// This file is part of the happyDomain (R) project.
// Copyright (c) 2020-2026 happyDomain
// Authors: Pierre-Olivier Mercier, et al.
//
// This program is offered under a commercial and under the AGPL license.
// For commercial licensing, contact us at <contact@happydomain.org>.
//
// For AGPL licensing:
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

package checker

import (
	"context"
	"fmt"

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

// One rule per concern so each failure is individually visible rather than buried in a single rule's Code field.
func Rules() []sdk.CheckRule {
	return []sdk.CheckRule{
		RulePresent(),
		RuleNullTarget(),
		RuleTargetNotCNAME(),
		RuleTargetsResolve(),
		RuleTCPReachable(),
		RuleUDPReachable(),
		RulePortValid(),
		RulePriorityWeightSanity(),
		RuleRedundancy(),
	}
}

func getData(ctx context.Context, obs sdk.ObservationGetter) (*SRVData, *sdk.CheckState) {
	var d SRVData
	if err := obs.Get(ctx, ObservationKeySRV, &d); err != nil {
		return nil, &sdk.CheckState{
			Status:  sdk.StatusError,
			Message: fmt.Sprintf("Failed to load SRV observation: %v", err),
			Code:    "srv_obs_error",
		}
	}
	return &d, nil
}

func countProbeResults(d *SRVData, proto string) (total, ok int, failed []string) {
	for _, r := range d.Records {
		if r.IsNullTarget || r.Proto != proto {
			continue
		}
		for _, pr := range r.Probes {
			total++
			if pr.Connected {
				ok++
			} else {
				failed = append(failed, fmt.Sprintf("%s: %s", pr.Address, pr.Error))
			}
		}
	}
	return
}