package sniper

import (
	"sort"
	"time"
)

// emitSummary 在任务结束时回调一次汇总；OnSummary 为 nil 时不做任何事。
func (r *Runner) emitSummary(state *runState, accounts, targets, attempts int, cost time.Duration) {
	if r.OnSummary == nil {
		return
	}
	stats := state.snapshotStats()
	summary := RunSummary{
		Attempts:     attempts,
		Accounts:     accounts,
		Targets:      targets,
		Duration:     cost,
		ListReqs:     stats.listReqs,
		ExchangeReqs: stats.exchangeReqs,
		ScoreReqs:    stats.scoreReqs,
		RecordReqs:   stats.recordReqs,
		SuccessUIDs:  len(stats.successUIDs),
		Outcomes:     stats.outcomes,
	}
	if state.windowed() {
		summary.OpenAt = state.openAt
		summary.WindowSeconds = int(state.windowLen / time.Second)
	}
	for _, kind := range []requestKind{reqList, reqExchange, reqScore, reqRecord} {
		stat := stats.requests[kind]
		if stat == nil || stat.count == 0 {
			continue
		}
		summary.RequestStats = append(summary.RequestStats, RequestStat{
			Kind:    kind.String(),
			Count:   stat.count,
			Failed:  stat.failed,
			Total:   stat.total,
			Slowest: stat.slowest,
			LastErr: stat.lastErr,
		})
	}
	uids := make([]int64, 0, len(stats.accounts))
	for uid := range stats.accounts {
		uids = append(uids, uid)
	}
	sort.Slice(uids, func(i, j int) bool { return uids[i] < uids[j] })
	for _, uid := range uids {
		summary.AccountOutcomes = append(summary.AccountOutcomes, *stats.accounts[uid])
	}
	r.OnSummary(summary)
}