package duckduckgo

import (
	"testing"
)

func TestConfig_ToSearchURL_Default(t *testing.T) {
	c := Config{SafeSearch: SafeSearchOff}
	u := c.ToSearchURL("test query")

	if u.Host != "duckduckgo.com" {
		t.Errorf("Host = %q, want %q", u.Host, "duckduckgo.com")
	}

	if u.Query().Get("q") != "test query" {
		t.Errorf("q = %q, want %q", u.Query().Get("q"), "test query")
	}

	if u.Query().Get("kp") != "-2" {
		t.Errorf("kp = %q, want %q", u.Query().Get("kp"), "-2")
	}
}

func TestConfig_ToSearchURL_SafeSearchOn(t *testing.T) {
	c := Config{SafeSearch: SafeSearchOn}
	u := c.ToSearchURL("test")

	if u.Query().Get("kp") != "1" {
		t.Errorf("kp = %q, want %q", u.Query().Get("kp"), "1")
	}
}

func TestConfig_ToSearchURL_SafeSearchModerate(t *testing.T) {
	c := Config{SafeSearch: SafeSearchModerate}
	u := c.ToSearchURL("test")

	if u.Query().Get("kp") != "-1" {
		t.Errorf("kp = %q, want %q", u.Query().Get("kp"), "-1")
	}
}

func TestConfig_ToSearchURL_SafeSearchOff(t *testing.T) {
	c := Config{SafeSearch: SafeSearchOff}
	u := c.ToSearchURL("test")

	if u.Query().Get("kp") != "-2" {
		t.Errorf("kp = %q, want %q", u.Query().Get("kp"), "-2")
	}
}

func TestConfig_ToSearchURL_WithRegion(t *testing.T) {
	c := Config{SafeSearch: SafeSearchOff, Region: "us-en"}
	u := c.ToSearchURL("test")

	if u.Query().Get("kl") != "us-en" {
		t.Errorf("kl = %q, want %q", u.Query().Get("kl"), "us-en")
	}
}

func TestConfig_ToSearchURL_WithQuery(t *testing.T) {
	c := Config{SafeSearch: SafeSearchOff}
	u := c.ToSearchURL("golang testing")

	if u.Query().Get("q") != "golang testing" {
		t.Errorf("q = %q, want %q", u.Query().Get("q"), "golang testing")
	}
}

func TestConfig_Validate_DefaultsSafeSearch(t *testing.T) {
	c := Config{SafeSearch: 0}
	c = c.validate()

	if c.SafeSearch != SafeSearchOff {
		t.Errorf("validate() SafeSearch = %d, want %d (SafeSearchOff)", c.SafeSearch, SafeSearchOff)
	}
}

func TestConfig_ToSearchURL_NoRegion(t *testing.T) {
	c := Config{SafeSearch: SafeSearchOff}
	u := c.ToSearchURL("test")

	if u.Query().Get("kl") != "" {
		t.Errorf("kl should be empty when no region, got %q", u.Query().Get("kl"))
	}
}

func TestConfig_ToSearchURL_Scheme(t *testing.T) {
	c := Config{SafeSearch: SafeSearchOff}
	u := c.ToSearchURL("test")

	if u.Scheme != "https" {
		t.Errorf("Scheme = %q, want %q", u.Scheme, "https")
	}
}

func TestConfig_ToSearchURL_SpecialChars(t *testing.T) {
	c := Config{SafeSearch: SafeSearchOff}
	u := c.ToSearchURL("go lang & testing")

	if u.Query().Get("q") != "go lang & testing" {
		t.Errorf("q = %q, want %q", u.Query().Get("q"), "go lang & testing")
	}
}

func TestResult_ZeroValue(t *testing.T) {
	var r Result
	if r.URL != "" || r.Title != "" || r.Description != "" {
		t.Error("zero-value Result should have empty fields")
	}
}

func TestDefaultConfig_SafeSearch(t *testing.T) {
	if DefaultConfig.SafeSearch != SafeSearchOff {
		t.Errorf("DefaultConfig.SafeSearch = %d, want %d", DefaultConfig.SafeSearch, SafeSearchOff)
	}
}