package handlers

import (
	"html/template"
	"log"
	"marmic/servicetrade-toolbox/internal/api"
	"net/http"
	"strings"
)

func InvoicesHandler(w http.ResponseWriter, r *http.Request) {
	session, ok := r.Context().Value("session").(*api.Session)
	if !ok {
		http.Error(w, "Unauthorized", http.StatusUnauthorized)
		return
	}

	// Handle the search request
	if r.Method == "GET" && r.URL.Query().Get("search") != "" {
		handleInvoiceSearch(w, r, session)
		return
	}

	// Handle the initial page load
	tmpl := template.Must(template.ParseFiles("templates/layout.html", "templates/invoices.html"))
	err := tmpl.Execute(w, nil)
	if err != nil {
		log.Printf("Error executing template: %v", err)
		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
	}
}

func handleInvoiceSearch(w http.ResponseWriter, r *http.Request, session *api.Session) {
	searchTerm := strings.TrimSpace(r.URL.Query().Get("search"))

	if searchTerm == "" {
		log.Println("Empty search term, returning empty response")
		w.WriteHeader(http.StatusOK)
		return
	}

	invoice, err := session.GetInvoice(searchTerm)
	if err != nil {
		log.Printf("Error fetching invoice: %v", err)
		w.WriteHeader(http.StatusInternalServerError)
		tmpl := template.Must(template.ParseFiles("templates/partials/invoice_search_results.html"))
		tmpl.ExecuteTemplate(w, "invoice_search_results", map[string]interface{}{"Error": err.Error()})
		return
	}

	tmpl := template.Must(template.ParseFiles("templates/partials/invoice_search_results.html"))
	err = tmpl.ExecuteTemplate(w, "invoice_search_results", invoice)
	if err != nil {
		log.Printf("Error executing template: %v", err)
		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
	}
}