package usecase

import (
	"testing"

	"github.com/stretchr/testify/assert"
	"golang.org/x/crypto/bcrypt"
)

func TestHashPassword(t *testing.T) {
	password := "securepassword123"
	cost := bcrypt.DefaultCost

	hashedPassword, err := HashPassword(password, cost)

	assert.NoError(t, err, "生成哈希密碼應該成功")
	assert.NotEmpty(t, hashedPassword, "生成的哈希密碼不應為空")

	// 確認哈希密碼長度符合預期
	assert.Greater(t, len(hashedPassword), 0, "哈希密碼長度應大於零")
}

func TestCheckPasswordHash(t *testing.T) {
	password := "securepassword123"
	cost := bcrypt.DefaultCost

	// 生成哈希密碼
	hashedPassword, err := HashPassword(password, cost)
	assert.NoError(t, err)

	// 驗證密碼與哈希是否匹配
	assert.True(t, CheckPasswordHash(password, hashedPassword), "密碼應與哈希匹配")

	// 測試不匹配的密碼
	wrongPassword := "wrongpassword"
	assert.False(t, CheckPasswordHash(wrongPassword, hashedPassword), "錯誤密碼不應與哈希匹配")
}

func TestGetHashingCost(t *testing.T) {
	password := "securepassword123"
	cost := bcrypt.DefaultCost

	// 生成哈希密碼
	hashedPassword, err := HashPassword(password, cost)
	assert.NoError(t, err)

	// 驗證哈希成本
	actualCost := GetHashingCost([]byte(hashedPassword))
	assert.Equal(t, cost, actualCost, "哈希成本應與生成時的一致")
}