package command

import (
	"errors"
	"fmt"
	"time"

	"github.com/Fimeg/RedFlag/aggregator-server/internal/models"
	"github.com/google/uuid"
)

// Factory creates validated AgentCommand instances
type Factory struct {
	validator *Validator
}

// NewFactory creates a new command factory
func NewFactory() *Factory {
	return &Factory{
		validator: NewValidator(),
	}
}

// Create generates a new validated AgentCommand with unique ID
func (f *Factory) Create(agentID uuid.UUID, commandType string, params map[string]interface{}) (*models.AgentCommand, error) {
	cmd := &models.AgentCommand{
		ID:          uuid.New(),
		AgentID:     agentID,
		CommandType: commandType,
		Status:      "pending",
		Source:      determineSource(commandType),
		Params:      params,
		CreatedAt:   time.Now(),
		UpdatedAt:   time.Now(),
	}

	if err := f.validator.Validate(cmd); err != nil {
		return nil, fmt.Errorf("command validation failed: %w", err)
	}

	return cmd, nil
}

// determineSource classifies command source based on type
func determineSource(commandType string) string {
	if isSystemCommand(commandType) {
		return "system"
	}
	return "manual"
}

func isSystemCommand(commandType string) bool {
	systemCommands := []string{
		"enable_heartbeat",
		"disable_heartbeat",
		"update_check",
		"cleanup_old_logs",
	}

	for _, cmd := range systemCommands {
		if commandType == cmd {
			return true
		}
	}
	return false
}