package service

import (
	"github.com/QuantumNous/new-api/model"
	"sort"
)

type ProbeHistoryPoint struct {
	At     int64 `json:"at"`
	Status int   `json:"status"`
}

func GroupProbeHistory(ids []int, tasks []model.SystemTask) []ProbeHistoryPoint {
	points := []ProbeHistoryPoint{}
	for _, task := range tasks {
		if task.Type != model.SystemTaskTypeChannelAvailability {
			continue
		}
		var state ChannelAvailabilityState
		if task.DecodeState(&state) != nil {
			continue
		}
		evidence := map[int]ChannelDetectionEvidence{}
		for _, round := range state.Rounds {
			evidence[round.ChannelID] = ChannelDetectionEvidence{At: round.At, Success: round.Success}
		}
		latest := int64(0)
		for _, id := range ids {
			latest = max(latest, evidence[id].At)
		}
		if latest == 0 {
			continue
		}
		status, at := DetectionFallbackStatus(ids, evidence, latest)
		points = append(points, ProbeHistoryPoint{At: at, Status: status})
	}
	sort.Slice(points, func(i, j int) bool { return points[i].At < points[j].At })
	if len(points) > 18 {
		points = points[len(points)-18:]
	}
	return points
}