
+			Get("/repos/octocat/hello-world").
+			Reply(200).
+			File("./testdata/repo.get.json")
+
+		g := NewGithub(&GithubConfig{})
+
+		link, err := g.GetConfigRedirectURL(
+			context.Background(),
+			&ent.User{},
+			&ent.Repo{
+				Namespace:  "octocat",
+				Name:       "hello-world",
+				ConfigPath: "config.yml",
+			},
+		)
+		if err != nil {
+			t.Fatalf("GetConfigRedirectURL returns an error: %s", err)
+		}
+
+		want := "https://github.com/octocat/Hello-World/blob/master/config.yml"
+		if !reflect.DeepEqual(link, want) {
+			t.Fatalf("GetConfigRedirectURL = %v, wanted %v", link, want)
+		}
+	})
+}
+
+func TestGithub_GetNewConfigRedirectURL(t *testing.T) {
+	t.Run("Return the link of the configuration file.", func(t *testing.T) {
+		t.Log("Mocking the GET repo API.")
+		gock.New("https://api.github.com").
+			Get("/repos/octocat/hello-world").
+			Reply(200).
+			File("./testdata/repo.get.json")
+
+		g := NewGithub(&GithubConfig{})
+
+		link, err := g.GetNewConfigRedirectURL(
+			context.Background(),
+			&ent.User{},
+			&ent.Repo{
+				Namespace:  "octocat",
+				Name:       "hello-world",
+				ConfigPath: "config.yml",
+			},
+		)
+		if err != nil {
+			t.Fatalf("GetNewConfigRedirectURL returns an error: %s", err)
+		}
+
+		want := "https://github.com/octocat/Hello-World/new/master/config.yml"
+		if !reflect.DeepEqual(link, want) {
+			t.Fatalf("GetNewConfigRedirectURL = %v, wanted %v", link, want)
+		}
+	})
+}