package vacuum

import (
	"github.com/seaweedfs/seaweedfs/weed/admin/config"
	"github.com/seaweedfs/seaweedfs/weed/worker/tasks/base"
)

// Config extends BaseConfig with vacuum-specific settings
type Config struct {
	base.BaseConfig
	GarbageThreshold    float64 `json:"garbage_threshold"`
	MinVolumeAgeSeconds int     `json:"min_volume_age_seconds"`
	MinIntervalSeconds  int     `json:"min_interval_seconds"`
}

// NewDefaultConfig creates a new default vacuum configuration
func NewDefaultConfig() *Config {
	return &Config{
		BaseConfig: base.BaseConfig{
			Enabled:             true,
			ScanIntervalSeconds: 2 * 60 * 60, // 2 hours
			MaxConcurrent:       2,
		},
		GarbageThreshold:    0.3,              // 30%
		MinVolumeAgeSeconds: 24 * 60 * 60,     // 24 hours
		MinIntervalSeconds:  7 * 24 * 60 * 60, // 7 days
	}
}

// GetConfigSpec returns the configuration schema for vacuum tasks
func GetConfigSpec() base.ConfigSpec {
	return base.ConfigSpec{
		Fields: []*config.Field{
			{
				Name:         "enabled",
				JSONName:     "enabled",
				Type:         config.FieldTypeBool,
				DefaultValue: true,
				Required:     false,
				DisplayName:  "Enable Vacuum Tasks",
				Description:  "Whether vacuum tasks should be automatically created",
				HelpText:     "Toggle this to enable or disable automatic vacuum task generation",
				InputType:    "checkbox",
				CSSClasses:   "form-check-input",
			},
			{
				Name:         "scan_interval_seconds",
				JSONName:     "scan_interval_seconds",
				Type:         config.FieldTypeInterval,
				DefaultValue: 2 * 60 * 60,
				MinValue:     10 * 60,
				MaxValue:     24 * 60 * 60,
				Required:     true,
				DisplayName:  "Scan Interval",
				Description:  "How often to scan for volumes needing vacuum",
				HelpText:     "The system will check for volumes that need vacuuming at this interval",
				Placeholder:  "2",
				Unit:         config.UnitHours,
				InputType:    "interval",
				CSSClasses:   "form-control",
			},
			{
				Name:         "max_concurrent",
				JSONName:     "max_concurrent",
				Type:         config.FieldTypeInt,
				DefaultValue: 2,
				MinValue:     1,
				MaxValue:     10,
				Required:     true,
				DisplayName:  "Max Concurrent Tasks",
				Description:  "Maximum number of vacuum tasks that can run simultaneously",
				HelpText:     "Limits the number of vacuum operations running at the same time to control system load",
				Placeholder:  "2 (default)",
				Unit:         config.UnitCount,
				InputType:    "number",
				CSSClasses:   "form-control",
			},
			{
				Name:         "garbage_threshold",
				JSONName:     "garbage_threshold",
				Type:         config.FieldTypeFloat,
				DefaultValue: 0.3,
				MinValue:     0.0,
				MaxValue:     1.0,
				Required:     true,
				DisplayName:  "Garbage Percentage Threshold",
				Description:  "Trigger vacuum when garbage ratio exceeds this percentage",
				HelpText:     "Volumes with more deleted content than this threshold will be vacuumed",
				Placeholder:  "0.30 (30%)",
				Unit:         config.UnitNone,
				InputType:    "number",
				CSSClasses:   "form-control",
			},
			{
				Name:         "min_volume_age_seconds",
				JSONName:     "min_volume_age_seconds",
				Type:         config.FieldTypeInterval,
				DefaultValue: 24 * 60 * 60,
				MinValue:     1 * 60 * 60,
				MaxValue:     7 * 24 * 60 * 60,
				Required:     true,
				DisplayName:  "Minimum Volume Age",
				Description:  "Only vacuum volumes older than this duration",
				HelpText:     "Prevents vacuuming of recently created volumes that may still be actively written to",
				Placeholder:  "24",
				Unit:         config.UnitHours,
				InputType:    "interval",
				CSSClasses:   "form-control",
			},
			{
				Name:         "min_interval_seconds",
				JSONName:     "min_interval_seconds",
				Type:         config.FieldTypeInterval,
				DefaultValue: 7 * 24 * 60 * 60,
				MinValue:     1 * 24 * 60 * 60,
				MaxValue:     30 * 24 * 60 * 60,
				Required:     true,
				DisplayName:  "Minimum Interval",
				Description:  "Minimum time between vacuum operations on the same volume",
				HelpText:     "Prevents excessive vacuuming of the same volume by enforcing a minimum wait time",
				Placeholder:  "7",
				Unit:         config.UnitDays,
				InputType:    "interval",
				CSSClasses:   "form-control",
			},
		},
	}
}