package collection

import (
	"encoding/json"
	"errors"
	"fmt"
	"net/http"

	"github.com/gin-gonic/gin"
	"github.com/guregu/null"
	"github.com/metarare/metarare_api/common"
	"github.com/metarare/metarare_api/helpers"
	"github.com/metarare/metarare_api/helpers/gauth"
	"github.com/metarare/metarare_api/helpers/gerror"
	"github.com/metarare/metarare_api/models"
	"github.com/metarare/metarare_api/util"
	"github.com/metarare/metarare_api/view"
	"github.com/spf13/viper"
	"gorm.io/gorm"
)

type CollectionV1Router struct {
	group   *gin.RouterGroup
	mDB     *gorm.DB
	rDB     *gorm.DB
	awsConf util.AWSConfs
	Env     *viper.Viper
}

type RegisterCollection struct {
	Name        string `json:"name" binding:"required"`
	Symbol      string `json:"symbol" binding:"required"`
	Description string `json:"description" binding:"required"`
	Type        string `json:"type" binding:"required"`
}

type ModifyStruct struct {
	CollectionID uint64 `json:"collection_id"`
	Description  string `json:"description"`
}

type ReturnCollectionData struct {
	Collection        models.Collection        `json:"collection"`
	CollectionProfile models.CollectionProfile `json:"collection_profile"`
	TxHash            string                   `json:"tx_hash"`
}

func NewCollectionV1Router(r common.Router, basePath string) CollectionV1Router {
	co := CollectionV1Router{
		group: r.Version.Group(basePath),
		mDB:   r.Db.MasterDB,
		rDB:   r.Db.ReadDB,
		awsConf: util.AWSConfs{
			Region:        r.Env.GetString("storage.region"),
			BucketName:    r.Env.GetString("storage.bucket_name"),
			Access_key_id: r.Env.GetString("storage.access_key_id"),
			Access_key:    r.Env.GetString("storage.access_key"),
		},
	}

	co.group.POST("", co.registerCollection)
	co.group.GET(":collection_name", co.getCollectionInfo)
	co.group.POST("item/:collection_name", co.getItemsInCollection)
	co.group.POST("activity/:collection_name", co.getActivitiesInCollection)
	co.group.GET("duplicate/:name", co.duplicateName)
	co.group.PATCH("", co.updateCollection)

	return co
}

// registerCollection godoc
// @Summary create collection
// @Description 컬렉션 등록, json struct = {name: string, symbol: string, description: string, type: string}
// @Schemes
// @security ApiKeyAuth
// @Tags collection
// @Accept  multipart/form-data
// @Produce json
// @Param thumbnailImage formData file true  "thumbnail image"
// @Param coverImage formData file true  "cover image"
// @Param json formData common.SwagStruct true "name, symbol, description"
// @Success 200 {string} OK
// @Router /collection [post]
func (co CollectionV1Router) registerCollection(c *gin.Context) {
	userID, err := gauth.GetCurrentUserIDToInt64(c)
	if err != nil || userID == 0 {
		gerror.IntegratedResponseToRequest(c, http.StatusUnauthorized, gerror.Unauthorized, nil, err)
		return
	}

	form, err := c.MultipartForm()
	if err != nil {
		gerror.IntegratedResponseToRequest(c, http.StatusInternalServerError, gerror.MultipartError, nil, err)
		return
	}

	_request := form.Value["json"]
	if _request == nil {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, errors.New("invalid parameter value"))
		return
	}

	request := RegisterCollection{}
	if err := json.Unmarshal([]byte(_request[0]), &request); err != nil {
		gerror.IntegratedResponseToRequest(c, http.StatusInternalServerError, gerror.InvalidParameterValue, nil, nil)
		return
	}

	thumbnailImage := form.File["thumbnailImage"]
	if thumbnailImage == nil {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, errors.New("invalid parameter value"))
		return
	}

	coverImage := form.File["coverImage"]
	if coverImage == nil {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, errors.New("invalid parameter value"))
		return
	}

	wallet := models.UserWallet{}
	if err := co.rDB.Where("user_id = ?", userID).Find(&wallet).Error; err != nil {
		gerror.IntegratedResponseToRequest(c, http.StatusInternalServerError, gerror.InvalidParameterValue, nil, err)
		return
	}

	/*
		FIXME ethclient 최소 네트워크 수수료 보유 여부를 확인하는 로직
		현재 보유중인 이더와, 플랫폼 내에서 사용가능한 이더 가져오기.
		사용가능한 이더 값으로 최소 가스비를 확인한다.
	*/

	setting := models.Setting{}
	_err := co.rDB.Find(&setting).Error
	if errors.Is(_err, gorm.ErrRecordNotFound) {
		gerror.IntegratedResponseToRequest(c, http.StatusInternalServerError, gerror.NotFoundRecord, nil, _err)
		return
	}
	_, availableEth := helpers.GetSelectedBalance(co.rDB, userID, "eth", wallet.Address)
	if setting.GasDeposit > availableEth {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, errors.New("you don't have enough points"))
		return
	}

	tx := co.mDB.Begin()
	defer common.DBTransaction(tx)

	collection := models.Collection{
		ContractAddress: "temp",
		OwnerAddress:    wallet.Address,
		Network:         "eth",
		Symbol:          request.Symbol,
		IsOfficial:      0,
		Status:          "visible",
		Type:            request.Type, //erc721, erc1155
	}
	if err := tx.Save(&collection).Error; err != nil {
		gerror.IntegratedResponseToRequest(c, http.StatusInternalServerError, gerror.MysqlSaveError, nil, err)
		tx.Rollback()
		return
	}

	var thumbnailURL string
	thumbnailPath := fmt.Sprintf("collection/thumbnail/%d", collection.ID)
	for _, f := range thumbnailImage {
		_thumbnailURL, err := util.UploadToS3(co.awsConf, thumbnailPath, f)
		if err != nil {
			gerror.IntegratedResponseToRequest(c, http.StatusInternalServerError, gerror.Error3rdParty, nil, err)
			tx.Rollback()
			return
		}
		thumbnailURL = _thumbnailURL
	}

	var coverURL string
	coverPath := fmt.Sprintf("collection/cover/%d", collection.ID)
	for _, f := range coverImage {
		_coverURL, err := util.UploadToS3(co.awsConf, coverPath, f)
		if err != nil {
			gerror.IntegratedResponseToRequest(c, http.StatusInternalServerError, gerror.Error3rdParty, nil, err)
			tx.Rollback()
			return
		}
		coverURL = _coverURL
	}

	profile := models.CollectionProfile{
		CollectionID:   collection.ID,
		Name:           request.Name,
		Description:    request.Description,
		ThumbnailImage: thumbnailURL,
		CoverImage:     null.StringFrom(coverURL),
	}
	if err := tx.Save(&profile).Error; err != nil {
		gerror.IntegratedResponseToRequest(c, http.StatusInternalServerError, gerror.MysqlSaveError, nil, err)
		tx.Rollback()
		return
	}

	res := ReturnCollectionData{}
	res.Collection = collection
	res.CollectionProfile = profile

	var _collectionAddress string

	if request.Type == "erc721" {
		body := helpers.EIP721{
			NFTBasic: &helpers.NFTBasic{
				Name:         request.Name,
				Symbol:       request.Symbol,
				OwnerAddress: wallet.Address,
			},
			BaseURI: "https://nftinfo.meta-rare.net/",
		}
		err, EIP721 := helpers.CreateCollection721(body, wallet.PrivateKey)
		if err != nil {
			gerror.IntegratedResponseToRequest(c, http.StatusInternalServerError, gerror.InvalidParameterValue, nil, err)
			tx.Rollback()
			return
		}
		res.TxHash = EIP721.CollectionInfo.Tx.Hash().String()
		_collectionAddress = EIP721.CollectionInfo.CollectionAddress
	} else if request.Type == "erc1155" {
		body := helpers.EIP1155{
			NFTBasic: &helpers.NFTBasic{
				Name:         request.Name,
				Symbol:       request.Symbol,
				OwnerAddress: wallet.Address,
			},
			CustomURI: "https://nftinfo.meta-rare.net/",
		}
		err, EIP1155 := helpers.CreateCollection1155(body, wallet.PrivateKey)
		if err != nil {
			gerror.IntegratedResponseToRequest(c, http.StatusInternalServerError, gerror.InvalidParameterValue, nil, err)
			tx.Rollback()
			return
		}
		res.TxHash = EIP1155.CollectionInfo.Tx.Hash().String()
		_collectionAddress = EIP1155.CollectionInfo.CollectionAddress
	}

	if err := tx.Commit().Error; err != nil {
		gerror.IntegratedResponseToRequest(c, http.StatusInternalServerError, gerror.MysqlSaveError, nil, err)
		tx.Rollback()
		return
	}

	if err := co.mDB.Model(&models.Collection{}).Where("id = ?", collection.ID).Update("contract_address", _collectionAddress).Error; err != nil {
		gerror.IntegratedResponseToRequest(c, http.StatusInternalServerError, gerror.MysqlSaveError, nil, err)
		return
	}

	gerror.IntegratedResponseToRequest(c, http.StatusOK, gerror.OK, res, nil)
}

// getCollectionInfo godoc
// @Summary get collection info
// @Description 컬렉션 페이지에 있는 기본 정보 (탭 데이터는 따로 가져와야 한다.)
// @Schemes
// @Tags collection
// @Accept  json
// @Produce json
// @Param collection_name path string true "collection name"
// @Success 200 {object} view.CollectionInfo
// @Router /collection/{collection_name} [get]
func (co CollectionV1Router) getCollectionInfo(c *gin.Context) {
	userID, _ := gauth.GetCurrentUserIDToInt64(c)

	_collectionName := c.Param("collection_name")
	if _collectionName == "" {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, errors.New("invalid parameter value"))
		return
	}
	_id, err := common.ConvertToCollectionId(co.rDB, _collectionName)
	if _id == 0 || err != nil {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, errors.New("invalid parameter value"))
		return
	}

	ids := []uint64{_id}
	response, err := view.GetCollectionInfomation(co.rDB, ids, userID)
	if err != nil {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, err)
		return
	} else if len(response) == 0 {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, errors.New("not found recored"))
		return
	}

	gerror.IntegratedResponseToRequest(c, http.StatusOK, gerror.OK, response[0], nil)
}

// getItemsInCollection godoc
// @Summary get items in collection
// @Description 컬렉션 페이지 아이템 탭
// @Schemes
// @Tags collection
// @Accept  json
// @Produce json
// @Param collection_name path string true "collection name"
// @Param common.Filter body common.Filter true "filter data"
// @Success 200 {object} []common.ExpItem
// @Router /collection/item/{collection_name} [post]
func (co CollectionV1Router) getItemsInCollection(c *gin.Context) {
	userID, _ := gauth.GetCurrentUserIDToInt64(c)

	_collectionName := c.Param("collection_name")
	if _collectionName == "" {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, errors.New("invalid parameter value"))
		return
	}
	_id, err := common.ConvertToCollectionId(co.rDB, _collectionName)
	if _id == 0 || err != nil {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, errors.New("invalid parameter value"))
		return
	}

	_filter := common.Filter{}
	if err := c.ShouldBindJSON(&_filter); err != nil {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, err)
		return
	}

	response := []common.ExpItem{}
	_err := view.GetExploreItemQuery(co.rDB, _filter, userID).Where("collection.id in (?)", _id).Find(&response).Error
	if errors.Is(_err, gorm.ErrRecordNotFound) {
		gerror.IntegratedResponseToRequest(c, http.StatusInternalServerError, gerror.NotFoundRecord, nil, err)
		return
	}

	gerror.IntegratedResponseToRequest(c, http.StatusOK, gerror.OK, response, nil)
}

// getActivitiesInCollection godoc
// @Summary get activities in collection
// @Description 컬렉션 페이지 활동 탭
// @Schemes
// @Tags collection
// @Accept  json
// @Produce json
// @Param collection_name path string true "collection name"
// @Success 200 {object} []common.ExpItem
// @Router /collection/activity/{collection_name} [post]
func (co CollectionV1Router) getActivitiesInCollection(c *gin.Context) {
	//ANCHOR 수정 필요 컬렉션 조인이 안되어있음
	_collectionName := c.Param("collection_name")
	if _collectionName == "" {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, errors.New("invalid parameter value"))
		return
	}
	_id, err := common.ConvertToCollectionId(co.rDB, _collectionName)
	if _id == 0 || err != nil {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, errors.New("invalid parameter value"))
		return
	}

	response := []common.ActivityItem{}
	_err := view.GetActivityItemQuery(co.rDB).Where("log_relation.collection_id = ?", _id).Find(&response).Error
	if errors.Is(_err, gorm.ErrRecordNotFound) {
		gerror.IntegratedResponseToRequest(c, http.StatusInternalServerError, gerror.NotFoundRecord, nil, err)
		return
	}

	gerror.IntegratedResponseToRequest(c, http.StatusOK, gerror.OK, response, nil)
}

// duplicateName godoc
// @Summary collection profile name duplicate check.
// @Description 컬렉션 이름 중복체크
// @Schemes
// @Tags collection
// @name get-string-by-int
// @Accept  json
// @Produce  json
// @Param name path string true "check duplicate name"
// @Success 200 {string} OK!
// @Router /collection/duplicate/{name} [get]
func (co CollectionV1Router) duplicateName(c *gin.Context) {
	name := c.Param("name")
	if name == "" {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, errors.New("invalid parameter value"))
		return
	}

	_bool, err := common.DuplicateValue(co.rDB, "collection", name)
	if err != nil {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, err)
		return
	} else if _bool {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.DuplicateValue, nil, errors.New("duplicate value"))
		return
	}

	gerror.IntegratedResponseToRequest(c, http.StatusOK, gerror.OK, nil, nil)
}

// updateCollection godoc
// @Summary update collection
// @Description 컬렉션 수정, json struct = {description: string, collection_id: uin64}
// @Schemes
// @security ApiKeyAuth
// @Tags collection
// @Accept  multipart/form-data
// @Produce json
// @Param thumbnailImage formData file true  "thumbnail image"
// @Param coverImage formData file true  "cover image"
// @Param json formData common.SwagStruct true "description"
// @Success 200 {string} OK
// @Router /collection [patch]
func (co CollectionV1Router) updateCollection(c *gin.Context) {
	userID, err := gauth.GetCurrentUserIDToInt64(c)
	if err != nil || userID == 0 {
		gerror.IntegratedResponseToRequest(c, http.StatusUnauthorized, gerror.Unauthorized, nil, err)
		return
	}

	form, err := c.MultipartForm()
	if err != nil {
		gerror.IntegratedResponseToRequest(c, http.StatusInternalServerError, gerror.MultipartError, nil, err)
		return
	}
	_request := form.Value["json"]
	if _request == nil {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, errors.New("invalid parameter value"))
		return
	}
	request := ModifyStruct{}
	if err := json.Unmarshal([]byte(_request[0]), &request); err != nil {
		gerror.IntegratedResponseToRequest(c, http.StatusInternalServerError, gerror.InvalidParameterValue, nil, nil)
		return
	}
	thumbnailImage := form.File["thumbnailImage"]
	coverImage := form.File["coverImage"]

	collection := models.Collection{}
	_err := co.rDB.Where("id = ?", request.CollectionID).Find(&collection).Error
	if errors.Is(_err, gorm.ErrRecordNotFound) {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, _err)
		return
	}
	_uw := models.UserWallet{}
	_err = co.rDB.Where("user_id = ?", userID).Find(&_uw).Error
	if errors.Is(_err, gorm.ErrRecordNotFound) {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, _err)
		return
	}
	if collection.OwnerAddress != _uw.Address {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, errors.New("permission not found"))
		return
	}

	collectionProfile := models.CollectionProfile{}
	_err = co.rDB.Where("collection_id = ?", collection.ID).Find(&collectionProfile).Error
	if errors.Is(_err, gorm.ErrRecordNotFound) {
		gerror.IntegratedResponseToRequest(c, http.StatusBadRequest, gerror.InvalidParameterValue, nil, _err)
		return
	}

	if thumbnailImage != nil {
		thumbnailPath := fmt.Sprintf("collection/thumbnail/%d", collection.ID)
		for _, f := range thumbnailImage {
			_thumbnailURL, err := util.UploadToS3(co.awsConf, thumbnailPath, f)
			if err != nil {
				gerror.IntegratedResponseToRequest(c, http.StatusInternalServerError, gerror.Error3rdParty, nil, err)
				return
			}
			collectionProfile.ThumbnailImage = _thumbnailURL
		}
	}

	if coverImage != nil {
		coverPath := fmt.Sprintf("collection/cover/%d", collection.ID)
		for _, f := range coverImage {
			_coverURL, err := util.UploadToS3(co.awsConf, coverPath, f)
			if err != nil {
				gerror.IntegratedResponseToRequest(c, http.StatusInternalServerError, gerror.Error3rdParty, nil, err)
				return
			}
			collectionProfile.CoverImage = null.StringFrom(_coverURL)
		}
	}

	if request.Description != "" {
		collectionProfile.Description = request.Description
	}

	if err := co.mDB.Save(&collectionProfile).Error; err != nil {
		gerror.IntegratedResponseToRequest(c, http.StatusInternalServerError, gerror.MysqlSaveError, nil, err)
		return
	}

	gerror.IntegratedResponseToRequest(c, http.StatusOK, gerror.OK, nil, nil)
}