package httpRequest

import (
	json2 "encoding/json"
	"net/http"
	"strings"

	"go-socket/packages/convertions"
	"go-socket/packages/globals"
	"go-socket/packages/minio"
)

func HandleAttachmentFileUpload(response http.ResponseWriter, request *http.Request) {
	if !validCheckWithResponseOnFail(&response, request, file) {
		return
	}
	ctx := request.Context()

	user, err := getUserByToken(ctx, request.Header.Get("token"))
	if err != nil {
		http.Error(response, "invalid token", http.StatusUnauthorized)
		return
	}

	request.Body = http.MaxBytesReader(response, request.Body, int64(globals.MaxRequestWithFileBytes))

	if err = request.ParseMultipartForm(int64(globals.MaxRequestBytes)); err != nil {
		http.Error(response, "invalid multipart form", http.StatusBadRequest)
		return
	}

	conn, ok := getConnectionWithResponseOnFail(&response, request, user)
	if !ok {
		return
	}

	file, header, err := request.FormFile("file")
	if err != nil {
		http.Error(response, "missing file", http.StatusBadRequest)
		return
	}
	defer file.Close()

	contentType := header.Header.Get("Content-Type")
	key := minio.GetKey(minio.GetKeyOptions{
		ConnectionId: conn.Id,
		MimeType:     contentType,
		UploadType:   minio.File,
	})

	if err = minio.Upload(ctx, key, file, header.Size, contentType, map[string]string{
		"originalName": header.Filename,
		"uploaderId":   user.Id.String(),
	}); err != nil {
		http.Error(response, "upload failed", http.StatusInternalServerError)
		return
	}

	response.WriteHeader(http.StatusCreated)
	response.Write([]byte(key))
}

func HandleGetUserAvatar(response http.ResponseWriter, request *http.Request) {
	if !validCheckWithResponseOnFail(&response, request, normal) {
		return
	}
	ctx := request.Context()

	_, err := getUserByToken(ctx, request.Header.Get("token"))
	if err != nil {
		http.Error(response, "invalid token", http.StatusUnauthorized)
		return
	}

	targetId, err := convertions.StringToUuid(request.URL.Query().Get("userid"))
	if err != nil {
		http.Error(response, "invalid userid", http.StatusBadRequest)
		return
	}

	target, err := getUserById(ctx, targetId)
	if err != nil {
		http.Error(response, "user not found", http.StatusNotFound)
		return
	}

	if target.Avatar == "" {
		http.Error(response, "no avatar", http.StatusNotFound)
		return
	}

	url, _, err := minio.GetDownloadUrlAndMetadata(ctx, target.Avatar)
	if err != nil {
		http.Error(response, "internal server error", http.StatusInternalServerError)
		return
	}

	response.WriteHeader(http.StatusOK)
	response.Write([]byte(url.String()))
}

func HandleGetUserProfileBg(response http.ResponseWriter, request *http.Request) {
	if !validCheckWithResponseOnFail(&response, request, normal) {
		return
	}
	ctx := request.Context()

	if _, err := getUserByToken(ctx, request.Header.Get("token")); err != nil {
		http.Error(response, "invalid token", http.StatusUnauthorized)
		return
	}

	targetId, err := convertions.StringToUuid(request.URL.Query().Get("userid"))
	if err != nil {
		http.Error(response, "invalid userid", http.StatusBadRequest)
		return
	}

	target, err := getUserById(ctx, targetId)
	if err != nil {
		http.Error(response, "user not found", http.StatusNotFound)
		return
	}

	if target.ProfileBg == "" {
		http.Error(response, "no profile background", http.StatusNotFound)
		return
	}

	url, _, err := minio.GetDownloadUrlAndMetadata(ctx, target.ProfileBg)
	if err != nil {
		http.Error(response, "internal server error", http.StatusInternalServerError)
		return
	}

	response.WriteHeader(http.StatusOK)
	response.Write([]byte(url.String()))
}

func HandleAttachmentFileDownload(response http.ResponseWriter, request *http.Request) {
	if !validCheckWithResponseOnFail(&response, request, normal) {
		return
	}
	ctx := request.Context()

	user, err := getUserByToken(ctx, request.Header.Get("token"))
	if err != nil {
		http.Error(response, "invalid token", http.StatusUnauthorized)
		return
	}

	conn, ok := getConnectionWithResponseOnFail(&response, request, user)
	if !ok {
		return
	}

	key := request.URL.Query().Get("key")
	if !strings.HasPrefix(key, conn.Id.String()+"/") {
		http.Error(response, "no such file", http.StatusUnauthorized)
		return
	}

	url, meta, err := minio.GetDownloadUrlAndMetadata(ctx, key)
	if err != nil {
		http.Error(response, "no such file", http.StatusUnauthorized)
		return
	}

	json, err := json2.Marshal(map[string]string{
		"url":          url.String(),
		"originalName": meta["originalName"],
	})
	if err != nil {
		http.Error(response, "metadata error", http.StatusInternalServerError)
		return
	}

	response.WriteHeader(http.StatusOK)
	response.Write(json)
}