chore: add form_type parameter argument to db (#17920)

`form_type` is a new parameter field in the terraform provider. Bring
that field into coder/coder.

Validation for `multi-select` has also been added.

provisionersdk/proto/converter.go

@@ -0,0 +1,63 @@
+package proto
+
+import (
+	"golang.org/x/xerrors"
+
+	"github.com/coder/terraform-provider-coder/v2/provider"
+)
+
+func ProviderFormType(ft ParameterFormType) (provider.ParameterFormType, error) {
+	switch ft {
+	case ParameterFormType_DEFAULT:
+		return provider.ParameterFormTypeDefault, nil
+	case ParameterFormType_FORM_ERROR:
+		return provider.ParameterFormTypeError, nil
+	case ParameterFormType_RADIO:
+		return provider.ParameterFormTypeRadio, nil
+	case ParameterFormType_DROPDOWN:
+		return provider.ParameterFormTypeDropdown, nil
+	case ParameterFormType_INPUT:
+		return provider.ParameterFormTypeInput, nil
+	case ParameterFormType_TEXTAREA:
+		return provider.ParameterFormTypeTextArea, nil
+	case ParameterFormType_SLIDER:
+		return provider.ParameterFormTypeSlider, nil
+	case ParameterFormType_CHECKBOX:
+		return provider.ParameterFormTypeCheckbox, nil
+	case ParameterFormType_SWITCH:
+		return provider.ParameterFormTypeSwitch, nil
+	case ParameterFormType_TAGSELECT:
+		return provider.ParameterFormTypeTagSelect, nil
+	case ParameterFormType_MULTISELECT:
+		return provider.ParameterFormTypeMultiSelect, nil
+	}
+	return provider.ParameterFormTypeDefault, xerrors.Errorf("unsupported form type: %s", ft)
+}
+
+func FormType(ft provider.ParameterFormType) (ParameterFormType, error) {
+	switch ft {
+	case provider.ParameterFormTypeDefault:
+		return ParameterFormType_DEFAULT, nil
+	case provider.ParameterFormTypeError:
+		return ParameterFormType_FORM_ERROR, nil
+	case provider.ParameterFormTypeRadio:
+		return ParameterFormType_RADIO, nil
+	case provider.ParameterFormTypeDropdown:
+		return ParameterFormType_DROPDOWN, nil
+	case provider.ParameterFormTypeInput:
+		return ParameterFormType_INPUT, nil
+	case provider.ParameterFormTypeTextArea:
+		return ParameterFormType_TEXTAREA, nil
+	case provider.ParameterFormTypeSlider:
+		return ParameterFormType_SLIDER, nil
+	case provider.ParameterFormTypeCheckbox:
+		return ParameterFormType_CHECKBOX, nil
+	case provider.ParameterFormTypeSwitch:
+		return ParameterFormType_SWITCH, nil
+	case provider.ParameterFormTypeTagSelect:
+		return ParameterFormType_TAGSELECT, nil
+	case provider.ParameterFormTypeMultiSelect:
+		return ParameterFormType_MULTISELECT, nil
+	}
+	return ParameterFormType_DEFAULT, xerrors.Errorf("unsupported form type: %s", ft)
+}

provisionersdk/proto/converter_test.go

@@ -0,0 +1,26 @@
+package proto_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/coder/coder/v2/provisionersdk/proto"
+	"github.com/coder/terraform-provider-coder/v2/provider"
+)
+
+// TestProviderFormTypeEnum keeps the provider.ParameterFormTypes() enum in sync with the
+// proto.FormType enum. If a new form type is added to the provider, it should also be added
+// to the proto file.
+func TestProviderFormTypeEnum(t *testing.T) {
+	t.Parallel()
+
+	all := provider.ParameterFormTypes()
+	for _, p := range all {
+		t.Run(string(p), func(t *testing.T) {
+			t.Parallel()
+			_, err := proto.FormType(p)
+			require.NoError(t, err, "proto form type should be valid, add it to the proto file")
+		})
+	}
+}

provisionersdk/proto/provisioner.proto

@@ -27,6 +27,20 @@ message RichParameterOption {
     string icon = 4;
 }
 
+enum ParameterFormType {
+    DEFAULT = 0;
+    FORM_ERROR = 1;
+    RADIO = 2;
+    DROPDOWN = 3;
+    INPUT = 4;
+    TEXTAREA = 5;
+    SLIDER = 6;
+    CHECKBOX = 7;
+    SWITCH = 8;
+    TAGSELECT = 9;
+    MULTISELECT = 10;
+}
+
 // RichParameter represents a variable that is exposed.
 message RichParameter {
     reserved 14;
@@ -49,6 +63,7 @@ message RichParameter {
     string display_name = 15;
     int32 order = 16;
     bool ephemeral = 17;
+    ParameterFormType form_type = 18;
 }
 
 // RichParameterValue holds the key/value mapping of a parameter.