package db

import (
	"context"

	"github.com/pkg/errors"
	"github.com/uptrace/bun"
)

type League struct {
	bun.BaseModel `bun:"table:leagues,alias:l"`

	ID          int    `bun:"id,pk,autoincrement" json:"id"`
	Name        string `bun:"name,unique,notnull" json:"name"`
	ShortName   string `bun:"short_name,unique,notnull" json:"short_name"`
	Description string `bun:"description" json:"description"`

	Seasons []Season `bun:"m2m:season_leagues,join:League=Season" json:"-"`
	Teams   []Team   `bun:"m2m:team_participations,join:League=Team" json:"-"`
}

func GetLeagues(ctx context.Context, tx bun.Tx) ([]*League, error) {
	return GetList[League](tx).Relation("Seasons").GetAll(ctx)
}

func GetLeague(ctx context.Context, tx bun.Tx, shortname string) (*League, error) {
	if shortname == "" {
		return nil, errors.New("shortname cannot be empty")
	}
	return GetByField[League](tx, "short_name", shortname).Relation("Seasons").Get(ctx)
}

func NewLeague(ctx context.Context, tx bun.Tx, name, shortname, description string, audit *AuditMeta) (*League, error) {
	league := &League{
		Name:        name,
		ShortName:   shortname,
		Description: description,
	}
	err := Insert(tx, league).
		WithAudit(audit, nil).Exec(ctx)
	if err != nil {
		return nil, errors.Wrap(err, "db.Insert")
	}
	return league, nil
}