Create data source for github app

github/data_source_github_app.go

@@ -0,0 +1,52 @@
+package github
+
+import (
+	"context"
+	"strconv"
+
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
+)
+
+func dataSourceGithubApp() *schema.Resource {
+	return &schema.Resource{
+		Read: dataSourceGithubAppRead,
+
+		Schema: map[string]*schema.Schema{
+			"slug": {
+				Type:     schema.TypeString,
+				Required: true,
+			},
+			"description": {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
+			"name": {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
+			"node_id": {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
+		},
+	}
+}
+
+func dataSourceGithubAppRead(d *schema.ResourceData, meta interface{}) error {
+	slug := d.Get("slug").(string)
+
+	client := meta.(*Owner).v3client
+	ctx := context.Background()
+
+	app, _, err := client.Apps.Get(ctx, slug)
+	if err != nil {
+		return err
+	}
+
+	d.SetId(strconv.FormatInt(app.GetID(), 10))
+	d.Set("description", app.GetDescription())
+	d.Set("name", app.GetName())
+	d.Set("node_id", app.GetNodeID())
+
+	return nil
+}

github/provider.go

@@ -138,6 +138,7 @@ func Provider() terraform.ResourceProvider {
 			"github_actions_organization_secrets":    dataSourceGithubActionsOrganizationSecrets(),
 			"github_actions_public_key":              dataSourceGithubActionsPublicKey(),
 			"github_actions_secrets":                 dataSourceGithubActionsSecrets(),
+			"github_app":                             dataSourceGithubApp(),
 			"github_branch":                          dataSourceGithubBranch(),
 			"github_collaborators":                   dataSourceGithubCollaborators(),
 			"github_dependabot_organization_secrets": dataSourceGithubDependabotOrganizationSecrets(),

website/docs/d/app.markdown

@@ -0,0 +1,35 @@
+---
+layout: "github"
+page_title: "GitHub: github_app"
+description: |-
+  Get information about an app.
+---
+
+# github\_app
+
+Use this data source to retrieve information about an app.
+
+## Example Usage
+
+```hcl
+data "github_app" "foobar" {
+  slug = "foobar"
+}
+```
+
+## Argument Reference
+
+The following arguments are supported:
+
+* `slug` - (Required) The URL-friendly name of your GitHub App.
+
+
+## Attribute Reference
+
+The following additional attributes are exported:
+
+* `description` - The app's description.
+
+* `name` - The app's full name.
+
+* `node_id` - The Node ID of the app.

website/github.erb

@@ -22,6 +22,9 @@
             <li>
               <a href="/docs/providers/github/d/actions_secrets.html">actions_secrets</a>
             </li>
+            <li>
+              <a href="/docs/providers/github/d/app.html"></a>
+            </li>
             <li>
               <a href="/docs/providers/github/d/branch.html">github_branch</a>
             </li>