89 lines
2.1 KiB
Go
89 lines
2.1 KiB
Go
package service
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import (
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"Portifolio/internal/model"
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"database/sql"
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"encoding/json"
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"net/http"
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_ "github.com/mattn/go-sqlite3"
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)
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type Service struct {
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db *sql.DB
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}
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func (s *Service) AddCurrencyHandler() http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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var input model.CurrencyInput
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if err := json.NewDecoder(r.Body).Decode(&input); err != nil {
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http.Error(w, "invalid json", http.StatusBadRequest)
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return
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}
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id, err := s.InsertCurrency(input)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(http.StatusCreated)
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json.NewEncoder(w).Encode(map[string]any{"status": "created", "id": id})
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}
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}
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func (s *Service) GetCurrenciesHandler() http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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currencies, err := s.GetAllCurrencies()
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(currencies)
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}
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}
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func (s *Service) InsertCurrency(input model.CurrencyInput) (int, error) {
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res, err := s.db.Exec(
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`INSERT INTO currencies (code, name) VALUES (?, ?)`,
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input.Code, input.Name,
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)
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if err != nil {
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return 0, err
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}
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id, err := res.LastInsertId()
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return int(id), err
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}
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func (s *Service) GetCurrencyByCode(code string) (*model.Currency, error) {
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c := &model.Currency{}
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err := s.db.QueryRow(
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`SELECT id, code, name FROM currencies WHERE code = ?`, code,
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).Scan(&c.ID, &c.Code, &c.Name)
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if err == sql.ErrNoRows {
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return nil, nil
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}
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return c, err
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}
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func (s *Service) GetAllCurrencies() ([]model.Currency, error) {
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rows, err := s.db.Query(`SELECT id, code, name FROM currencies ORDER BY code`)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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var currencies []model.Currency
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for rows.Next() {
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var c model.Currency
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if err := rows.Scan(&c.ID, &c.Code, &c.Name); err != nil {
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return nil, err
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}
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currencies = append(currencies, c)
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}
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return currencies, rows.Err()
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}
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