package api

import (
	"time"

	"github.com/snip/backend/internal/domain"
)

// linkDTO is the JSON shape returned to the SPA. It intentionally matches the
// frontend's `ShortLink` type so the mock API is a drop-in swap. PinHash is
// never included.
type linkDTO struct {
	ID          string            `json:"id"`
	Code        string            `json:"code"`
	LongURL     string            `json:"longUrl"`
	Mode        string            `json:"mode"`
	HasPin      bool              `json:"hasPin"`
	CreatedAt   string            `json:"createdAt"`
	TotalClicks int64             `json:"totalClicks"`
	Last7Days   []domain.DayCount `json:"last7Days"`
	Owned       bool              `json:"owned"`
}

func toDTO(l *domain.Link) linkDTO {
	week := l.Last7Days
	if week == nil {
		week = []domain.DayCount{}
	}
	return linkDTO{
		ID:          l.ID,
		Code:        l.Code,
		LongURL:     l.LongURL,
		Mode:        string(l.Mode),
		HasPin:      l.HasPin,
		CreatedAt:   l.CreatedAt.Format(time.RFC3339),
		TotalClicks: l.TotalClicks,
		Last7Days:   week,
		Owned:       l.OwnerID != "",
	}
}

// listResponse is the paginated link listing returned to the dashboard.
type listResponse struct {
	Items    []linkDTO `json:"items"`
	Total    int       `json:"total"`
	Page     int       `json:"page"`
	PageSize int       `json:"pageSize"`
}

type createReq struct {
	LongURL     string `json:"longUrl"`
	Mode        string `json:"mode"`
	CustomAlias string `json:"customAlias"`
	Pin         string `json:"pin"`
}

type updateReq struct {
	LongURL string `json:"longUrl"`
}

type pinReq struct {
	Pin string `json:"pin"`
}

type userDTO struct {
	ID    string `json:"id"`
	Email string `json:"email"`
	Name  string `json:"name"`
}