monorepo/dezendorf/applications/temp-set/Creating a complete solution that satisf

Creating a complete solution that satisfies your requirements involves several steps, including setting up the SNMP communication, creating RESTful endpoints, managing cache, implementing persistence, and integrating with HomeKit. Below is an outline of how you could accomplish this using Go. Due to the complexity, this will be a high-level guide with code snippets for key parts.

Let's break this task into manageable pieces:

### 1. Set Up Go Modules and Dependencies

First, initialize a new Go module and install the required packages.
```bash
go mod init apc-pdu-server
go get github.com/gosnmp/gosnmp
go get github.com/gorilla/mux
go get github.com/dustin/go-json
```

### 2. Define a Basic Structure

Create a basic structure to manage PDUs and ports:
```go
package main

import (
    "fmt"
    "net/http"
    "github.com/gorilla/mux"
    "github.com/gosnmp/gosnmp"
    "sync"
)

type PDU struct {
    IP   string
    Community string
}

type PortStatus struct {
    Name   string
    Status bool
}

var (
    pduList = map[string]*PDU{
        // "PDU ID": PDU struct
    }
    portCache = make(map[string]*PortStatus)
    cacheLock = sync.RWMutex{}
)
```

### 3. Create SNMP Functions

Implement functions for getting and setting port names and statuses using SNMP:
```go
func getPortName(pdu *PDU, port int) (string, error) {
    // Implement SNMP get for port name
    target := pdu.IP
    g := gosnmp.NewGoSNMP(target, pdu.Community, gosnmp.Version2c, 5)
    err := g.Connect()
    if err != nil {
        return "", err
    }
    defer g.Conn.Close()

    // Example OID for port name
    result, err := g.Get([]string{fmt.Sprintf("1.3.6.1.2.1.31.1.1.1.1.%d", port)})
    if err != nil {
        return "", err
    }
    if len(result.Variables) > 0 {
        return string(result.Variables[0].Value.([]byte)), nil
    }
    return "", nil
}

func setPortName(pdu *PDU, port int, name string) error {
    // Implement SNMP set for port name
    return nil
}

func getPowerStatus(pdu *PDU, port int) (bool, error) {
    // Implement SNMP get for power status
    return false, nil
}

func setPowerStatus(pdu *PDU, port int, status bool) error {
    // Implement SNMP set for power status
    return nil
}
```

### 4. Implement REST API

Set up the router with HTTP handlers:
```go
func getPortNameHandler(w http.ResponseWriter, r *http.Request) {
    vars := mux.Vars(r)
    pduID := vars["pduId"]
    port := vars["port"]

    // Fetch from cache
    cacheLock.RLock()
    cachedStatus, exists := portCache[fmt.Sprintf("%s_%s", pduID, port)]
    cacheLock.RUnlock()
    if exists {
        // Return cached value
        w.Write([]byte(cachedStatus.Name))
        return
    }

    // Query device
    pdu, exists := pduList[pduID]
    if !exists {
        http.Error(w, "PDU not found", http.StatusNotFound)
        return
    }

    name, err := getPortName(pdu, port)
    if err != nil {
        http.Error(w, "Error fetching port name", http.StatusInternalServerError)
        return
    }
    
    // Cache the result
    cacheLock.Lock()
    portCache[fmt.Sprintf("%s_%s", pduID, port)] = &PortStatus{Name: name, Status: false}
    cacheLock.Unlock()

    w.Write([]byte(name))
}

func main() {
    r := mux.NewRouter()
    r.HandleFunc("/api/pdu/{pduId}/port/{port}/name", getPortNameHandler).Methods("GET")

    http.Handle("/", r)
    http.ListenAndServe(":8080", nil)
}
```

### 5. Cache Management and Persistence

Implement methods for saving and loading cache from disk.
```go
import (
    "encoding/json"
    "io/ioutil"
    "os"
)

// Save cache to file
func saveCacheToDisk() error {
    data, err := json.Marshal(portCache)
    if err != nil {
        return err
    }
    return ioutil.WriteFile("cache.json", data, 0644)
}

// Load cache from file
func loadCacheFromDisk() error {
    file, err := os.Open("cache.json")
    if err != nil {
        return err
    }
    defer file.Close()

    byteValue, _ := ioutil.ReadAll(file)
    return json.Unmarshal(byteValue, &portCache)
}
```

### 6. Web Interface with Bootstrap.js

This involves creating an HTML page with JavaScript that interfaces with your REST API. This includes using AJAX calls to your API and using HTML/CSS for a user-friendly UI.

### 7. HomeKit Integration

For HomeKit integration, you can use a third-party Go library like go-homekit or similar, but keep in mind the complexity and certifications required for full HomeKit compliance.
### 8. Running and Testing

Save the cache before shutdown and load it on startup.
```go
func main() {
    // Load cache at startup
    err := loadCacheFromDisk()
    if err != nil {
        fmt.Println("Failed to load cache:", err)
    }

    r := mux.NewRouter()
    r.HandleFunc("/api/pdu/{pduId}/port/{port}/name", getPortNameHandler).Methods("GET")

    // Other endpoints...

    http.Handle("/", r)
    defer saveCacheToDisk()

    http.ListenAndServe(":8080", nil)
}
```

### Final Steps

Ensure you handle errors properly and secure your API. Further, for any SNMP set operations, handle permissions and authentication correctly. Implement the remaining endpoints and complete the HTTP handlers similarly to getPortNameHandler.

This outline serves as a solid foundation, but streaming data, real-time updates, and HomeKit might require deeper integrations which can be developed iteratively following this structure.