package config

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

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

func TestLoadDefaultsWithEnv(t *testing.T) {
	t.Setenv("NETTS_API_KEY", "env-key")

	cfg, err := Load("")
	require.NoError(t, err)

	assert.Equal(t, ":8080", cfg.Server.Address)
	assert.Equal(t, "https://netts.io", cfg.Netts.BaseURL)
	assert.Equal(t, 3, cfg.Energy.MinCycles)
	assert.Equal(t, 10, cfg.Energy.TargetCycles)
	assert.Equal(t, "env-key", cfg.Netts.APIKey)
}

func TestLoadFromFileOverridesDefaults(t *testing.T) {
	dir := t.TempDir()
	file := filepath.Join(dir, "config.yaml")

	body := `
server:
  address: ":9090"
  readTimeout: 5s
netts:
  apiKey: "file-key"
  baseUrl: "https://example.com"
energy:
  minCycles: 5
  targetCycles: 8
logging:
  level: debug
`
	require.NoError(t, os.WriteFile(file, []byte(body), 0o600))

	cfg, err := Load(file)
	require.NoError(t, err)

	assert.Equal(t, ":9090", cfg.Server.Address)
	assert.Equal(t, "https://example.com", cfg.Netts.BaseURL)
	assert.Equal(t, 5, cfg.Energy.MinCycles)
	assert.Equal(t, 8, cfg.Energy.TargetCycles)
	assert.Equal(t, "file-key", cfg.Netts.APIKey)
	assert.Equal(t, "debug", cfg.Logging.Level)
}