chore: sync

2026-03-18 22:06:17 +08:00
parent 9b04338e5f
commit 7cb7aeabcb
28 changed files with 3634 additions and 0 deletions
--- a/mengyastore-backend/internal/storage/jsonstore.go
+++ b/mengyastore-backend/internal/storage/jsonstore.go
@@ -0,0 +1,192 @@
+package storage
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"sync"
+	"time"
+
+	"github.com/google/uuid"
+
+	"mengyastore-backend/internal/models"
+)
+
+type JSONStore struct {
+	path string
+	mu   sync.Mutex
+}
+
+func NewJSONStore(path string) (*JSONStore, error) {
+	if err := ensureFile(path); err != nil {
+		return nil, err
+	}
+	return &JSONStore{path: path}, nil
+}
+
+func ensureFile(path string) error {
+	dir := filepath.Dir(path)
+	if err := os.MkdirAll(dir, 0o755); err != nil {
+		return fmt.Errorf("mkdir data dir: %w", err)
+	}
+	if _, err := os.Stat(path); err == nil {
+		return nil
+	} else if !os.IsNotExist(err) {
+		return fmt.Errorf("stat data file: %w", err)
+	}
+
+	initial := []models.Product{}
+	bytes, err := json.MarshalIndent(initial, "", "  ")
+	if err != nil {
+		return fmt.Errorf("init json: %w", err)
+	}
+	if err := os.WriteFile(path, bytes, 0o644); err != nil {
+		return fmt.Errorf("write init json: %w", err)
+	}
+	return nil
+}
+
+func (s *JSONStore) ListAll() ([]models.Product, error) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	return s.readAll()
+}
+
+func (s *JSONStore) ListActive() ([]models.Product, error) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	items, err := s.readAll()
+	if err != nil {
+		return nil, err
+	}
+	active := make([]models.Product, 0, len(items))
+	for _, item := range items {
+		if item.Active {
+			active = append(active, item)
+		}
+	}
+	return active, nil
+}
+
+func (s *JSONStore) Create(p models.Product) (models.Product, error) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	items, err := s.readAll()
+	if err != nil {
+		return models.Product{}, err
+	}
+	p = normalizeProduct(p)
+	p.ID = uuid.NewString()
+	now := time.Now()
+	p.CreatedAt = now
+	p.UpdatedAt = now
+	items = append(items, p)
+	if err := s.writeAll(items); err != nil {
+		return models.Product{}, err
+	}
+	return p, nil
+}
+
+func (s *JSONStore) Update(id string, patch models.Product) (models.Product, error) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	items, err := s.readAll()
+	if err != nil {
+		return models.Product{}, err
+	}
+	for i, item := range items {
+		if item.ID == id {
+			item.Name = patch.Name
+			item.Price = patch.Price
+			item.Quantity = patch.Quantity
+			item.CoverURL = patch.CoverURL
+			item.ScreenshotURLs = normalizeProduct(patch).ScreenshotURLs
+			item.Description = patch.Description
+			item.Active = patch.Active
+			item.UpdatedAt = time.Now()
+			items[i] = item
+			if err := s.writeAll(items); err != nil {
+				return models.Product{}, err
+			}
+			return item, nil
+		}
+	}
+	return models.Product{}, fmt.Errorf("product not found")
+}
+
+func (s *JSONStore) Toggle(id string, active bool) (models.Product, error) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	items, err := s.readAll()
+	if err != nil {
+		return models.Product{}, err
+	}
+	for i, item := range items {
+		if item.ID == id {
+			item.Active = active
+			item.UpdatedAt = time.Now()
+			items[i] = item
+			if err := s.writeAll(items); err != nil {
+				return models.Product{}, err
+			}
+			return item, nil
+		}
+	}
+	return models.Product{}, fmt.Errorf("product not found")
+}
+
+func (s *JSONStore) Delete(id string) error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	items, err := s.readAll()
+	if err != nil {
+		return err
+	}
+	filtered := make([]models.Product, 0, len(items))
+	for _, item := range items {
+		if item.ID != id {
+			filtered = append(filtered, item)
+		}
+	}
+	if err := s.writeAll(filtered); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (s *JSONStore) readAll() ([]models.Product, error) {
+	bytes, err := os.ReadFile(s.path)
+	if err != nil {
+		return nil, fmt.Errorf("read products: %w", err)
+	}
+	var items []models.Product
+	if err := json.Unmarshal(bytes, &items); err != nil {
+		return nil, fmt.Errorf("parse products: %w", err)
+	}
+	for i, item := range items {
+		items[i] = normalizeProduct(item)
+	}
+	return items, nil
+}
+
+func (s *JSONStore) writeAll(items []models.Product) error {
+	for i, item := range items {
+		items[i] = normalizeProduct(item)
+	}
+	bytes, err := json.MarshalIndent(items, "", "  ")
+	if err != nil {
+		return fmt.Errorf("encode products: %w", err)
+	}
+	if err := os.WriteFile(s.path, bytes, 0o644); err != nil {
+		return fmt.Errorf("write products: %w", err)
+	}
+	return nil
+}
+
+func normalizeProduct(item models.Product) models.Product {
+	if item.ScreenshotURLs == nil {
+		item.ScreenshotURLs = []string{}
+	}
+	return item
+}