更新项目架构与存储适配器，添加用户认证功能

本次提交包含以下主要更改： 1. 更新 `.gitignore` 文件，添加对 `node_modules` 和环境变量文件的忽略。 2. 修改 `.gitmodules` 文件，替换为新的子模块 `cloudflare-worker`。 3. 新增 `ARCHITECTURE.md` 和 `PROJECT_REFACTOR_PLAN.md` 文档，详细描述项目架构和改造计划。 4. 实现用户认证功能，添加 GitHub OAuth 处理逻辑，支持 JWT 生成与解析。 5. 引入新的存储接口 `CanvasStore`，并实现相应的存储逻辑，支持用户画布的增删改查。 6. 更新 `main.go` 文件，整合新的认证与存储逻辑，优化路由设置。这些更改旨在提升项目的可扩展性与用户体验，支持多用户环境下的画布管理与存储。
2026-06-03 22:02:57 +00:00 · 2025-07-05 23:13:17 +08:00
parent 61abbc612b
commit 94953a5eac
26 changed files with 2078 additions and 293 deletions
@@ -0,0 +1,176 @@
+package kv
+
+import (
+	"encoding/json"
+	"excalidraw-complete/core"
+	"excalidraw-complete/handlers/auth"
+	"excalidraw-complete/middleware"
+	"excalidraw-complete/stores"
+	"io"
+	"net/http"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/render"
+	"github.com/sirupsen/logrus"
+)
+
+func HandleListCanvases(store stores.Store) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		claims, ok := r.Context().Value(middleware.ClaimsContextKey).(*auth.AppClaims)
+		if !ok {
+			render.Status(r, http.StatusUnauthorized)
+			render.JSON(w, r, map[string]string{"error": "User claims not found"})
+			return
+		}
+
+		canvases, err := store.List(r.Context(), claims.Subject)
+		if err != nil {
+			logrus.WithFields(logrus.Fields{
+				"error":  err,
+				"userID": claims.Subject,
+			}).Error("Failed to list canvases")
+			render.Status(r, http.StatusInternalServerError)
+			render.JSON(w, r, map[string]string{"error": "Failed to list canvases"})
+			return
+		}
+
+		// If canvases is nil (e.g., user has no canvases), return an empty slice instead of null.
+		if canvases == nil {
+			canvases = []*core.Canvas{}
+		}
+
+		render.JSON(w, r, canvases)
+	}
+}
+
+func HandleGetCanvas(store stores.Store) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		claims, ok := r.Context().Value(middleware.ClaimsContextKey).(*auth.AppClaims)
+		if !ok {
+			render.Status(r, http.StatusUnauthorized)
+			render.JSON(w, r, map[string]string{"error": "User claims not found"})
+			return
+		}
+
+		key := chi.URLParam(r, "key")
+		if key == "" {
+			render.Status(r, http.StatusBadRequest)
+			render.JSON(w, r, map[string]string{"error": "Canvas key is required"})
+			return
+		}
+
+		canvas, err := store.Get(r.Context(), claims.Subject, key)
+		if err != nil {
+			logrus.WithFields(logrus.Fields{
+				"error":  err,
+				"userID": claims.Subject,
+				"key":    key,
+			}).Warn("Failed to get canvas")
+			// This could be a not found error or a real server error.
+			// For simplicity, we'll return 404, but in a real app, you might want to distinguish.
+			render.Status(r, http.StatusNotFound)
+			render.JSON(w, r, map[string]string{"error": "Canvas not found"})
+			return
+		}
+
+		// The canvas data is returned as raw bytes.
+		w.Header().Set("Content-Type", "application/json")
+		w.Write(canvas.Data)
+	}
+}
+
+func HandleSaveCanvas(store stores.Store) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		claims, ok := r.Context().Value(middleware.ClaimsContextKey).(*auth.AppClaims)
+		if !ok {
+			render.Status(r, http.StatusUnauthorized)
+			render.JSON(w, r, map[string]string{"error": "User claims not found"})
+			return
+		}
+
+		key := chi.URLParam(r, "key")
+		if key == "" {
+			render.Status(r, http.StatusBadRequest)
+			render.JSON(w, r, map[string]string{"error": "Canvas key is required"})
+			return
+		}
+
+		body, err := io.ReadAll(r.Body)
+		if err != nil {
+			logrus.WithFields(logrus.Fields{
+				"error": err,
+				"key":   key,
+			}).Error("Failed to read request body")
+			render.Status(r, http.StatusInternalServerError)
+			render.JSON(w, r, map[string]string{"error": "Failed to read request body"})
+			return
+		}
+		defer r.Body.Close()
+
+		// For simplicity, we use the key as the name. A more advanced implementation
+		// might parse a name from the body or have a separate field.
+		var canvasData struct {
+			AppState struct {
+				Name string `json:"name"`
+			} `json:"appState"`
+		}
+		// We make a copy of the body because json.Unmarshal will consume the reader.
+		bodyCopy := make([]byte, len(body))
+		copy(bodyCopy, body)
+
+		canvasName := key // Default to key
+		if err := json.Unmarshal(bodyCopy, &canvasData); err == nil && canvasData.AppState.Name != "" {
+			canvasName = canvasData.AppState.Name
+		}
+		canvas := &core.Canvas{
+			ID:     key,
+			UserID: claims.Subject,
+			Name:   canvasName,
+			Data:   body,
+		}
+
+		if err := store.Save(r.Context(), canvas); err != nil {
+			logrus.WithFields(logrus.Fields{
+				"error":  err,
+				"userID": claims.Subject,
+				"key":    key,
+			}).Error("Failed to save canvas")
+			render.Status(r, http.StatusInternalServerError)
+			render.JSON(w, r, map[string]string{"error": "Failed to save canvas"})
+			return
+		}
+
+		render.Status(r, http.StatusOK)
+	}
+}
+
+func HandleDeleteCanvas(store stores.Store) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		claims, ok := r.Context().Value(middleware.ClaimsContextKey).(*auth.AppClaims)
+		if !ok {
+			render.Status(r, http.StatusUnauthorized)
+			render.JSON(w, r, map[string]string{"error": "User claims not found"})
+			return
+		}
+
+		key := chi.URLParam(r, "key")
+		if key == "" {
+			render.Status(r, http.StatusBadRequest)
+			render.JSON(w, r, map[string]string{"error": "Canvas key is required"})
+			return
+		}
+
+		if err := store.Delete(r.Context(), claims.Subject, key); err != nil {
+			logrus.WithFields(logrus.Fields{
+				"error":  err,
+				"userID": claims.Subject,
+				"key":    key,
+			}).Error("Failed to delete canvas")
+			render.Status(r, http.StatusInternalServerError)
+			render.JSON(w, r, map[string]string{"error": "Failed to delete canvas"})
+			return
+		}
+
+		render.Status(r, http.StatusOK)
+	}
+}