package config_test

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

	"git.savin.nyc/alex/go-iar-notificator/config"
)

func TestLoadConfig_Success(t *testing.T) {
	// Create a temporary config file
	tempDir := t.TempDir()
	configFile := filepath.Join(tempDir, "test_config.yml")
	yamlContent := `
credentials:
  secret_key: "test_secret"
  ttd_api_key: "test_api_key"
directory: "/test/dir"
watch_debounce_seconds: 5
logging:
  level: "INFO"
`
	err := os.WriteFile(configFile, []byte(yamlContent), 0644)
	if err != nil {
		t.Fatalf("Failed to create temp config file: %v", err)
	}

	// Test LoadConfig
	cfg, err := config.LoadConfig(configFile)
	if err != nil {
		t.Fatalf("Expected no error, got %v", err)
	}

	// Verify the config
	if cfg.Credentials.SecretKey != "test_secret" {
		t.Errorf("Expected SecretKey 'test_secret', got %s", cfg.Credentials.SecretKey)
	}
	if cfg.Credentials.TTDApiKey != "test_api_key" {
		t.Errorf("Expected TTDApiKey 'test_api_key', got %s", cfg.Credentials.TTDApiKey)
	}
	if cfg.Directory != "/test/dir" {
		t.Errorf("Expected Directory '/test/dir', got %s", cfg.Directory)
	}
	if cfg.WatchDebounceSeconds != 5 {
		t.Errorf("Expected WatchDebounceSeconds 5, got %d", cfg.WatchDebounceSeconds)
	}
	if cfg.Logger == nil {
		t.Error("Expected Logger to be set, got nil")
	}
}

func TestLoadConfig_FileNotFound(t *testing.T) {
	_, err := config.LoadConfig("/nonexistent/config.yml")
	if err == nil {
		t.Error("Expected error for non-existent file, got nil")
	}
	if !strings.Contains(err.Error(), "no such file") {
		t.Errorf("Expected error message to contain 'no such file', got %v", err)
	}
}

func TestLoadConfig_InvalidYAML(t *testing.T) {
	// Create a temporary file with invalid YAML
	tempDir := t.TempDir()
	configFile := filepath.Join(tempDir, "invalid_config.yml")
	invalidYAML := `
credentials:
  secret_key: "test"
invalid yaml here
`
	err := os.WriteFile(configFile, []byte(invalidYAML), 0644)
	if err != nil {
		t.Fatalf("Failed to create temp config file: %v", err)
	}

	_, err = config.LoadConfig(configFile)
	if err == nil {
		t.Error("Expected error for invalid YAML, got nil")
	}
	if !strings.Contains(err.Error(), "yaml") {
		t.Errorf("Expected error message to contain 'yaml', got %v", err)
	}
}

func TestLoadConfig_MissingCredentials(t *testing.T) {
	// Create a temporary config file with missing credentials
	tempDir := t.TempDir()
	configFile := filepath.Join(tempDir, "missing_creds_config.yml")
	yamlContent := `
directory: "/test/dir"
watch_debounce_seconds: 5
logging:
  level: "INFO"
`
	err := os.WriteFile(configFile, []byte(yamlContent), 0644)
	if err != nil {
		t.Fatalf("Failed to create temp config file: %v", err)
	}

	_, err = config.LoadConfig(configFile)
	if err == nil {
		t.Error("Expected error for missing credentials, got nil")
	} else if !strings.Contains(err.Error(), "missing required credentials") {
		t.Errorf("Expected error message to contain 'missing required credentials', got %v", err)
	}
}