package main

import (
	"fmt"
	"log"
	"net/http"

	"git.0x0001f346.de/andreas/Datetime-API/apiTime"
	"git.0x0001f346.de/andreas/api"
	"github.com/gorilla/mux"
)

const apiTitle string = "Datetime-API"
const apiDescription string = "A simple API to get the current time for a given time zone."
const apiVersion string = "0.1"
const portToListenOn int = 9100

func main() {
	API := buildAPI()
	router := mux.NewRouter()

	router.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Language", "en")
		w.Header().Set("Content-Type", "application/json; charset=utf-8")
		fmt.Fprint(w, API.ToJSONString())
	}).Methods("GET")

	for route, path := range API.Paths {
		if path.DELETE != nil {
			if path.DELETE.Function == nil {
				continue
			}
			router.HandleFunc(route, path.DELETE.Function).Methods("DELETE")
		}
		if path.GET != nil {
			if path.GET.Function == nil {
				continue
			}
			router.HandleFunc(route, path.GET.Function).Methods("GET")
		}
		if path.PATCH != nil {
			if path.PATCH.Function == nil {
				continue
			}
			router.HandleFunc(route, path.PATCH.Function).Methods("PATCH")
		}
		if path.POST != nil {
			if path.POST.Function == nil {
				continue
			}
			router.HandleFunc(route, path.POST.Function).Methods("POST")
		}
		if path.PUT != nil {
			if path.PUT.Function == nil {
				continue
			}
			router.HandleFunc(route, path.PUT.Function).Methods("PUT")
		}
	}

	printStartupBanner()

	log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", portToListenOn), router))
}

func buildAPI() api.API {
	fullAPI := api.GetAPIPrototype(apiTitle, apiDescription, apiVersion)

	for route, path := range apiTime.GetPaths() {
		fullAPI.Paths[route] = path
	}

	for name, schema := range apiTime.GetComponents().Schemas {
		fullAPI.Components.Schemas[name] = schema
	}

	return fullAPI
}

func printStartupBanner() {
	fmt.Println("********************************************")
	fmt.Println("*                                          *")
	fmt.Println("*  git.0x0001f346.de/andreas/Datetime-API  *")
	fmt.Println("*                                          *")
	fmt.Println("********************************************")
	fmt.Println("")
	fmt.Printf("Listening: http://localhost:%d\n", portToListenOn)
	fmt.Println("")
}