package common

import "fmt"

// Missing avatars must not become a successful empty roster: scene actors and
// the Client's lineup member array would then disagree during login.
func ValidateAvatarRoster(avatars map[uint32]*AvatarJson) error {
	if len(avatars) == 0 {
		return fmt.Errorf("player data is missing a non-empty avatars object")
	}
	for id, avatar := range avatars {
		if id == 0 || avatar == nil || avatar.AvatarID != id {
			return fmt.Errorf("invalid avatar record for key %d", id)
		}
	}
	return nil
}

func ValidateAdventureLineup(avatars map[uint32]*AvatarJson, lineup map[uint32]uint32) error {
	if err := ValidateAvatarRoster(avatars); err != nil {
		return err
	}
	rules, err := LoadTeamPresetRules()
	if err != nil {
		return err
	}
	members := 0
	for slot, id := range lineup {
		if id == 0 {
			continue
		}
		if slot >= rules.MaxMembers {
			return fmt.Errorf("lineup slot %d exceeds captured member limit", slot)
		}
		if avatars[id] == nil {
			return fmt.Errorf("lineup slot %d references missing avatar %d", slot, id)
		}
		members++
	}
	if members == 0 {
		return fmt.Errorf("active adventure lineup has no valid members")
	}
	return nil
}