AskaEth
09fba77f87
- 只翻注释/文档字符串：剥离注释后代码行逐字节不变（机械校验只剩 4 条行尾注释的翻译，代码前缀全等） - 交叉引用（design/16 §4.6、D4/B3、0010 迁移文件名）逐字保留 - 保留未译技术词：DDL/rowid/LIKE/LEFT JOIN/DTO/rune/WS/actor 及全部标识符与表名 - 顺带副作用：store.go、session_persona_test.go 由注释文字改变而变得 gofmt 干净（未运行 gofmt -w）
45 lines
1.7 KiB
Go
45 lines
1.7 KiB
Go
package history
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import (
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"context"
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"fmt"
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)
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// ListAfter 按最旧优先返回 sessionID 中严格新于 after（created_at > after）的
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// 至多 limit 条消息，用于前向增量追赶：重连的客户端传入自己已见过的最新
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// createdAt，只拉取错过的部分，无论有多少条（"before" 游标只能向后走，无法
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// 恢复大于一页的空洞）。platform 非空时把该页进一步限制为携带该来源平台的
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// 消息，与 List 完全一致。rowid 打破 created_at 的并列，使同一毫秒写入的
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// 消息保持插入顺序。返回切片非 nil；limit 钳制到 [1, maxPageLimit]。
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func (s *Store) ListAfter(ctx context.Context, sessionID string, after int64, limit int, platform string) ([]Message, error) {
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limit = clampLimit(limit)
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query := `SELECT id, session_id, role, content, mode, mood, image, thinking, platform, device_id, sender_name, adapter_id, persona_id, created_at
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FROM chat_messages WHERE session_id = ? AND created_at > ?`
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args := []any{sessionID, after}
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if platform != "" {
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query += ` AND platform = ?`
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args = append(args, platform)
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}
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query += ` ORDER BY created_at ASC, rowid ASC LIMIT ?`
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args = append(args, limit)
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rows, err := s.db.QueryContext(ctx, query, args...)
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if err != nil {
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return nil, fmt.Errorf("history: list after %s: %w", sessionID, err)
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}
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defer func() { _ = rows.Close() }()
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msgs := make([]Message, 0)
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for rows.Next() {
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m, err := scanMessage(rows)
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if err != nil {
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return nil, fmt.Errorf("history: scan list after %s: %w", sessionID, err)
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}
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msgs = append(msgs, m)
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}
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if err := rows.Err(); err != nil {
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return nil, fmt.Errorf("history: iterate list after %s: %w", sessionID, err)
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}
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return msgs, nil
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}
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