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mongo.go
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/
mongo.go
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package db
import (
"context"
"errors"
"fmt"
"log"
"time"
"github.com/IvanKyrylov/user-game-api/internal/apperror"
"github.com/IvanKyrylov/user-game-api/internal/game"
"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 db struct {
collection *mongo.Collection
logger *log.Logger
}
func NewStorage(storage *mongo.Database, collection string, logger *log.Logger) game.Storage {
return &db{
collection: storage.Collection(collection),
logger: logger,
}
}
func (s *db) FindById(ctx context.Context, id string) (game game.Game, err error) {
objectId, err := primitive.ObjectIDFromHex(id)
if err != nil {
return game, fmt.Errorf("failed to convert hex to objectid. error: %w", err)
}
filter := bson.M{"_id": objectId}
ctx, cancel := context.WithTimeout(ctx, 5*time.Second)
defer cancel()
result := s.collection.FindOne(ctx, filter)
if result.Err() != nil {
s.logger.Fatal(result.Err())
if errors.Is(result.Err(), mongo.ErrNoDocuments) {
return game, apperror.ErrNotFound
}
return game, fmt.Errorf("failed to execute query. error: %w", err)
}
if err = result.Decode(&game); err != nil {
return game, fmt.Errorf("failed to decode document. error: %w", err)
}
return game, nil
}
func (s *db) FindByPlayer(ctx context.Context, uuid string, limit, page int64) (games []game.Game, err error) {
userId, err := primitive.ObjectIDFromHex(uuid)
if err != nil {
return games, fmt.Errorf("failed to convert hex to objectid. error: %w", err)
}
filter := bson.M{"user_id": userId}
ctx, cancel := context.WithTimeout(ctx, 5*time.Second)
defer cancel()
cur, err := s.collection.Find(ctx, filter, options.Find().SetLimit(limit).SetSkip(page*limit))
if err != nil {
if errors.Is(err, mongo.ErrNoDocuments) {
return games, apperror.ErrNotFound
}
return games, fmt.Errorf("failed to execute query. error: %w", err)
}
if err = cur.All(ctx, &games); err == nil {
return games, nil
}
return games, fmt.Errorf("failed to decode document. error: %w", err)
}
func (s *db) FindAll(ctx context.Context, limit, page int64) (games []game.Game, err error) {
ctx, cancel := context.WithTimeout(ctx, 5*time.Second)
defer cancel()
cur, err := s.collection.Find(ctx, bson.M{}, options.Find().SetLimit(limit).SetSkip(page*limit))
if err != nil {
if errors.Is(err, mongo.ErrNoDocuments) {
return games, apperror.ErrNotFound
}
return games, fmt.Errorf("failed to execute query. error: %w", err)
}
if err = cur.All(ctx, &games); err == nil {
return games, nil
}
return games, fmt.Errorf("failed to decode document. error: %w", err)
}
func (s *db) AggregateGamesStatistics(ctx context.Context, uuid string, startDate, endDate time.Time) (gamesStatistics []game.GamesStatistics, err error) {
userId, err := primitive.ObjectIDFromHex(uuid)
if err != nil {
return gamesStatistics, fmt.Errorf("failed to convert hex to objectid. error: %w", err)
}
dateProjectStage := bson.M{
"$dateToString": bson.M{"format": "%Y-%m-%d", "date": "$created"},
}
groupedByDayStages := []bson.D{
{{"$project", bson.M{
"date": dateProjectStage,
"created": true,
}}},
{{"$group", bson.M{
"_id": "$date",
"games_played": bson.M{"$sum": 1},
}}},
{{"$project", bson.M{
"date": "$_id",
"games_played": true,
"_id": false,
}}},
}
withGameTypeStages := []bson.D{
{{"$project", bson.M{
"date": dateProjectStage,
"created": true,
"game_type": true,
}}},
{{"$group", bson.M{
"_id": bson.M{
"date": "$date",
"game_type": "$game_type",
},
"games_played": bson.M{"$sum": int64(1)},
}}},
{{"$project", bson.M{
"date": "$_id.date",
"game_type": "$_id.game_type",
"games_played": true,
"_id": false,
}}},
}
pipeline := []bson.D{
{{"$match", bson.M{
"user_id": userId,
"created": bson.M{
"$gte": startDate,
"$lte": endDate,
},
}}},
{{"$facet", bson.M{
"group_by_day": groupedByDayStages,
"with_game_type": withGameTypeStages,
}}},
}
ctx, cancel := context.WithTimeout(ctx, 5*time.Second)
defer cancel()
cur, err := s.collection.Aggregate(ctx, pipeline)
if err != nil {
if errors.Is(err, mongo.ErrNoDocuments) {
return gamesStatistics, apperror.ErrNotFound
}
return gamesStatistics, fmt.Errorf("failed to execute query. error: %w", err)
}
// for cur.Next(ctx) {
// var elem bson.M
// err := cur.Decode(&elem)
// if err != nil {
// return gamesStatistics, fmt.Errorf("failed to decode document. error: %w", err)
// }
// // groupByDay := elem["group_by_day"].(primitive.A)
// // withGameType := elem["with_game_type"].(primitive.A)
// gameStatistic := game.GamesStatistics{
// GroupByDay: make([]struct {
// GroupDate time.Time "json:\"date\""
// GamesPlayed int64 "json:\"games_played\""
// }, len(elem["group_by_day"].(primitive.A))),
// WithGameType: make([]struct {
// GameDate time.Time "json:\"date\""
// GameType int8 "json:\"game_type\""
// GamesPlayed int64 "json:\"games_played\""
// }, len(elem["with_game_type"].(primitive.A))),
// }
// for i, v := range elem["group_by_day"].(primitive.A) {
// temp := v.()/(map[string]interface{})
// gameStatistic.GroupByDay[i].GroupDate = temp["date"].(time.Time)
// gameStatistic.GroupByDay[i].GamesPlayed = temp["games_played"].(int64)
// }
// for i, v := range elem["with_game_type"].(primitive.A) {
// temp := v.(map[string]interface{})
// gameStatistic.WithGameType[i].GameDate = temp["date"].(time.Time)
// gameStatistic.WithGameType[i].GameType = temp["game_type"].(int8)
// gameStatistic.WithGameType[i].GamesPlayed = temp["games_played"].(int64)
// }
// // temp := game.GamesStatistics{
// // GroupByDay: struct {
// // GroupDate time.Time "json:\"date\""
// // GamesPlayed int64 "json:\"games_played\""
// // }{
// // GroupDate: groupByDay["date"].(time.Time),
// // GamesPlayed: groupByDay["games_played"].(int64),
// // },
// // WithGameType: struct {
// // GameDate time.Time "json:\"date\""
// // GameType int8 "json:\"game_type\""
// // GamesPlayed int64 "json:\"games_played\""
// // }{
// // GameDate: withGameType["date"].(time.Time),
// // GameType: withGameType["game_type"].(int8),
// // GamesPlayed: withGameType["games_played"].(int64),
// // },
// // }
// gamesStatistics = gameStatistic
// }
// return gamesStatistics, fmt.Errorf("failed to decode document. error: %w", err)
if err = cur.All(ctx, &gamesStatistics); err == nil {
return gamesStatistics, nil
}
return gamesStatistics, fmt.Errorf("failed to decode document. error: %w", err)
}