Add Nina Warnings widget and integrate BBK warning API

apis/nina/main.go

@@ -0,0 +1,89 @@
+package nina
+
+import (
+	"ArinDash/config"
+	"encoding/json"
+	"io"
+	"log"
+	"net/http"
+)
+
+const apiBaseURL = "https://warnung.bund.de/api31"
+
+type configFile struct {
+	Nina ninaConfig
+}
+
+type ninaConfig struct {
+	GebietsCode string
+}
+
+type Warning struct {
+	Id         string   `json:"id"`
+	Identifier string   `json:"identifier"`
+	Sender     string   `json:"sender"`
+	Sent       string   `json:"sent"`
+	Status     string   `json:"status"`
+	MsgType    string   `json:"msgType"`
+	Scope      string   `json:"scope"`
+	Code       []string `json:"code"`
+	Reference  string   `json:"reference"`
+	Info       []Info   `json:"info"`
+}
+
+type Info struct {
+	Language    string   `json:"language"`
+	Category    []string `json:"category"`
+	Event       string   `json:"event"`
+	Urgency     string   `json:"urgency"`
+	Severity    string   `json:"severity"`
+	Expires     string   `json:"expires"`
+	Headline    string   `json:"headline"`
+	Description string   `json:"description"`
+}
+
+func FetchWarnings() []Warning {
+	cfg := &configFile{}
+	config.LoadConfig(cfg)
+	client := &http.Client{}
+
+	req, err := http.NewRequest("GET", apiBaseURL+"/dashboard/"+cfg.Nina.GebietsCode+".json", nil)
+	if err != nil {
+		panic(err)
+	}
+	resp, err := client.Do(req)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer resp.Body.Close()
+	respBody, err := io.ReadAll(resp.Body)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	warnings := make([]Warning, 0)
+	err = json.Unmarshal(respBody, &warnings)
+	if err != nil {
+		log.Fatal(err)
+	}
+	result := make([]Warning, 0)
+	for _, warning := range warnings {
+		req, err := http.NewRequest("GET", apiBaseURL+"/warnings/"+warning.Id+".json", nil)
+		if err != nil {
+			panic(err)
+		}
+		resp, err := client.Do(req)
+		if err != nil {
+			log.Fatal(err)
+		}
+		defer resp.Body.Close()
+		respBody, err := io.ReadAll(resp.Body)
+		if err != nil {
+			log.Fatal(err)
+		}
+		warning := Warning{}
+		err = json.Unmarshal(respBody, &warning)
+		result = append(result, warning)
+	}
+	return result
+}