package domain

import (
	"fmt"
	"time"
)

type TribeChange struct {
	ID         int64
	PlayerID   int64
	NewTribeID int64
	OldTribeID int64
	ServerKey  string
	CreatedAt  time.Time
}

type TribeChangeWithRelations struct {
	TribeChange

	Player   PlayerMeta
	NewTribe NullTribeMeta
	OldTribe NullTribeMeta
}

type CreateTribeChangeParams struct {
	PlayerID   int64
	NewTribeID int64
	OldTribeID int64
	ServerKey  string
}

type TribeChangeSortBy uint8

const (
	TribeChangeSortByID TribeChangeSortBy = iota
	TribeChangeSortByCreatedAt
)

func newTribeChangeSortBy(s string) (TribeChangeSortBy, error) {
	switch s {
	case "id":
		return TribeChangeSortByID, nil
	case "createdAt":
		return TribeChangeSortByCreatedAt, nil
	}
	return 0, fmt.Errorf("%w: \"%s\"", ErrUnsupportedSortBy, s)
}

type TribeChangeSort struct {
	By        TribeChangeSortBy
	Direction SortDirection
}

func NewTribeChangeSort(by, dir string) (TribeChangeSort, error) {
	convBy, err := newTribeChangeSortBy(by)
	if err != nil {
		return TribeChangeSort{}, err
	}

	convDir, err := newSortDirection(dir)
	if err != nil {
		return TribeChangeSort{}, err
	}

	return TribeChangeSort{
		By:        convBy,
		Direction: convDir,
	}, nil
}

type ListTribeChangesParams struct {
	ServerKeys []string
	PlayerIDs  []int64
	// TribeIDs filters out tribe changes whose NewTribeID OR OldTribeID isn't in the provided slice.
	TribeIDs   []int64
	Pagination Pagination
	Sort       []TribeChangeSort
}