package skill

import (
	"context"
	"errors"

	"github.com/google/uuid"
	"go.uber.org/fx"
	"gorm.io/gorm"

	domainSkill "base/internal/domain/skill"
)

type repository struct {
	db *gorm.DB
}

// NewRepository creates a Repository for the skills catalog.
func NewRepository(lc fx.Lifecycle, db *gorm.DB) domainSkill.Repository {
	lc.Append(
		fx.Hook{
			OnStart: func(ctx context.Context) error { return nil },
			OnStop:  func(ctx context.Context) error { return nil },
		})
	return &repository{db: db}
}

func (r *repository) FindAll(ctx context.Context) ([]*domainSkill.Skill, error) {
	var models []SkillModel
	if err := r.db.WithContext(ctx).Order("name ASC").Find(&models).Error; err != nil {
		return nil, err
	}
	out := make([]*domainSkill.Skill, len(models))
	for i := range models {
		out[i] = &domainSkill.Skill{ID: models[i].ID, Name: models[i].Name}
	}
	return out, nil
}

func (r *repository) FindByID(ctx context.Context, id uuid.UUID) (*domainSkill.Skill, error) {
	var model SkillModel
	if err := r.db.WithContext(ctx).Where("id = ?", id).First(&model).Error; err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return nil, nil
		}
		return nil, err
	}
	return &domainSkill.Skill{ID: model.ID, Name: model.Name}, nil
}