package dto

import "git.yeij.top/AskaEth/Scoreboard/server/internal/domain"

// StandingRow 是 GET /api/standings 与 snapshot.standings 的线上结构。
//
// 字段名与 web/src/shared/types.ts 的 StandingRow 对齐：大屏与管理端共用一份解析逻辑，
// 不能再把 domain.StandingsRow 的 points/code/medals 直接下发。
type StandingRow struct {
	TeamID      int64   `json:"teamId"`
	TeamCode    string  `json:"teamCode"`
	TeamName    string  `json:"teamName"`
	ShortName   *string `json:"shortName"`
	Color       *string `json:"color"`
	LogoPath    *string `json:"logoPath"`
	Rank        int     `json:"rank"`
	Gold        int     `json:"gold"`
	Silver      int     `json:"silver"`
	Bronze      int     `json:"bronze"`
	MedalTotal  int     `json:"medalTotal"`
	TotalPoints float64 `json:"totalPoints"`
	RankChange  *int    `json:"rankChange"`
}

// StandingRows 把 domain 榜单转换成线上结构。
// teams 用于补齐颜色/logo 等 domain 榜单没带的展示字段；rankChange 快照没有对比基准，与 REST 一致下发 null。
func StandingRows(rows []domain.StandingsRow, teams []domain.Team) []StandingRow {
	byID := make(map[int64]domain.Team, len(teams))
	for _, t := range teams {
		byID[t.ID] = t
	}

	out := make([]StandingRow, 0, len(rows))
	for _, r := range rows {
		t := byID[r.TeamID]
		row := StandingRow{
			TeamID:      r.TeamID,
			TeamCode:    r.Code,
			TeamName:    r.Name,
			ShortName:   nilIfEmpty(r.ShortName),
			Rank:        r.Rank,
			Gold:        r.Gold,
			Silver:      r.Silver,
			Bronze:      r.Bronze,
			MedalTotal:  r.Medals,
			TotalPoints: r.Points,
			RankChange:  nil,
		}
		if t.ID != 0 {
			row.Color = nilIfEmpty(t.Color)
			row.LogoPath = nilIfEmpty(t.LogoPath)
			if row.TeamCode == "" {
				row.TeamCode = t.Code
			}
			if row.TeamName == "" {
				row.TeamName = t.Name
			}
			if row.ShortName == nil {
				row.ShortName = nilIfEmpty(t.ShortName)
			}
		}
		out = append(out, row)
	}
	return out
}