package business

import (
	"context"
	"sync"
	"testing"

	"kra/internal/biz/business"
)

func TestOtherSettingsReuseParametersAndSaveAtomically(t *testing.T) {
	db := openTestDB(t)
	if err := db.AutoMigrate(&otherSettingsPO{}); err != nil {
		t.Fatal(err)
	}
	if err := db.Create(&otherSettingsPO{Name: "other", Key: "unrelated", Value: "keep"}).Error; err != nil {
		t.Fatal(err)
	}
	r := NewOtherSettingsRepo(testData{db})
	ctx := context.Background()
	if value, err := r.Find(ctx); err != nil || value != nil {
		t.Fatal("缺省记录应由用例提供默认值")
	}
	var wg sync.WaitGroup
	for i := int64(1); i <= 8; i++ {
		wg.Add(1)
		go func(value int64) {
			defer wg.Done()
			if _, err := r.Save(ctx, business.OtherSettings{Amount: value * 100, Days: value}); err != nil {
				t.Error(err)
			}
		}(i)
	}
	wg.Wait()
	value, err := NewOtherSettingsRepo(testData{db}).Find(ctx)
	if err != nil || value.Amount != value.Days*100 || value.UpdatedAt.IsZero() {
		t.Fatalf("重建仓储后应回显完整持久化参数: %+v %v", value, err)
	}
	var count int64
	if err := db.Model(&otherSettingsPO{}).Where(map[string]any{"key": otherSettingsKey}).Count(&count).Error; err != nil || count != 1 {
		t.Fatal("反复保存不能新增多份参数")
	}
	var other otherSettingsPO
	if err := db.Where(map[string]any{"key": "unrelated"}).First(&other).Error; err != nil || other.Value != "keep" {
		t.Fatal("保存不得覆盖其他参数")
	}
	if _, err := r.Save(ctx, business.OtherSettings{Amount: 0, Days: 1}); err != nil {
		t.Fatal(err)
	}
	value, _ = r.Find(ctx)
	if value.Amount != 0 || value.Days != 1 {
		t.Fatal("零金额必须持久化")
	}
}

func TestOtherSettingsMalformedStoredValueCanBeRepaired(t *testing.T) {
	db := openTestDB(t)
	if err := db.AutoMigrate(&otherSettingsPO{}); err != nil {
		t.Fatal(err)
	}
	r := NewOtherSettingsRepo(testData{db})
	ctx := context.Background()
	if _, err := r.Save(ctx, business.DefaultOtherSettings()); err != nil {
		t.Fatal(err)
	}
	for _, raw := range []string{`{"amount":3000}`, `{"amount":3000,"days":0}`, `{"amount":1.5,"days":30}`, `invalid`} {
		if err := db.Model(&otherSettingsPO{}).Where(map[string]any{"key": otherSettingsKey}).Update("value", raw).Error; err != nil {
			t.Fatal(err)
		}
		if _, err := r.Find(ctx); err != business.ErrOtherSettingsStored {
			t.Fatalf("错误参数不能静默当成默认值: %v", err)
		}
	}
	if _, err := r.Save(ctx, business.DefaultOtherSettings()); err != nil {
		t.Fatal(err)
	}
	value, err := r.Find(ctx)
	if err != nil || value.Amount != 3000 || value.Days != 30 {
		t.Fatal("恢复默认保存应修复格式错误的参数")
	}
}