package logic

import (
	"context"

	"spark-server/internal/module/friend/entity"
	"spark-server/internal/pkg/errs"
)

type RequestView struct {
	ID        int64         `json:"id"`
	From      UserCard      `json:"from"`
	Reason    string        `json:"reason"`
	Source    entity.Source `json:"source"`
	CreatedAt int64         `json:"created_at"`
	UpdatedAt int64         `json:"updated_at"`
}

type RequestList struct {
	Items []*RequestView `json:"items"`
}

func (s *Service) ListRequests(ctx context.Context, userID int64, limit int) (*RequestList, error) {
	if !s.ready() || userID <= 0 {
		return nil, errs.ErrUnauthorized
	}
	rows, err := s.repo.ListIncoming(ctx, userID, entity.RequestPending, entity.ClampLimit(limit))
	if err != nil {
		return nil, err
	}
	items := make([]*RequestView, 0, len(rows))
	for _, req := range rows {
		from, err := s.users.Get(ctx, req.FromUser)
		if err != nil {
			continue
		}
		items = append(items, &RequestView{
			ID:        req.ID,
			From:      cardOf(from),
			Reason:    req.Reason,
			Source:    req.Source,
			CreatedAt: entity.UnixMS(req.CreatedAt),
			UpdatedAt: entity.UnixMS(req.UpdatedAt),
		})
	}
	return &RequestList{Items: items}, nil
}