package checker

import (
	"encoding/json"
	"time"

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

func Provider() sdk.ObservationProvider {
	return &happyDeliverProvider{}
}

type happyDeliverProvider struct{}

func (p *happyDeliverProvider) Key() sdk.ObservationKey {
	return ObservationKeyHappyDeliver
}

func (p *happyDeliverProvider) Definition() *sdk.CheckerDefinition {
	return Definition()
}

func (p *happyDeliverProvider) ExtractMetrics(ctx sdk.ReportContext, collectedAt time.Time) ([]sdk.CheckMetric, error) {
	var data HappyDeliverData
	if err := json.Unmarshal(ctx.Data(), &data); err != nil {
		return nil, err
	}
	if len(data.Scores) == 0 {
		return nil, nil
	}
	metrics := make([]sdk.CheckMetric, 0, len(AllSections))
	for _, section := range AllSections {
		score, ok := data.Scores[section]
		if !ok {
			continue
		}
		metrics = append(metrics, sdk.CheckMetric{
			Name:      "happydeliver_score",
			Value:     float64(score),
			Unit:      "points",
			Labels:    map[string]string{"section": section},
			Timestamp: collectedAt,
		})
	}
	return metrics, nil
}