package cast_test

import (
	"strings"
	"testing"

	"apigo.cc/go/cast"
)

func TestGenerics(t *testing.T) {
	// Test If
	if cast.If(true, 1, 2) != 1 { t.Error("If int failed") }
	if cast.If(false, "A", "B") != "B" { t.Error("If string failed") }

	// Test In
	if !cast.In([]int{1, 2, 3}, 2) { t.Error("In int failed") }
	if cast.In([]string{"A", "B"}, "C") { t.Error("In string negative failed") }

	// Test Switch
	if cast.Switch(1, "A", "B", "C") != "B" { t.Error("Switch failed") }
	if cast.Switch(5, 1, 2) != 0 { t.Error("Switch out of range failed") }
}

func TestSpecialJson(t *testing.T) {
	// 关键测试：特殊 HTML 字符序列化不应被转义
	type Content struct {
		Text string `json:"text"`
	}
	c := Content{Text: "<a> & <b>"}
	
	// 标准 json.Marshal 会变成 "<a> \u0026 <b>"
	// 我们期望输出原始字符 "<a> & <b>"
	js := cast.Json(c)
	expected := `{"text":"<a> & <b>"}`
	if js != expected {
		t.Errorf("Special JSON failed.\nExpected: %s\nActual:   %s", expected, js)
	}

	// 漂亮打印测试
	jsP := cast.JsonP(c)
	if !strings.Contains(jsP, "&") || !strings.Contains(jsP, "\n") {
		t.Error("JsonP special content failed")
	}
}

func TestComplexJsonType(t *testing.T) {
	// 测试 map[interface{}]interface{} 这种标准库无法处理的类型
	data := map[interface{}]interface{}{
		"name": "Tom",
		123:    "numeric key",
		"sub": map[interface{}]interface{}{
			"ok": true,
		},
	}
	
	js := cast.Json(data)
	// 期望 123 被转为 "123" 且内容正确
	if !strings.Contains(js, `"123":"numeric key"`) || !strings.Contains(js, `"ok":true`) {
		t.Errorf("Complex JSON type failed: %s", js)
	}
}

func TestPointerHelpers(t *testing.T) {
	s := "hello"
	if *cast.StringPtr(s) != s { t.Error("StringPtr failed") }
	
	i := 100
	if *cast.IntPtr(i) != i { t.Error("IntPtr failed") }
	
	if *cast.BoolPtr(true) != true || *cast.BoolPtr(false) != false {
		t.Error("BoolPtr failed")
	}
}

func TestNameConversions(t *testing.T) {
	if cast.GetLowerName("UserName") != "userName" { t.Error("GetLowerName failed") }
	if cast.GetUpperName("userName") != "UserName" { t.Error("GetUpperName failed") }
}

func TestEmptyValues(t *testing.T) {
	if cast.Int(nil) != 0 { t.Error("Int(nil) failed") }
	if cast.String(nil) != "" { t.Error("String(nil) failed") }
	if cast.Bool(nil) != false { t.Error("Bool(nil) failed") }
}