### Manage Configuration with Viper

Source: https://context7.com/zjutjh/mygo/llms.txt

Provides examples for accessing application settings using the MyGo config package. It supports direct value retrieval, scoped configuration access, and unmarshaling YAML data into Go structs.

```go
package main

import "github.com/zjutjh/mygo/config"

func example() {
    appName := config.AppName()
    env := config.AppEnv()
    
    cfg := config.Pick()
    dbHost := cfg.GetString("db.host")

    var dbConfig DatabaseConfig
    cfg.UnmarshalKey("db", &dbConfig)
}

type DatabaseConfig struct {
    Host     string `mapstructure:"host"`
    Port     int    `mapstructure:"port"`
}
```

--------------------------------

### Bootstrap Application and CLI Commands in Go

Source: https://context7.com/zjutjh/mygo/llms.txt

Demonstrates how to initialize the MyGo kernel with service boot functions and register custom CLI commands using the Cobra library. This pattern ensures services like logging, databases, and caching are prepared before application execution.

```go
package main

import (
    "github.com/spf13/cobra"
    "github.com/zjutjh/mygo/foundation/command"
    "github.com/zjutjh/mygo/foundation/kernel"
    "github.com/zjutjh/mygo/ndb"
    "github.com/zjutjh/mygo/nedis"
    "github.com/zjutjh/mygo/nlog"
)

func main() {
    command.Execute(
        func() kernel.BootList {
            return kernel.BootList{
                nlog.Boot("access_log", "error_log"),
                ndb.Boot("secondary_db"),
                nedis.Boot("cache_redis"),
            }
        },
        func(root *cobra.Command) {
            command.Add("migrate", func(cmd *cobra.Command, args []string) error {
                return nil
            })
        },
        nil,
    )
}
```

--------------------------------

### Integrate WeChat Mini Program API in Go

Source: https://context7.com/zjutjh/mygo/llms.txt

Demonstrates how to initialize the Mini Program client to perform authentication, retrieve access tokens, send subscription messages, and generate unlimited QR codes. Requires a configured environment with Redis and Resty support.

```go
package main

import (
    "github.com/zjutjh/mygo/wechat/miniProgram"
)

func example() {
    mp := miniProgram.Pick()

    session, err := mp.Auth.Session(ctx, "user-login-code")
    if err != nil {
        // Handle error
    }
    openID := session.OpenID

    token, err := mp.AccessToken.GetToken(ctx, false)

    mp.SubscribeMessage.Send(ctx, &request.RequestSubscribeMessageSend{
        ToUser:     openID,
        TemplateID: "template-id",
        Data: map[string]*request.SubscribeMessageData{
            "thing1": {Value: "Order Confirmed"},
            "time2":  {Value: "2024-01-15 10:30"},
        },
    })

    qrResp, err := mp.WXACode.GetUnlimited(ctx, &request.RequestWXACodeGetUnlimited{
        Scene: "user=123",
        Page:  "pages/index/index",
    })
}
```

--------------------------------

### Implement HTTP Server and Routing with Gin

Source: https://context7.com/zjutjh/mygo/llms.txt

Shows how to wrap a Gin engine within the MyGo framework to handle HTTP requests. It includes route registration, middleware application, and structured JSON responses using the framework's reply utility.

```go
package main

import (
    "github.com/gin-gonic/gin"
    "github.com/zjutjh/mygo/foundation/command"
    "github.com/zjutjh/mygo/foundation/httpserver"
    "github.com/zjutjh/mygo/foundation/kernel"
    "github.com/zjutjh/mygo/foundation/reply"
    "github.com/zjutjh/mygo/kit"
    "github.com/zjutjh/mygo/middleware/cors"
)

func main() {
    command.Execute(
        func() kernel.BootList { return kernel.BootList{} },
        func(root *cobra.Command) {
            command.Add("server", httpserver.CommandRegister(registerRoutes))
        },
        httpserver.CommandRegister(registerRoutes),
    )
}

func registerRoutes(engine *gin.Engine) {
    engine.Use(cors.Pick())
    api := engine.Group("/api")
    {
        api.GET("/health", func(ctx *gin.Context) {
            reply.Success(ctx, gin.H{"status": "ok"})
        })
    }
}
```

--------------------------------

### Go Standard API Response Formatting

Source: https://context7.com/zjutjh/mygo/llms.txt

This Go code snippet shows how to use the 'reply' package to send standardized JSON responses for HTTP APIs. It covers success responses, error responses using predefined codes, custom error responses, and responses with custom codes and data. Dependencies include 'github.com/gin-gonic/gin' for HTTP handling and custom packages 'github.com/zjutjh/mygo/foundation/reply' and 'github.com/zjutjh/mygo/kit' for reply formatting and error codes.

```go
package main

import (
    "github.com/gin-gonic/gin"
    "github.com/zjutjh/mygo/foundation/reply"
    "github.com/zjutjh/mygo/kit"
)

func handler(ctx *gin.Context) {
    // Success response
    // {"code": 0, "message": "Success", "data": {"id": 1, "name": "John"}}
    reply.Success(ctx, gin.H{
        "id":   1,
        "name": "John",
    })

    // Error response with predefined codes
    // {"code": 20003, "message": "Invalid parameter", "data": null}
    reply.Fail(ctx, kit.CodeParameterInvalid)

    // Custom error response
    // {"code": 30001, "message": "Custom error", "data": null}
    customCode := kit.NewCode(30001, "Custom error message")
    reply.Fail(ctx, customCode)

    // Response with custom code and data
    reply.Reply(ctx, kit.CodeOK, gin.H{"result": "processed"})
}

// Predefined error codes
// kit.CodeOK                    - 0: Success
// kit.CodeUnknownError          - 10000: Unknown error
// kit.CodeThirdServiceError     - 10001: Third-party service error
// kit.CodeDatabaseError         - 10002: Database error
// kit.CodeRedisError            - 10003: Redis error
// kit.CodeNotLoggedIn           - 20000: User not logged in
// kit.CodeLoginExpired          - 20001: Login expired
// kit.CodePermissionDenied      - 20002: Permission denied
// kit.CodeParameterInvalid      - 20003: Invalid parameter
// kit.CodeDataNotFound          - 20005: Data not found
// kit.CodeTooFrequently         - 20008: Too frequent requests

```

--------------------------------

### Implement Redis Client with Multi-Mode Support in Go

Source: https://context7.com/zjutjh/mygo/llms.txt

The nedis package provides a wrapper for Redis clients supporting single, cluster, and failover modes. It includes features for connection pooling, pipelining, and Pub/Sub messaging.

```go
package main

import (
    "context"
    "time"
    "github.com/zjutjh/mygo/foundation/kernel"
    "github.com/zjutjh/mygo/nedis"
)

func bootRedis() kernel.BootList {
    return kernel.BootList{
        nedis.Boot("session_redis", "cache_redis"),
    }
}

func example() {
    ctx := context.Background()
    rdb := nedis.Pick()
    cacheRDB := nedis.Pick("cache_redis")

    rdb.Set(ctx, "user:1:name", "John", 24*time.Hour)
    val, _ := rdb.Get(ctx, "user:1:name").Result()

    rdb.HSet(ctx, "user:1", map[string]interface{}{
        "name":  "John",
        "email": "john@example.com",
    })

    pipe := rdb.Pipeline()
    pipe.Incr(ctx, "counter")
    pipe.Exec(ctx)
}
```

--------------------------------

### Generate OpenAPI Documentation with Swagger in Go

Source: https://context7.com/zjutjh/mygo/llms.txt

Uses struct tags to define API contracts and automatically generate Swagger documentation for Gin routes. Developers register API structs in the swagger.CM map to expose endpoints via the DocumentHandler.

```go
package main

import (
    "github.com/gin-gonic/gin"
    "github.com/zjutjh/mygo/swagger"
)

func init() {
    swagger.CM["main.createUser"] = CreateUserAPI{}
}

type CreateUserAPI struct {
    Info struct{} `name:"Create User" desc:"Creates a new user account"`
    Body struct {
        Name  string `json:"name" binding:"required" description:"User's full name"`
        Email string `json:"email" binding:"required,email" description:"User's email address"`
    }
    Response struct {
        ID    uint   `json:"id" description:"Created user ID"`
    }
}

func registerRoutes(engine *gin.Engine) {
    engine.GET("/swagger", swagger.DocumentHandler(engine))
}
```

--------------------------------

### JWT Authentication with Go

Source: https://context7.com/zjutjh/mygo/llms.txt

Implements JWT token generation, parsing, and middleware for securing API routes. It supports configurable claims like expiration, issuer, and audience, and integrates with the Gin framework. Dependencies include the Gin framework and custom JWT packages.

```go
package main

import (
    "github.com/gin-gonic/gin"
    "github.com/zjutjh/mygo/foundation/kernel"
    "github.com/zjutjh/mygo/jwt"
    jwtMiddleware "github.com/zjutjh/mygo/jwt/middleware"
)

// config.yaml:
// jwt:
//   secret: "your-secret-key"
//   issuer: "myapp"
//   audience: ["web", "mobile"]
//   expiration: "24h"

type UserIdentity struct {
    UserID   uint   `json:"user_id"`
    Username string `json:"username"`
    Role     string `json:"role"`
}

func bootJWT() kernel.BootList {
    return kernel.BootList{
        jwt.Boot[UserIdentity]("admin_jwt"), // Boot default + named instances
    }
}

func example() {
    // Get JWT instance
    j := jwt.Pick[UserIdentity]()

    // Generate token
    identity := UserIdentity{
        UserID:   1,
        Username: "john",
        Role:     "admin",
    }
    token, err := j.GenerateToken(identity)
    if err != nil {
        // Handle error
    }
    // token: "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..."

    // Parse token
    parsedIdentity, err := j.ParseToken(token)
    if err != nil {
        // Handle error (expired, invalid, etc.)
    }
    // parsedIdentity.UserID == 1
}

func registerRoutes(engine *gin.Engine) {
    // Public routes
    engine.POST("/login", loginHandler)

    // Protected routes with JWT middleware
    protected := engine.Group("/api")
    protected.Use(jwtMiddleware.Auth[UserIdentity](true)) // mustLogged = true
    {
        protected.GET("/profile", func(ctx *gin.Context) {
            // Get identity from context
            identity, err := jwt.GetIdentity[UserIdentity](ctx)
            if err != nil {
                // Handle error
                return
            }
            // Use identity.UserID, identity.Username, etc.
        })
    }

    // Optional auth (logged in users get extra features)
    optional := engine.Group("/public")
    optional.Use(jwtMiddleware.Auth[UserIdentity](false)) // mustLogged = false
    {
        optional.GET("/content", contentHandler)
    }
}

```

--------------------------------

### Session Management with Go

Source: https://context7.com/zjutjh/mygo/llms.txt

Provides cookie-based session management using Redis or in-memory storage. It integrates with the Gin framework, allowing for secure session data handling and route protection. Configuration options include driver, secret, and cookie parameters.

```go
package main

import (
    "github.com/gin-gonic/gin"
    "github.com/zjutjh/mygo/session"
    sessionMiddleware "github.com/zjutjh/mygo/session/middleware"
)

// config.yaml:
// session:
//   driver: "redis"  // redis or memory
//   redis: "redis"   // Redis config scope
//   secret: "session-secret"
//   name: "session_id"
//   path: "/"
//   domain: ""
//   max_age: 86400
//   secure: false
//   http_only: true

type SessionUser struct {
    UserID   uint
    Username string
}

func registerRoutes(engine *gin.Engine) {
    // Apply session middleware
    engine.Use(session.Pick())

    engine.POST("/login", func(ctx *gin.Context) {
        // Authenticate user...
        user := SessionUser{UserID: 1, Username: "john"}

        // Set session identity
        if err := session.SetIdentity(ctx, user); err != nil {
            // Handle error
            return
        }
        // Session cookie is automatically set
    })

    engine.POST("/logout", func(ctx *gin.Context) {
        // Delete session identity
        if err := session.DeleteIdentity(ctx); err != nil {
            // Handle error
            return
        }
    })

    // Protected routes
    protected := engine.Group("/api")
    protected.Use(sessionMiddleware.Auth[SessionUser](true))
    {
        protected.GET("/me", func(ctx *gin.Context) {
            // Get session identity
            user, err := session.GetIdentity[SessionUser](ctx)
            if err != nil {
                // Handle error
                return
            }
            // Use user.UserID, user.Username
        })
    }
}

```

--------------------------------

### Schedule Cron Jobs in Go

Source: https://context7.com/zjutjh/mygo/llms.txt

Utilizes the robfig/cron package to register and execute scheduled tasks. Supports cron expressions with seconds and custom job structures for complex logic.

```Go
package main

import (
    "github.com/robfig/cron/v3"
    "github.com/spf13/cobra"
    "github.com/zjutjh/mygo/foundation/command"
    "github.com/zjutjh/mygo/foundation/crontab"
    "github.com/zjutjh/mygo/foundation/kernel"
)

func main() {
    command.Execute(
        func() kernel.BootList {
            return kernel.BootList{}
        },
        func(root *cobra.Command) {
            command.Add("cron", crontab.CommandRegister(registerJobs))
        },
        nil,
    )
}

func registerJobs(c *cron.Cron) {
    c.AddFunc("* * * * * *", func() {})
    c.AddFunc("0 0 * * * *", cleanupExpiredSessions)
    c.AddFunc("0 30 2 * * *", generateDailyReport)
    c.AddFunc("0 0 9 * * 1", sendWeeklyNewsletter)
    c.AddJob("0 */5 * * * *", &DataSyncJob{})
}

type DataSyncJob struct{}
func (j *DataSyncJob) Run() {}
func cleanupExpiredSessions() {}
func generateDailyReport() {}
func sendWeeklyNewsletter() {}
```

--------------------------------

### Structured Logging with Logrus

Source: https://context7.com/zjutjh/mygo/llms.txt

Implements structured JSON logging with features like log rotation, Feishu webhook alerts for critical logs, and multi-instance support. It requires the 'nlog' package and can be configured via 'config.yaml'.

```go
package main

import (
    "github.com/zjutjh/mygo/foundation/kernel"
    "github.com/zjutjh/mygo/nlog"
)

// config.yaml:
// log:
//   filename: "logs/app.log"
//   max_size: 100      # MB
//   max_age: 30        # days
//   max_backups: 10
//   local_time: true
//   compress: true
//   level: 4           # Debug=5, Info=4, Warn=3, Error=2
//   feishu_hook:
//     feishu: "feishu"  # Feishu config scope
//     notice_levels: [2, 3]  # Error and Warn

func bootLogging() kernel.BootList {
    return kernel.BootList{
        nlog.Boot("access_log", "error_log"),
    }
}

func example() {
    // Get default logger
    logger := nlog.Pick()

    // Get named logger
    accessLog := nlog.Pick("access_log")

    // Basic logging
    logger.Info("Application started")
    logger.Debug("Debug information")
    logger.Warn("Warning message")
    logger.Error("Error occurred")

    // Structured logging with fields
    logger.WithField("user_id", 123).Info("User logged in")

    logger.WithFields(map[string]interface{}{
        "request_id": "abc123",
        "method":     "POST",
        "path":       "/api/users",
        "latency":    "45ms",
    }).Info("Request completed")

    // Error logging with error object
    err := someOperation()
    if err != nil {
        logger.WithError(err).Error("Operation failed")
    }

    // Formatted logging
    logger.Infof("Processing %d items", 100)
    logger.Errorf("Failed to connect to %s: %v", "database", err)
}

```

--------------------------------

### HTTP Client with Resty

Source: https://context7.com/zjutjh/mygo/llms.txt

A wrapper around the go-resty HTTP client, offering automatic logging, retry logic, and configurable timeouts. It depends on the 'nesty' package and can be configured via 'config.yaml'.

```go
package main

import (
    "github.com/zjutjh/mygo/nesty"
)

// config.yaml:
// resty:
//   log: "log"
//   timeout: "30s"
//   retry_count: 3
//   retry_wait_time: "100ms"
//   retry_max_wait_time: "2s"

func example() {
    client := nesty.Pick()

    // GET request
    var result map[string]interface{}
    resp, err := client.R().
        SetHeader("Accept", "application/json").
        SetQueryParam("page", "1").
        SetResult(&result).
        Get("https://api.example.com/users")

    if err != nil {
        // Handle error
    }
    if resp.IsError() {
        // Handle HTTP error (4xx, 5xx)
    }

    // POST request with JSON body
    type CreateRequest struct {
        Name  string `json:"name"`
        Email string `json:"email"`
    }

    type CreateResponse struct {
        ID   int    `json:"id"`
        Name string `json:"name"`
    }

    var createResp CreateResponse
    resp, err = client.R().
        SetHeader("Content-Type", "application/json").
        SetBody(CreateRequest{Name: "John", Email: "john@example.com"}).
        SetResult(&createResp).
        Post("https://api.example.com/users")

    // Form data
    resp, err = client.R().
        SetFormData(map[string]string{
            "username": "john",
            "password": "secret",
        }).
        Post("https://api.example.com/login")

    // File upload
    resp, err = client.R().
        SetFile("file", "/path/to/file.pdf").
        SetFormData(map[string]string{"description": "My document"}).
        Post("https://api.example.com/upload")
}

```

--------------------------------

### Manage MySQL Database Connections with GORM in Go

Source: https://context7.com/zjutjh/mygo/llms.txt

The ndb package facilitates MySQL connectivity using GORM. It supports multi-instance configurations, connection pooling, and standard GORM operations like transactions and queries.

```go
package main

import (
    "github.com/zjutjh/mygo/foundation/kernel"
    "github.com/zjutjh/mygo/ndb"
)

type User struct {
    ID    uint   `gorm:"primaryKey"`
    Name  string `gorm:"size:255"`
    Email string `gorm:"uniqueIndex"`
}

func bootDatabase() kernel.BootList {
    return kernel.BootList{
        ndb.Boot("analytics_db", "logs_db"),
    }
}

func example() {
    db := ndb.Pick()
    analyticsDB := ndb.Pick("analytics_db")

    if ndb.Exist("logs_db") {
        logsDB := ndb.Pick("logs_db")
    }

    user := User{Name: "John", Email: "john@example.com"}
    result := db.Create(&user)

    var users []User
    db.Where("name LIKE ?", "%John%").Find(&users)

    db.Transaction(func(tx *gorm.DB) error {
        return tx.Create(&User{Name: "Alice"}).Error
    })
}
```

--------------------------------

### Manage Files with Cube Storage Client in Go

Source: https://context7.com/zjutjh/mygo/llms.txt

Enables file operations including uploading from bytes or disk, generating public URLs, and deleting files from the Cube storage service.

```Go
package main

import (
    "bytes"
    "context"
    "os"
    "github.com/zjutjh/mygo/cube"
)

func example() {
    client := cube.Pick()
    ctx := context.Background()

    // Upload
    resp, _ := client.UploadFile(ctx, "hello.txt", bytes.NewReader([]byte("Hello")), "docs/", false, true)
    objectKey := resp.Data.ObjectKey

    // Retrieve URLs
    fileURL := client.GetFileURL(objectKey, false)
    
    // Delete
    client.DeleteFile(objectKey)
}
```

--------------------------------

### Distributed Locking with Redsync

Source: https://context7.com/zjutjh/mygo/llms.txt

Provides distributed locking capabilities using Redsync, which relies on Redis for mutual exclusion in distributed systems. It requires the 'lock' package and Redis configuration.

```go
package main

import (
    "context"
    "time"

    "github.com/go-redsync/redsync/v4"
    "github.com/zjutjh/mygo/foundation/kernel"
    "github.com/zjutjh/mygo/lock"
)

// config.yaml:
// lock:
//   redis: "redis"  # Redis config scope

func bootLock() kernel.BootList {
    return kernel.BootList{
        lock.Boot(),
    }
}

func example() {
    rs := lock.Pick()

    // Create a mutex for a specific resource
    mutex := rs.NewMutex("order:123:process",
        redsync.WithExpiry(30*time.Second),
        redsync.WithTries(3),
        redsync.WithRetryDelay(100*time.Millisecond),
    )

    // Acquire lock
    if err := mutex.Lock(); err != nil {
        // Failed to acquire lock (resource is busy)
        return
    }
    defer mutex.Unlock()

    // Critical section - only one process can execute this
    processOrder("123")

    // Lock with context
    ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
    defer cancel()

    if err := mutex.LockContext(ctx); err != nil {
        // Lock acquisition timed out or failed
        return
    }
    defer mutex.Unlock()
}

func processOrder(orderID string) {
    // Process order logic
}

```

--------------------------------

### Integrate WeChat Official Account API in Go

Source: https://context7.com/zjutjh/mygo/llms.txt

Provides methods for OAuth flow management, template message delivery, and media material uploads within the WeChat Official Account ecosystem.

```go
package main

import (
    "github.com/zjutjh/mygo/wechat/officialAccount"
)

func example() {
    oa := officialAccount.Pick()

    authURL, err := oa.OAuth.GetAuthURL(redirectURI, "snsapi_userinfo", "state")

    user, err := oa.OAuth.UserFromCode(code)
    openID := user.GetOpenID()

    oa.TemplateMessage.Send(ctx, &request.RequestTemplateSend{
        ToUser:     openID,
        TemplateID: "template-id",
        URL:        "https://example.com/detail",
        Data: map[string]*request.TemplateData{
            "first":   {Value: "Your order has been shipped"},
            "keyword1": {Value: "Order #12345"},
        },
    })

    mediaResp, err := oa.Material.MediaUpload(ctx, mediaType, filePath)
}
```

--------------------------------

### Send Feishu Bot Notifications in Go

Source: https://context7.com/zjutjh/mygo/llms.txt

Provides a client to send webhook notifications to Feishu (Lark). Supports checking configuration existence and using named client instances for different alert channels.

```Go
package main

import "github.com/zjutjh/mygo/feishu"

func example() {
    if !feishu.Exist() {
        return
    }

    client := feishu.Pick()
    err := client.Send("[MyApp] Alert", "Database connection failed!")
    
    if feishu.Exist("alerts") {
        alertClient := feishu.Pick("alerts")
        alertClient.Send("[Critical]", "Service is down!")
    }
}
```

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