package renders

import (
	"app/shelfly/internal/debridlink"
	"app/shelfly/internal/download"
	"app/shelfly/internal/models"
	"context"
	"encoding/json"
	"log"
	"net/http"
	"strconv"
	"text/template"
	"time"

	"gorm.io/gorm"
)


func Login(w http.ResponseWriter, r *http.Request){
	renderTemplate(w,"login",nil)
}
func Dashboard(db *gorm.DB)http.HandlerFunc {
    return func(w http.ResponseWriter, r *http.Request) {
    var paths []models.PathDownload
    if err := db.Find(&paths).Error; err != nil {
        http.Error(w, `{"error": "Failed to retrieve paths"}`, http.StatusInternalServerError)
        return
    }
    data := map[string]interface{}{
        "paths": paths,
    }
    
	renderTemplate(w,"dashboard",data)
}

}
func MenuLibrary(db *gorm.DB) http.HandlerFunc {
    return func(w http.ResponseWriter, r *http.Request) {
        var currentPaths []models.PathDownload
        if err := db.Find(&currentPaths).Error; err != nil {
            http.Error(w, `{"error": "Failed to retrieve paths"}`, http.StatusInternalServerError)
            return
        }

        // Récupérer l'ancienne version des paths (si existante)
        lastUpdate := r.Header.Get("HX-Current-Paths")
        var previousPaths []models.PathDownload
        if lastUpdate != "" {
            json.Unmarshal([]byte(lastUpdate), &previousPaths)
        }

        // Convertir en JSON pour comparaison
        currentJSON, _ := json.Marshal(currentPaths)
        previousJSON, _ := json.Marshal(previousPaths)

        // Vérifier si les paths ont changé
        pathsChanged := string(currentJSON) != string(previousJSON)

        data := map[string]interface{}{
            "paths": currentPaths,
        }

        // Si HTMX request, ajouter les headers appropriés
        if r.Header.Get("HX-Request") == "true" {
            if pathsChanged {
                w.Header().Set("HX-Trigger", "pathsUpdated")
            }
            w.Header().Set("HX-Current-Paths", string(currentJSON))
        }

        renderPartial(w, "dashboard", data)
    }

}
func Settings(w http.ResponseWriter, r *http.Request) {
    data := map[string]interface{}{
        "Title": "Settings Page",
        "Options": []string{"Option 1", "Option 2", "Option 3"},
    }
    renderPartial(w, "settings", data)
}


func Library(w http.ResponseWriter, r *http.Request) {
    renderPartial(w, "library",nil)
}

func GoDownload(w http.ResponseWriter, r *http.Request) {
    renderPartial(w, "godownloader_download",nil)
}
func GoDownloadLinkCollectors(w http.ResponseWriter, r *http.Request) {
    renderPartial(w, "godownloader_linkcollectors",nil)
}
func GetDebridClient(db *gorm.DB) *debridlink.Client {
	return debridlink.NewClient(db)
}

func GoDownloadSettingDelete(db *gorm.DB) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		ctx := context.Background()
		DebridClient := GetDebridClient(db)

		idStr := r.URL.Query().Get("id")
		if idStr == "" {
			http.Error(w, "ID manquant", http.StatusBadRequest)
			return
		}

		idUint, err := strconv.ParseUint(idStr, 10, 64)
		if err != nil {
			http.Error(w, "ID invalide", http.StatusBadRequest)
			return
		}

		if err := DebridClient.DeleteDebridAccount(ctx, uint(idUint)); err != nil {
			http.Error(w, "Erreur lors de la suppression", http.StatusInternalServerError)
			return
		}

		http.Redirect(w, r, "/godownloader/settings", http.StatusSeeOther)
	}
}

func GoDownloadSettingToggleActive(db *gorm.DB) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		ctx := context.Background()
		DebridClient := debridlink.NewClient(db)

		idStr := r.URL.Query().Get("id")
		idUint, err := strconv.ParseUint(idStr, 10, 32)
		if err != nil {
			http.Error(w, "ID invalide", http.StatusBadRequest)
			return
		}

		err = DebridClient.ToggleActiveStatus(ctx, uint(idUint))
		if err != nil {
			log.Println("Erreur lors du toggle:", err)
			http.Error(w, "Échec de mise à jour", http.StatusInternalServerError)
			return
		}

		// Récupérer la liste mise à jour
		accounts, err := DebridClient.ListDebridAccounts(ctx)
		if err != nil {
			http.Error(w, "Erreur lors du chargement des comptes", http.StatusInternalServerError)
			return
		}

		// HTMX ou page normale
		if r.Header.Get("HX-Request") == "true" {
			renderPartial(w, "partials/accounts_table", map[string]interface{}{
				"accounts": accounts,
			})
		} else {
			renderPartial(w, "godownloader_setting", map[string]interface{}{
				"accounts": accounts,
			})
		}
	}
}
func GoDownloadSetting(db *gorm.DB) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		ctx := r.Context()
		client := debridlink.NewClient(db)

		switch r.Method {
		case http.MethodPost:
			if err := r.ParseForm(); err != nil {
				http.Error(w, "Form invalide", http.StatusBadRequest)
				return
			}

			username := r.FormValue("username")
			password := r.FormValue("password")

			deviceResp, err := client.RequestDeviceCodeWithCredentials(ctx, username, password)
			if err != nil {
				log.Println("[OAuth2] Erreur device_code:", err)
				http.Error(w, "Erreur OAuth: "+err.Error(), http.StatusInternalServerError)
				return
			}

			// Affiche le code + URL dans #auth-status
			renderPartial(w, "oauth_device_code", map[string]any{
				"code": deviceResp.UserCode,
				"url":  deviceResp.VerificationURL,
			})

			// Polling async
			go func() {
				tokens, err := client.PollDeviceToken(context.Background(), deviceResp.DeviceCode, deviceResp.Interval)
				if err != nil {
					log.Println("[OAuth2] Polling échoué:", err)
					return
				}

				account := &debridlink.DebridAccount{
					Host:         "debrid-link.com",
					Username:     username,
					Password:     password,
					IsActive:     true,
					AccessToken:  tokens.AccessToken,
					RefreshToken: tokens.RefreshToken,
					ExpiresAt:    time.Now().Add(time.Duration(tokens.ExpiresIn) * time.Second),
				}

				if err := db.Create(account).Error; err != nil {
					log.Println("[DB] Sauvegarde échouée:", err)
					return
				}

				log.Println("[OAuth2] Compte sauvegardé")
			}()

		case http.MethodGet:
			accounts, _ := client.ListDebridAccounts(ctx)
			renderPartial(w, "godownloader_setting", map[string]any{
				"accounts": accounts,
			})
		}
	}
}
func GoDownloadPartialTable(db *gorm.DB) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		ctx := r.Context()
		client := debridlink.NewClient(db)
		accounts, _ := client.ListDebridAccounts(ctx)
			renderPartial(w, "accounts_table", map[string]any{
				"accounts": accounts,
			})
	}}
func PollStatusHandler(db *gorm.DB) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		var count int64
		db.Model(&debridlink.DebridAccount{}).Where("is_active = ?", true).Count(&count)

		w.Header().Set("Content-Type", "application/json")
		json.NewEncoder(w).Encode(map[string]bool{
			"success": count > 0,
		})
	}
}
func GoDownload2(db *gorm.DB) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		jobs := download.ListJobs()
		var paths []models.PathDownload
		db.Find(&paths)

		data := map[string]interface{}{
			"jobs":  jobs,
			"paths": paths,
		}

		renderTemplate(w, "godownloader_download", data)
	}
}

func HandleAddJob(db *gorm.DB) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		r.ParseForm()
		link := r.FormValue("link")
		pathIDStr := r.FormValue("path_id")

		parsedID, err := strconv.Atoi(pathIDStr)
		if err != nil {
			http.Error(w, "Chemin invalide", http.StatusBadRequest)
			return
		}

		_ = download.AddJob(link, uint(parsedID), db)

		// Mise à jour de la vue partielle du tableau
		jobs := download.ListJobs()
		data := map[string]interface{}{
			"jobs": jobs,
		}

		renderPartial(w, "downloads_table", data)
	}
}
func HandleListJobsPartial(db *gorm.DB) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		jobs := download.ListJobs()
		data := map[string]interface{}{
			"jobs": jobs,
		}
		renderPartial(w, "downloads_table", data)
	}
}

// func GoDownloadSetting(db *gorm.DB) http.HandlerFunc {
// 	return func(w http.ResponseWriter, r *http.Request) {
// 		ctx := r.Context()

// 		// Initialise le client avec .env (client_id, secret)
// 		DebridClient := debridlink.NewClient(db)

// 		switch r.Method {
// 		case http.MethodPost:
// 			if err := r.ParseForm(); err != nil {
// 				http.Error(w, "Formulaire invalide", http.StatusBadRequest)
// 				return
// 			}

// 			host := r.FormValue("host")
// 			username := r.FormValue("username")
// 			password := r.FormValue("password")
// 			isActive := r.FormValue("is_active") == "on"

// 			// Authentification via Password Grant
// 			tokens, err := DebridClient.PasswordGrant(ctx, username, password)
// 			if err != nil {
// 				log.Println("[OAuth2] Erreur:", err)
// 				http.Error(w, "Authentification échouée", http.StatusUnauthorized)
// 				return
// 			}

// 			// Création du compte à enregistrer
// 			account := &debridlink.DebridAccount{
// 				Host:         host,
// 				Username:     username,
// 				Password:     password,
// 				IsActive:     isActive,
// 				AccessToken:  tokens.AccessToken,
// 				RefreshToken: tokens.RefreshToken,
// 				ExpiresAt:    time.Now().Add(time.Duration(tokens.ExpiresIn) * time.Second),
// 			}

// 			if err := db.Save(account).Error; err != nil {
// 				log.Println("[DB] Sauvegarde échouée:", err)
// 				http.Error(w, "Erreur DB", http.StatusInternalServerError)
// 				return
// 			}

// 			var accounts []debridlink.DebridAccount
// 			db.Order("id desc").Find(&accounts)

// 			if r.Header.Get("HX-Request") == "true" {
// 				renderPartial(w, "partials/accounts_table", map[string]interface{}{
// 					"accounts": accounts,
// 				})
// 				return
// 			}

// 			renderPartial(w, "godownloader_setting", map[string]interface{}{
// 				"accounts": accounts,
// 			})

// 		case http.MethodGet:
// 			var accounts []debridlink.DebridAccount
// 			db.Order("id desc").Find(&accounts)

// 			renderPartial(w, "godownloader_setting", map[string]interface{}{
// 				"accounts": accounts,
// 			})
// 		}
// 	}
// }





func renderPartial(w http.ResponseWriter, templ string, data map[string]interface{}) {
    t, err := template.ParseFiles("./templates/" + templ + ".pages.tmpl")
    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
        return
    }

    err = t.Execute(w, data)
    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
    }
}



func renderTemplate(w http.ResponseWriter, templ string, data map[string]interface{}) {
    t, err := template.ParseFiles(
        "./templates/head.pages.tmpl",      // Template inclus
        "./templates/" + templ + ".pages.tmpl", // Template principal
    )

    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
        return
    }

    // Exécutez explicitement le template principal
    err = t.ExecuteTemplate(w, templ+".pages.tmpl", data)

    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
    }
}