Feat: add data source for templates (#345)

* Feat: add data source for templates

* updated integration test to generate random names

env0/data_templates.go

@@ -0,0 +1,48 @@
+package env0
+
+import (
+	"context"
+
+	"github.com/env0/terraform-provider-env0/client"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/diag"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
+)
+
+func dataTemplates() *schema.Resource {
+	return &schema.Resource{
+		ReadContext: dataTemplatesRead,
+
+		Schema: map[string]*schema.Schema{
+			"names": {
+				Type:        schema.TypeList,
+				Description: "list of all templates (by name)",
+				Computed:    true,
+				Elem: &schema.Schema{
+					Type:        schema.TypeString,
+					Description: "the template name",
+				},
+			},
+		},
+	}
+}
+
+func dataTemplatesRead(ctx context.Context, d *schema.ResourceData, meta interface{}) diag.Diagnostics {
+	apiClient := meta.(client.ApiClientInterface)
+	templates, err := apiClient.Templates()
+	if err != nil {
+		return diag.Errorf("Could not get templates: %v", err)
+	}
+
+	data := []string{}
+
+	for _, template := range templates {
+		data = append(data, template.Name)
+	}
+
+	d.Set("names", data)
+
+	// Not really needed. But required by Terraform SDK - https://github.com/hashicorp/terraform-plugin-sdk/issues/541
+	d.SetId("all_templates_names")
+
+	return nil
+}

env0/data_templates_test.go

@@ -0,0 +1,69 @@
+package env0
+
+import (
+	"errors"
+	"regexp"
+	"testing"
+
+	"github.com/env0/terraform-provider-env0/client"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
+)
+
+func TestTemplatesDataSource(t *testing.T) {
+	template1 := client.Template{
+		Id:   "id0",
+		Name: "name0",
+	}
+
+	template2 := client.Template{
+		Id:   "id1",
+		Name: "name1",
+	}
+
+	resourceType := "env0_templates"
+	resourceName := "test_templates"
+	accessor := dataSourceAccessor(resourceType, resourceName)
+
+	getTestCase := func() resource.TestCase {
+		return resource.TestCase{
+			Steps: []resource.TestStep{
+				{
+					Config: dataSourceConfigCreate(resourceType, resourceName, map[string]interface{}{}),
+					Check: resource.ComposeAggregateTestCheckFunc(
+						resource.TestCheckResourceAttr(accessor, "names.0", template1.Name),
+						resource.TestCheckResourceAttr(accessor, "names.1", template2.Name),
+					),
+				},
+			},
+		}
+	}
+
+	mockTemplates := func(returnValue []client.Template) func(mockFunc *client.MockApiClientInterface) {
+		return func(mock *client.MockApiClientInterface) {
+			mock.EXPECT().Templates().AnyTimes().Return(returnValue, nil)
+		}
+	}
+
+	t.Run("Success", func(t *testing.T) {
+		runUnitTest(t,
+			getTestCase(),
+			mockTemplates([]client.Template{template1, template2}),
+		)
+	})
+
+	t.Run("API Call Error", func(t *testing.T) {
+		runUnitTest(t,
+			resource.TestCase{
+				Steps: []resource.TestStep{
+					{
+						Config:      dataSourceConfigCreate(resourceType, resourceName, map[string]interface{}{}),
+						ExpectError: regexp.MustCompile("error"),
+					},
+				},
+			},
+			func(mock *client.MockApiClientInterface) {
+				mock.EXPECT().Templates().AnyTimes().Return(nil, errors.New("error"))
+			},
+		)
+	})
+}

env0/provider.go

@@ -53,6 +53,7 @@ func Provider(version string) plugin.ProviderFunc {
 				"env0_project_policy":          dataPolicy(),
 				"env0_configuration_variable":  dataConfigurationVariable(),
 				"env0_template":                dataTemplate(),
+				"env0_templates":               dataTemplates(),
 				"env0_ssh_key":                 dataSshKey(),
 				"env0_aws_cost_credentials":    dataCostCredentials(string(client.AwsCostCredentialsType)),
 				"env0_azure_cost_credentials":  dataCostCredentials(string(client.AzureCostCredentialsType)),

examples/data-sources/env0_templates/data-source.tf

@@ -0,0 +1,14 @@
+data "env0_templates" "all_templates" {}
+
+data "env0_template" "templates" {
+  for_each = toset(data.env0_templates.all_templates.names)
+  name     = each.value
+}
+
+output "template1_name" {
+  value = data.env0_template.templates["Github Test-111"].name
+}
+
+output "template2_name" {
+  value = data.env0_template.templates["Github Test-222"].name
+}

tests/integration/022_templates/conf.tf

@@ -0,0 +1,15 @@
+terraform {
+  backend "local" {
+  }
+  required_providers {
+    env0 = {
+      source = "terraform-registry.env0.com/env0/env0"
+    }
+  }
+}
+
+provider "env0" {}
+
+variable "second_run" {
+  default = false
+}

tests/integration/022_templates/expected_outputs.json

@@ -0,0 +1 @@
+{}

tests/integration/022_templates/main.tf

@@ -0,0 +1,44 @@
+provider "random" {}
+
+resource "random_string" "random" {
+  length    = 8
+  special   = false
+  min_lower = 8
+}
+
+data "env0_template" "github_template" {
+  name = "Github Integrated Template"
+}
+
+resource "env0_template" "github_template1" {
+  name                                    = "Github Test ${random_string.random.result}-1"
+  description                             = "Template description - GitHub"
+  type                                    = "terraform"
+  repository                              = data.env0_template.github_template.repository
+  github_installation_id                  = data.env0_template.github_template.github_installation_id
+  path                                    = "misc/null-resource"
+  retries_on_deploy                       = 3
+  retry_on_deploy_only_when_matches_regex = "abc"
+  retries_on_destroy                      = 1
+  terraform_version                       = "0.15.1"
+}
+
+resource "env0_template" "github_template2" {
+  name                                    = "Github Test ${random_string.random.result}-2"
+  description                             = "Template description - GitHub"
+  type                                    = "terraform"
+  repository                              = data.env0_template.github_template.repository
+  github_installation_id                  = data.env0_template.github_template.github_installation_id
+  path                                    = "misc/null-resource"
+  retries_on_deploy                       = 3
+  retry_on_deploy_only_when_matches_regex = "abc"
+  retries_on_destroy                      = 1
+  terraform_version                       = "0.15.1"
+}
+
+data "env0_templates" "all_templates" {}
+
+data "env0_template" "templates" {
+  for_each = toset(data.env0_templates.all_templates.names)
+  name     = each.value
+}