package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"time"
)

func postToHomeAssistant(config *Config, entityID string, value int, unit string, friendlyName string) error {
	url := fmt.Sprintf("%s/api/states/%s", config.HomeAssistant.URL, entityID)
	payload := map[string]interface{}{
		"state": fmt.Sprintf("%d", value),
		"attributes": map[string]interface{}{
			"unit_of_measurement": unit,
			"friendly_name":       friendlyName,
			"device_class":        "measurement",
		},
	}
	jsonData, err := json.Marshal(payload)
	if err != nil {
		return fmt.Errorf("marshal error: %w", err)
	}
	req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonData))
	if err != nil {
		return fmt.Errorf("request error: %w", err)
	}
	req.Header.Set("Authorization", "Bearer "+config.HomeAssistant.Token)
	req.Header.Set("Content-Type", "application/json")
	client := &http.Client{Timeout: 5 * time.Second}
	resp, err := client.Do(req)
	if err != nil {
		return fmt.Errorf("HTTP error: %w", err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != 200 && resp.StatusCode != 201 {
		body, _ := io.ReadAll(resp.Body)
		return fmt.Errorf("HTTP %d: %s", resp.StatusCode, string(body))
	}
	return nil
}

// sendNotification sends a notification via Home Assistant's notify.signal service
func sendNotification(config *Config, title, message string) error {
	url := fmt.Sprintf("%s/api/services/notify/signal", config.HomeAssistant.URL)
	payload := map[string]interface{}{
		"title":   title,
		"message": message,
	}
	jsonData, err := json.Marshal(payload)
	if err != nil {
		return fmt.Errorf("marshal error: %w", err)
	}
	req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonData))
	if err != nil {
		return fmt.Errorf("request error: %w", err)
	}
	req.Header.Set("Authorization", "Bearer "+config.HomeAssistant.Token)
	req.Header.Set("Content-Type", "application/json")
	client := &http.Client{Timeout: 10 * time.Second}
	resp, err := client.Do(req)
	if err != nil {
		return fmt.Errorf("HTTP error: %w", err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != 200 && resp.StatusCode != 201 {
		body, _ := io.ReadAll(resp.Body)
		return fmt.Errorf("HTTP %d: %s", resp.StatusCode, string(body))
	}
	logMessage(LogFile, Info, "  📱 Notification sent: %s", title)
	return nil
}