feat: expose computed seat fields on github_copilot_organization_seat_assignment

Add created_at, pending_cancellation_date, last_activity_at,
last_activity_editor, and plan_type as computed attributes sourced
from GetSeatDetails. Useful for auditing seat usage.

Author: Nitin Jain

github/resource_github_copilot_organization_seat_assignment.go

@@ -28,6 +28,31 @@ func resourceGithubCopilotOrganizationSeatAssignment() *schema.Resource {
 				DiffSuppressFunc: caseInsensitive(),
 				Description:      "The login of the user to assign a Copilot seat.",
 			},
+			"created_at": {
+				Type:        schema.TypeString,
+				Computed:    true,
+				Description: "Timestamp of when the seat was first assigned.",
+			},
+			"pending_cancellation_date": {
+				Type:        schema.TypeString,
+				Computed:    true,
+				Description: "Date on which the seat will be cancelled, if pending cancellation.",
+			},
+			"last_activity_at": {
+				Type:        schema.TypeString,
+				Computed:    true,
+				Description: "Timestamp of the user's last Copilot activity.",
+			},
+			"last_activity_editor": {
+				Type:        schema.TypeString,
+				Computed:    true,
+				Description: "Editor used in the user's last Copilot activity.",
+			},
+			"plan_type": {
+				Type:        schema.TypeString,
+				Computed:    true,
+				Description: "The Copilot plan type for this seat (e.g. business, enterprise).",
+			},
 		},
 	}
 }
@@ -56,7 +81,7 @@ func resourceGithubCopilotOrganizationSeatAssignmentRead(ctx context.Context, d
 
 	username := d.Id()
 
-	_, _, err := client.Copilot.GetSeatDetails(ctx, org, username)
+	seat, _, err := client.Copilot.GetSeatDetails(ctx, org, username)
 	if err != nil {
 		if ghErr, ok := errors.AsType[*github.ErrorResponse](err); ok && ghErr.Response.StatusCode == http.StatusNotFound {
 			tflog.Info(ctx, "Copilot seat assignment no longer exists, removing from state", map[string]any{"username": username})
@@ -70,6 +95,26 @@ func resourceGithubCopilotOrganizationSeatAssignmentRead(ctx context.Context, d
 		return diag.FromErr(err)
 	}
 
+	createdAt := seat.GetCreatedAt()
+	if err := d.Set("created_at", createdAt.String()); err != nil {
+		return diag.FromErr(err)
+	}
+	if err := d.Set("pending_cancellation_date", seat.GetPendingCancellationDate()); err != nil {
+		return diag.FromErr(err)
+	}
+	if err := d.Set("last_activity_editor", seat.GetLastActivityEditor()); err != nil {
+		return diag.FromErr(err)
+	}
+	if err := d.Set("plan_type", seat.GetPlanType()); err != nil {
+		return diag.FromErr(err)
+	}
+
+	if lastActivity := seat.GetLastActivityAt(); !lastActivity.IsZero() {
+		if err := d.Set("last_activity_at", lastActivity.String()); err != nil {
+			return diag.FromErr(err)
+		}
+	}
+
 	return nil
 }
 

templates/resources/copilot_organization_seat_assignment.md.tmpl

@@ -20,6 +20,16 @@ The following arguments are supported:
 
 - `username` - (Required, Forces new resource) The login of the organization member to assign a Copilot seat.
 
+## Attributes Reference
+
+In addition to the arguments above, the following attributes are exported:
+
+- `created_at` - Timestamp of when the seat was first assigned.
+- `pending_cancellation_date` - Date on which the seat will be cancelled, if a cancellation is pending.
+- `last_activity_at` - Timestamp of the user's last Copilot activity.
+- `last_activity_editor` - Editor used in the user's last Copilot activity.
+- `plan_type` - The Copilot plan type for this seat (e.g. `business`, `enterprise`).
+
 ## Import
 
 Copilot organization seat assignments can be imported using the username, e.g.