Overhaul code org, and improve image uploading

This commit introduces breaking changes. It overhauls how and where
services are configured and placed in the codebase, as well as moving
the entire source into src/ It also changes how these integrations
are configured via environment variables. Old configs will still work
for now, but it is strongly suggested that you migrate your config.

src/services/weatherService.go

@@ -0,0 +1,158 @@
+package services
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"log"
+	"net/http"
+	"sync"
+	"time"
+)
+
+type WeatherProvider string
+
+const (
+	OpenWeatherMap WeatherProvider = "openweathermap"
+)
+
+type DepricatedWeatherConfig struct {
+	OpenWeather struct {
+		Provider WeatherProvider `env:"OPENWEATHER_PROVIDER" envDefault:"openweathermap"`
+		APIKey   string          `env:"OPENWEATHER_API_KEY"`
+		Units    string          `env:"OPENWEATHER_TEMP_UNITS" envDefault:"metric"`
+		Lat      float64         `env:"OPENWEATHER_LAT"`
+		Lon      float64         `env:"OPENWEATHER_LON"`
+	}
+	UpdateInterval int `env:"OPENWEATHER_UPDATE_INTERVAL" envDefault:"15"`
+}
+
+type WeatherConfig struct {
+	Provider       WeatherProvider `env:"WEATHER_PROVIDER" envDefault:"openweathermap"`
+	APIKey         string          `env:"WEATHER_API_KEY"`
+	Units          string          `env:"WEATHER_TEMP_UNITS" envDefault:"metric"`
+	Lat            float64         `env:"WEATHER_LAT"`
+	Lon            float64         `env:"WEATHER_LON"`
+	UpdateInterval int             `env:"WEATHER_UPDATE_INTERVAL" envDefault:"15"`
+}
+
+type OpenWeatherResponse struct {
+	Weather []struct {
+		Name   string `json:"main"`
+		IconId string `json:"icon"`
+	} `json:"weather"`
+	Main struct {
+		Temp float64 `json:"temp"`
+	} `json:"main"`
+	Code    int    `json:"cod"`
+	Message string `json:"message"`
+}
+
+type WeatherData struct {
+	Temperature float64
+	WeatherText string
+	Icon        string
+}
+
+type WeatherManager struct {
+	data       *WeatherData
+	lastUpdate time.Time
+	mutex      sync.RWMutex
+	updateChan chan struct{}
+	config     *WeatherConfig
+}
+
+func NewWeatherManager(config *WeatherConfig) *WeatherManager {
+	if config.Provider != OpenWeatherMap {
+		log.Fatalln("Only OpenWeatherMap is supported!")
+		return nil
+	}
+
+	if config.APIKey == "" {
+		log.Fatalln("An API Key required for OpenWeather!")
+		return nil
+	}
+
+	updateInterval := config.UpdateInterval
+	if updateInterval < 1 {
+		updateInterval = 15
+	}
+
+	units := config.Units
+	if units == "" {
+		units = "metric"
+	}
+
+	cache := &WeatherManager{
+		data:       &WeatherData{},
+		updateChan: make(chan struct{}),
+		config:     config,
+	}
+
+	go cache.weatherWorker()
+
+	cache.updateChan <- struct{}{}
+
+	return cache
+}
+
+func (c *WeatherManager) GetWeather() WeatherData {
+	c.mutex.RLock()
+	defer c.mutex.RUnlock()
+	return *c.data
+}
+
+func (c *WeatherManager) weatherWorker() {
+	ticker := time.NewTicker(time.Duration(c.config.UpdateInterval) * time.Minute)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-c.updateChan:
+			c.updateWeather()
+		case <-ticker.C:
+			c.updateWeather()
+		}
+	}
+}
+
+func (c *WeatherManager) updateWeather() {
+	url := fmt.Sprintf("https://api.openweathermap.org/data/2.5/weather?lat=%f&lon=%f&appid=%s&units=%s",
+		c.config.Lat, c.config.Lon, c.config.APIKey, c.config.Units)
+
+	resp, err := http.Get(url)
+	if err != nil {
+		fmt.Printf("Error fetching weather: %v\n", err)
+		return
+	}
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		fmt.Printf("Error reading response: %v\n", err)
+		return
+	}
+
+	var weatherResp OpenWeatherResponse
+	if err := json.Unmarshal(body, &weatherResp); err != nil {
+		fmt.Printf("Error parsing weather data: %v\n", err)
+		return
+	}
+
+	// if the request failed
+	if weatherResp.Code != 200 {
+		// if there is no pre-existing data in the cache
+		if c.data.WeatherText == "" {
+			log.Fatalf("Fetching the weather data failed!\n%s\n", weatherResp.Message)
+		} else {
+			return
+		}
+	}
+
+	c.mutex.Lock()
+	c.data.Temperature = weatherResp.Main.Temp
+	c.data.WeatherText = weatherResp.Weather[0].Name
+	c.data.Icon = weatherResp.Weather[0].IconId
+	c.lastUpdate = time.Now()
+	c.mutex.Unlock()
+}