package storage

import "io"
import "os"
import "path/filepath"
import "strings"
import "testing"

func TestFileStoreSaveAndOpen(t *testing.T) {
	var fs FileStore
	var content string
	var path string
	var n int64
	var err error
	var file *os.File
	var data []byte
	fs = FileStore{BaseDir: filepath.Join(t.TempDir(), "uploads")}
	content = "hello storage"
	path, n, err = fs.Save("a.txt", strings.NewReader(content))
	if err != nil {
		t.Fatalf("Save() error: %v", err)
	}
	if n != int64(len(content)) {
		t.Fatalf("unexpected bytes copied: got=%d want=%d", n, len(content))
	}
	file, err = fs.Open(path)
	if err != nil {
		t.Fatalf("Open() error: %v", err)
	}
	defer file.Close()
	data, err = io.ReadAll(file)
	if err != nil {
		t.Fatalf("ReadAll() error: %v", err)
	}
	if string(data) != content {
		t.Fatalf("unexpected content: got=%q want=%q", string(data), content)
	}
}

func TestFileStoreEnsureCreatesDirectory(t *testing.T) {
	var fs FileStore
	var err error
	var st os.FileInfo
	fs = FileStore{BaseDir: filepath.Join(t.TempDir(), "x", "y", "z")}
	err = fs.Ensure()
	if err != nil {
		t.Fatalf("Ensure() error: %v", err)
	}
	st, err = os.Stat(fs.BaseDir)
	if err != nil {
		t.Fatalf("stat basedir: %v", err)
	}
	if !st.IsDir() {
		t.Fatalf("base path is not directory")
	}
}