package tui

import (
	"strings"
	"testing"
)

// Guards against the bubbles bug where a text input with width 0 renders only the
// first rune of its placeholder. NewFormStep must set a non-zero width.
func TestPlaceholderRendersBeyondFirstRune(t *testing.T) {
	const placeholder = "postgres://user@host/db"
	f := NewFormStep("t", []FormField{
		{Id: "url", Label: "URL", Placeholder: placeholder, Type: FieldTypeText},
	})

	view := f.Fields[0].input.View()
	if !strings.Contains(view, "ostgres://user@host/db") {
		t.Errorf("placeholder appears truncated; rendered view = %q", view)
	}
}

func TestFormStepValues(t *testing.T) {
	f := NewFormStep("Test", []FormField{
		{
			Id:      "name",
			Label:   "Name",
			Default: "john",
			Type:    FieldTypeText,
		},
		{
			Id:      "secret",
			Label:   "Secret",
			Default: "hunter2",
			Type:    FieldTypePassword,
		},
		{
			Id:      "proto",
			Label:   "Protocol",
			Default: "TCP",
			Type:    FieldTypeSelect,
			Options: []string{"UDP", "TCP"},
		},
		{
			Id:      "mode",
			Label:   "Mode",
			Type:    FieldTypeSelect,
			Options: []string{"a", "b", "c"},
		},
	})

	values := f.Values()

	want := map[string]string{
		"name":   "john", // text default
		"secret": "hunter2",
		"proto":  "TCP", // select default resolves to the matching option
		"mode":   "a",   // select with no default falls back to first option
	}

	for id, exp := range want {
		if got := values[id]; got != exp {
			t.Errorf("Values()[%q] = %q, want %q", id, got, exp)
		}
	}
}

func TestFormStepValues_SelectInvalidDefaultFallsBackToFirst(t *testing.T) {
	f := NewFormStep("Test", []FormField{
		{
			Id:      "proto",
			Label:   "Protocol",
			Default: "NOPE", // not among options
			Type:    FieldTypeSelect,
			Options: []string{"UDP", "TCP"},
		},
	})

	if got := f.Values()["proto"]; got != "UDP" {
		t.Errorf("Values()[proto] = %q, want first option %q", got, "UDP")
	}
}