feat(coderd): add support for presets to the coder API (#16526)

This pull request builds on the existing migrations and queries to add
support for presets to the coder API.

coderd/presets_test.go

@@ -0,0 +1,76 @@
+package coderd_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/coder/coder/v2/coderd/coderdtest"
+	"github.com/coder/coder/v2/coderd/database"
+	"github.com/coder/coder/v2/coderd/database/dbauthz"
+	"github.com/coder/coder/v2/coderd/httpmw"
+	"github.com/coder/coder/v2/coderd/rbac"
+	"github.com/coder/coder/v2/codersdk"
+	"github.com/coder/coder/v2/testutil"
+)
+
+func TestTemplateVersionPresets(t *testing.T) {
+	// TODO (sasswart): Test case: what if a user tries to read presets or preset parameters from a different org?
+
+	t.Parallel()
+
+	givenPreset := codersdk.Preset{
+		Name: "My Preset",
+		Parameters: []codersdk.PresetParameter{
+			{
+				Name:  "preset_param1",
+				Value: "A1B2C3",
+			},
+			{
+				Name:  "preset_param2",
+				Value: "D4E5F6",
+			},
+		},
+	}
+	ctx := testutil.Context(t, testutil.WaitShort)
+
+	client, db := coderdtest.NewWithDatabase(t, &coderdtest.Options{IncludeProvisionerDaemon: true})
+	user := coderdtest.CreateFirstUser(t, client)
+	version := coderdtest.CreateTemplateVersion(t, client, user.OrganizationID, nil)
+
+	// nolint:gocritic // This is a test
+	provisionerCtx := dbauthz.AsProvisionerd(ctx)
+
+	dbPreset, err := db.InsertPreset(provisionerCtx, database.InsertPresetParams{
+		Name:              givenPreset.Name,
+		TemplateVersionID: version.ID,
+	})
+	require.NoError(t, err)
+
+	var presetParameterNames []string
+	var presetParameterValues []string
+	for _, presetParameter := range givenPreset.Parameters {
+		presetParameterNames = append(presetParameterNames, presetParameter.Name)
+		presetParameterValues = append(presetParameterValues, presetParameter.Value)
+	}
+	_, err = db.InsertPresetParameters(provisionerCtx, database.InsertPresetParametersParams{
+		TemplateVersionPresetID: dbPreset.ID,
+		Names:                   presetParameterNames,
+		Values:                  presetParameterValues,
+	})
+	require.NoError(t, err)
+
+	userSubject, _, err := httpmw.UserRBACSubject(ctx, db, user.UserID, rbac.ScopeAll)
+	require.NoError(t, err)
+	userCtx := dbauthz.As(ctx, userSubject)
+
+	gotPresets, err := client.TemplateVersionPresets(userCtx, version.ID)
+	require.NoError(t, err)
+
+	require.Equal(t, 1, len(gotPresets))
+	require.Equal(t, givenPreset.Name, gotPresets[0].Name)
+
+	for _, presetParameter := range givenPreset.Parameters {
+		require.Contains(t, gotPresets[0].Parameters, presetParameter)
+	}
+}