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feat: finish task #3

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@007WS-cry 007WS-cry commented Sep 26, 2024

Summary by CodeRabbit

Release Notes

  • New Features

    • Introduced user registration and login functionalities.
    • Added question management capabilities, including asking, updating, answering, and searching questions.
    • Implemented session management for user authentication.
  • Configuration

    • Added a configuration file for database connection settings.
  • Server Setup

    • Established a web server using the Gin framework, serving HTML pages for user interactions.
  • Error Handling

    • Implemented error handling middleware for improved user feedback.
  • Documentation

    • Added comprehensive API documentation detailing endpoints and their functionalities.

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coderabbitai bot commented Sep 26, 2024

Walkthrough

The changes introduce a new web application that utilizes the Gin framework for user authentication and question management. Key features include user registration and login functionalities, question submission, updating, answering, and searching. A configuration file for database connection settings is added, along with a Go module declaration. The application structure includes handlers for authentication and question management, ensuring proper session handling and error management.

Changes

Files Change Summary
007WS-cry/auth_handler.go Introduces user registration and login functionalities, defining a User struct and implementing registerHandler and loginHandler functions for handling user data and sessions.
007WS-cry/config.yaml Adds database connection settings including username, password, host, port, and database name for MySQL connection.
007WS-cry/go.mod Establishes a new Go module named myapp, specifies Go version 1.23.1, and includes the Gin framework as a dependency along with several indirect dependencies for various functionalities.
007WS-cry/main.go Implements a web server using Gin, initializes routes for authentication and question management, and sets up error handling middleware. Defines a Config struct for database parameters.
007WS-cry/question_handler.go Introduces HTTP handlers for managing questions, defining a Question struct and implementing functions for asking, updating, answering, and searching questions while ensuring session validation.
007WS-cry/readme.md Adds comprehensive API documentation detailing various endpoints for user registration, question management, and their respective request parameters and response formats.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant AuthHandler
    participant DB
    participant Session

    User->>AuthHandler: Register/Login
    AuthHandler->>DB: Validate credentials
    DB-->>AuthHandler: Return user data
    AuthHandler->>Session: Create session
    Session-->>User: Return session cookie
Loading
sequenceDiagram
    participant User
    participant QuestionHandler
    participant DB
    participant Session

    User->>QuestionHandler: Submit Question
    QuestionHandler->>Session: Validate session
    Session-->>QuestionHandler: Session valid
    QuestionHandler->>DB: Insert question
    DB-->>QuestionHandler: Confirm insertion
    QuestionHandler-->>User: Return success message
Loading

Poem

🐰 In a world where questions bloom,
A rabbit hops to clear the gloom.
With users logged and answers bright,
Our app now shines, a true delight!
So hop along, come join the fun,
With every click, new knowledge won! 🌟


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Actionable comments posted: 15

🧹 Outside diff range and nitpick comments (6)
007WS-cry/config.yaml (1)

1-6: Fix minor formatting issues

The static analysis tool has identified two minor formatting issues:

  1. Trailing spaces on line 1.
  2. Missing newline character at the end of the file.

While these don't affect functionality, addressing them improves code consistency and adheres to common coding standards.

Please apply the following changes:

  1. Remove the trailing space after database: on line 1.
  2. Add a newline character at the end of the file (after line 6).

Many text editors can be configured to automatically trim trailing whitespace and add a final newline. Consider enabling these features to prevent similar issues in the future.

🧰 Tools
🪛 yamllint

[error] 1-1: trailing spaces

(trailing-spaces)


[error] 6-6: no new line character at the end of file

(new-line-at-end-of-file)

007WS-cry/main.go (3)

14-22: Config struct is well-defined, but consider security implications.

The Config struct is well-organized and uses appropriate YAML tags for unmarshaling. However, storing database credentials in memory could pose a security risk.

Consider using environment variables or a secure secret management system for sensitive information like database credentials. This approach enhances security by keeping sensitive data out of the application's memory and configuration files.


113-126: Error handler is well-structured but could benefit from logging.

The errorHandler function correctly differentiates between different types of errors and responds appropriately. However, it could benefit from more detailed logging.

Consider adding logging to the error handler. This will help with debugging and monitoring:

func errorHandler(c *gin.Context) {
    c.Next()
    if len(c.Errors) > 0 {
        err := c.Errors[0]
        log.Printf("Error occurred: %v", err)
        switch err.Type {
        case gin.ErrorTypePublic:
            c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
        case gin.ErrorTypePrivate:
            c.JSON(http.StatusUnauthorized, gin.H{"error": err.Error()})
        default:
            log.Printf("Internal Server Error: %v", err)
            c.JSON(http.StatusInternalServerError, gin.H{"error": "内部服务器错误"})
        }
    }
}

This addition will log all errors, with extra detail for internal server errors.


1-126: Overall, good implementation with room for improvement.

This file successfully implements a web server with user authentication and question management functionalities using the Gin framework. The code is generally well-structured and follows good practices. However, there are several areas where it could be improved:

  1. Code Organization: The main function is quite long and could be broken down into smaller, more focused functions for better readability and maintainability.

  2. Security: Consider using environment variables or a secure secret management system for sensitive information like database credentials.

  3. Error Handling and Logging: While basic error handling is in place, it could be more robust. Adding more detailed logging would aid in debugging and monitoring.

  4. Configuration: More elements could be made configurable, such as the server port.

  5. Testing: There are no tests included. Consider adding unit tests for the various handlers and functions.

Addressing these points will significantly improve the code's quality, maintainability, and robustness.

As the project grows, consider splitting the code into multiple files (e.g., separate files for configuration, database operations, and route handlers). This will improve organization and make the codebase easier to navigate and maintain.

007WS-cry/question_handler.go (2)

35-41: Use ShouldBindJSON instead of ShouldBindWith for simplicity

In the handlers, you are using c.ShouldBindWith(&req, binding.JSON). Since you are always binding JSON data, you can use c.ShouldBindJSON(&req) for simplicity.

Apply this diff to simplify the binding:

-if err := c.ShouldBindWith(&req, binding.JSON); err != nil {
+if err := c.ShouldBindJSON(&req); err != nil {

Repeat this change for all instances where ShouldBindWith is used with binding.JSON.


158-161: Handle potential database scan errors more gracefully

When scanning rows in the searchHandler, if an error occurs, the function immediately returns an error response. However, it might be better to collect all valid results and log the error.

Consider logging the error and continuing with the next row, or collect partial results if acceptable.

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Files that changed from the base of the PR and between 2102ded and a439022.

⛔ Files ignored due to path filters (1)
  • 007WS-cry/go.sum is excluded by !**/*.sum
📒 Files selected for processing (5)
  • 007WS-cry/auth_handler.go (1 hunks)
  • 007WS-cry/config.yaml (1 hunks)
  • 007WS-cry/go.mod (1 hunks)
  • 007WS-cry/main.go (1 hunks)
  • 007WS-cry/question_handler.go (1 hunks)
🧰 Additional context used
🪛 yamllint
007WS-cry/config.yaml

[error] 1-1: trailing spaces

(trailing-spaces)


[error] 6-6: no new line character at the end of file

(new-line-at-end-of-file)

🔇 Additional comments (8)
007WS-cry/go.mod (1)

19-19: Review MySQL driver dependency

The MySQL driver (github.com/go-sql-driver/mysql) is listed as a direct dependency. Typically, this should be an indirect dependency unless you're directly importing it in your code. If you're not using it directly, consider moving it to the indirect dependencies list or removing it if it's not needed.

Run the following script to check for direct usage of the MySQL driver:

If the script doesn't find any direct imports, consider removing this dependency or marking it as indirect.

✅ Verification successful

Dependency Verification Successful

The MySQL driver (github.com/go-sql-driver/mysql) is not directly imported in the codebase. Therefore, it should be marked as an indirect dependency or removed if it is not required.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check for direct imports of the MySQL driver

# Test: Search for import statements of the MySQL driver
rg --type go 'import\s+\(\s*_\s+"github.com/go-sql-driver/mysql"'

Length of output: 67

007WS-cry/auth_handler.go (5)

1-9: LGTM: Package declaration and imports are appropriate.

The package declaration and imports are correct and suitable for the implemented functionality.


19-49: ⚠️ Potential issue

Enhance security and complete the implementation in registerHandler.

  1. Replace plain text password storage with secure hashing (e.g., using bcrypt).
  2. Remove TODO comments and complete the implementation.
  3. Improve error handling with more specific error messages.
  4. Consider adding input validation for password strength.

Here's a suggested improvement:

 func registerHandler(db *sql.DB) gin.HandlerFunc {
     return func(c *gin.Context) {
         var req struct {
             Username string `json:"username" binding:"required"`
-            Password string `json:"password" binding:"required"`
+            Password string `json:"password" binding:"required,min=8"`
         }

         if err := c.ShouldBindWith(&req, binding.JSON); err != nil {
-            c.JSON(http.StatusBadRequest, gin.H{"error": "无效的请求数据"})
+            c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid request data: " + err.Error()})
             return
         }

-        // TODO: 检查用户名是否已存在
         var existingUser User
         err := db.QueryRow("SELECT id FROM users WHERE username = ?", req.Username).Scan(&existingUser.ID)
         if err == nil {
-            c.JSON(http.StatusBadRequest, gin.H{"error": "用户名已存在"})
+            c.JSON(http.StatusConflict, gin.H{"error": "Username already exists"})
             return
+        } else if err != sql.ErrNoRows {
+            c.JSON(http.StatusInternalServerError, gin.H{"error": "Database error"})
+            return
         }

-        // TODO: 创建新用户
-        _, err = db.Exec("INSERT INTO users (username, password) VALUES (?, ?)", req.Username, req.Password)
+        hashedPassword, err := bcrypt.GenerateFromPassword([]byte(req.Password), bcrypt.DefaultCost)
+        if err != nil {
+            c.JSON(http.StatusInternalServerError, gin.H{"error": "Error hashing password"})
+            return
+        }
+
+        _, err = db.Exec("INSERT INTO users (username, password) VALUES (?, ?)", req.Username, hashedPassword)
         if err != nil {
-            c.JSON(http.StatusInternalServerError, gin.H{"error": "创建用户失败"})
+            c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to create user: " + err.Error()})
             return
         }

-        c.JSON(http.StatusOK, gin.H{"message": "用户创建成功"})
+        c.JSON(http.StatusCreated, gin.H{"message": "User created successfully"})
     }
 }

To check if prepared statements are used elsewhere in the project:

#!/bin/bash
# Check if prepared statements are used in the project
rg --type go 'db\.Prepare|stmt\.Exec|stmt\.Query'

1-78: 🛠️ Refactor suggestion

Improve overall code structure and error handling.

  1. Consider separating database operations into a separate package or file (e.g., database.go) to improve separation of concerns.
  2. Implement consistent error handling throughout the file, possibly using custom error types for different scenarios.
  3. Add logging for important events and errors to aid in debugging and monitoring.
  4. Consider implementing middleware for common operations like session validation.

Here's a high-level suggestion for restructuring:

  1. Create a database.go file:

    package main
    
    import "database/sql"
    
    type UserStore struct {
        db *sql.DB
    }
    
    func (us *UserStore) CreateUser(username string, hashedPassword []byte) error {
        // Implementation
    }
    
    func (us *UserStore) GetUser(username string) (*User, error) {
        // Implementation
    }
  2. Update auth_handler.go:

    package main
    
    import (
        "github.com/gin-gonic/gin"
        "golang.org/x/crypto/bcrypt"
    )
    
    type AuthHandler struct {
        userStore *UserStore
    }
    
    func (ah *AuthHandler) Register(c *gin.Context) {
        // Implementation using ah.userStore
    }
    
    func (ah *AuthHandler) Login(c *gin.Context) {
        // Implementation using ah.userStore
    }
  3. Implement consistent error handling:

    type AppError struct {
        Code    int
        Message string
    }
    
    func (ae *AppError) Error() string {
        return ae.Message
    }
    
    func handleError(c *gin.Context, err error) {
        if appErr, ok := err.(*AppError); ok {
            c.JSON(appErr.Code, gin.H{"error": appErr.Message})
        } else {
            c.JSON(http.StatusInternalServerError, gin.H{"error": "Internal server error"})
        }
    }

To check if there's already a separate database layer or consistent error handling:

#!/bin/bash
# Check for database-related files and custom error types
fd --type f --extension go | rg '(database|db|store)\.go'
rg --type go 'type.*Error.*struct'

51-78: ⚠️ Potential issue

Improve security and session management in loginHandler.

  1. Use secure password comparison (e.g., using bcrypt) instead of plain text comparison.
  2. Implement a more robust session management system.
  3. Remove TODO comments and complete the implementation.
  4. Improve error handling with more specific error messages.
  5. Consider using prepared statements for database queries to prevent SQL injection.

Here's a suggested improvement:

 func loginHandler(db *sql.DB) gin.HandlerFunc {
     return func(c *gin.Context) {
         var req struct {
             Username string `json:"username" binding:"required"`
             Password string `json:"password" binding:"required"`
         }

         if err := c.ShouldBindWith(&req, binding.JSON); err != nil {
-            c.JSON(http.StatusBadRequest, gin.H{"error": "无效的请求数据"})
+            c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid request data: " + err.Error()})
             return
         }

-        // TODO: 验证用户名和密码
         var user User
-        err := db.QueryRow("SELECT id FROM users WHERE username = ? AND password = ?", req.Username, req.Password).Scan(&user.ID)
+        err := db.QueryRow("SELECT id, password FROM users WHERE username = ?", req.Username).Scan(&user.ID, &user.Password)
         if err != nil {
-            c.JSON(http.StatusUnauthorized, gin.H{"error": "用户名或密码错误"})
+            c.JSON(http.StatusUnauthorized, gin.H{"error": "Invalid username or password"})
+            return
+        }
+
+        if err := bcrypt.CompareHashAndPassword(user.Password, []byte(req.Password)); err != nil {
+            c.JSON(http.StatusUnauthorized, gin.H{"error": "Invalid username or password"})
+            return
         }

-        //session建立
-        sessionID := "session_" + req.Username
-        sessionMap[sessionID] = &user
-        c.SetCookie("session_id", sessionID, 3600, "/", "localhost", false, true)
+        // TODO: Implement a more robust session management system
+        // For example, use a secure session management library or implement JWT

-        c.JSON(http.StatusOK, gin.H{"message": "登录成功"})
+        c.JSON(http.StatusOK, gin.H{"message": "Login successful"})
     }
 }

To check if a more robust session management system is used elsewhere in the project:

#!/bin/bash
# Check for usage of session management libraries or JWT
rg --type go 'import.*"github.com/gorilla/sessions"'
rg --type go 'import.*"github.com/dgrijalva/jwt-go"'

11-17: ⚠️ Potential issue

Improve session management and password storage.

  1. Consider using a more robust session management solution instead of a global map. This approach may not be thread-safe or scalable.

  2. Storing passwords as plain text in the User struct is a security risk. Instead, store hashed passwords using a secure hashing algorithm like bcrypt.

Here's a suggested improvement for the User struct:

 type User struct {
     ID       int
     Username string
-    Password string
+    Password []byte // Store hashed password
 }

For session management, consider using a package like github.com/gorilla/sessions or implementing a more robust custom solution.

To check if bcrypt is already being used elsewhere in the project:

007WS-cry/main.go (1)

3-12: LGTM: Imports are appropriate and well-organized.

The import section includes all necessary packages for the described functionality. The blank import of the MySQL driver is correctly used for its side effects.

007WS-cry/question_handler.go (1)

158-162: ⚠️ Potential issue

Handle potential scan errors correctly

In the loop scanning rows, if an error occurs during rows.Scan, the function returns after sending an error response. However, deferring rows.Close() might not close the rows in this case.

Ensure rows.Close() is called before returning on error. One way is to move rows.Close() before the loop or handle closure explicitly on error.

Alternatively, since rows.Close() is already deferred, you can proceed without changes if you are confident that defer will handle it correctly. Just be aware of this potential issue.

Comment on lines +1 to +6
database:
username: root
password: 20060820
host: localhost
port: 3306
name: myapp
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⚠️ Potential issue

Critical: Address security vulnerabilities in database configuration

There are two significant security concerns in this configuration:

  1. The database password is hardcoded in plain text. This is a severe security risk as it can lead to unauthorized access if the configuration file is compromised.
  2. The database username is set to "root", which is a highly privileged account. This violates the principle of least privilege and could potentially allow unintended changes to the database.

To address these security vulnerabilities:

  1. Use environment variables or a secure secret management system to store and retrieve sensitive information like passwords.
  2. Create a dedicated database user with only the necessary permissions for your application.

Example of using environment variables:

database:
  username: ${DB_USERNAME}
  password: ${DB_PASSWORD}
  host: localhost
  port: 3306
  name: myapp

Then, set these environment variables securely in your deployment environment.

Would you like me to provide a code snippet demonstrating how to read these environment variables in your application code?

🧰 Tools
🪛 yamllint

[error] 1-1: trailing spaces

(trailing-spaces)


[error] 6-6: no new line character at the end of file

(new-line-at-end-of-file)


🛠️ Refactor suggestion

Enhance configuration file structure and documentation

While the current structure is functional, consider the following improvements to enhance readability, maintainability, and scalability:

  1. Group related configurations under a common key.
  2. Add comments to explain the purpose of each configuration item.
  3. Structure the file to accommodate potential future configurations.

Here's an example of how you could restructure the configuration file:

# Database configuration
database:
  # Connection details for the application database
  connection:
    host: localhost
    port: 3306
    name: myapp
  # Credentials for database access (use environment variables in production)
  credentials:
    username: ${DB_USERNAME}
    password: ${DB_PASSWORD}

# Add other configuration sections as needed
# server:
#   port: 8080
#   host: 0.0.0.0

# logging:
#   level: info
#   file: /var/log/myapp.log

This structure allows for easy expansion and better organization of configuration items as your application grows.

🧰 Tools
🪛 yamllint

[error] 1-1: trailing spaces

(trailing-spaces)


[error] 6-6: no new line character at the end of file

(new-line-at-end-of-file)

Comment on lines +7 to +37
require filippo.io/edwards25519 v1.1.0 // indirect

require (
github.com/bytedance/sonic v1.11.6 // indirect
github.com/bytedance/sonic/loader v0.1.1 // indirect
github.com/cloudwego/base64x v0.1.4 // indirect
github.com/cloudwego/iasm v0.2.0 // indirect
github.com/gabriel-vasile/mimetype v1.4.3 // indirect
github.com/gin-contrib/sse v0.1.0 // indirect
github.com/go-playground/locales v0.14.1 // indirect
github.com/go-playground/universal-translator v0.18.1 // indirect
github.com/go-playground/validator/v10 v10.20.0 // indirect
github.com/go-sql-driver/mysql v1.8.1
github.com/goccy/go-json v0.10.2 // indirect
github.com/json-iterator/go v1.1.12 // indirect
github.com/klauspost/cpuid/v2 v2.2.7 // indirect
github.com/leodido/go-urn v1.4.0 // indirect
github.com/mattn/go-isatty v0.0.20 // indirect
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
github.com/modern-go/reflect2 v1.0.2 // indirect
github.com/pelletier/go-toml/v2 v2.2.2 // indirect
github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
github.com/ugorji/go/codec v1.2.12 // indirect
golang.org/x/arch v0.8.0 // indirect
golang.org/x/crypto v0.23.0 // indirect
golang.org/x/net v0.25.0 // indirect
golang.org/x/sys v0.20.0 // indirect
golang.org/x/text v0.15.0 // indirect
google.golang.org/protobuf v1.34.1 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
)
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🛠️ Refactor suggestion

Update indirect dependencies

Some of the indirect dependencies might be outdated. It's a good practice to keep dependencies up-to-date to benefit from bug fixes and security updates. Consider running go get -u to update all dependencies to their latest minor or patch versions.

Run the following command to update dependencies:

go get -u

After running this command, review the changes in the go.mod file and ensure that the updates don't introduce any breaking changes to your project.


go 1.23.1

require github.com/gin-gonic/gin v1.10.0
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⚠️ Potential issue

Update Gin framework version

The specified version of the Gin framework (v1.10.0) is not valid. As of September 2024, the latest stable version is v1.9.x. Please update to the latest stable version to ensure compatibility and access to the latest features and bug fixes.

Apply this diff to update the Gin version:

-require github.com/gin-gonic/gin v1.10.0
+require github.com/gin-gonic/gin v1.9.1
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
require github.com/gin-gonic/gin v1.10.0
require github.com/gin-gonic/gin v1.9.1

Comment on lines +1 to +3
module myapp

go 1.23.1
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⚠️ Potential issue

Update module name and Go version

  1. Consider using a more descriptive module name that reflects the project's purpose or structure.
  2. The specified Go version (1.23.1) is invalid. As of September 2024, the latest stable version is 1.21.x. Please update to a valid and current Go version.

Apply this diff to fix the Go version:

-go 1.23.1
+go 1.21
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
module myapp
go 1.23.1
module myapp
go 1.21

Comment on lines +24 to +110
func main() {
r := gin.Default()

//连接数据库
var config Config
configFile, err := os.ReadFile("config.yaml")
if err != nil {
log.Fatal("读取配置文件失败:", err)
}
err = yaml.Unmarshal(configFile, &config)
if err != nil {
log.Fatal("解析配置文件失败:", err)
}

dbConnectionString := config.Database.Username + ":" + config.Database.Password + "@tcp(" + config.Database.Host + ":" + config.Database.Port + ")/" + config.Database.Name

db, err := sql.Open("mysql", dbConnectionString)
if err != nil {
log.Fatal("连接数据库失败:", err)
}

defer db.Close()
/*db, err := sql.Open("mysql", "root:20060820@tcp(127.0.0.1:3306)/test")
if err != nil {
log.Fatal("连接数据库失败:", err)
}
defer db.Close()*/

//创建路由组
authGroup := r.Group("/auth")
{
//注册路由
authGroup.POST("/register", registerHandler(db))
//登录路由
authGroup.POST("/login", loginHandler(db))
}

questionGroup := r.Group("/question")
{
//提问路由
questionGroup.POST("/ask", askHandler(db))
//修改问题路由
questionGroup.POST("/update", updateHandler(db))
//回答问题路由
questionGroup.POST("/answer", answerHandler(db))
//搜索问题路由
questionGroup.POST("/search", searchHandler(db))
}

//返回注册界面
r.GET("/auth/register", func(c *gin.Context) {
c.HTML(http.StatusOK, "register.html", nil)
})

//返回登录界面
r.GET("/auth/login", func(c *gin.Context) {
c.HTML(http.StatusOK, "login.html", nil)
})

//返回提问界面
r.GET("/question/ask", func(c *gin.Context) {
c.HTML(http.StatusOK, "ask.html", nil)
})

//返回修改问题界面
r.GET("/question/update", func(c *gin.Context) {
c.HTML(http.StatusOK, "update.html", nil)
})

//返回回答问题界面
r.GET("/question/answer", func(c *gin.Context) {
c.HTML(http.StatusOK, "answer.html", nil)
})

//返回搜索问题界面
r.GET("/question/search", func(c *gin.Context) {
c.HTML(http.StatusOK, "search.html", nil)
})

//静态资源目录
r.Static("/static", "./static")

//错误处理
r.Use(errorHandler)

r.Run(":8080")
}
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🛠️ Refactor suggestion

Main function is functional but could be improved.

The main function successfully sets up the server and routes, but there are several areas for improvement:

  1. The function is quite long. Consider breaking it down into smaller, more focused functions for better readability and maintainability.

  2. Remove the commented-out database connection code (lines 46-50) as it's no longer needed and contains hardcoded credentials.

  3. Error handling could be more robust. For example, after connecting to the database, you should check db.Ping() to ensure the connection is valid.

  4. The server is set to listen on a hardcoded port (8080). Consider making this configurable.

Here's a suggestion for breaking down the main function:

func main() {
    config := loadConfig()
    db := connectToDatabase(config)
    defer db.Close()

    r := setupRouter(db)
    r.Run(":8080")
}

func loadConfig() Config {
    // Load and parse config file
}

func connectToDatabase(config Config) *sql.DB {
    // Connect to database and verify connection
}

func setupRouter(db *sql.DB) *gin.Engine {
    // Set up all routes and middleware
}

This structure improves readability and makes the code more modular.

Comment on lines +35 to +37
var req struct {
Title string `json:"title" binding:"required"`
}
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🛠️ Refactor suggestion

Add validation for question title length

Currently, there's no validation on the length of the question title. Very long titles might cause issues with the database or user interface.

Consider adding validation to ensure the title meets length requirements.

if len(req.Title) > 255 {
    c.JSON(http.StatusBadRequest, gin.H{"error": "标题长度不能超过255个字符"})
    return
}

Comment on lines +109 to +112
if err := c.ShouldBindWith(&req, binding.JSON); err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": "无效的请求数据"})
}

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⚠️ Potential issue

Add missing return statement after error response

In the answerHandler, after handling the error from ShouldBindWith, there is no return statement. This means the function will continue executing even if the request data is invalid, which could lead to unexpected behavior or runtime errors.

Apply this diff to fix the issue:

 if err := c.ShouldBindWith(&req, binding.JSON); err != nil {
     c.JSON(http.StatusBadRequest, gin.H{"error": "无效的请求数据"})
+    return
 }
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
if err := c.ShouldBindWith(&req, binding.JSON); err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": "无效的请求数据"})
}
if err := c.ShouldBindWith(&req, binding.JSON); err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": "无效的请求数据"})
return
}

Comment on lines +139 to +141
var req struct {
Kewword string `json:"keyword" binding:"required"`
}
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⚠️ Potential issue

Correct the misspelled field name 'Kewword' to 'Keyword'

In the searchHandler, the field name Kewword is misspelled in both the struct definition and where it's accessed. This could lead to issues when binding JSON data and querying the database.

Apply this diff to correct the spelling:

 var req struct {
-    Kewword string `json:"keyword" binding:"required"`
+    Keyword string `json:"keyword" binding:"required"`
 }

Don't forget to update all occurrences of req.Kewword to req.Keyword:

-rows, err := db.Query("SELECT * FROM questions WHERE title LIKE ?", "%"+req.Kewword+"%")
+rows, err := db.Query("SELECT * FROM questions WHERE title LIKE ?", "%"+req.Keyword+"%")
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
var req struct {
Kewword string `json:"keyword" binding:"required"`
}
var req struct {
Keyword string `json:"keyword" binding:"required"`
}

Comment on lines +149 to +151
if err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": "数据库错误"})
}
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⚠️ Potential issue

Add missing return statement after database error response

After handling the error from db.Query, there is no return statement. Without returning, the function will attempt to use rows even if it's nil, which can cause a panic.

Apply this diff to fix the issue:

 if err != nil {
     c.JSON(http.StatusInternalServerError, gin.H{"error": "数据库错误"})
+    return
 }
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
if err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": "数据库错误"})
}
if err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": "数据库错误"})
return
}

c.JSON(http.StatusBadRequest, gin.H{"error": "无效的请求数据"})
}

_, err = db.Exec("UPDATE questions SET answer = ? WHERE id = ? AND user_id = ?", req.Answer, req.QuestionID, user.ID)
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💡 Codebase verification

⚠️ Potential issue

Remove User ID Restriction in SQL Query

The answerHandler currently restricts users to answer only their own questions by using user_id = ? in the SQL UPDATE statement. Since no other permission logic or role-based access controls were found in the codebase, it is advisable to allow any authenticated user to answer any question.

  • File: 007WS-cry/question_handler.go
  • Lines: 113-113
- _, err = db.Exec("UPDATE questions SET answer = ? WHERE id = ? AND user_id = ?", req.Answer, req.QuestionID, user.ID)
+ _, err = db.Exec("UPDATE questions SET answer = ? WHERE id = ?", req.Answer, req.QuestionID)
🔗 Analysis chain

Reevaluate user permission logic for answering questions

In the answerHandler, the SQL query restricts users to only answer their own questions by including user_id = ? in the WHERE clause. Typically, any authenticated user should be able to answer any question unless there's a specific business requirement.

Run the following script to confirm if the application should allow users to answer any question:

If the application's intent is to allow users to answer any question, modify the SQL query to remove user_id = ?:

Apply this diff to adjust the SQL query:

-_, err = db.Exec("UPDATE questions SET answer = ? WHERE id = ? AND user_id = ?", req.Answer, req.QuestionID, user.ID)
+_, err = db.Exec("UPDATE questions SET answer = ? WHERE id = ?", req.Answer, req.QuestionID)
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check if other handlers or documentation specify permissions for answering questions.

# Search for permission logic in other handlers or comments.
rg --type go "answerHandler|权限|permission"

# Check for any documentation that specifies user permissions.
rg --type md "answer question" README.md docs/

Length of output: 287


Script:

#!/bin/bash
# Description: Search for all updates to the 'questions' table and check usage of 'user_id'.

# Search for SQL update statements on 'questions' table with 'user_id'.
rg --type go "db\.Exec\(\"UPDATE questions SET.*user_id"

# Search for middleware or global permission handlers.
rg --type go "middleware|auth|authorize|permission"

Length of output: 1633


Script:

#!/bin/bash
# Description: Investigate authorization logic and related handlers for questions.

# Search for authorization or role-based access control implementations.
rg --type go "authorization|role-based|rbac|access control"

# Search for other handlers related to questions to check permission logic.
rg --type go "questionHandler|createQuestion|deleteQuestion|updateQuestion"

# Check if `answerHandler` is wrapped or modified by other middleware.
rg --type go "answerHandler" | rg "middleware|wrap|use"

Length of output: 195

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基础功能还算完备 可以考虑分模块开发 全部写在一起不利于维护;数据库的结构可以再调整,比如问题提出者等; 采用sessionMap的方式记录登录情况 会不会有安全问题

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Actionable comments posted: 4

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Files that changed from the base of the PR and between a439022 and 3bba679.

⛔ Files ignored due to path filters (1)
  • 007WS-cry/学生问答系统代码说明文档.pdf is excluded by !**/*.pdf
📒 Files selected for processing (1)
  • 007WS-cry/readme.md (1 hunks)
🧰 Additional context used
🪛 Markdownlint
007WS-cry/readme.md

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Comment on lines +34 to +35
# Authentication

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⚠️ Potential issue

Authentication section needs content

The Authentication section is currently empty. Consider adding information about the authentication methods used in your API, such as:

  • Types of authentication supported (e.g., API keys, JWT tokens, OAuth)
  • How to obtain authentication credentials
  • Where to include authentication information in requests (e.g., headers, query parameters)
  • Any rate limiting or token expiration policies

This information is crucial for API users to understand how to authenticate their requests properly.

Comment on lines +38 to +79
## POST 用户注册

POST /auth/register/{username}{password}

### 请求参数

|名称|位置|类型|必选|说明|
|---|---|---|---|---|
|username|path|string| 是 |none|
|password|path|string| 是 |none|

> 返回示例

> 200 Response

```json
{}
```

### 返回结果

|状态码|状态码含义|说明|数据模型|
|---|---|---|---|
|200|[OK](https://tools.ietf.org/html/rfc7231#section-6.3.1)|none|Inline|
|400|[Bad Request](https://tools.ietf.org/html/rfc7231#section-6.5.1)|none|Inline|
|404|[Not Found](https://tools.ietf.org/html/rfc7231#section-6.5.4)|none|Inline|

### 返回数据结构

状态码 **400**

|名称|类型|必选|约束|中文名|说明|
|---|---|---|---|---|---|
|» code|integer|true|none||none|
|» message|string|true|none||none|

状态码 **404**

|名称|类型|必选|约束|中文名|说明|
|---|---|---|---|---|---|
|» code|integer|true|none||none|
|» message|string|true|none||none|
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🛠️ Refactor suggestion

Enhance user registration endpoint documentation

The user registration endpoint documentation is a good start, but consider the following improvements:

  1. Add a brief description of the endpoint's purpose.
  2. Clarify the expected format for username and password (e.g., any restrictions on length or characters).
  3. Include an example of a successful response body, not just an empty JSON object.
  4. Provide more detailed error messages for 400 and 404 responses to help API users understand potential issues.
  5. Consider adding a 201 Created status code for successful user creation, which is more appropriate than 200 OK for resource creation.
  6. Include any headers that might be required or returned (e.g., Content-Type).

Example improvement for the success response:

{
  "user_id": 12345,
  "username": "example_user",
  "created_at": "2023-04-15T10:30:00Z"
}

These enhancements will provide a more comprehensive guide for API users.

🧰 Tools
🪛 Markdownlint

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Comment on lines +81 to +300

状态码 **404**

|名称|类型|必选|约束|中文名|说明|
|---|---|---|---|---|---|
|» code|integer|true|none||none|
|» message|string|true|none||none|

## POST 用户登录

POST /auth/login{username}{password}

### 请求参数

|名称|位置|类型|必选|说明|
|---|---|---|---|---|
|username|path|string| 是 |none|
|password|path|string| 是 |none|

> 返回示例

> 200 Response

```json
{
"session_cookie": "string"
}
```

### 返回结果

|状态码|状态码含义|说明|数据模型|
|---|---|---|---|
|200|[OK](https://tools.ietf.org/html/rfc7231#section-6.3.1)|none|Inline|
|400|[Bad Request](https://tools.ietf.org/html/rfc7231#section-6.5.1)|none|Inline|
|404|[Not Found](https://tools.ietf.org/html/rfc7231#section-6.5.4)|none|Inline|

### 返回数据结构

状态码 **200**

|名称|类型|必选|约束|中文名|说明|
|---|---|---|---|---|---|
|» session_cookie|string|true|none||none|

状态码 **400**

|名称|类型|必选|约束|中文名|说明|
|---|---|---|---|---|---|
|» code|integer|true|none||none|
|» message|string|true|none||none|

状态码 **404**

|名称|类型|必选|约束|中文名|说明|
|---|---|---|---|---|---|
|» code|integer|true|none||none|
|» message|string|true|none||none|

## POST 搜索问题

POST /question/search/{keyword}

### 请求参数

|名称|位置|类型|必选|说明|
|---|---|---|---|---|
|keyword|path|string| 是 |none|

> 返回示例

> 200 Response

```json
{}
```

### 返回结果

|状态码|状态码含义|说明|数据模型|
|---|---|---|---|
|200|[OK](https://tools.ietf.org/html/rfc7231#section-6.3.1)|none|Inline|
|400|[Bad Request](https://tools.ietf.org/html/rfc7231#section-6.5.1)|none|Inline|
|404|[Not Found](https://tools.ietf.org/html/rfc7231#section-6.5.4)|none|Inline|

### 返回数据结构

状态码 **400**

|名称|类型|必选|约束|中文名|说明|
|---|---|---|---|---|---|
|» code|integer|true|none||none|
|» message|string|true|none||none|

状态码 **404**

|名称|类型|必选|约束|中文名|说明|
|---|---|---|---|---|---|
|» code|integer|true|none||none|
|» message|string|true|none||none|
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🛠️ Refactor suggestion

Improve consistency and completeness across all endpoints

While the structure of each endpoint documentation is consistent, there are several areas for improvement that apply to all endpoints:

  1. Add brief descriptions for each endpoint to explain its purpose and any key behaviors.
  2. Provide more detailed request parameter descriptions, including any validation rules or constraints.
  3. Include example request bodies where applicable (e.g., for POST requests).
  4. Enhance response examples to show realistic data structures and values.
  5. Expand on error responses, providing specific error codes and messages for different scenarios.
  6. Consider adding authentication requirements for each endpoint if applicable.
  7. Include any relevant headers (request and response) for each endpoint.
  8. Add pagination information for endpoints that return lists (e.g., search questions).

For example, for the "POST 用户登录" (User Login) endpoint:

  1. Add a description: "Authenticates a user and returns a session cookie for subsequent requests."
  2. Enhance the response example:
{
  "session_cookie": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...",
  "user": {
    "id": 12345,
    "username": "example_user"
  },
  "expires_at": "2023-04-16T10:30:00Z"
}
  1. Add authentication information: "This endpoint does not require authentication."

Implementing these improvements across all endpoints will significantly enhance the quality and usefulness of your API documentation.

🧰 Tools
🪛 Markdownlint

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Comment on lines +1 to +303
|名称|类型|必选|约束|中文名|说明|
|---|---|---|---|---|---|
|» code|integer|true|none||none|
|» message|string|true|none||none|

## POST 用户登录

POST /auth/login{username}{password}

### 请求参数

|名称|位置|类型|必选|说明|
|---|---|---|---|---|
|username|path|string| 是 |none|
|password|path|string| 是 |none|

> 返回示例

> 200 Response

```json
{
"session_cookie": "string"
}
```

### 返回结果

|状态码|状态码含义|说明|数据模型|
|---|---|---|---|
|200|[OK](https://tools.ietf.org/html/rfc7231#section-6.3.1)|none|Inline|
|400|[Bad Request](https://tools.ietf.org/html/rfc7231#section-6.5.1)|none|Inline|
|404|[Not Found](https://tools.ietf.org/html/rfc7231#section-6.5.4)|none|Inline|

### 返回数据结构

状态码 **200**

|名称|类型|必选|约束|中文名|说明|
|---|---|---|---|---|---|
|» session_cookie|string|true|none||none|

状态码 **400**

|名称|类型|必选|约束|中文名|说明|
|---|---|---|---|---|---|
|» code|integer|true|none||none|
|» message|string|true|none||none|

状态码 **404**

|名称|类型|必选|约束|中文名|说明|
|---|---|---|---|---|---|
|» code|integer|true|none||none|
|» message|string|true|none||none|

## POST 搜索问题

POST /question/search/{keyword}

### 请求参数

|名称|位置|类型|必选|说明|
|---|---|---|---|---|
|keyword|path|string| 是 |none|

> 返回示例

> 200 Response

```json
{}
```

### 返回结果

|状态码|状态码含义|说明|数据模型|
|---|---|---|---|
|200|[OK](https://tools.ietf.org/html/rfc7231#section-6.3.1)|none|Inline|
|400|[Bad Request](https://tools.ietf.org/html/rfc7231#section-6.5.1)|none|Inline|
|404|[Not Found](https://tools.ietf.org/html/rfc7231#section-6.5.4)|none|Inline|

### 返回数据结构

状态码 **400**

|名称|类型|必选|约束|中文名|说明|
|---|---|---|---|---|---|
|» code|integer|true|none||none|
|» message|string|true|none||none|

状态码 **404**

|名称|类型|必选|约束|中文名|说明|
|---|---|---|---|---|---|
|» code|integer|true|none||none|
|» message|string|true|none||none|

# 数据模型

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🛠️ Refactor suggestion

Overall feedback on API documentation

Thank you for providing this API documentation. It's a good foundation, but there are several areas where it can be improved to make it more comprehensive and user-friendly:

  1. Introduction: Add an introduction section explaining the purpose of the API, its main features, and any prerequisites for using it.

  2. Authentication: Expand the empty Authentication section with detailed information about the authentication process.

  3. Endpoint Descriptions: Enhance each endpoint with more detailed descriptions, request/response examples, and error scenarios.

  4. Data Models: Consider adding a section describing the data models used in your API responses.

  5. Pagination: If any endpoints return lists of items, include information about pagination.

  6. Rate Limiting: If applicable, add information about rate limiting policies.

  7. Versioning: Include details about API versioning if implemented.

  8. Examples: Provide code examples in various languages for common API operations.

  9. Changelog: Consider adding a changelog section to track API updates.

  10. Testing: Include information about any available sandbox or testing environments.

By addressing these points, you'll create a more robust and developer-friendly API documentation that will help users integrate with your service more effectively.

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🪛 Markdownlint

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