feat: implement repo expense methods

internal/howmuch/adapter/repo/event.go

@@ -35,7 +35,7 @@ import (
 )
 
 type eventRepository struct {
-	queries sqlc.Querier
+	queries *sqlc.Queries
 }
 
 func NewEventRepository(db *sql.DB) repo.EventRepository {

internal/howmuch/adapter/repo/expense.go

@@ -1,13 +1,75 @@
+// MIT License
+//
+// Copyright (c) 2024 vinchent <vinchent@vinchent.xyz>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
 package repo
 
 import (
+	"context"
+	"database/sql"
 	"encoding/json"
+	"time"
 
 	"git.vinchent.xyz/vinchent/howmuch/internal/howmuch/adapter/repo/sqlc"
 	"git.vinchent.xyz/vinchent/howmuch/internal/howmuch/model"
+	"git.vinchent.xyz/vinchent/howmuch/internal/howmuch/usecase/repo"
 	"git.vinchent.xyz/vinchent/howmuch/internal/pkg/log"
 )
 
+type expenseRepository struct {
+	queries *sqlc.Queries
+}
+
+func NewExpenseRepository(db *sql.DB) repo.ExpenseRepository {
+	return &expenseRepository{
+		queries: sqlc.New(db),
+	}
+}
+
+// DeleteExpense implements repo.ExpenseRepository.
+func (e *expenseRepository) DeleteExpense(ctx context.Context, expenseID int) error {
+	return e.queries.DeleteExpense(ctx, int32(expenseID))
+}
+
+// DeleteTransactionsOfExpense implements repo.ExpenseRepository.
+func (e *expenseRepository) DeleteTransactionsOfExpense(ctx context.Context, expenseID int) error {
+	return e.queries.DeleteTransactionsOfExpenseID(ctx, int32(expenseID))
+}
+
+// GetExpenseByID implements repo.ExpenseRepository.
+func (e *expenseRepository) GetExpenseByID(
+	ctx context.Context,
+	expenseID int,
+) (*model.ExpenseRetrieved, error) {
+	expenseDTO, err := e.queries.GetExpenseByID(ctx, int32(expenseID))
+	if err != nil {
+		return nil, err
+	}
+	expense, err := convToExpenseRetrieved(&expenseDTO)
+	if err != nil {
+		return nil, err
+	}
+	return expense, nil
+}
+
 func convToPayments(raw json.RawMessage) ([]model.Payment, error) {
 	var paymentsRetrieved []model.PaymentRetrieved
 	err := json.Unmarshal(raw, &paymentsRetrieved)
@@ -83,3 +145,87 @@ func convToExpenseRetrieved(expenseDTO *sqlc.GetExpenseByIDRow) (*model.ExpenseR
 
 	return expenseRetrieved, nil
 }
+
+// InsertExpense implements repo.ExpenseRepository.
+func (e *expenseRepository) InsertExpense(
+	ctx context.Context,
+	expenseEntity *model.ExpenseEntity,
+) (*model.ExpenseEntity, error) {
+	expenseDTO, err := e.queries.InsertExpense(ctx, sqlc.InsertExpenseParams{
+		CreatedAt: time.Now(),
+		UpdatedAt: time.Now(),
+		Amount:    int32(expenseEntity.Amount),
+		Currency:  expenseEntity.Currency,
+		EventID:   int32(expenseEntity.EventID),
+		Name:      sql.NullString{String: expenseEntity.Name, Valid: true},
+		Place:     sql.NullString{String: expenseEntity.Place, Valid: true},
+	})
+	if err != nil {
+		return nil, err
+	}
+	return &model.ExpenseEntity{
+		ID:        int(expenseDTO.ID),
+		CreatedAt: expenseDTO.CreatedAt,
+		UpdatedAt: expenseDTO.CreatedAt,
+		Amount:    int(expenseDTO.Amount),
+		Currency:  expenseDTO.Currency,
+		EventID:   int(expenseDTO.EventID),
+		Name:      expenseDTO.Name.String,
+		Place:     expenseDTO.Place.String,
+	}, nil
+}
+
+// ListExpensesByEventID implements repo.ExpenseRepository.
+func (e *expenseRepository) ListExpensesByEventID(
+	ctx context.Context,
+	id int,
+) ([]model.ExpensesListRetrieved, error) {
+	listDTO, err := e.queries.ListExpensesByEventID(ctx, int32(id))
+	if err != nil {
+		return nil, err
+	}
+	var res []model.ExpensesListRetrieved
+	for _, dto := range listDTO {
+		elem := model.ExpensesListRetrieved{
+			ID:        int(dto.ID),
+			CreatedAt: dto.CreatedAt,
+			UpdatedAt: dto.UpdatedAt,
+			Amount:    model.MakeMoney(int(dto.Amount), model.Currency(dto.Currency)),
+			EventID:   int(dto.EventID),
+			Detail: model.ExpenseDetail{
+				Name:  dto.Name.String,
+				Place: dto.Place.String,
+			},
+		}
+		res = append(res, elem)
+	}
+	return res, nil
+}
+
+// UpdateExpenseByID implements repo.ExpenseRepository.
+func (e *expenseRepository) UpdateExpenseByID(
+	ctx context.Context,
+	expenseUpdate *model.ExpenseUpdateEntity,
+) (*model.ExpenseEntity, error) {
+	expenseDTO, err := e.queries.UpdateExpenseByID(ctx, sqlc.UpdateExpenseByIDParams{
+		ID:        int32(expenseUpdate.ID),
+		UpdatedAt: time.Now(),
+		Amount:    int32(expenseUpdate.Amount),
+		Currency:  expenseUpdate.Currency,
+		Name:      sql.NullString{String: expenseUpdate.Name, Valid: true},
+		Place:     sql.NullString{String: expenseUpdate.Place, Valid: true},
+	})
+	if err != nil {
+		return nil, err
+	}
+	return &model.ExpenseEntity{
+		ID:        int(expenseDTO.ID),
+		CreatedAt: expenseDTO.CreatedAt,
+		UpdatedAt: expenseDTO.CreatedAt,
+		Amount:    int(expenseDTO.Amount),
+		Currency:  expenseDTO.Currency,
+		EventID:   int(expenseDTO.EventID),
+		Name:      expenseDTO.Name.String,
+		Place:     expenseDTO.Place.String,
+	}, nil
+}

internal/howmuch/adapter/repo/expense_test.go

@@ -1,3 +1,25 @@
+// MIT License
+//
+// Copyright (c) 2024 vinchent <vinchent@vinchent.xyz>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
 package repo
 
 import (

internal/howmuch/adapter/repo/sqlc/expense.sql

@@ -24,14 +24,6 @@ FROM "expense" ex
 JOIN "event" ev ON ev.id = ex.event_id
 WHERE ev.id = $1;
 
--- name: ListExpensesByEventIDByUserID :many
-SELECT
-    ex.id, ex.created_at, ex.updated_at, ex.amount, ex.currency, ex.event_id,
-    ex.name, ex.place
-FROM "expense" ex
-JOIN "event" ev ON ev.id = ex.event_id
-WHERE ev.id = $1;
-
 -- name: GetExpenseByID :one
 WITH payer_transaction as (
     SELECT pt.expense_id,

internal/howmuch/adapter/repo/sqlc/expense.sql.go

@@ -183,47 +183,6 @@ func (q *Queries) ListExpensesByEventID(ctx context.Context, id int32) ([]Expens
 	return items, nil
 }
 
-const listExpensesByEventIDByUserID = `-- name: ListExpensesByEventIDByUserID :many
-SELECT
-    ex.id, ex.created_at, ex.updated_at, ex.amount, ex.currency, ex.event_id,
-    ex.name, ex.place
-FROM "expense" ex
-JOIN "event" ev ON ev.id = ex.event_id
-WHERE ev.id = $1
-`
-
-func (q *Queries) ListExpensesByEventIDByUserID(ctx context.Context, id int32) ([]Expense, error) {
-	rows, err := q.db.QueryContext(ctx, listExpensesByEventIDByUserID, id)
-	if err != nil {
-		return nil, err
-	}
-	defer rows.Close()
-	var items []Expense
-	for rows.Next() {
-		var i Expense
-		if err := rows.Scan(
-			&i.ID,
-			&i.CreatedAt,
-			&i.UpdatedAt,
-			&i.Amount,
-			&i.Currency,
-			&i.EventID,
-			&i.Name,
-			&i.Place,
-		); err != nil {
-			return nil, err
-		}
-		items = append(items, i)
-	}
-	if err := rows.Close(); err != nil {
-		return nil, err
-	}
-	if err := rows.Err(); err != nil {
-		return nil, err
-	}
-	return items, nil
-}
-
 const updateExpenseByID = `-- name: UpdateExpenseByID :one
 UPDATE "expense"
 SET updated_at = $2, amount = $3, currency = $4, name = $5, place = $6

internal/howmuch/adapter/repo/sqlc/querier.go

@@ -22,7 +22,6 @@ type Querier interface {
 	InsertUser(ctx context.Context, arg InsertUserParams) (User, error)
 	ListEventsByUserID(ctx context.Context, userID int32) ([]ListEventsByUserIDRow, error)
 	ListExpensesByEventID(ctx context.Context, id int32) ([]Expense, error)
-	ListExpensesByEventIDByUserID(ctx context.Context, id int32) ([]Expense, error)
 	UpdateEventByID(ctx context.Context, arg UpdateEventByIDParams) error
 	UpdateExpenseByID(ctx context.Context, arg UpdateExpenseByIDParams) (Expense, error)
 }

internal/howmuch/adapter/repo/user.go

@@ -34,7 +34,7 @@ import (
 )
 
 type userRepository struct {
-	querier sqlc.Querier
+	querier *sqlc.Queries
 }
 
 const insertTimeout = 1 * time.Second

internal/howmuch/model/expense.go

@@ -37,7 +37,17 @@ type ExpenseRequest struct {
 // }}}
 // {{{ Response
 
-type ExpensesListResponse struct {
+type (
+	ExpenseGetResponse Expense
+	ExpenseResponse    ExpenseRetrieved
+)
+
+// }}}
+// {{{ Retrieved
+
+type ExpenseRetrieved Expense
+
+type ExpensesListRetrieved struct {
 	ID        int       `json:"id"`
 	CreatedAt time.Time `json:"created_at"`
 	UpdatedAt time.Time `json:"updated_at"`
@@ -48,16 +58,6 @@ type ExpensesListResponse struct {
 	Detail ExpenseDetail `json:"detail"`
 }
 
-type ExpenseGetResponse Expense
-
-// }}}
-// {{{ Retrieved
-
-type (
-	ExpensesListRetrieved ExpensesListResponse
-	ExpenseRetrieved      Expense
-)
-
 type PaymentRetrieved struct {
 	PayerID        int    `json:"payer_id"`
 	PayerFirstName string `json:"payer_first_name"`
@@ -91,6 +91,18 @@ type ExpenseEntity struct {
 	Place string
 }
 
+type ExpenseUpdateEntity struct {
+	ID        int
+	UpdatedAt time.Time
+
+	Amount   int
+	Currency string
+
+	// Expense Detail
+	Name  string
+	Place string
+}
+
 // }}}
 // {{{ Domain Models
 

internal/howmuch/usecase/repo/event.go

@@ -38,25 +38,21 @@ type EventRepository interface {
 
 	// related to events of a user
 	ListEventsByUserID(ctx context.Context, userID int) ([]model.EventListRetrieved, error)
+
+	// CheckParticipation(ctx context.Context, userID, eventID int) error
 }
 
 type ExpenseRepository interface {
-	Create()
-	Update()
-	Delete() // Delete also the related transactions
-
-	ListExpensesByUserID()
-	GetByID()
-}
-
-type ParticipationRepository interface {
-	Create()
-	Delete()
-	CheckParticipation(ctx context.Context, userID, eventID int) error
-}
-
-type TransactionRepository interface {
-	Create()
-	// Delete() might be handled in the Expense
-	// Transaction is a joined entity, we don't provide diret read operation
+	DeleteExpense(ctx context.Context, expenseID int) error
+	DeleteTransactionsOfExpense(ctx context.Context, expenseID int) error
+	GetExpenseByID(ctx context.Context, expenseID int) (*model.ExpenseRetrieved, error)
+	InsertExpense(
+		ctx context.Context,
+		expenseEntity *model.ExpenseEntity,
+	) (*model.ExpenseEntity, error)
+	ListExpensesByEventID(ctx context.Context, id int) ([]model.ExpensesListRetrieved, error)
+	UpdateExpenseByID(
+		ctx context.Context,
+		expenseUpdate *model.ExpenseUpdateEntity,
+	) (*model.ExpenseEntity, error)
 }

internal/howmuch/usecase/usecase/event.go

@@ -33,11 +33,9 @@ import (
 )
 
 type eventUsecase struct {
-	userUC            User
-	eventRepo         repo.EventRepository
-	expenseRepo       repo.ExpenseRepository
-	participationRepo repo.ParticipationRepository
-	transactionRepo   repo.TransactionRepository
+	userUC      User
+	eventRepo   repo.EventRepository
+	expenseRepo repo.ExpenseRepository
 
 	dbRepo repo.DBRepository
 }
@@ -55,11 +53,9 @@ func NewEventUsecase(
 	uuc User,
 	ev repo.EventRepository,
 	ex repo.ExpenseRepository,
-	pa repo.ParticipationRepository, // XXX: Might be handled in event
-	tr repo.TransactionRepository, // XXX: Might be handled in event
 	db repo.DBRepository,
 ) Event {
-	return &eventUsecase{uuc, ev, ex, pa, tr, db}
+	return &eventUsecase{uuc, ev, ex, db}
 }
 
 func (evuc *eventUsecase) CreateEvent(
@@ -133,10 +129,10 @@ func (evuc *eventUsecase) GetEventDetail(
 	userID, eventID int,
 ) (*model.EventInfoResponse, error) {
 	// Check if the user has the right to get this event
-	err := evuc.participationRepo.CheckParticipation(ctx, userID, eventID)
-	if err != nil {
-		return nil, ErrNoParticipation
-	}
+	// err := evuc.participationRepo.CheckParticipation(ctx, userID, eventID)
+	// if err != nil {
+	// 	return nil, ErrNoParticipation
+	// }
 
 	// Get the eventDetail
 	// TODO: This can also be put into the cache