first commit

internal/handler/api.go

@@ -0,0 +1,137 @@
+package handler
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"portfolio-tracker/internal/model"
+	"portfolio-tracker/internal/util"
+)
+
+func JsonEndpoint(w http.ResponseWriter, r *http.Request) {
+	stock := r.URL.Query().Get("stock")
+
+	// Standardwerte setzen, falls Parameter fehlen
+	if stock == "" {
+		stock = "IDIA.SW"
+	}
+
+	data, err := util.FetchYahooFinanceData(stock)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	w.Header().Set("Content-Type", "application/json")
+	w.Write([]byte(data))
+}
+
+func YahooMaxDividendsHandler(w http.ResponseWriter, r *http.Request) {
+	stock := r.URL.Query().Get("stock")
+	if stock == "" {
+		http.Error(w, "Fehlender stock-Parameter", http.StatusBadRequest)
+		return
+	}
+
+	data, err := util.FetchYahooFinanceDataMax(stock)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	var resp model.YahooDividendChartResponse
+	err = json.Unmarshal([]byte(data), &resp)
+	if err != nil {
+		http.Error(w, "Fehler beim Parsen der Yahoo-Dividenden-Daten: "+err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	var result [][]interface{}
+	if len(resp.Chart.Result) > 0 {
+		for _, div := range resp.Chart.Result[0].Events.Dividends {
+			result = append(result, []interface{}{div.Date * 1000, div.Amount})
+		}
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(result)
+}
+
+func StockSearchEndpoint(w http.ResponseWriter, r *http.Request) {
+	query := r.URL.Query().Get("q")
+	if query == "" {
+		http.Error(w, "Fehlender q-Parameter", http.StatusBadRequest)
+		return
+	}
+
+	data, err := util.StockSearch(query)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.Write([]byte(data))
+}
+
+// Helper function to get stock currency from Yahoo Finance
+func getStockCurrency(stock string) (string, error) {
+	// Fetch basic stock data from Yahoo Finance
+	data, err := util.FetchYahooFinanceData(stock)
+	if err != nil {
+		return "", err
+	}
+
+	// Parse the JSON response
+	var resp model.YahooChartResponse
+	err = json.Unmarshal([]byte(data), &resp)
+	if err != nil {
+		return "", err
+	}
+
+	// Extract currency from the response
+	if len(resp.Chart.Result) > 0 {
+		currency := resp.Chart.Result[0].Meta.Currency
+		if currency != "" {
+			return currency, nil
+		}
+	}
+
+	return "", fmt.Errorf("currency not found in response")
+}
+
+// ClearCurrencyCacheHandler clears the currency conversion cache
+func ClearCurrencyCacheHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Nur POST erlaubt", http.StatusMethodNotAllowed)
+		return
+	}
+
+	util.ClearCache()
+
+	response := map[string]string{
+		"status":  "success",
+		"message": "Currency cache cleared successfully",
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(response)
+}
+
+// CurrencyCacheInfoHandler returns information about the currency cache
+func CurrencyCacheInfoHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		http.Error(w, "Nur GET erlaubt", http.StatusMethodNotAllowed)
+		return
+	}
+
+	cacheInfo := util.GetCacheInfo()
+
+	response := map[string]interface{}{
+		"status":     "success",
+		"cache_size": len(cacheInfo),
+		"entries":    cacheInfo,
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(response)
+}