main.go

package main

import (
	"github.com/backend-simple-buyers-platform/database"
	"github.com/backend-simple-buyers-platform/handlers"
	"fmt"
	"github.com/go-chi/chi"
	"net/http"
	"strconv"
	"time"
)

func main() {
	fmt.Println("Starting the application...")
	fmt.Println("----------------------")
	port := ":3717"
	r := chi.NewRouter()
	// Update response files, using by default actual date.
	currentTime := strconv.FormatInt(time.Now().Unix(), 10)
	fmt.Println("Writing on buyers file...")
	handlers.UpdateBuyers(currentTime)
	fmt.Println("\nWriting on products file...")
	handlers.UpdateProducts(currentTime)
	fmt.Println("\nWriting on transactions file...")
	handlers.UpdateTransactions(currentTime)
	// Upload files to MySQL database
	database.Database()
	// Router
	r.Get("/", func(w http.ResponseWriter, r *http.Request) {
		response := "Welcome to root, please go to /buyers, /products or /transactions"
		_, _ = w.Write([]byte(response))
	})
	r.Get("/buyers", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		w.Header().Set("Access-Control-Allow-Origin", "*")
		response := database.QueryBuyers()
		_, _ = w.Write([]byte(response))
	})
	r.Get("/products", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		w.Header().Set("Access-Control-Allow-Origin", "*")
		response := database.QueryProducts()
		_, _ = w.Write([]byte(response))
	})
	r.Get("/transactions", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		w.Header().Set("Access-Control-Allow-Origin", "*")
		response := database.QueryTransactions()
		_, _ = w.Write([]byte(response))
	})
	// User search
	r.Get("/search/{id}", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		w.Header().Set("Access-Control-Allow-Origin", "*")
		response := database.SearchBuyer(chi.URLParam(r, "id"))
		_, _ = w.Write([]byte(response))
	})
	// No search is done
	r.Get("/search/", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		w.Header().Set("Access-Control-Allow-Origin", "*")
		_, _ = w.Write([]byte("[{\"name\": \"Search someone by ID\", \"age\": 0, \"id\": 0}]"))
	})
	// User transactions
	r.Get("/transaction/data/{id}", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		w.Header().Set("Access-Control-Allow-Origin", "*")
		response := database.TransactionBuyer(chi.URLParam(r, "id"))
		_, _ = w.Write([]byte(response))
	})
	// Products on transaction
	r.Get("/transaction/products/{id}", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		w.Header().Set("Access-Control-Allow-Origin", "*")
		response := database.TransactionProducts(chi.URLParam(r, "id"))
		_, _ = w.Write([]byte(response))
	})
	// Same IP users
	r.Get("/transaction/sameip/{ip}", func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		w.Header().Set("Access-Control-Allow-Origin", "*")
		response := database.SameIPBuyer(chi.URLParam(r, "ip"))
		_, _ = w.Write([]byte(response))
	})
	// Server
	fmt.Println("----------------\nServing on localhost" + port + "...")
	err := http.ListenAndServe(port, r)
	if err != nil {
		fmt.Println("ListenAndServe:", err)
	}
}