package app

import (
	"os"
	"path/filepath"
	"testing"
)

func TestLoadDotEnv(t *testing.T) {
	path := filepath.Join(t.TempDir(), ".env")
	contents := "# comment\nDOTENV_TEST_ONE=value\nDOTENV_TEST_TWO=Preface Tools - Comic Animator\nDOTENV_TEST_THREE=\"quoted value\"\n"
	if err := os.WriteFile(path, []byte(contents), 0600); err != nil {
		t.Fatal(err)
	}
	t.Setenv("DOTENV_TEST_ONE", "existing")
	if err := LoadDotEnv(path); err != nil {
		t.Fatal(err)
	}
	if got := os.Getenv("DOTENV_TEST_ONE"); got != "existing" {
		t.Fatalf("existing environment overwritten: %q", got)
	}
	if got := os.Getenv("DOTENV_TEST_TWO"); got != "Preface Tools - Comic Animator" {
		t.Fatalf("unquoted value: %q", got)
	}
	if got := os.Getenv("DOTENV_TEST_THREE"); got != "quoted value" {
		t.Fatalf("quoted value: %q", got)
	}
}

func TestLoadDotEnvMissingFile(t *testing.T) {
	if err := LoadDotEnv(filepath.Join(t.TempDir(), "missing")); err != nil {
		t.Fatal(err)
	}
}