package handlers

import (
	"amocrm_templategen_back/dal/model"
	"errors"
	"github.com/gorilla/schema"
	"go.uber.org/zap"
	"google.golang.org/api/drive/v3"
	"net/http"
)

type RespGDiskSaveToken struct {
	State string
	Code  string
	Scope string
}

// GDiskSaveToken - сохраняет токен авторизации
func (h *Handlers) GDiskSaveToken(w http.ResponseWriter, r *http.Request) {
	var resp RespGDiskSaveToken

	err := r.ParseForm()
	if err != nil {
		h.reportError(w, err, http.StatusBadRequest)
		return
	}

	err = schema.NewDecoder().Decode(&resp, r.Form)
	if err != nil {
		h.reportError(w, err, 500)
		return
	}

	// get user
	user := getJwtUser(r)
	if user == nil {
		h.reportError(w, ErrorUnauthorized, http.StatusUnauthorized)
		return
	}

	// generate token

	token, err := h.GDisk.GetToken(r.Context(), resp.Code)
	if err != nil {
		h.reportError(w, err, 500)
		return
	}

	gDisk, err := h.GDisk.NewClient(r.Context(), token)
	if err != nil {
		h.logger.Error("ErrorHandler", zap.Error(err))
	}

	// Make default directories in Google Drive

	// Check folders: Basic Folder
	fileList, err := gDisk.GetResourceByName("templategen", "")
	if err != nil {
		h.logger.Error("ErrorHandler", zap.Error(err))
	}

	var basicFolder, templateFolder, saveFolder *drive.File
	if fileList == nil {
		basicFolder, err = gDisk.PutResources("templategen", "")
		if err != nil {
			h.logger.Error("ErrorHandler", zap.Error(err))
		}

	} else {
		basicFolder = fileList[0]
	}

	// Check folders: Template Folder
	fileList, err = gDisk.GetResourceByName("templates", basicFolder.Id)
	if err != nil {
		h.logger.Error("ErrorHandler", zap.Error(err))
	}

	if fileList == nil {
		templateFolder, err = gDisk.PutResources("templates", basicFolder.Id)
		if err != nil {
			h.logger.Error("ErrorHandler", zap.Error(err))
		}
	} else {
		templateFolder = fileList[0]
	}

	// Check folders: Save Folder

	fileList, err = gDisk.GetResourceByName("saved", basicFolder.Id)
	if err != nil {
		h.logger.Error("ErrorHandler", zap.Error(err))
	}

	if fileList == nil {
		saveFolder, err = gDisk.PutResources("saved", basicFolder.Id)
		if err != nil {
			h.logger.Error("ErrorHandler", zap.Error(err))
		}
	} else {
		saveFolder = fileList[0]
	}

	// Insert/Update token in DB
	_, err = h.dal.GDisk.InsertOrUpdate(r.Context(), &model.GDisk{
		UserID:           user.UserID,
		AccessToken:      token.AccessToken,
		RefreshToken:     token.RefreshToken,
		ExpiresIn:        token.Expiry,
		TokenType:        token.TokenType,
		TemplateFolder:   "templategen/templates",
		TemplateFolderID: templateFolder.Id,
		SaveFolder:       "templategen/saved",
		SaveFolderID:     saveFolder.Id,
	})

	if err != nil {
		h.reportError(w, err, 500)
		return
	}
}

func (h *Handlers) GDiskGetFile(w http.ResponseWriter, r *http.Request) {

}

type RespGDiskGetDirInfo struct {
	ID       string
	Name     string
	ParentID string
}

// GDiskGetDirInfo - возвращает данные по папке, включая список её файлов и папок
func (h *Handlers) GDiskGetDirInfo(w http.ResponseWriter, r *http.Request) {
	var resp RespGDiskGetDirInfo

	err := decodePost(&resp, r)
	if err != nil {
		h.reportError(w, err, http.StatusBadRequest)
		return
	}

	if resp.ID == "" && resp.Name == "" {
		h.reportError(w, err, http.StatusBadRequest)
		return
	}

	amoData := getAmoByJwt(r)
	user := getJwtUser(r)

	if amoData == nil && user == nil {
		h.reportError(w, errors.New("amo account not found"), http.StatusUnauthorized)
		return
	}

	var userId string
	if amoData != nil {
		userId = amoData.UserID
	} else {
		userId = user.UserID
	}

	gdiskInfo, err := h.dal.GDisk.GetByUserID(r.Context(), userId)
	if err != nil {
		h.reportError(w, err, http.StatusInternalServerError)
		return
	}

	if gdiskInfo == nil {
		h.reportError(w, errors.New("gdisk info not found"), http.StatusForbidden)
		return
	}

	if gdiskInfo.Token() == nil {
		h.reportError(w, errors.New("google token invalid"), http.StatusForbidden)
		return
	}

	client, err := h.GDisk.NewClient(r.Context(), gdiskInfo.Token())
	if err != nil {
		h.reportError(w, err, http.StatusInternalServerError)
		return
	}

	var res []*drive.File

	if resp.Name != "" {
		res, err = client.GetResourceByName(resp.Name, resp.ParentID)
		if err != nil {
			h.reportError(w, err, http.StatusInternalServerError)
			return
		}
	}

	dir, err := client.GetResources(res[0].Id)
	if err != nil {
		h.reportError(w, err, http.StatusInternalServerError)
		return
	}

	sendResponse(w, 200, dir)

}

// GDiskGetDirTemplate - возвращает данные по папке, включая список её файлов и папок
func (h *Handlers) GDiskGetDirTemplate(w http.ResponseWriter, r *http.Request) {
	amoData := getAmoByJwt(r)
	user := getJwtUser(r)

	if amoData == nil && user == nil {
		h.reportError(w, errors.New("amo account not found"), http.StatusUnauthorized)
		return
	}

	var userId string
	if amoData != nil {
		userId = amoData.UserID
	} else {
		userId = user.UserID
	}

	gdiskInfo, err := h.dal.GDisk.GetByUserID(r.Context(), userId)
	if err != nil {
		h.reportError(w, err, http.StatusInternalServerError)
		return
	}

	if gdiskInfo == nil {
		h.reportError(w, errors.New("gdisk info not found"), http.StatusForbidden)
		return
	}

	if gdiskInfo.Token() == nil {
		h.reportError(w, errors.New("google token invalid"), http.StatusForbidden)
		return
	}

	client, err := h.GDisk.NewClient(r.Context(), gdiskInfo.Token())
	if err != nil {
		h.reportError(w, err, http.StatusInternalServerError)
		return
	}

	dir, err := client.GetResources(gdiskInfo.TemplateFolderID)
	if err != nil {
		h.reportError(w, err, http.StatusInternalServerError)
		return
	}

	sendResponse(w, 200, dir)
}

func (h *Handlers) GDiskMkDir(w http.ResponseWriter, r *http.Request) {

}

func (h *Handlers) GDiskDelDir(w http.ResponseWriter, r *http.Request) {

}