/
monster_repository.go
133 lines (106 loc) · 3.58 KB
/
monster_repository.go
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package repository
import (
"context"
"github.com/iamaul/go-pokedex/internal/domain"
"github.com/iamaul/go-pokedex/internal/monster"
"github.com/iamaul/go-pokedex/pkg/db/mongodb"
httpErr "github.com/iamaul/go-pokedex/pkg/error"
"github.com/iamaul/go-pokedex/pkg/utils"
"github.com/pkg/errors"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/bson/primitive"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
)
type MonsterRepo struct {
db *mongo.Collection
}
func NewMonsterRepo(db *mongo.Database) monster.MonsterRepository {
return &MonsterRepo{
db: db.Collection("monsters"),
}
}
func (r *MonsterRepo) CreateMonster(ctx context.Context, monster *domain.Monster) (*domain.Monster, error) {
result, err := r.db.InsertOne(ctx, monster)
if mongodb.IsDuplicate(err) {
return nil, errors.Wrap(err, httpErr.ErrUserAlreadyExists)
}
monster.ID = result.InsertedID.(primitive.ObjectID)
return monster, err
}
func (r *MonsterRepo) UpdateMonster(ctx context.Context, monster *domain.MonsterUpdate) (*domain.MonsterUpdate, error) {
updateQuery := bson.M{}
if monster.Name != "" {
updateQuery["name"] = monster.Name
}
_, err := r.db.UpdateOne(ctx, bson.M{"_id": monster.ID}, bson.M{"$set": updateQuery})
return monster, err
}
func (r *MonsterRepo) DeleteMonster(ctx context.Context, monsterID primitive.ObjectID) error {
_, err := r.db.DeleteOne(ctx, bson.M{"_id": monsterID})
return err
}
func (r *MonsterRepo) FetchMonsters(ctx context.Context, pq *utils.PaginationQuery) (*domain.MonsterList, error) {
totalCount, err := r.db.CountDocuments(ctx, bson.D{})
if err != nil {
return nil, errors.Wrap(err, "db.CountDocuments")
}
if totalCount == 0 {
return &domain.MonsterList{
TotalCount: 0,
TotalPages: 0,
Page: 0,
Size: 0,
HasMore: false,
Monsters: make([]*domain.Monster, 0),
}, nil
}
limit := int64(pq.GetLimit())
skip := int64(pq.GetOffset())
cursor, err := r.db.Find(ctx, bson.D{}, &options.FindOptions{
Limit: &limit,
Skip: &skip,
})
if err != nil {
return nil, errors.Wrap(err, "db.Find")
}
defer cursor.Close(ctx)
monsters := make([]*domain.Monster, 0, pq.GetSize())
for cursor.Next(ctx) {
var monster domain.Monster
if err := cursor.Decode(&monster); err != nil {
return nil, errors.Wrap(err, "cursor.Decode")
}
monsters = append(monsters, &monster)
}
if err := cursor.Err(); err != nil {
return nil, errors.Wrap(err, "cursor.Err")
}
return &domain.MonsterList{
TotalCount: int(totalCount),
TotalPages: utils.GetTotalPages(int(totalCount), pq.GetSize()),
Page: pq.GetPage(),
Size: pq.GetSize(),
HasMore: utils.GetHasMore(pq.GetPage(), int(totalCount), pq.GetSize()),
Monsters: monsters,
}, nil
}
func (r *MonsterRepo) FindByID(ctx context.Context, monsterID primitive.ObjectID) (*domain.Monster, error) {
var monster domain.Monster
if err := r.db.FindOne(ctx, bson.M{"_id": monsterID}).Decode(&monster); err != nil {
if errors.Is(err, mongo.ErrNoDocuments) {
return &domain.Monster{}, errors.Wrap(err, httpErr.ErrNotFound)
}
return &domain.Monster{}, err
}
return &monster, nil
}
func (r *MonsterRepo) FindByName(ctx context.Context, monsterName string) (*domain.Monster, error) {
var monster domain.Monster
err := r.db.FindOne(ctx, bson.M{"name": monsterName}).Decode(&monster)
return &monster, err
}
func (r *MonsterRepo) AddMonsterType(ctx context.Context, monsterID, monsterTypeID primitive.ObjectID) error {
_, err := r.db.UpdateOne(ctx, bson.M{"_id": monsterID}, bson.M{"$push": bson.M{"monster_types": monsterTypeID}})
return err
}