feat: 基础框架搭建完毕

internal/service/account.go

@@ -0,0 +1,70 @@
+package service
+
+import (
+	"context"
+	"strings"
+	"unicode/utf8"
+
+	"github.com/google/uuid"
+
+	"git.sundynix.cn/Blizzard/Veyra/internal/apperror"
+	"git.sundynix.cn/Blizzard/Veyra/internal/model"
+)
+
+type AccountRepository interface {
+	Create(context.Context, model.Account, *model.CashEntry) (model.AccountSummary, error)
+	List(context.Context, string) ([]model.AccountSummary, error)
+	Get(context.Context, string, string) (model.AccountSummary, error)
+}
+
+type AccountService struct{ repo AccountRepository }
+
+func NewAccountService(repo AccountRepository) *AccountService { return &AccountService{repo: repo} }
+
+func (s *AccountService) Create(ctx context.Context, userID, mode, name string, initialCash *string) (model.AccountSummary, error) {
+	if s.repo == nil {
+		return model.AccountSummary{}, apperror.ErrUnavailable
+	}
+	name = strings.TrimSpace(name)
+	if name == "" || utf8.RuneCountInString(name) > 80 {
+		return model.AccountSummary{}, apperror.ErrInvalidInput
+	}
+	account := model.Account{ID: uuid.NewString(), UserID: userID, Mode: mode, Name: name, Currency: "CNY", LedgerStatus: "INCOMPLETE"}
+	var entry *model.CashEntry
+	switch mode {
+	case "simulation":
+		if initialCash == nil {
+			return model.AccountSummary{}, apperror.ErrInvalidInput
+		}
+		amount, err := model.ParseMoney(*initialCash)
+		if err != nil {
+			return model.AccountSummary{}, err
+		}
+		account.LedgerStatus = "COMPLETE"
+		entry = &model.CashEntry{ID: uuid.NewString(), AccountID: account.ID, EntryType: "INITIAL", AmountMinor: amount}
+	case "manual_real":
+		if initialCash != nil {
+			return model.AccountSummary{}, apperror.ErrInvalidInput
+		}
+	default:
+		return model.AccountSummary{}, apperror.ErrInvalidInput
+	}
+	return s.repo.Create(ctx, account, entry)
+}
+
+func (s *AccountService) List(ctx context.Context, userID string) ([]model.AccountSummary, error) {
+	if s.repo == nil {
+		return nil, apperror.ErrUnavailable
+	}
+	return s.repo.List(ctx, userID)
+}
+
+func (s *AccountService) Get(ctx context.Context, userID, accountID string) (model.AccountSummary, error) {
+	if s.repo == nil {
+		return model.AccountSummary{}, apperror.ErrUnavailable
+	}
+	if _, err := uuid.Parse(accountID); err != nil {
+		return model.AccountSummary{}, apperror.ErrNotFound
+	}
+	return s.repo.Get(ctx, userID, accountID)
+}