package routers

import (
	"encoding/json"
	"fmt"
	"image/png"
	"net/http"
	"os"
	"path"
	"recipe-manager/contracts"
	"recipe-manager/data"
	"recipe-manager/enums/permissions"
	"recipe-manager/helpers"
	"recipe-manager/models"
	"recipe-manager/services/logger"
	"recipe-manager/services/recipe"
	"recipe-manager/services/sheet"
	"strconv"
	"strings"
	"sync"
	"time"

	"github.com/go-chi/chi/v5"
	"github.com/pkg/errors"
	"go.uber.org/zap"
)

type RecipeRouter struct {
	data          *data.Data
	sheetService  sheet.SheetService
	recipeService recipe.RecipeService
	taoLogger     *logger.TaoLogger
	cache_db      *data.RedisCli
}

var (
	binaryApiLock sync.Mutex
	updateMutex   = sync.Mutex{}
)

func NewRecipeRouter(data *data.Data, recipeService recipe.RecipeService, sheetService sheet.SheetService, taoLogger *logger.TaoLogger, cache *data.RedisCli) *RecipeRouter {
	return &RecipeRouter{
		data,
		sheetService,
		recipeService,
		taoLogger,
		cache,
	}
}

func (rr *RecipeRouter) Route(r chi.Router) {
	r.Route("/recipes", func(r chi.Router) {
		r.Get("/dashboard", rr.dashBoard)

		r.Get("/{country}/{filename}/all", func(w http.ResponseWriter, r *http.Request) {
			w.Header().Add("Content-Type", "application/json")

			country := chi.URLParam(r, "country")
			filename := chi.URLParam(r, "filename")

			rr.taoLogger.Log.Debug("RecipeRouter.GetAll", zap.Any("country", country), zap.Any("filename", filename))

			result, err := rr.recipeService.GetAllRecipe(&contracts.GetAllRecipeRequest{
				Country:  country,
				Filename: filename,
			})

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

			if err := json.NewEncoder(w).Encode(result); err != nil {
				rr.taoLogger.Log.Error("RecipeRouter.GetAll", zap.Error(err))
				http.Error(w, "Internal Error", http.StatusInternalServerError)
				return
			}
		})

		r.Get("/overview", rr.overview)

		r.Get("/{product_code}", rr.getRecipeByProductCode)

		r.Get("/{product_code}/mat", rr.getRecipeMatByProductCode)

		r.Get("/{country}/{filename}/toppings", rr.getToppings)

		r.Get("/{country}/{filename}/{product_code}/toppings", rr.getToppingsOfRecipe)

		r.Get("/{country}/{filename}/{product_code}/submenus", rr.getSubmenusOfRecipe)

		// fetch raw recipe json
		r.Get("/{country}/{filename}/{product_code}/raw_full", rr.getRawRecipeOfProductCode)

		// fetch image
		r.Get("/{country}/{filename}/{product_code}/image", rr.getImageOfProductCode)

		r.Get("/{country}/{filename}/json", rr.getRecipeJson)

		r.Post("/edit/{country}/{filename}", rr.updateRecipe)

		r.Get("/saved/{country}/{filename_version_only}", rr.getSavedRecipes)

		r.Get("/patch/get/{country}/{filename}", rr.getSavedAsPatches)

		r.Get("/departments", func(w http.ResponseWriter, r *http.Request) {
			w.Header().Add("Content-Type", "application/json")

			// return departments that user can access

			u := r.Context().Value("user").(*models.User)
			var result []string

			if u.Permissions.IsHavePermission(permissions.ThaiPermission) {
				result = append(result, "tha")
			}

			if u.Permissions.IsHavePermission(permissions.MalayPermission) {
				result = append(result, "mys")
			}

			if u.Permissions.IsHavePermission(permissions.AusPermission) {
				result = append(result, "aus")
			}

			if u.Permissions.IsHavePermission(permissions.Alpha3Permission) {
				result = append(result, "alpha")
			}

			if err := json.NewEncoder(w).Encode(&contracts.Response[[]string]{
				Result: result,
			}); err != nil {
				rr.taoLogger.Log.Error("RecipeRouter.GetDepartments", zap.Error(err))
				http.Error(w, "Internal Error", http.StatusInternalServerError)
				return
			}
		})

		r.Get("/countries", func(w http.ResponseWriter, r *http.Request) {
			w.Header().Add("Content-Type", "application/json")
			// get key from map
			var keys []string
			for k := range rr.data.AllRecipeFiles {
				countryName, err := rr.data.GetCountryNameByID(k)
				if err != nil {
					continue
				}
				keys = append(keys, countryName)
			}
			if err := json.NewEncoder(w).Encode(keys); err != nil {
				rr.taoLogger.Log.Error("RecipeRouter.GetCountryRecipe", zap.Error(err))
				http.Error(w, "Internal Error", http.StatusInternalServerError)
				return
			}
		})

		r.Post("/merge", rr.doMergeJson)

		r.Get("/{country}/versions", func(w http.ResponseWriter, r *http.Request) {
			w.Header().Add("Content-Type", "application/json")

			countryName := chi.URLParam(r, "country")
			countryID, err := rr.data.GetCountryIDByName(countryName)
			if err != nil {
				http.Error(w, fmt.Sprintf("Country Name: %s not found!!!", countryName), http.StatusNotFound)
				return
			}
			var files []string
			for _, v := range rr.data.AllRecipeFiles[countryID] {
				files = append(files, v.Name)
			}

			if err := json.NewEncoder(w).Encode(files); err != nil {
				rr.taoLogger.Log.Error("RecipeRouter.GetVersionsCountryRecipe", zap.Error(err))
				http.Error(w, "Internal Error", http.StatusInternalServerError)
				return
			}
		})

		r.Get("/test/sheet", func(w http.ResponseWriter, r *http.Request) {
			result := rr.sheetService.GetSheet(r.Context(), "1rSUKcc5POR1KeZFGoeAZIoVoI7LPGztBhPw5Z_ConDE")

			var mapResult []map[string]string

			for _, v := range result {
				mapResult = append(mapResult, map[string]string{
					"productCode":      v[0].(string),
					"name":             v[1].(string),
					"otherName":        v[2].(string),
					"description":      v[3].(string),
					"otherDescription": v[4].(string),
					"picture":          v[5].(string),
				})
			}
			if err := json.NewEncoder(w).Encode(mapResult); err != nil {
				rr.taoLogger.Log.Error("RecipeRouter.TestSheet", zap.Error(err))
				http.Error(w, "Internal Error", http.StatusInternalServerError)
				return
			}
		})
	})
}

// ====================== Handler =================================

func (rr *RecipeRouter) dashBoard(w http.ResponseWriter, r *http.Request) {
	w.Header().Add("Content-Type", "application/json")

	country := r.URL.Query().Get("country")
	filename := r.URL.Query().Get("filename")

	rr.taoLogger.Log.Debug("RecipeRouter.Dashboard", zap.Any("country", country), zap.Any("filename", filename))

	result, err := rr.recipeService.GetRecipeDashboard(&contracts.RecipeDashboardRequest{
		Country:  country,
		Filename: filename,
	})

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

	if err := json.NewEncoder(w).Encode(result); err != nil {
		rr.taoLogger.Log.Error("RecipeRouter.Dashboard", zap.Error(err))
		http.Error(w, "Internal Error", http.StatusInternalServerError)
		return
	}
}

func (rr *RecipeRouter) overview(w http.ResponseWriter, r *http.Request) {
	w.Header().Add("Content-Type", "application/json")
	var take, offset uint64 = 10, 0
	if newOffset, err := strconv.ParseUint(r.URL.Query().Get("offset"), 10, 64); err == nil {
		offset = newOffset
	}

	if newTake, err := strconv.ParseUint(r.URL.Query().Get("take"), 10, 64); err == nil {
		take = newTake
	}

	country := r.URL.Query().Get("country")
	filename := r.URL.Query().Get("filename")
	materialIds := r.URL.Query().Get("materialIds")

	rr.taoLogger.Log.Debug("RecipeRouter.Overview", zap.Any("take", take), zap.Any("offset", offset), zap.Any("country", country), zap.Any("filename", filename), zap.Any("materialIds", materialIds))

	var materialIdsUint []int
	for _, v := range strings.Split(materialIds, ",") {
		materialIdUint, err := strconv.ParseUint(v, 10, 64)
		if err != nil || materialIdUint == 0 {
			continue
		}
		materialIdsUint = append(materialIdsUint, int(materialIdUint))
	}

	result, err := rr.recipeService.GetRecipeOverview(&contracts.RecipeOverviewRequest{
		Take:     int(take),
		Skip:     int(offset),
		Search:   r.URL.Query().Get("search"),
		Country:  country,
		Filename: filename,
		MatIds:   materialIdsUint,
	})

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

	if err := json.NewEncoder(w).Encode(result); err != nil {
		rr.taoLogger.Log.Error("RecipeRouter.Overview", zap.Error(err))
		http.Error(w, "Internal Error", http.StatusInternalServerError)
		return
	}
}

func (rr *RecipeRouter) getRecipeByProductCode(w http.ResponseWriter, r *http.Request) {
	w.Header().Add("Content-Type", "application/json")
	productCode := chi.URLParam(r, "product_code")
	fileName := r.URL.Query().Get("filename")
	country := r.URL.Query().Get("country")

	// recipe := rr.data.GetRecipe01()
	// recipeMetaData := rr.sheetService.GetSheet(r.Context(), "1rSUKcc5POR1KeZFGoeAZIoVoI7LPGztBhPw5Z_ConDE")

	// var recipeResult *models.Recipe01
	// recipeMetaDataResult := map[string]string{}

	// for _, v := range recipe {
	// 	if v.ProductCode == productCode {
	// 		recipeResult = &v
	// 		break
	// 	}
	// }

	// for _, v := range recipeMetaData {
	// 	if v[0].(string) == productCode {
	// 		recipeMetaDataResult = map[string]string{
	// 			"productCode":      v[0].(string),
	// 			"name":             v[1].(string),
	// 			"otherName":        v[2].(string),
	// 			"description":      v[3].(string),
	// 			"otherDescription": v[4].(string),
	// 			"picture":          v[5].(string),
	// 		}
	// 		break
	// 	}
	// }

	// if recipeResult == nil {
	// 	http.Error(w, "Not Found", http.StatusNotFound)
	// 	return
	// }

	// json.NewEncoder(w).Encode(map[string]interface{}{
	// 	"recipe":         recipeResult,
	// 	"recipeMetaData": recipeMetaDataResult,
	// })

	result, err := rr.recipeService.GetRecipeDetail(&contracts.RecipeDetailRequest{
		Filename:    fileName,
		Country:     country,
		ProductCode: productCode,
	})

	if err != nil {
		rr.taoLogger.Log.Error("RecipeRouter.GetRecipeByProductCode", zap.Error(err))
		http.Error(w, fmt.Sprintf("Recipe file: %s with productCode: %s not found", fileName, productCode), http.StatusNotFound)
		return
	}

	if err := json.NewEncoder(w).Encode(result); err != nil {
		rr.taoLogger.Log.Error("RecipeRouter.GetRecipeByProductCode", zap.Error(err))
		http.Error(w, "Internal Error", http.StatusInternalServerError)
		return
	}
}

func (rr *RecipeRouter) getRecipeMatByProductCode(w http.ResponseWriter, r *http.Request) {
	w.Header().Add("Content-Type", "application/json")
	productCode := chi.URLParam(r, "product_code")
	fileName := r.URL.Query().Get("filename")
	country := r.URL.Query().Get("country")

	result, err := rr.recipeService.GetRecipeDetailMat(&contracts.RecipeDetailRequest{
		Filename:    fileName,
		Country:     country,
		ProductCode: productCode,
	})

	if err != nil {
		rr.taoLogger.Log.Error("RecipeRouter.GetRecipeMatByProductCode", zap.Error(err))
		http.Error(w, fmt.Sprintf("Material Recipe file: %s with productCode: %s not found", fileName, productCode), http.StatusNotFound)
		return
	}

	if err := json.NewEncoder(w).Encode(result); err != nil {
		rr.taoLogger.Log.Error("RecipeRouter.GetRecipeMatByProductCode", zap.Error(err))
		http.Error(w, "Internal Error", http.StatusInternalServerError)
		return
	}
}

func (rr *RecipeRouter) getRecipeJson(w http.ResponseWriter, r *http.Request) {
	country := chi.URLParam(r, "country")
	filename := chi.URLParam(r, "filename")

	w.Header().Add("Content-Type", "application/json")
	countryID, err := rr.data.GetCountryIDByName(country)
	if err != nil {
		rr.taoLogger.Log.Error("RecipeRouter.GetRecipeJson", zap.Error(err))
		http.Error(w, fmt.Sprintf("Country Name: %s not found!!!", country), http.StatusNotFound)
		return
	}
	if err := json.NewEncoder(w).Encode(rr.data.GetRecipe(countryID, filename)); err != nil {
		rr.taoLogger.Log.Error("RecipeRouter.GetRecipeJson", zap.Error(err))
		http.Error(w, "Internal Error", http.StatusInternalServerError)
		return
	}
}

func (rr *RecipeRouter) updateRecipe(w http.ResponseWriter, r *http.Request) {
	rr.taoLogger.Log.Debug("Edit: ", zap.String("path", r.RequestURI))
	filename := chi.URLParam(r, "filename")
	country := chi.URLParam(r, "country")

	countryID, err := rr.data.GetCountryIDByName(country)
	if err != nil {
		rr.taoLogger.Log.Error("RecipeRouter.UpdateRecipe", zap.Error(err))
		http.Error(w, fmt.Sprintf("Country Name: %s not found!!!", country), http.StatusNotFound)
		return
	}

	// Lock
	updateMutex.Lock()
	defer updateMutex.Unlock()
	targetRecipe := rr.data.GetRecipe(countryID, filename)

	rr.taoLogger.Log.Debug("Target => ", zap.Any("target", targetRecipe.MachineSetting.ConfigNumber))

	// Body
	var ch_map map[string]interface{}
	var changes models.Recipe01

	err = json.NewDecoder(r.Body).Decode(&ch_map)
	if err != nil {
		rr.taoLogger.Log.Error("RecipeRouter.UpdateRecipe", zap.Error(errors.WithMessage(err, "Decode in request failed")))
		http.Error(w, "Can't Decode Recipe request body.", http.StatusBadRequest)
		return
	}

	// commit request
	editor := ch_map["edit_by"].(string)
	commit_msg := ch_map["commit_msg"].(string)

	changes = changes.FromMap(ch_map)

	rr.taoLogger.Log.Debug("Changes: ", zap.Any("changes", changes))
	// TODO: find the matched pd
	_, err = rr.data.GetRecipe01ByProductCode(filename, countryID, changes.ProductCode)

	if err != nil {
		rr.taoLogger.Log.Error("RecipeRouter.UpdateRecipe", zap.Error(errors.WithMessage(err, "Error when get recipe by product code")))
		http.Error(w, fmt.Sprintf("Recipe country: %s file: %s productCode: %s not found.", country, filename, changes.ProductCode), http.StatusNotFound)
		return
	}

	// menuMap := targetMenu.ToMap()
	changeMap := changes.ToMap()

	// Find changes
	// for key, val := range menuMap {
	// 	// rr.taoLogger.Log.Debug("..DynamicCompare.key", zap.Any("key", key))
	// 	testBool, err := helpers.DynamicCompare(val, changeMap[key])

	// 	// if err != nil {
	// 	// 	rr.taoLogger.Log.Error("RecipeRouter.UpdateRecipe", zap.Error(errors.WithMessage(err, "DynamicCompare in request failed")))
	// 	// 	http.Error(w, "Internal Error", http.StatusInternalServerError)
	// 	// 	return
	// 	// }

	// 	if !testBool && err == nil {
	// 		menuMap[key] = changeMap[key]
	// 	}
	// }

	// Apply changes
	tempRecipe := models.Recipe01{}
	tempRecipe = tempRecipe.FromMap(changeMap)

	// Disable temp! Was updated the master by patch. Too fast
	rr.data.SetValuesToRecipe(targetRecipe.Recipe01, tempRecipe)

	rr.taoLogger.Log.Debug("ApplyChange", zap.Any("status", "passed"))

	// check if changed
	// Log.Debug("Check if changed", zap.Any("result", rr.data.GetRecipe01ByProductCode(changes.ProductCode)))

	// target saved filename
	saved_filename := path.Join("./cofffeemachineConfig", countryID, filename)

	// store @ temporary file
	temp_file_name := helpers.GetTempFile(saved_filename, editor, 0)

	// TODO: push this change, editor, commit_msg into db

	// gen hash
	commit_hash, err := data.HashCommit(8)
	// rr.cache_db.SetToKey(commit_hash, targetRecipe)

	commit := data.CommitLog{

		Id:          commit_hash,
		Msg:         commit_msg,
		Created_at:  time.Now().Local().Format("2006-01-02 15:04:05"),
		Editor:      editor,
		Change_file: temp_file_name,
		Relation:    filename,
	}

	// ------------------------ SKIP THIS ------------------------
	// TODO: save only changes.

	// get new tempfile name if redis is connected;

	productCodeNoSpl := strings.ReplaceAll(changes.ProductCode, "-", "")
	patchName := "Recipe_" + productCodeNoSpl + "-" + commit_hash + "_" + filename + ".patch"

	// if cache service online
	if rr.cache_db.HealthCheck() == nil {
		// do change mode
		commit.Change_file = patchName
		commit.Relation = commit.Relation + "/patch"

		// add to patch list of that filename
		// filename:patchlist
		err := rr.cache_db.Add(countryID+"."+filename+":patchList", commit.Id)

		// add failed
		if err != nil {
			rr.taoLogger.Log.Error("RecipeRouter.UpdateRecipe", zap.Error(errors.WithMessage(err, "Error when tried to add to patch list")))
			http.Error(w, "Internal Error", http.StatusInternalServerError)
			return
		}

	}

	// this following codes do need users to pass update to each other
	// otherwise, the changes will diverge

	file, _ := os.Create(temp_file_name)
	if err != nil {
		rr.taoLogger.Log.Error("RecipeRouter.UpdateRecipe", zap.Error(errors.WithMessage(err, "Error when tried to create file")))
		http.Error(w, "Internal Error", http.StatusInternalServerError)
		return
	}

	// write to local if cannot connect
	encoder := json.NewEncoder(file)
	encoder.SetIndent("", " ")
	// full
	err = encoder.Encode(tempRecipe)

	// -------------------------------------------------------------

	// partial
	// err = encoder.Encode(changes)

	// put changes to redis

	if err != nil {
		rr.taoLogger.Log.Error("RecipeRouter.UpdateRecipe", zap.Error(errors.WithMessage(err, "Error when write file")))
		http.Error(w, "Internal Error", http.StatusInternalServerError)
		return
	}

	// add to commit
	err = data.Insert(&commit)

	err = rr.cache_db.SetToKey(patchName, changes)
	// TODO: ^----- change this to patch

	if err != nil {
		rr.taoLogger.Log.Error("RecipeRouter.UpdateRecipeCache", zap.Error(errors.WithMessage(err, "Error when write file")))
		http.Error(w, "Internal Error", http.StatusInternalServerError)
		return
	}

	w.Header().Add("Content-Type", "application/json")
	json.NewEncoder(w).Encode(map[string]interface{}{
		"status":    "OK",
		"commit_id": commit_hash,
	})
}

func (rr *RecipeRouter) updateMaterialSetting(w http.ResponseWriter, r *http.Request) {
	w.Header().Add("Content-Type", "application/json")

	country := r.URL.Query().Get("country")
	filename := r.URL.Query().Get("filename")

	rr.taoLogger.Log.Debug("RecipeRouter.updateMaterialSetting", zap.Any("country", country), zap.Any("filename", filename))

	countryID, err := rr.data.GetCountryIDByName(country)
	if err != nil {
		http.Error(w, fmt.Sprintf("Country Name: %s not found!!!", country), http.StatusNotFound)
		return
	}

	updateMutex.Lock()
	defer updateMutex.Unlock()
	// get material setting
	materialSetting := rr.data.GetMaterialSetting(countryID, filename)

	if len(materialSetting) == 0 {
		http.Error(w, fmt.Sprintf("Recipe country: %s file: %s found empty settings.", country, filename), http.StatusNotFound)
		return
	}

	// TODO: create commit and set change

}

func (rr *RecipeRouter) getSavedRecipes(w http.ResponseWriter, r *http.Request) {

	file_version := chi.URLParam(r, "filename_version_only")
	country := chi.URLParam(r, "country")

	countryID, err := rr.data.GetCountryIDByName(country)
	if err != nil {
		http.Error(w, fmt.Sprintf("Country Name: %s not found!!!", country), http.StatusNotFound)
		return
	}

	commits, err := data.GetCommitLogOfFilename(countryID, file_version)
	// fmt.Println("commits", commits)
	rr.taoLogger.Log.Debug("RecipeRouter.getSavedRecipes", zap.Any("commits", commits))

	if err != nil || len(commits) == 0 {

		return
	}

	w.Header().Set("Content-Type", "application/json")

	w.WriteHeader(http.StatusOK)
	json.NewEncoder(w).Encode(map[string]interface{}{"files": commits})
}

func (rr *RecipeRouter) getSavedAsPatches(w http.ResponseWriter, r *http.Request) {

	filename := chi.URLParam(r, "filename")
	country := chi.URLParam(r, "country")

	countryID, err := rr.data.GetCountryIDByName(country)
	if err != nil {
		http.Error(w, fmt.Sprintf("Country Name: %s not found!!!", country), http.StatusNotFound)
		return
	}

	patchList, err := rr.cache_db.GetList(countryID + "." + filename + ":patchList")
	if err != nil {
		// silent return, no patch
		return
	}

	// rr.taoLogger.Log.Debug("RecipeRouter.getSavedAsPatches", zap.Any("targetPatchOf", countryID+"."+filename+":patchList"), zap.Any("patchList", patchList))

	// find patch content from patch list
	keys, err := rr.cache_db.KeyList()
	if err != nil {
		// keys found nothing
		http.Error(w, "Internal Error", http.StatusInternalServerError)
		return
	}

	// loop through keys, if contain patch id
	patchMap := map[string]models.Recipe01{}
	for _, key := range keys {
		if strings.Contains(key, filename) && strings.Contains(key, "patch") {

			// check if legit saved file from patchList
			for _, patchID := range patchList {
				if strings.Contains(key, patchID) {
					// get patch content
					var recipePatch models.Recipe01
					err := rr.cache_db.GetKeyTo(key, &recipePatch)
					if err != nil {
						// silent return, no patch
						return
					}

					// append to patch list
					// patchContents = append(patchContents, recipePatch)
					patchMap[patchID] = recipePatch
				}
			}
		}
	}

	w.Header().Set("Content-Type", "application/json")
	w.WriteHeader(http.StatusOK)
	json.NewEncoder(w).Encode(patchMap)

	// The above code is using the Zap logging library in Go to log a debug message with two fields. The
	// first field is "targetPatchOf" with the value of countryID + "." + filename + ":patchList", and the
	// second field is "patchList" with the value of the variable patchList. This log message is related
	// to the "RecipeRouter.getSavedAsPatches" method.
	// rr.taoLogger.Log.Debug("RecipeRouter.getSavedAsPatches", zap.Any("patchMap", patchMap))
}

func (rr *RecipeRouter) getToppings(w http.ResponseWriter, r *http.Request) {

	countryID := chi.URLParam(r, "country")
	filename := chi.URLParam(r, "filename")

	w.Header().Add("Content-Type", "application/json")
	json.NewEncoder(w).Encode(rr.data.GetToppings(countryID, filename))

}

func (rr *RecipeRouter) getToppingsOfRecipe(w http.ResponseWriter, r *http.Request) {

	countryID := chi.URLParam(r, "country")
	filename := chi.URLParam(r, "filename")
	productCode := chi.URLParam(r, "product_code")

	w.Header().Add("Content-Type", "application/json")

	// all toppings
	// allToppings := rr.data.GetToppings(countryID, filename)

	topps, err := rr.data.GetToppingsOfRecipe(countryID, filename, productCode)

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

	json.NewEncoder(w).Encode(topps)
}

func (rr *RecipeRouter) getSubmenusOfRecipe(w http.ResponseWriter, r *http.Request) {

	countryID := chi.URLParam(r, "country")
	filename := chi.URLParam(r, "filename")
	productCode := chi.URLParam(r, "product_code")

	w.Header().Add("Content-Type", "application/json")

	submenus, err := rr.data.GetSubmenusOfRecipe(countryID, filename, productCode)

	rr.taoLogger.Log.Debug("RecipeRouter.getSubmenusOfRecipe", zap.Any("submenus", len(submenus)))

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

	json.NewEncoder(w).Encode(submenus)
}

// get raw recipe
func (rr *RecipeRouter) getRawRecipeOfProductCode(w http.ResponseWriter, r *http.Request) {

	countryID := chi.URLParam(r, "country")
	filename := chi.URLParam(r, "filename")
	productCode := chi.URLParam(r, "product_code")

	// debug
	// rr.taoLogger.Log.Debug("RecipeRouter.getRawRecipeOfProductCode", zap.Any("countryID", countryID), zap.Any("filename", filename), zap.Any("productCode", productCode))

	w.Header().Add("Content-Type", "application/json")

	recipe, err := rr.data.GetRecipe01ByProductCode(filename, countryID, productCode)

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

	// return recipe
	// rr.taoLogger.Log.Debug("RecipeRouter.getRawRecipeOfProductCode", zap.Any("recipe", recipe))

	json.NewEncoder(w).Encode(recipe)
}

func (rr *RecipeRouter) getImageOfProductCode(w http.ResponseWriter, r *http.Request) {

	countryID := chi.URLParam(r, "country")
	filename := chi.URLParam(r, "filename")
	productCode := chi.URLParam(r, "product_code")

	w.Header().Add("Content-Type", "image/png")

	// get image
	recipe, err := rr.data.GetRecipe01ByProductCode(filename, countryID, productCode)
	if err != nil {
		http.Error(w, err.Error(), http.StatusNotFound)
		return
	}

	// check if image string is not empty
	if recipe.UriData == "" {
		http.Error(w, "Image not found", http.StatusNotFound)
		return
	}

	// clean image uri name
	clean1 := strings.Replace(recipe.UriData, "\u003d", "=", -1)
	uriName := strings.Split(clean1, "=")[1]

	img_dir := "taobin_project/image/page_drink_picture2_n/"

	fullPath := img_dir + uriName
	rr.taoLogger.Log.Debug("RecipeRouter.getImageOfProductCode", zap.Any("fullPath", fullPath))

	// check if image file exists
	if _, err := os.Stat(fullPath); os.IsNotExist(err) {
		http.Error(w, "Image not found", http.StatusNotFound)
		return
	}

	// read image
	imgFile, err := os.Open(fullPath)
	if err != nil {
		http.Error(w, err.Error(), http.StatusNotFound)
		return
	}
	defer imgFile.Close()

	thisImage, err := png.Decode(imgFile)
	if err != nil {
		http.Error(w, err.Error(), http.StatusNotFound)
		return
	}

	// write image
	png.Encode(w, thisImage)
}

func (rr *RecipeRouter) doMergeJson(w http.ResponseWriter, r *http.Request) {
	// TODO: v2, change to binary instead
	if !APIhandler(w, r) {
		rr.taoLogger.Log.Warn("RecipeRouter.doMergeJson", zap.Error(errors.New("API is busy")))
		return
	} else {
		rr.taoLogger.Log.Debug("RecipeRouter.doMergeJson", zap.Any("status", "ready"))
	}

	// TODO: add binary command here
}

func APIhandler(w http.ResponseWriter, r *http.Request) bool {
	timeout := 10 * time.Second

	if !lockThenTimeout(&binaryApiLock, timeout) {
		http.Error(w, "API is busy", http.StatusServiceUnavailable)
		return false
	}
	defer binaryApiLock.Unlock()
	return true
}

func lockThenTimeout(mutex *sync.Mutex, timeout time.Duration) bool {
	ch := make(chan struct{})
	go func() {
		mutex.Lock()
		close(ch)
	}()
	select {
	case <-ch:
		return true
	case <-time.After(timeout):
		return false
	}
}