package checker

import (
	"time"

	sdk "git.happydns.org/checker-sdk-go/checker"
)

// Version is overridden at build time via -ldflags by main.go and
// plugin/plugin.go. Use SetVersion from entrypoints rather than
// assigning to it directly.
var Version = "built-in"

// SetVersion updates the package-level Version reported in the
// CheckerDefinition. Empty values are ignored so an entrypoint that
// forgets its own ldflags does not erase the default.
func SetVersion(v string) {
	if v != "" {
		Version = v
	}
}

// Definition exposes the checker to the happyDomain host.
//
// The checker is zone-scoped: it inspects every pointer service in a
// single pass so the report consolidates findings by owner instead of
// fanning one observation out per service.
func Definition() *sdk.CheckerDefinition {
	def := &sdk.CheckerDefinition{
		ID:      "dangling",
		Name:    "Dangling subdomains",
		Version: Version,
		Availability: sdk.CheckerAvailability{
			ApplyToZone: true,
		},
		ObservationKeys: []sdk.ObservationKey{ObservationKeyDangling},
		Options: sdk.CheckerOptionsDocumentation{
			DomainOpts: []sdk.CheckerOptionDocumentation{
				{
					Id:       "domain_name",
					Type:     "string",
					Label:    "Domain name",
					AutoFill: sdk.AutoFillDomainName,
					Hide:     true,
				},
				{
					Id:       "zone",
					Type:     "string",
					Label:    "Zone",
					AutoFill: sdk.AutoFillZone,
					Hide:     true,
				},
			},
			RunOpts: []sdk.CheckerOptionDocumentation{
				{
					Id:          "skip_resolution",
					Type:        "bool",
					Label:       "Skip live DNS resolution",
					Description: "When set, the checker only reports the static structure of pointer records. Useful for offline analysis; defaults to false.",
					Default:     false,
				},
			},
		},
		Rules: []sdk.CheckRule{
			&danglingRule{},
		},
		HasHTMLReport: true,
		Interval: &sdk.CheckIntervalSpec{
			Min:     15 * time.Minute,
			Max:     7 * 24 * time.Hour,
			Default: 12 * time.Hour,
		},
	}
	def.BuildRulesInfo()
	return def
}