// Copyright (C) 2020 Storj Labs, Inc.
// See LICENSE for copying information.

package consoleapi

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

	"github.com/zeebo/errs"
	"go.uber.org/zap"

	"storj.io/common/uuid"
	"storj.io/storj/satellite/console"
)

var (
	// ErrBucketsAPI - console buckets api error type.
	ErrBucketsAPI = errs.Class("console api buckets")
)

// Buckets is an api controller that exposes all buckets related functionality.
type Buckets struct {
	log     *zap.Logger
	service *console.Service
}

// NewBuckets is a constructor for api buckets controller.
func NewBuckets(log *zap.Logger, service *console.Service) *Buckets {
	return &Buckets{
		log:     log,
		service: service,
	}
}

// AllBucketNames returns all bucket names for a specific project.
func (b *Buckets) AllBucketNames(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()
	var err error
	defer mon.Task()(&ctx)(&err)

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

	projectIDString := r.URL.Query().Get("projectID")

	projectID, err := uuid.FromString(projectIDString)
	if err != nil {
		b.serveJSONError(w, http.StatusInternalServerError, err)
		return
	}

	bucketNames, err := b.service.GetAllBucketNames(ctx, projectID)
	if err != nil {
		if console.ErrUnauthorized.Has(err) {
			b.serveJSONError(w, http.StatusUnauthorized, err)
			return
		}

		b.serveJSONError(w, http.StatusInternalServerError, err)
		return
	}

	err = json.NewEncoder(w).Encode(bucketNames)
	if err != nil {
		b.log.Error("failed to write json all bucket names response", zap.Error(ErrBucketsAPI.Wrap(err)))
	}
}

// serveJSONError writes JSON error to response output stream.
func (b *Buckets) serveJSONError(w http.ResponseWriter, status int, err error) {
	serveJSONError(b.log, w, status, err)
}