WIP

Signed-off-by: Danny Kopping <[email protected]>

Author: dannykopping

Diff for: provider/workspace_preset.go

@@ -2,16 +2,20 @@ package provider
 
 import (
 	"context"
-
 	"github.com/hashicorp/terraform-plugin-sdk/v2/diag"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/validation"
 	"github.com/mitchellh/mapstructure"
 )
 
 type WorkspacePreset struct {
-	Name       string            `mapstructure:"name"`
-	Parameters map[string]string `mapstructure:"parameters"`
+	Name       string              `mapstructure:"name"`
+	Parameters map[string]string   `mapstructure:"parameters"`
+	Prebuild   []WorkspacePrebuild `mapstructure:"prebuilds"`
+}
+
+type WorkspacePrebuild struct {
+	Instances int `mapstructure:"instances"`
 }
 
 func workspacePresetDataSource() *schema.Resource {
@@ -24,9 +28,19 @@ func workspacePresetDataSource() *schema.Resource {
 			err := mapstructure.Decode(struct {
 				Name       interface{}
 				Parameters interface{}
+				Prebuilds  []struct {
+					Instances interface{}
+				}
 			}{
 				Name:       rd.Get("name"),
 				Parameters: rd.Get("parameters"),
+				Prebuilds: []struct {
+					Instances interface{}
+				}{
+					{
+						Instances: rd.Get("prebuilds.0.instances"),
+					},
+				},
 			}, &preset)
 			if err != nil {
 				return diag.Errorf("decode workspace preset: %s", err)
@@ -65,6 +79,22 @@ func workspacePresetDataSource() *schema.Resource {
 					ValidateFunc: validation.StringIsNotEmpty,
 				},
 			},
+			"prebuilds": {
+				Type:        schema.TypeSet,
+				Description: "Prebuilds of the workspace preset.",
+				Optional:    true,
+				MaxItems:    1, // TODO: is this always true? More than 1 prebuilds config per preset?
+				Elem: &schema.Resource{
+					Schema: map[string]*schema.Schema{
+						"instances": {
+							Type:         schema.TypeInt,
+							Required:     true,
+							ForceNew:     true,
+							ValidateFunc: validation.IntAtLeast(1),
+						},
+					},
+				},
+			},
 		},
 	}
 }

Diff for: provider/workspace_preset_test.go

@@ -108,6 +108,42 @@ func TestWorkspacePreset(t *testing.T) {
 			// So we test it here to make sure we don't regress.
 			ExpectError: regexp.MustCompile("Inappropriate value for attribute \"parameters\": map of string required"),
 		},
+		{
+			Name: "Prebuilds is set, but not its required fields",
+			Config: `
+			data "coder_workspace_preset" "preset_1" {
+				name = "preset_1"
+				parameters = {
+					"region" = "us-east1-a"
+				}
+				prebuilds {}
+			}`,
+			ExpectError: regexp.MustCompile("The argument \"instances\" is required, but no definition was found."),
+		},
+		{
+			Name: "Prebuilds is set, and so are its required fields",
+			Config: `
+			data "coder_workspace_preset" "preset_1" {
+				name = "preset_1"
+				parameters = {
+					"region" = "us-east1-a"
+				}
+				prebuilds {
+					instances = 1
+				}
+			}`,
+			ExpectError: nil,
+			Check: func(state *terraform.State) error {
+				require.Len(t, state.Modules, 1)
+				require.Len(t, state.Modules[0].Resources, 1)
+				resource := state.Modules[0].Resources["data.coder_workspace_preset.preset_1"]
+				require.NotNil(t, resource)
+				attrs := resource.Primary.Attributes
+				require.Equal(t, attrs["name"], "preset_1")
+				require.Equal(t, attrs["prebuilds.0.instances"], "1")
+				return nil
+			},
+		},
 	}
 
 	for _, testcase := range testcases {