package service

import (
	"testing"

	"github.com/freefire/jiang13-bbs/model"
	"github.com/glebarez/sqlite"
	"gorm.io/gorm"
)

func newUrlStyleTestService(t *testing.T) *SettingService {
	t.Helper()
	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
	if err != nil {
		t.Fatalf("open sqlite: %v", err)
	}
	if err := db.AutoMigrate(&model.SiteSetting{}); err != nil {
		t.Fatalf("migrate: %v", err)
	}
	return NewSettingService(db)
}

func TestUrlStyleDefaultWhenMissing(t *testing.T) {
	s := newUrlStyleTestService(t)
	got, err := s.UrlStyle()
	if err != nil {
		t.Fatal(err)
	}
	if got != DefaultUrlStyle {
		t.Fatalf("missing row should fall back to %q, got %q", DefaultUrlStyle, got)
	}
	pub, err := s.Public()
	if err != nil {
		t.Fatal(err)
	}
	if pub.UrlStyle != DefaultUrlStyle {
		t.Fatalf("Public().UrlStyle = %q, want %q", pub.UrlStyle, DefaultUrlStyle)
	}
}

func TestSetUrlStyleRoundTrip(t *testing.T) {
	s := newUrlStyleTestService(t)
	for _, style := range []string{"html", "discuz"} {
		if err := s.SetUrlStyle(style); err != nil {
			t.Fatalf("SetUrlStyle(%q): %v", style, err)
		}
		got, err := s.UrlStyle()
		if err != nil {
			t.Fatal(err)
		}
		if got != style {
			t.Fatalf("UrlStyle() = %q, want %q", got, style)
		}
		pub, err := s.Public()
		if err != nil {
			t.Fatal(err)
		}
		if pub.UrlStyle != style {
			t.Fatalf("Public().UrlStyle = %q, want %q", pub.UrlStyle, style)
		}
	}
}

func TestSetUrlStyleDefaultDeletesKey(t *testing.T) {
	s := newUrlStyleTestService(t)
	if err := s.SetUrlStyle("html"); err != nil {
		t.Fatal(err)
	}
	// 传 default 应删键，恢复「缺行=默认」语义（大小写与空白容错）
	if err := s.SetUrlStyle("  DEFAULT "); err != nil {
		t.Fatal(err)
	}
	got, err := s.UrlStyle()
	if err != nil {
		t.Fatal(err)
	}
	if got != DefaultUrlStyle {
		t.Fatalf("after reset got %q, want %q", got, DefaultUrlStyle)
	}
	var rows int64
	s.db.Where("key = ?", SettingKeyUrlStyle).Model(&model.SiteSetting{}).Count(&rows)
	if rows != 0 {
		t.Fatalf("default should delete the row, rows=%d", rows)
	}
}

func TestSetUrlStyleRejectsInvalid(t *testing.T) {
	s := newUrlStyleTestService(t)
	for _, bad := range []string{"", "pretty", "HTML5", "thread", "../etc"} {
		if err := s.SetUrlStyle(bad); err == nil {
			t.Fatalf("SetUrlStyle(%q) should fail", bad)
		}
	}
	// 非法值不应落库
	if _, err := s.UrlStyle(); err != nil {
		t.Fatal(err)
	}
}

func TestUrlStyleInvalidStoredValueFallsBack(t *testing.T) {
	s := newUrlStyleTestService(t)
	if err := s.putValue(SettingKeyUrlStyle, "nonsense"); err != nil {
		t.Fatal(err)
	}
	got, err := s.UrlStyle()
	if err != nil {
		t.Fatal(err)
	}
	if got != DefaultUrlStyle {
		t.Fatalf("invalid stored value should fall back to %q, got %q", DefaultUrlStyle, got)
	}
}