package utils

import (
	"errors"
	"fmt"
	"log"
	"os"
	"path/filepath"

	"gorm.io/gorm"

	"canguidev/shelfy/internal/models"
)

func CreateDefaultFolder(db *gorm.DB) {
	type item struct {
		Name string
	}
	defs := []item{
		{Name: "Film"},
		{Name: "Série"},
		{Name: "Manga"},
		{Name: "Magazine"},
	}

	for _, it := range defs {
		path := filepath.Join("upload", it.Name)

		// 1) Dossier : on s'assure qu'il existe
		if err := os.MkdirAll(path, 0o755); err != nil {
			log.Printf("[FOLDER] Erreur création '%s' : %v", path, err)
			continue
		}

		// 2) Base : chercher une ligne existante par path OU path_name
		var existing models.PathDownload
		err := db.Where("path = ? OR path_name = ?", path, it.Name).First(&existing).Error

		switch {
		case errors.Is(err, gorm.ErrRecordNotFound):
			// 2a) Pas trouvé -> on crée
			row := models.PathDownload{
				Path:     path,
				PathName: it.Name,
			}
			if err := db.Create(&row).Error; err != nil {
				log.Printf("[DB] Échec création PathDownload(%s, %s) : %v", path, it.Name, err)
			} else {
				log.Printf("[DB] Ligne créée PathDownload id=%v (%s | %s)", row.ID, row.PathName, row.Path)
			}

		case err != nil:
			// 2b) Erreur DB
			log.Printf("[DB] Erreur recherche PathDownload(%s | %s) : %v", path, it.Name, err)

		default:
			// 2c) Trouvé -> on normalise si besoin
			updates := map[string]interface{}{}
			if existing.Path != path {
				updates["path"] = path
			}
			if existing.PathName != it.Name {
				updates["path_name"] = it.Name
			}
			if len(updates) > 0 {
				if err := db.Model(&existing).Updates(updates).Error; err != nil {
					log.Printf("[DB] Échec mise à jour PathDownload id=%v : %v", existing.ID, err)
				} else {
					log.Printf("[DB] Mis à jour PathDownload id=%v -> %#v", existing.ID, updates)
				}
			} else {
				log.Printf("[DB] OK PathDownload id=%v déjà synchro (%s | %s)", existing.ID, existing.PathName, existing.Path)
			}
		}

		// 3) (Facultatif) log côté fichiers
		if fi, err := os.Stat(path); err == nil && fi.IsDir() {
			fmt.Printf("[FOLDER] OK : %s\n", path)
		}
	}
}