初步实现鉴权

Co-authored-by: Copilot <copilot@github.com>

internal/audit/logger.go

@@ -0,0 +1,51 @@
+package audit
+
+import (
+	"context"
+	"database/sql"
+	"strings"
+	"time"
+
+	"gitea.gangary.cn/gary/Hugs-Proxy/internal/db"
+)
+
+type Entry struct {
+	RequestIP      string
+	UserID         int64
+	HasUser        bool
+	TokenID        int64
+	HasToken       bool
+	OriginalURL    string
+	HTTPStatus     int
+	Success        bool
+	ErrorReason    string
+	CountAsSuccess bool
+	OccurredAt     time.Time
+}
+
+type Logger struct {
+	store *db.Store
+}
+
+func NewLogger(store *db.Store) *Logger {
+	return &Logger{store: store}
+}
+
+func (l *Logger) Log(ctx context.Context, entry Entry) error {
+	usage := db.UsageEntry{
+		RequestIP:   strings.TrimSpace(entry.RequestIP),
+		OriginalURL: strings.TrimSpace(entry.OriginalURL),
+		HTTPStatus:  entry.HTTPStatus,
+		Success:     entry.Success,
+		ErrorReason: strings.TrimSpace(entry.ErrorReason),
+		OccurredAt:  entry.OccurredAt,
+	}
+	if entry.HasUser {
+		usage.UserID = sql.NullInt64{Int64: entry.UserID, Valid: true}
+	}
+	if entry.HasToken {
+		usage.TokenID = sql.NullInt64{Int64: entry.TokenID, Valid: true}
+	}
+
+	return l.store.RecordUsageAndMaybeIncrement(ctx, usage, entry.CountAsSuccess)
+}