package services

import (
	"fmt"
	"os"
	"path/filepath"
	"runtime"
	"testing"
	"worker/internal/services"
	"worker/internal/utils"

	"github.com/stretchr/testify/assert"
)

func TestCompressPNGHappyPath(t *testing.T) {
	tmp := t.TempDir()
	filePath := filepath.Join(tmp, "test.png")
	// 从 test/resource 复制真实 PNG，路径基于当前测试文件位置
	_, self, _, _ := runtime.Caller(0)
	srcPath := filepath.Join(filepath.Dir(self), "..", "resource", "test.png")
	err := utils.CopyFile(srcPath, filePath)
	if err != nil {
		t.Fatal(err)
	}
	got, err := services.CompressImage(filePath, "image/png")
	if err != nil {
		t.Fatal(err)
	}
	assert.Equal(t, got, filePath+"_compressed")
	origInfo, err := os.Stat(filePath)
	if err != nil {
		t.Fatal(err)
	}
	compInfo, err := os.Stat(got)
	if err != nil {
		t.Fatal(err)
	}
	assert.NotEqual(t, origInfo.Size(), compInfo.Size())
	fmt.Printf("原图: %d | 压缩后: %d | 压缩率: %f%%\n", origInfo.Size(), compInfo.Size(), float64(compInfo.Size())/float64(origInfo.Size())*100)
}

func TestCompressJPEGHappyPath(t *testing.T) {
	tmp := t.TempDir()
	filePath := filepath.Join(tmp, "test.jpg")
	_, self, _, _ := runtime.Caller(0)
	srcPath := filepath.Join(filepath.Dir(self), "..", "resource", "test.jpg")
	err := utils.CopyFile(srcPath, filePath)
	if err != nil {
		t.Fatal(err)
	}
	got, err := services.CompressImage(filePath, "image/jpeg")
	if err != nil {
		t.Fatal(err)
	}
	assert.Equal(t, got, filePath+"_compressed")
	origInfo, err := os.Stat(filePath)
	if err != nil {
		t.Fatal(err)
	}
	compInfo, err := os.Stat(got)
	if err != nil {
		t.Fatal(err)
	}
	assert.NotEqual(t, origInfo.Size(), compInfo.Size())
	fmt.Printf("原图: %d | 压缩后: %d | 压缩率: %f%%\n", origInfo.Size(), compInfo.Size(), float64(compInfo.Size())/float64(origInfo.Size())*100)
}