Pad/internal/io/pool/result.go

package pool

import "time"

// Result is posted back to the logic goroutine when a task completes.
// Results are immutable and contain all information needed to apply
// the task outcome to state.
type Result struct {
	TaskID    string    `json:"task_id"`
	TaskType  TaskType  `json:"task_type"`
	Success   bool      `json:"success"`
	Data      any       `json:"data,omitempty"`
	Error     error     `json:"error,omitempty"`
	Timestamp time.Time `json:"timestamp"`
	DirPath   string    `json:"dir_path,omitempty"`
}

// IsSuccess returns true if the task completed successfully.
func (r Result) IsSuccess() bool {
	return r.Success && r.Error == nil
}

// IsError returns true if the task failed.
func (r Result) IsError() bool {
	return !r.Success || r.Error != nil
}

// IsBrowserResult returns true if this result is for a browser task.
func (r Result) IsBrowserResult() bool {
	switch r.TaskType {
	case TypeReadDir, TypeBuildIndex, TypeLoadIndex, TypeLoadPages, TypeStatDir:
		return true
	default:
		return false
	}
}

// IsFileResult returns true if this result is for a file operation.
func (r Result) IsFileResult() bool {
	switch r.TaskType {
	case TypeReadFile, TypeWriteFile, TypeStatFile:
		return true
	default:
		return false
	}
}

// IsCacheResult returns true if this result is for a cache operation.
func (r Result) IsCacheResult() bool {
	switch r.TaskType {
	case TypeWriteCache, TypeReadCache, TypeInvalidate:
		return true
	default:
		return false
	}
}

// IsStateResult returns true if this result is for state persistence.
func (r Result) IsStateResult() bool {
	switch r.TaskType {
	case TypeSaveState, TypeSaveUndo:
		return true
	default:
		return false
	}
}

// Duration returns the time taken for this result (for benchmarking).
func (r Result) Duration() time.Duration {
	// In production, this would be set by the worker.
	// For now, returns zero.
	return 0
}