feat: Config Persistence & API (#83)

* introduce a persistent config

* add tests and refactor config creation

* update config handling and add support for removing config

* add support to skip suspicious pkgs marked as trusted

* add support for config dir Env & unexport functions

* small fixes

* add assert for dir

* fix tests

* fix shell source line & trusted pkgs parsing

* fix flag inconsistency

* update config to read on each invocation and create if does not exist

* fix flags value being overridden

* remove redundant func call

* modify trusted pkg check to be config bound

* modify RemoveConfig to rm files & not dir. add tests for paths.go

* add versions for package for e2e

* modify tests to reset config

* fix: Simplify config persistence

* fix: Misc comments

* fix: Misc fix

* fix: Do not overwrite config file if exists

* fix: Do not overwrite config file if exists

* fix: Config cobra command should override and not replace

* fix: Create dir before writing config template

* fix: Create dir before writing config template

* fix: Misc refactoring

* test: Add test for is trusted package version

* Update cmd/setup/setup.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Abhisek Datta <abhisek.datta@gmail.com>

* Update config/config.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Abhisek Datta <abhisek.datta@gmail.com>

* Apply suggestion from @Copilot

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Abhisek Datta <abhisek.datta@gmail.com>

* fix: Remove unused constant in config

* fix: Resolve conflict with event logger

* docs: Add doc for eventlogger.Logger interface

* test: Add E2E for config file creation

* fix: Code review fixes

---------

Signed-off-by: Abhisek Datta <abhisek.datta@gmail.com>
Co-authored-by: Sahilb315 <bansalsahil315@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

internal/eventlog/eventlog_test.go

@@ -7,29 +7,22 @@ import (
 	"sync"
 	"testing"
 	"time"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestGetDefaultLogDir(t *testing.T) {
 	logDir, err := GetDefaultLogDir()
-	if err != nil {
-		t.Fatalf("GetDefaultLogDir() failed: %v", err)
-	}
+	assert.NoError(t, err, "failed to get default log directory")
 
-	if logDir == "" {
-		t.Error("Expected non-empty log directory")
-	}
-
-	// Check that it contains expected path components
-	expectedDir := ".pmg"
-	if filepath.Base(filepath.Dir(logDir)) != expectedDir && filepath.Base(filepath.Dir(filepath.Dir(logDir))) != expectedDir {
-		t.Errorf("Expected log directory to contain %s, got: %s", expectedDir, logDir)
-	}
+	assert.NotEmpty(t, logDir, "log directory should not be empty")
+	assert.Contains(t, logDir, "safedep/pmg/logs")
 }
 
 func TestLoggerInitialization(t *testing.T) {
 	// Create a temporary directory for testing
 	tmpDir := t.TempDir()
-	logDir := filepath.Join(tmpDir, ".pmg", "logs")
+	logDir := filepath.Join(tmpDir, "pmg", "logs")
 
 	// Initialize logger
 	err := InitializeWithDir(logDir)
@@ -151,7 +144,7 @@ func TestInitializeWithFile(t *testing.T) {
 	if err == nil {
 		Close()
 	}
-	
+
 	// Reset for custom file
 	once = sync.Once{}
 	err = InitializeWithFile(logFile)
@@ -231,11 +224,12 @@ func TestCleanupOldLogs(t *testing.T) {
 	}
 
 	// Initialize logger (which triggers cleanup)
-	logger := &Logger{}
+	logger := &fileWithRotationLogger{}
 	err = logger.init(logDir)
 	if err != nil {
 		t.Fatalf("Failed to initialize logger: %v", err)
 	}
+
 	defer logger.Close()
 
 	// Give cleanup goroutine time to run
@@ -251,4 +245,3 @@ func TestCleanupOldLogs(t *testing.T) {
 		t.Error("Recent log file should still exist")
 	}
 }
-