package application

import (
	"context"
	"fmt"
)

type SystemRepository interface {
	DatabaseHealth(context.Context) error
	OwnerExists(context.Context) (bool, error)
}

type SetupStatus struct {
	Initialized bool   `json:"initialized"`
	Phase       string `json:"phase"`
	Version     string `json:"version"`
}

type SystemService struct {
	repository SystemRepository
	version    string
}

func NewSystemService(repository SystemRepository, version string) *SystemService {
	return &SystemService{repository: repository, version: version}
}

func (s *SystemService) Readiness(ctx context.Context) error {
	if err := s.repository.DatabaseHealth(ctx); err != nil {
		return fmt.Errorf("database health: %w", err)
	}
	return nil
}

func (s *SystemService) SetupStatus(ctx context.Context) (SetupStatus, error) {
	initialized, err := s.repository.OwnerExists(ctx)
	if err != nil {
		return SetupStatus{}, fmt.Errorf("read owner setup state: %w", err)
	}
	return SetupStatus{Initialized: initialized, Phase: "phase-1", Version: s.version}, nil
}