package main

import (
	"context"
	"database/sql"
	"log"
	"net/http"
	"time"

	_ "github.com/go-sql-driver/mysql"
)

var db *sql.DB

type Student struct {
	ID        int64     `json:"id"`
	Name      string    `json:"name"`
	Age       int       `json:"age"`
	Email     string    `json:"email"`
	CreatedAt time.Time `json:"created_at"`
	UpdatedAt time.Time `json:"updated_at"`
}

func main() {
	mux := http.NewServeMux()
	mux.HandleFunc("/health", healthHandler)
	mux.HandleFunc("/students", studentsHandler)
	mux.HandleFunc("/students/", studentByIDHandler)

	var err error
	db, err = openDB()
	if err != nil {
		log.Fatal(err)
	}

	if err = migrate(context.Background(), db); err != nil {
		log.Fatal("migrate error: "+err.Error())
	}

	addr := ":8080"
	log.Printf("Start server at %s\n", addr)
	if err := http.ListenAndServe(addr, mux); err != nil {
		log.Fatal(err)
	}
}