This page listed the basic feature requirements of this system.

Auth

• Sign In
  • Email Password Sign In
  • TOTP Sign In
• Sign Up
  • Email Addresss Validation
  • Email Verification
  • Captcha
• 2FA
• Remove user

User Profile

Edit Profile

• Edit description
• Add / remove contact info
• Verify campus ID

Get Profile Info

• Get user items
• Get user trade histories

Item

Management

• Create / remove item
  • Name
  • Image
  • Description
• Show / hide item
• Remove item

View

• Get item info
• Share item
  • via link
  • via image with QRCode link to item page
• Shared link preview support

Questions

• Get questions
• Create question
• Answer questions
• Subscribe questions

Discover

• Search item
  • by name
  • by tag
• Recommend item
  • Based on view history
  • Based on trade history
  • Based on current trend
  • Based on newly published

[!note] The personalized recommendation could be implemented using algorithms like UBCF.

Trade

• Start transaction
• Accept transaction
• Confirm transaction
• Complete transaction
• Cancel transaction
• Transaction auto-close & auto-confirm