feat(#21): contas bancárias e patrimônio consolidado

CRUD de contas (corrente/poupança/investimento/cartão) com saldo calculado automaticamente. account_id nullable em transactions. Widget patrimônio no dashboard. Tela /contas. Seletor de conta nas transações manuais. Co-Authored-By: Claude Sonnet 4.6 <[email protected]>
2026-05-26 21:34:56 -03:00
parent fbcb1d76aa
commit 9a964423fd
21 changed files with 667 additions and 24 deletions
@@ -0,0 +1,121 @@
+package repository
+
+import (
+	"context"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+
+	"financeiro-carvalho/internal/model"
+)
+
+type AccountRepository struct {
+	pool *pgxpool.Pool
+}
+
+func NewAccountRepository(pool *pgxpool.Pool) *AccountRepository {
+	return &AccountRepository{pool: pool}
+}
+
+func (r *AccountRepository) List(ctx context.Context) ([]model.Account, error) {
+	rows, err := r.pool.Query(ctx, `
+		SELECT
+			a.id, a.name, a.type, a.initial_balance,
+			a.created_at::text, a.updated_at::text,
+			a.initial_balance
+				+ COALESCE(SUM(CASE WHEN t.type = 'income'  THEN t.amount ELSE 0 END), 0)
+				- COALESCE(SUM(CASE WHEN t.type = 'expense' THEN t.amount ELSE 0 END), 0)
+			AS balance
+		FROM accounts a
+		LEFT JOIN transactions t ON t.account_id = a.id
+		GROUP BY a.id
+		ORDER BY a.created_at
+	`)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var out []model.Account
+	for rows.Next() {
+		var a model.Account
+		if err := rows.Scan(&a.ID, &a.Name, &a.Type, &a.InitialBalance, &a.CreatedAt, &a.UpdatedAt, &a.Balance); err != nil {
+			return nil, err
+		}
+		out = append(out, a)
+	}
+	return out, rows.Err()
+}
+
+func (r *AccountRepository) GetByID(ctx context.Context, id int) (*model.Account, error) {
+	var a model.Account
+	err := r.pool.QueryRow(ctx, `
+		SELECT
+			a.id, a.name, a.type, a.initial_balance,
+			a.created_at::text, a.updated_at::text,
+			a.initial_balance
+				+ COALESCE(SUM(CASE WHEN t.type = 'income'  THEN t.amount ELSE 0 END), 0)
+				- COALESCE(SUM(CASE WHEN t.type = 'expense' THEN t.amount ELSE 0 END), 0)
+			AS balance
+		FROM accounts a
+		LEFT JOIN transactions t ON t.account_id = a.id
+		WHERE a.id = $1
+		GROUP BY a.id
+	`, id).Scan(&a.ID, &a.Name, &a.Type, &a.InitialBalance, &a.CreatedAt, &a.UpdatedAt, &a.Balance)
+	if err != nil {
+		return nil, err
+	}
+	return &a, nil
+}
+
+func (r *AccountRepository) Create(ctx context.Context, in model.AccountInput) (*model.Account, error) {
+	var a model.Account
+	err := r.pool.QueryRow(ctx, `
+		INSERT INTO accounts (name, type, initial_balance)
+		VALUES ($1, $2, $3)
+		RETURNING id, name, type, initial_balance, created_at::text, updated_at::text
+	`, in.Name, in.Type, in.InitialBalance).
+		Scan(&a.ID, &a.Name, &a.Type, &a.InitialBalance, &a.CreatedAt, &a.UpdatedAt)
+	if err != nil {
+		return nil, err
+	}
+	a.Balance = a.InitialBalance
+	return &a, nil
+}
+
+func (r *AccountRepository) Update(ctx context.Context, id int, in model.AccountInput) (*model.Account, error) {
+	row := r.pool.QueryRow(ctx, `
+		UPDATE accounts SET name=$1, type=$2, initial_balance=$3, updated_at=NOW()
+		WHERE id=$4
+		RETURNING id, name, type, initial_balance, created_at::text, updated_at::text
+	`, in.Name, in.Type, in.InitialBalance, id)
+	var a model.Account
+	if err := row.Scan(&a.ID, &a.Name, &a.Type, &a.InitialBalance, &a.CreatedAt, &a.UpdatedAt); err != nil {
+		return nil, err
+	}
+	// recalculate balance
+	full, err := r.GetByID(ctx, a.ID)
+	if err != nil {
+		return nil, err
+	}
+	return full, nil
+}
+
+func (r *AccountRepository) Delete(ctx context.Context, id int) error {
+	_, err := r.pool.Exec(ctx, `DELETE FROM accounts WHERE id = $1`, id)
+	return err
+}
+
+func (r *AccountRepository) TotalPatrimony(ctx context.Context) (float64, error) {
+	var total float64
+	err := r.pool.QueryRow(ctx, `
+		SELECT COALESCE(SUM(
+			a.initial_balance
+				+ COALESCE((
+					SELECT SUM(CASE WHEN type='income' THEN amount ELSE -amount END)
+					FROM transactions WHERE account_id = a.id
+				  ), 0)
+		), 0)
+		FROM accounts a
+	`).Scan(&total)
+	return total, err
+}
@@ -28,7 +28,7 @@ func NewManualTransactionRepository(db *pgxpool.Pool) ManualTransactionRepositor

 func (r *manualTxRepo) List(ctx context.Context, month string) ([]model.Transaction, error) {
 	query := `
-		SELECT id, date::text, amount, description, type, source, category_id, created_at, updated_at
+		SELECT id, date::text, amount, description, type, source, category_id, account_id, created_at, updated_at
 		FROM transactions`
 	args := []any{}
 	if month != "" {
@@ -46,7 +46,7 @@ func (r *manualTxRepo) List(ctx context.Context, month string) ([]model.Transact
 	var out []model.Transaction
 	for rows.Next() {
 		var t model.Transaction
-		if err := rows.Scan(&t.ID, &t.Date, &t.Amount, &t.Description, &t.Type, &t.Source, &t.CategoryID, &t.CreatedAt, &t.UpdatedAt); err != nil {
+		if err := rows.Scan(&t.ID, &t.Date, &t.Amount, &t.Description, &t.Type, &t.Source, &t.CategoryID, &t.AccountID, &t.CreatedAt, &t.UpdatedAt); err != nil {
 			return nil, err
 		}
 		out = append(out, t)
@@ -57,9 +57,9 @@ func (r *manualTxRepo) List(ctx context.Context, month string) ([]model.Transact
 func (r *manualTxRepo) GetByID(ctx context.Context, id int) (*model.Transaction, error) {
 	var t model.Transaction
 	err := r.db.QueryRow(ctx, `
-		SELECT id, date::text, amount, description, type, source, category_id, created_at, updated_at
+		SELECT id, date::text, amount, description, type, source, category_id, account_id, created_at, updated_at
 		FROM transactions WHERE id = $1`, id).
-		Scan(&t.ID, &t.Date, &t.Amount, &t.Description, &t.Type, &t.Source, &t.CategoryID, &t.CreatedAt, &t.UpdatedAt)
+		Scan(&t.ID, &t.Date, &t.Amount, &t.Description, &t.Type, &t.Source, &t.CategoryID, &t.AccountID, &t.CreatedAt, &t.UpdatedAt)
 	if errors.Is(err, pgx.ErrNoRows) {
 		return nil, ErrNotFound
 	}
@@ -69,11 +69,11 @@ func (r *manualTxRepo) GetByID(ctx context.Context, id int) (*model.Transaction,
 func (r *manualTxRepo) Create(ctx context.Context, t model.Transaction) (*model.Transaction, error) {
 	var out model.Transaction
 	err := r.db.QueryRow(ctx, `
-		INSERT INTO transactions (date, amount, description, type, source, category_id)
-		VALUES ($1, $2, $3, $4, 'manual', $5)
-		RETURNING id, date::text, amount, description, type, source, category_id, created_at, updated_at`,
-		t.Date, t.Amount, t.Description, t.Type, t.CategoryID).
-		Scan(&out.ID, &out.Date, &out.Amount, &out.Description, &out.Type, &out.Source, &out.CategoryID, &out.CreatedAt, &out.UpdatedAt)
+		INSERT INTO transactions (date, amount, description, type, source, category_id, account_id)
+		VALUES ($1, $2, $3, $4, 'manual', $5, $6)
+		RETURNING id, date::text, amount, description, type, source, category_id, account_id, created_at, updated_at`,
+		t.Date, t.Amount, t.Description, t.Type, t.CategoryID, t.AccountID).
+		Scan(&out.ID, &out.Date, &out.Amount, &out.Description, &out.Type, &out.Source, &out.CategoryID, &out.AccountID, &out.CreatedAt, &out.UpdatedAt)
 	return &out, err
 }

@@ -81,11 +81,11 @@ func (r *manualTxRepo) Update(ctx context.Context, t model.Transaction) (*model.
 	var out model.Transaction
 	err := r.db.QueryRow(ctx, `
 		UPDATE transactions
-		SET date = $1, amount = $2, description = $3, type = $4, category_id = $5, updated_at = NOW()
-		WHERE id = $6 AND source = 'manual'
-		RETURNING id, date::text, amount, description, type, source, category_id, created_at, updated_at`,
-		t.Date, t.Amount, t.Description, t.Type, t.CategoryID, t.ID).
-		Scan(&out.ID, &out.Date, &out.Amount, &out.Description, &out.Type, &out.Source, &out.CategoryID, &out.CreatedAt, &out.UpdatedAt)
+		SET date=$1, amount=$2, description=$3, type=$4, category_id=$5, account_id=$6, updated_at=NOW()
+		WHERE id=$7 AND source='manual'
+		RETURNING id, date::text, amount, description, type, source, category_id, account_id, created_at, updated_at`,
+		t.Date, t.Amount, t.Description, t.Type, t.CategoryID, t.AccountID, t.ID).
+		Scan(&out.ID, &out.Date, &out.Amount, &out.Description, &out.Type, &out.Source, &out.CategoryID, &out.AccountID, &out.CreatedAt, &out.UpdatedAt)
 	if errors.Is(err, pgx.ErrNoRows) {
 		return nil, ErrNotFound
 	}