前后端基本架构和完全excel表的解析及统计图表的生成以及excel表的到出

frontend/src/context/AuthContext.tsx

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+import React, { createContext, useContext, useEffect, useState } from 'react';
+import { supabase } from '@/db/supabase';
+import { User } from '@supabase/supabase-js';
+import { Profile } from '@/types/types';
+
+interface AuthContextType {
+  user: User | null;
+  profile: Profile | null;
+  signIn: (email: string, password: string) => Promise<{ error: any }>;
+  signUp: (email: string, password: string) => Promise<{ error: any }>;
+  signOut: () => Promise<{ error: any }>;
+  loading: boolean;
+}
+
+const AuthContext = createContext<AuthContextType | undefined>(undefined);
+
+export const AuthProvider: React.FC<{ children: React.ReactNode }> = ({ children }) => {
+  const [user, setUser] = useState<User | null>(null);
+  const [profile, setProfile] = useState<Profile | null>(null);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    // Check active sessions and sets the user
+    supabase.auth.getSession().then(({ data: { session } }) => {
+      setUser(session?.user ?? null);
+      if (session?.user) fetchProfile(session.user.id);
+      else setLoading(false);
+    });
+
+    // Listen for changes on auth state (sign in, sign out, etc.)
+    const { data: { subscription } } = supabase.auth.onAuthStateChange((_event, session) => {
+      setUser(session?.user ?? null);
+      if (session?.user) fetchProfile(session.user.id);
+      else {
+        setProfile(null);
+        setLoading(false);
+      }
+    });
+
+    return () => subscription.unsubscribe();
+  }, []);
+
+  const fetchProfile = async (uid: string) => {
+    try {
+      const { data, error } = await supabase
+        .from('profiles')
+        .select('*')
+        .eq('id', uid)
+        .maybeSingle();
+      
+      if (error) throw error;
+      setProfile(data);
+    } catch (err) {
+      console.error('Error fetching profile:', err);
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const signIn = async (email: string, password: string) => {
+    return await supabase.auth.signInWithPassword({ email, password });
+  };
+
+  const signUp = async (email: string, password: string) => {
+    return await supabase.auth.signUp({ email, password });
+  };
+
+  const signOut = async () => {
+    return await supabase.auth.signOut();
+  };
+
+  return (
+    <AuthContext.Provider value={{ user, profile, signIn, signUp, signOut, loading }}>
+      {children}
+    </AuthContext.Provider>
+  );
+};
+
+export const useAuth = () => {
+  const context = useContext(AuthContext);
+  if (context === undefined) {
+    throw new Error('useAuth must be used within an AuthProvider');
+  }
+  return context;
+};