path: root/cmd/web/main.go

package main

import (
	"database/sql"
	"flag"
	"html/template"
	"log/slog"
	"net/http"
	"os"

	_ "github.com/go-sql-driver/mysql"
	"github.com/yulqen/ded-go-core/internal/models"
)

type application struct {
	logger                *slog.Logger
	operations            *models.OperationModel
	organisations         *models.OrganisationModel
	engagement_strategies *models.EngagementStrategyModel
	templateCache         map[string]*template.Template
}

func main() {
	addr := flag.String("addr", ":4000", "HTTP network port")
	dsn := flag.String("dsn", "web:dedpassword@/ded?parseTime=true", "MySQL data source name")
	flag.Parse()

	logger := slog.New(slog.NewTextHandler(os.Stdout, nil))

	// Database connection
	db, err := openDB(*dsn)
	if err != nil {
		logger.Error(err.Error())
		os.Exit(1)
	}

	defer db.Close()

	// initialise the new template cache...
	templateCache, err := newTemplateCache()
	if err != nil {
		logger.Error(err.Error())
		os.Exit(1)
	}

	app := &application{
		logger:                logger,
		operations:            &models.OperationModel{DB: db},
		organisations:         &models.OrganisationModel{DB: db},
		engagement_strategies: &models.EngagementStrategyModel{DB: db},
		templateCache:         templateCache,
	}

	// mux := http.NewServeMux()
	// mux.HandleFunc("/", home)
	// log.Print("starting server on :4000")
	logger.Info("starting server", "addr", *addr)
	err = http.ListenAndServe(*addr, app.routes())
	logger.Error(err.Error())
	os.Exit(1)
}

// openDB wraps sql.Open() and returns a sql.DB connection pool
// for a given DSN.
func openDB(dsn string) (*sql.DB, error) {
	db, err := sql.Open("mysql", dsn)
	if err != nil {
		return nil, err
	}

	err = db.Ping()
	if err != nil {
		db.Close()
		return nil, err
	}

	return db, nil

}