42 lines
1.9 KiB
Go
42 lines
1.9 KiB
Go
package main
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import (
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"context"
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"go.mongodb.org/mongo-driver/bson/primitive"
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)
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// UserModel is a model of user that is stored in the database
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type UserModel struct {
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ID primitive.ObjectID `bson:"_id,omitempty" json:"id"`
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Username string `bson:"username" json:"username"`
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DisplayName string `bson:"display_name" json:"displayName"`
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City string `bson:"city" json:"city"`
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}
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//go:generate repogen -src=user.go -dest=user_repo.go -model=UserModel -repo=UserRepository
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// UserRepository is an interface that describes the specification of querying user data in the database
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type UserRepository interface {
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// InsertOne stores userModel into the database and returns inserted ID if insertion
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// succeeds and returns error if insertion fails.
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InsertOne(ctx context.Context, userModel *UserModel) (interface{}, error)
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// FindByUsername queries user by username. If a user with specified username exists,
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// the user will be returned. Otherwise, error will be returned.
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FindByUsername(ctx context.Context, username string) (*UserModel, error)
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// UpdateDisplayNameByID updates a user with the specified ID with a new display name.
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// If there is a user matches the query, it will return true. Error will be returned
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// only when error occurs while accessing the database.
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UpdateDisplayNameByID(ctx context.Context, displayName string, id primitive.ObjectID) (bool, error)
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// DeleteByCity deletes users that have `city` value match the parameter and returns
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// the match count. The error will be returned only when error occurs while accessing
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// the database. This is a MANY mode because the first return type is an integer.
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DeleteByCity(ctx context.Context, city string) (int, error)
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// CountByCity returns the number of rows that match the given city parameter. If an
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// error occurs while accessing the database, error value will be returned.
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CountByCity(ctx context.Context, city string) (int, error)
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}
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