Scoreboard/server/internal/export/entries.go

package export

import (
	"database/sql"
	"fmt"
	"io"
	"strconv"
	"strings"

	"github.com/xuri/excelize/v2"

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

// entriesSheet 是「报名名单」唯一那张表的表名。
const entriesSheet = "报名名单"

// EntriesFilter 是报名名单的筛选条件；某一项为零值即该维度不筛选（全部）。
// heat 的合法值从 1 起，所以 0 可以安全地表示「不按批次筛选」。
type EntriesFilter struct {
	EventID    int64
	CategoryID int64
	TeamID     int64
	Heat       int64
}

// EntryExportRow 是报名名单的一行。
// 批次（heat）属于报名数据，是用户点名要看到的列：未分批时留空，也要占着一列。
type EntryExportRow struct {
	EventCode string
	EventName string
	Category  string
	TeamCode  string
	TeamName  string
	Name      string
	IDCard    string
	Bib       string
	Heat      string
	Gender    string
	Age       any
	Status    string
	Remark    string
}

// EntriesWorkbook 是「报名名单」的内容：一张平铺表。
type EntriesWorkbook struct {
	Meta Meta
	Rows []EntryExportRow
}

// entriesColumns 的列序与用户点名要的口径一致：批次紧跟在号码布之后。
// 号码布用 kindText：它是带前导零的字符串（"007"），任何数字格式都会把它吃掉。
var entriesColumns = []column{
	{"小项编码", 12, kindCenter},
	{"小项名", 18, kindText},
	{"组别", 14, kindText},
	{"单位编码", 12, kindCenter},
	{"单位名", 22, kindText},
	{"姓名", 16, kindText},
	{"证件号", 22, kindCenter},
	{"号码布", 10, kindText},
	{"批次", 8, kindCenter},
	{"性别", 8, kindCenter},
	{"年龄", 8, kindInt},
	{"状态", 12, kindCenter},
	{"备注", 20, kindText},
}

// ExportEntriesXLSX 导出报名名单到 dst。
func ExportEntriesXLSX(db *sql.DB, dst string, filter EntriesFilter, opts Options) error {
	wb, err := LoadEntriesWorkbook(db, filter, opts)
	if err != nil {
		return err
	}
	f, err := entriesFile(wb)
	if err != nil {
		return err
	}
	return saveWorkbook(f, dst)
}

// WriteEntriesXLSX 把报名名单写成 xlsx 流，供 HTTP 直接响应下载。
func WriteEntriesXLSX(w io.Writer, wb EntriesWorkbook) error {
	f, err := entriesFile(wb)
	if err != nil {
		return err
	}
	return f.Write(w)
}

func entriesFile(wb EntriesWorkbook) (*excelize.File, error) {
	return buildWorkbook(entriesSheet, func(f *excelize.File, st *styleSet) error {
		meta := wb.Meta.normalized()
		name := sanitizeSheetName(entriesSheet)
		if err := addSheet(f, name); err != nil {
			return err
		}
		return writeSheet(f, st, name, meta, sheetTitle(meta, entriesSheet), entriesColumns, entriesDataRows(wb.Rows))
	})
}

func entriesDataRows(rows []EntryExportRow) [][]any {
	out := make([][]any, 0, len(rows))
	for _, r := range rows {
		out = append(out, []any{
			r.EventCode, r.EventName, r.Category, r.TeamCode, r.TeamName,
			r.Name, r.IDCard, r.Bib, r.Heat, r.Gender, r.Age, r.Status, r.Remark,
		})
	}
	return out
}

// LoadEntriesWorkbook 读取报名名单；筛选条件为空表示导出全部。
//
// 读的是报名表本身（entries），不是成绩表：批次、号码布、状态都是报名侧的数据。
// 姓名取运动员姓名，团体行（athlete_id 为空）回落到成员名单，与分项成绩表同口径。
func LoadEntriesWorkbook(db *sql.DB, filter EntriesFilter, opts Options) (EntriesWorkbook, error) {
	if db == nil {
		return EntriesWorkbook{}, ErrNoDatabase
	}
	meta, _, err := resolveMeta(db, opts.Meta)
	if err != nil {
		return EntriesWorkbook{}, err
	}

	query := `
		SELECT COALESCE(ev.code, ''), COALESCE(ev.name, ''), COALESCE(c.name, ''),
		       COALESCE(t.code, ''), COALESCE(t.name, ''),
		       COALESCE(a.name, ''), COALESCE(en.member_names, ''),
		       COALESCE(a.id_card, ''), COALESCE(en.bib, ''), en.heat,
		       COALESCE(a.gender, ''), a.age, en.status, COALESCE(en.remark, '')
		FROM entries en
		JOIN events ev ON ev.id = en.event_id
		JOIN teams t ON t.id = en.team_id
		LEFT JOIN event_categories c ON c.id = en.category_id
		LEFT JOIN athletes a ON a.id = en.athlete_id`
	var (
		conds []string
		args  []any
	)
	for _, f := range []struct {
		column string
		value  int64
	}{
		{"en.event_id", filter.EventID},
		{"en.category_id", filter.CategoryID},
		{"en.team_id", filter.TeamID},
		{"en.heat", filter.Heat},
	} {
		if f.value != 0 {
			conds = append(conds, f.column+" = ?")
			args = append(args, f.value)
		}
	}
	if len(conds) > 0 {
		query += " WHERE " + strings.Join(conds, " AND ")
	}
	// 排序与录入页一致：按大项 / 小项 / 组别，组内先未分批再按批次，最后按单位。
	// 未分批（heat 为 NULL）的排最前，与「空值最小」的直觉一致。
	query += `
		ORDER BY ev.sort_order, ev.code, c.sort_order, c.id,
		         en.heat IS NOT NULL, en.heat, t.sort_order, t.code, en.id`

	rows, err := db.Query(query, args...)
	if err != nil {
		return EntriesWorkbook{}, fmt.Errorf("export: 读取报名名单: %w", err)
	}
	defer func() { _ = rows.Close() }()

	var out []EntryExportRow
	for rows.Next() {
		var (
			row         EntryExportRow
			memberJSON  string
			heat        sql.NullInt64
			age         sql.NullInt64
			athleteName string
		)
		if err := rows.Scan(&row.EventCode, &row.EventName, &row.Category, &row.TeamCode, &row.TeamName,
			&athleteName, &memberJSON, &row.IDCard, &row.Bib, &heat,
			&row.Gender, &age, &row.Status, &row.Remark); err != nil {
			return EntriesWorkbook{}, fmt.Errorf("export: 扫描报名名单: %w", err)
		}
		row.Name = participantName(athleteName, memberJSON)
		if heat.Valid {
			row.Heat = strconv.FormatInt(heat.Int64, 10)
		}
		if age.Valid {
			row.Age = int(age.Int64)
		} else {
			row.Age = ""
		}
		row.Status = entryExportStatusLabel(row.Status)
		out = append(out, row)
	}
	if err := rows.Err(); err != nil {
		return EntriesWorkbook{}, fmt.Errorf("export: 遍历报名名单: %w", err)
	}
	return EntriesWorkbook{Meta: meta, Rows: out}, nil
}

// entryExportStatusLabel 与录入页报名状态徽标同口径（registered 正常参赛 / scratched 已退赛 /
// dq 取消资格 / dns 未出场），导出件上的字与现场在界面上看到的一致。
func entryExportStatusLabel(status string) string {
	switch domain.EntryStatus(status) {
	case domain.EntryStatusRegistered, "":
		return "正常参赛"
	case domain.EntryStatusScratched:
		return "已退赛"
	case domain.EntryStatusDQ:
		return "取消资格"
	case domain.EntryStatusDNS:
		return "未出场"
	default:
		return status
	}
}